Commit Graph

263 Commits

Author SHA1 Message Date
Paul Burton
6e62a88802 MIPS: generic: Support MIPS Boston development boards
Add support for the MIPS Boston development board to generic kernels,
which essentially amounts to:

  - Adding the device tree source for the MIPS Boston board.

  - Adding a Kconfig fragment which enables the appropriate drivers for
    the MIPS Boston board.

With these changes in place generic kernels will support the board by
default, and kernels with only the drivers needed for Boston enabled can
be configured by setting BOARDS=boston during configuration. For
example:

  $ make ARCH=mips 64r6el_defconfig BOARDS=boston

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Reviewed-by: James Hogan <james.hogan@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/16485/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-07-11 14:13:06 +02:00
Paul Burton
4d2804b7d7 MIPS: DTS: img: Don't attempt to build-in all .dtb files
When building a FIT image we may want the kernel to build multiple .dtb
files, but we don't want to build them all into the kernel binary as
object files since they'll instead be included in the FIT image.

Commit daa10170da ("MIPS: DTS: img: add device tree for Marduk board")
however created arch/mips/boot/dts/img/Makefile with a line that builds
any enabled .dtb files into the kernel. Remove this & build the
pistachio object specifically, in preparation for adding .dtb targets
which we don't want to build into the kernel.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Rahul Bedarkar <rahulbedarkar89@gmail.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/16484/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-07-11 14:13:06 +02:00
Linus Walleij
6183061967 Linux 4.12-rc7
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Merge tag 'v4.12-rc7' into devel

Linux 4.12-rc7
2017-06-29 14:27:39 +02:00
Paul Burton
d3f616346d MIPS: SEAD-3: Fix GIC interrupt specifiers
The various interrupt specifiers in the device tree are not in a valid
format for the MIPS GIC interrupt controller binding. Where each
interrupt should provide 3 values - GIC_LOCAL or GIC_SHARED, the
pin number & the type of interrupt - the device tree was only providing
the pin number. This causes interrupts for those devices to not be used
when a GIC is present. SEAD-3 systems without a GIC are unaffected since
the DT fixup code generates interrupt specifiers that are valid for the
CPU interrupt controller.

Fix this by adding the GIC_SHARED & IRQ_TYPE_LEVEL_HIGH values to each
interrupt specifier.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Fixes: c11e3b48db ("MIPS: SEAD3: Probe UARTs using DT")
Fixes: a34e93882d ("MIPS: SEAD3: Probe ethernet controller using DT")
Fixes: 7afd2a5aec ("MIPS: SEAD3: Probe EHCI controller using DT")
Cc: linux-mips@linux-mips.org
Cc: stable@vger.kernel.org  # v4.9+
Patchwork: https://patchwork.linux-mips.org/patch/16189/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-06-28 12:22:42 +02:00
Paul Burton
fbdc674ba3 MIPS: SEAD-3: Set interrupt-parent per-device, not at root node
The SEAD-3 board may be configured with or without a MIPS Global
Interrupt Controller (GIC). Because of this we have a device tree with a
default case of a GIC present, and code to fixup the device tree based
upon a configuration register that indicates the presence of the GIC.

In order to keep this DT fixup code simple, the interrupt-parent
property was specified at the root node of the SEAD-3 DT, allowing the
fixup code to simply change this property to the phandle of the CPU
interrupt controller if a GIC is not present & affect all
interrupt-using devices at once. This however causes a problem if we do
have a GIC & the device tree is used as-is, because the interrupt-parent
property of the root node applies to the CPU interrupt controller node.
This causes a cycle when of_irq_init() attempts to probe interrupt
controllers in order and boots fail due to a lack of configured
interrupts, with this message printed on the kernel console:

[    0.000000] OF: of_irq_init: children remain, but no parents

Fix this by removing the interrupt-parent property from the DT root node
& instead setting it for each device which uses interrupts, ensuring
that the CPU interrupt controller node has no interrupt-parent &
allowing of_irq_init() to identify it as the root interrupt controller.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Reported-by: Keng Koh <keng.koh@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/16187/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-06-28 12:22:41 +02:00
Paul Burton
c3d62fc6a0 MIPS: generic/yamon-dt: Use serial* rather than uart* aliases
Name aliases in the SEAD-3 device tree serial0 & serial1, rather than
uart0 & uart1. This allows the core serial code to make use of the
aliases to ensure that the UARTs are consistently numbered as expected
rather than having the numbering depend upon probe order.

When translating YAMON-provided serial configuration to a device tree
stdout-path property adjust accordingly, such that we continue to
reference a valid alias.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/16183/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-06-28 12:22:41 +02:00
Paul Burton
efe4a1acdc MIPS: SEAD-3: Remove GIC timer from DT
The SEAD-3 board doesn't & never has configured the GIC frequency.
Remove the timer node from the DT in order to avoid attempting to probe
the GIC clocksource/clockevent driver which will produce error messages
such as these during boot:

[    0.000000] GIC frequency not specified.
[    0.000000] Failed to initialize '/interrupt-controller@1b1c0000/timer': -22
[    0.000000] clocksource_probe: no matching clocksources found

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/16188/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-06-28 12:22:40 +02:00
Paul Burton
bcd7c45e0d MIPS: .its targets depend on vmlinux
The .its targets require information about the kernel binary, such as
its entry point, which is extracted from the vmlinux ELF. We therefore
require that the ELF is built before the .its files are generated.
Declare this requirement in the Makefile such that make will ensure this
is always the case, otherwise in corner cases we can hit issues as the
.its is generated with an incorrect (either invalid or stale) entry
point.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Fixes: cf2a5e0bb4 ("MIPS: Support generating Flattened Image Trees (.itb)")
Cc: linux-mips@linux-mips.org
Cc: stable <stable@vger.kernel.org> # v4.9+
Patchwork: https://patchwork.linux-mips.org/patch/16179/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-06-15 11:48:15 +02:00
Paul Cercueil
89a6139cd8 MIPS: JZ4780: CI20: Add pinctrl configuration for several drivers
We set the pin configuration for the jz4780-nand and jz4780-uart
drivers.

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-05-22 17:25:35 +02:00
Paul Cercueil
636f8ba67f MIPS: JZ4740: Qi LB60: Add pinctrl configuration for several drivers
We set the pin configuration for the jz4740-nand, jz4740-mmc,
jz4740-fb, jz4740-pwm and jz4740-uart drivers.

This will permit those drivers to be cleaned out of the custom GPIO code
that they currently use.

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-05-22 17:25:11 +02:00
Paul Cercueil
d32613c337 MIPS: jz4780: DTS: Add nodes for ingenic pinctrl and gpio drivers
For a description of the devicetree node, please read
Documentation/devicetree/bindings/pinctrl/ingenic,pinctrl.txt

For a description of the gpio devicetree nodes, please read
Documentation/devicetree/bindings/gpio/ingenic,gpio.txt

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-05-22 17:24:42 +02:00
Paul Cercueil
3951cbb548 MIPS: jz4740: DTS: Add nodes for ingenic pinctrl and gpio drivers
For a description of the pinctrl devicetree node, please read
Documentation/devicetree/bindings/pinctrl/ingenic,pinctrl.txt

For a description of the gpio devicetree nodes, please read
Documentation/devicetree/bindings/gpio/ingenic,gpio.txt

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-05-22 17:24:16 +02:00
Olof Johansson
d5d332d3f7 devicetree: Move include prefixes from arch to separate directory
We use a directory under arch/$ARCH/boot/dts as an include path
that has links outside of the subtree to find dt-bindings from under
include/dt-bindings. That's been working well, but new DT architectures
haven't been adding them by default.

Recently there's been a desire to share some of the DT material between
arm and arm64, which originally caused developers to create symlinks or
relative includes between the subtrees. This isn't ideal -- it breaks
if the DT files aren't stored in the exact same hierarchy as the kernel
tree, and generally it's just icky.

As a somewhat cleaner solution we decided to add a $ARCH/ prefix link
once, and allow DTS files to reference dtsi (and dts) files in other
architectures that way.

Original approach was to create these links under each architecture,
but it lead to the problem of recursive symlinks.

As a remedy, move the include link directories out of the architecture
trees into a common location. At the same time, they can now share one
directory and one dt-bindings/ link as well.

Fixes: 4027494ae6 ('ARM: dts: add arm/arm64 include symlinks')
Reported-by: Russell King <linux@armlinux.org.uk>
Reported-by: Omar Sandoval <osandov@osandov.com>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Tested-by: Heiko Stuebner <heiko@sntech.de>
Acked-by: Rob Herring <robh@kernel.org>
Cc: Heiko Stuebner <heiko@sntech.de>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Mikael Starvik <starvik@axis.com>
Cc: Jesper Nilsson <jesper.nilsson@axis.com>
Cc: James Hogan <james.hogan@imgtec.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Frank Rowand <frowand.list@gmail.com>
Cc: linux-arch <linux-arch@vger.kernel.org>
Signed-off-by: Olof Johansson <olof@lixom.net>
2017-05-18 23:55:48 -07:00
Ian Pozella
650a2b29cd MIPS: DTS: Add img directory to Makefile
An img directory exists for the Pistchio SoC device tree but the
directory itself isn't in the dts Makefile meaning the dtbs never get
built.

Fixes: daa10170da ("MIPS: DTS: img: add device tree for Marduk board")
Signed-off-by: Ian Pozella <Ian.Pozella@imgtec.com>
Reviewed-by: Rahul Bedarkar <Rahul.Bedarkar@imgtec.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/15309/
Signed-off-by: James Hogan <james.hogan@imgtec.com>
2017-02-17 11:16:46 +00:00
Jaedon Shin
d783738c00 MIPS: BMIPS: Add support SPI device nodes
Adds SPI device nodes to BCM7xxx MIPS based SoCs.

Signed-off-by: Jaedon Shin <jaedon.shin@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Cc: Kevin Cernekee <cernekee@gmail.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: linux-mips@linux-mips.org
Cc: devicetree@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/14990/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-01-24 18:30:34 +01:00
Ralf Baechle
209ec69ab3 MIPS: zboot: Consolidate compiler flag filtering.
Al Viro noticed that we were using two different methods to filter out
flags from KBUILD_CFLAGS.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Reported-by: Al Viro <viro@zeniv.linux.org.uk>
2017-01-03 16:48:40 +01:00
Rahul Bedarkar
daa10170da MIPS: DTS: img: add device tree for Marduk board
Add support for Imagination Technologies' Marduk board which is based
on Pistachio SoC. It is also known as Creator Ci40. Marduk is legacy
name and will be there for decades.

Documentation for this board can be found on
https://docs.creatordev.io/ci40/

This patch adds initial support for board with following peripherals:

* PWM based heartbeat LED
* GPIO based buttons
* SPI NOR flash on SPI1
* UART0 and UART1
* SD card
* Ethernet
* USB
* PWM
* ADC
* I2C

Signed-off-by: Rahul Bedarkar <rahul.bedarkar@imgtec.com>
Acked-by: Rob Herring <robh@kernel.org>
Acked-by: James Hartley <james.hartley@imgtec.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: linux-mips@linux-mips.org
Cc: devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/14394/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-01-03 16:34:41 +01:00
Rahul Bedarkar
d774a5896e MIPS: DTS: Add base device tree for Pistachio SoC
Add support for the base Device Tree for Imagination Technologies'
Pistachio SoC.

This commit supports the following peripherals:

 * Clocks
 * Pinctrl and GPIO
 * UART
 * SPI
 * I2C
 * PWM
 * ADC
 * Watchdog
 * Ethernet
 * MMC
 * DMA engine
 * Crypto
 * I2S
 * SPDIF
 * Internal DAC
 * Timer
 * USB
 * IR
 * Interrupt Controller

Signed-off-by: Rahul Bedarkar <rahul.bedarkar@imgtec.com>
Acked-by: James Hartley <james.hartley@imgtec.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: linux-mips@linux-mips.org
Cc: devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/14393/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-01-03 16:34:41 +01:00
Zubair Lutfullah Kakakhel
beb6e9b368 MIPS: xilfpga: Add DT node for AXI emaclite
The xilfpga platform has a Xilinx AXI emaclite block.

Add the DT node to use it.

Signed-off-by: Zubair Lutfullah Kakakhel <Zubair.Kakakhel@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/14596/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-01-03 16:34:40 +01:00
Zubair Lutfullah Kakakhel
da621d5022 MIPS: xilfpga: Add DT node for AXI I2C
The xilfpga platform has an AXI I2C Bus master with a temperature
sensor connected to it.

Add the device tree node to use them.

Signed-off-by: Zubair Lutfullah Kakakhel <Zubair.Kakakhel@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/14594/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-01-03 16:34:39 +01:00
Zubair Lutfullah Kakakhel
1e73f96747 MIPS: xilfpga: Update DT node and specify uart irq
Update the DT node with the UART irq

Signed-off-by: Zubair Lutfullah Kakakhel <Zubair.Kakakhel@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/14593/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-01-03 16:34:39 +01:00
Zubair Lutfullah Kakakhel
79a9329533 MIPS: xilfpga: Use Xilinx Interrupt Controller
IRQs from peripherals such as i2c/uart/ethernet come via
the AXI Interrupt controller.

Select it in Kconfig for xilfpga and add the DT node

Signed-off-by: Zubair Lutfullah Kakakhel <Zubair.Kakakhel@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/14592/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-01-03 16:34:39 +01:00
Paul Bolle
e4c64e6f3d MIPS: Zboot: Don't use $(LINUXINCLUDE) twice
The make variables KBUILD_CFLAGS and KBUILD_AFLAGS both contain
$(LINUXINCLUDE). But the build already picks up $(LINUXINCLUDE) from
scripts/Makefile.lib. The net effect is that the (long) list of include
directories is used twice.

This is harmless but pointless. So stop using $(LINUXINCLUDE) twice.

Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/14622/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-01-03 16:34:32 +01:00
Maarten ter Huurne
ccebb88aea MIPS: zboot: Add "uzImage.bin" target
uzImage.bin is vmlinuz.bin wrapped in a legacy U-Boot image. Since
the extraction code is inside the image, it does not depend on the
boot loader to extract the kernel.

Signed-off-by: Maarten ter Huurne <maarten@treewalker.org>
Cc: Alban Bedel <albeu@free.fr>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/14473/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-01-03 16:34:31 +01:00
Linus Torvalds
b0b3a37b90 RTC for 4.10
Subsystem:
  - non-modular drivers are now explicitly non-modular
 
 New driver:
  - Epson Toyocom rtc-7301sf/dg
 
 Drivers:
  - cmos: reject unsupported alarm values wrt the RTC capabilities
  - ds1307: ACPI support
  - jz4740: DT support, jz4780 handling, can now be used as a system power
  controller
  - mcp795: many fixes, in particular proper month handling
  - twl: driver is now DT only
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Merge tag 'rtc-4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux

Pull RTC updates from Alexandre Belloni:
  "Subsystem:
   - non-modular drivers are now explicitly non-modular

  New driver:
    - Epson Toyocom rtc-7301sf/dg

  Drivers:
   - cmos: reject unsupported alarm values wrt the RTC capabilities
   - ds1307: ACPI support
   - jz4740: DT support, jz4780 handling, can now be used as a system
     power controller
   - mcp795: many fixes, in particular proper month handling
   - twl: driver is now DT only"

* tag 'rtc-4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux: (31 commits)
  rtc: mcp795: Fix whitespace and indentation.
  rtc: mcp795: Prefer using the BIT() macro.
  rtc: mcp795: fix month write resetting date to 1.
  rtc: mcp795: fix time range difference between linux and RTC chip.
  rtc: mcp795: fix bitmask value for leap year (LP).
  rtc: mcp795: use bcd2bin/bin2bcd.
  rtc: add support for EPSON TOYOCOM RTC-7301SF/DG
  rtc: ds1307: Add ACPI support
  rtc: imxdi: (trivial) fix a typo
  rtc: ds1374: Merge conditional + WARN_ON()
  rtc: twl: make driver DT only
  rtc: twl: kill static variables
  rtc: fix typos in Kconfig
  rtc: jz4740: make the driver builtin only
  rtc: jz4740: remove unused EXPORT_SYMBOL
  Documentation: bindings: fix twl-rtc documentation
  rtc: Enable compile testing for Maxim and Samsung drivers
  MIPS: jz4740: Remove obsolete code
  MIPS: qi_lb60: Probe RTC driver from DT and use it as power controller
  MIPS: jz4740: DTS: Probe the jz4740-rtc driver from devicetree
  ...
2016-12-18 18:18:03 -08:00
Paul Cercueil
6ab5901837 MIPS: qi_lb60: Probe RTC driver from DT and use it as power controller
Since we already have a devicetree node for the jz4740-rtc driver, we
don't have to probe it from platform code.

Besides, using the jz4740-rtc driver as the power controller for the
qi_lb60 platform allows us to remove the jz4740 platform power-off code,
since this is the only jz4740-based board upstream.

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Acked-by: Maarten ter Huurne <maarten@treewalker.org>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2016-11-05 00:02:01 +01:00
Paul Cercueil
262d62cb00 MIPS: jz4740: DTS: Probe the jz4740-rtc driver from devicetree
Now that the jz4740-rtc driver supports devicetree, we can add a
devicetree node for it.

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Acked-by: Maarten ter Huurne <maarten@treewalker.org>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2016-11-05 00:01:59 +01:00
Paul Burton
93032e31a5 MIPS: Malta: Fixup reboot
Commit 10b6ea0959 ("MIPS: Malta: Use syscon-reboot driver to reboot")
converted the Malta board to use the generic syscon-reboot driver to
handle reboots, but incorrectly used the value 0x4d rather than 0x42 as
the magic to write to the reboot register.

I also incorrectly believed that syscon/regmap would default to native
endianness, but this isn't the case. Force this by specifying with a
native-endian property in the devicetree.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Fixes: 10b6ea0959 ("MIPS: Malta: Use syscon-reboot driver to reboot")
Reported-by: Guenter Roeck <linux@roeck-us.net>
Cc: linux-mips@linux-mips.org
Tested-by: Guenter Roeck <linux@roeck-us.net>
Tested-by: Maciej W. Rozycki <macro@imgtec.com>
Patchwork: https://patchwork.linux-mips.org/patch/14396/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-11-04 00:27:27 +01:00
Paul Burton
3f5f0a4475 MIPS: generic: Convert SEAD-3 to a generic board
Convert the MIPS SEAD-3 board support to be a generic board, supported
by generic kernels.

Because the SEAD-3 boot protocol was defined long ago and we don't want
to force a switch to the UHI protocol, SEAD-3 is added as a legacy board
which is detected by reading the REVISION register. This may technically
not be a valid memory read & future work will include attempting to
handle that gracefully. In practice since SEAD-3 is the only legacy
board supported by the generic kernel so far the read will only happen
on SEAD-3 boards, and even once Malta is converted the same REVISION
register exists there too. Other boards such as Boston, Ci20 & Ci40 will
use the UHI boot protocol & thus not run any of the legacy board detect
functions.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/14354/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-10-06 18:04:20 +02:00
Paul Burton
eed0eabd12 MIPS: generic: Introduce generic DT-based board support
Introduce a "generic" platform, which aims to be board-agnostic by
making use of device trees passed by the boot protocol defined in the
MIPS UHI (Universal Hosting Interface) specification. Provision is made
for supporting boards which use a legacy boot protocol that can't be
changed, but adding support for such boards or any others is left to
followon patches.

Right now the built kernels expect to be loaded to 0x80100000, ie. in
kseg0. This is fine for the vast majority of MIPS platforms, but
nevertheless it would be good to remove this limitation in the future by
mapping the kernel via the TLB such that it can be loaded anywhere & map
itself appropriately.

Configuration is handled by dynamically generating configs using
scripts/kconfig/merge_config.sh, somewhat similar to the way powerpc
makes use of it. This allows for variations upon the configuration, eg.
differing architecture revisions or subsets of driver support for
differing boards, to be handled without having a large number of
defconfig files.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/14353/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-10-06 18:04:04 +02:00
Paul Burton
cf2a5e0bb4 MIPS: Support generating Flattened Image Trees (.itb)
Add support for generating kernel images in the Flattened Image Tree
(.itb) format as supported by U-Boot. This format is essentially a
Flattened Device Tree binary containing images (kernels, DTBs, ramdisks)
and configurations which link those images together. The big advantages
of FIT images over the uImage format are:

  - We can include FDTs in the kernel image in a way that the bootloader
    can extract it & manipulate it before providing it to the kernel.
    Thus we can ship FDTs as part of the kernel giving us the advantages
    of being able to develop & maintain the DT within the kernel tree,
    but also have the benefits of the bootloader being able to
    manipulate the FDT. Example uses for this would be to inject the
    kernel command line into the chosen node, or to fill in the correct
    memory size.

  - We can include multiple configurations in a single kernel image.
    This means that a single FIT image can, given appropriate
    bootloaders, be booted on different boards with the bootloader
    selecting an appropriate configuration & providing the correct FDT
    to the kernel.

  - We can support a multitude of hashes over the data.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/14352/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-10-06 18:03:10 +02:00
Jaedon Shin
a2c510a2d0 MIPS: BMIPS: Use interrupt-controller node name
Changes node names of the interrupt-controller device nodes to
interrupt-controller instead of label strings.

Signed-off-by: Jaedon Shin <jaedon.shin@gmail.com>
Cc: Florian Fainelli <f.fainelli@gmail.com>
Cc: Jonas Gorski <jonas.gorski@gmail.com>
Cc: Kevin Cernekee <cernekee@gmail.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: MIPS Mailing List <linux-mips@linux-mips.org>
Cc: devicetree@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/14004/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-10-06 17:31:02 +02:00
Jaedon Shin
cfc8be04c3 MIPS: BMIPS: Add support NAND device nodes
Adds NAND device nodes to BCM7xxx MIPS based SoCs.

Signed-off-by: Jaedon Shin <jaedon.shin@gmail.com>
Cc: Florian Fainelli <f.fainelli@gmail.com>
Cc: Jonas Gorski <jonas.gorski@gmail.com>
Cc: Kevin Cernekee <cernekee@gmail.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: MIPS Mailing List <linux-mips@linux-mips.org>
Cc: devicetree@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/14003/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-10-06 17:31:02 +02:00
Jaedon Shin
b2420e2762 MIPS: BMIPS: Add support SDHCI device nodes
Adds SDHCI device nodes to BCM7xxx MIPS based SoCs.

Signed-off-by: Jaedon Shin <jaedon.shin@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Cc: Jonas Gorski <jonas.gorski@gmail.com>
Cc: Kevin Cernekee <cernekee@gmail.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: MIPS Mailing List <linux-mips@linux-mips.org>
Cc: devicetree@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/14002/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-10-06 17:31:02 +02:00
Jaedon Shin
c707844d4b MIPS: BMIPS: Add support GPIO device nodes
Adds GPIO device nodes to BCM7xxx MIPS based SoCs.

Signed-off-by: Jaedon Shin <jaedon.shin@gmail.com>
Cc: Florian Fainelli <f.fainelli@gmail.com>
Cc: Jonas Gorski <jonas.gorski@gmail.com>
Cc: Kevin Cernekee <cernekee@gmail.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: MIPS Mailing List <linux-mips@linux-mips.org>
Cc: devicetree@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/14001/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-10-06 17:31:02 +02:00
Jaedon Shin
7bbe59ddbb MIPS: BMIPS: Add support PWM device nodes
Adds PWM device nodes to BCM7xxx MIPS based SoCs.

Signed-off-by: Jaedon Shin <jaedon.shin@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Cc: Jonas Gorski <jonas.gorski@gmail.com>
Cc: Kevin Cernekee <cernekee@gmail.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: MIPS Mailing List <linux-mips@linux-mips.org>
Cc: devicetree@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/14000/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-10-06 17:31:01 +02:00
Paul Burton
10b6ea0959 MIPS: Malta: Use syscon-reboot driver to reboot
Make use of the generic syscon-reboot driver to reboot the Malta board,
reducing the amount of platform code it requires.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Stephan Linz <linz@li-pro.net>
Cc: Jacek Anaszewski <j.anaszewski@samsung.com>
Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: linux-mips@linux-mips.org
Cc: devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/14279/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-10-06 17:31:01 +02:00
Paul Burton
97af8e1cb3 MIPS: Malta: Probe pflash via DT
Add the DT nodes required to probe the CFI compatible parallel monitor
flash found on the Malta development board, and remove the platform
code that was previously doing it. Delete the now-empty malta-platform.c
file. Adjust the Malta defconfigs that enable MTD & the pflash/CFI
driver to enable CONFIG_MTD_PHYSMAP_OF rather than CONFIG_MTD_PHYSMAP in
order to preserve their behaviour.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: linux-mips@linux-mips.org
Cc: devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/14278/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-10-06 17:31:01 +02:00
Paul Burton
0a46ffa360 MIPS: Malta: Probe RTC via DT
Add the DT node required to probe the RTC, and remove the platform code
that was previously doing it.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: linux-mips@linux-mips.org
Cc: devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/14277/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-10-06 17:31:01 +02:00
Paul Burton
38ec82fe21 MIPS: Malta: Probe interrupt controllers via DT
Probe the CPU, GIC & i8259 interrupt controllers present in the Malta
system using device tree. This enables interrupts to be provided to
devices using device tree as they are moved over to being probed using
it.

Since Malta is very configurable it's unknown whether a GIC will be
present at compile time. In order to support both cases the
malta_dt_shim code is added in order to detect whether a GIC is present,
adjusting the DT to route interrupts correctly and nop out the GIC node
if no GIC is found.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Cc: devicetree@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/14274/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-10-06 17:31:00 +02:00
Paul Burton
5e189564d5 MIPS: SEAD3: Use img-ascii-lcd driver
Probe the img-ascii-lcd driver using device tree in order to display a
message on the SEAD3 board's LCD display, and remove the platform code
that was formerly performing this function. This removes more platform
code and moves SEAD3 further towards being entirely DT-based.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Jacek Anaszewski <j.anaszewski@samsung.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: linux-mips@linux-mips.org
Cc: devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/14063/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-10-06 17:04:34 +02:00
Paul Burton
a1ec6003f2 MIPS: SEAD3: Use generic restart-poweroff driver
Remove the custom platform code to restart when instructed to power off,
instead relying upon the generic restart-poweroff driver probed via DT
to do the same thing.

Remove also the halt implementation, which is incorrect. The generic
MIPS version will hang the system as halt should.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Jacek Anaszewski <j.anaszewski@samsung.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: linux-mips@linux-mips.org
Cc: devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/14057/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-10-05 01:31:20 +02:00
Paul Burton
70bfdcec9a MIPS: SEAD3: Reset via generic syscon-reboot driver & DT
Remove the SEAD3 implementation of _machine_restart & instead make use
of the generic syscon-reboot driver probed via device tree.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: linux-mips@linux-mips.org
Cc: devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/14056/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-10-05 01:31:20 +02:00
Paul Burton
c764583f40 MIPS: SEAD3: Use register-bit-led driver via DT for LEDs
Probe a driver for the PLED & FLED LEDs found on the SEAD3 board using
the register-bit-led driver via device tree, rather than a custom driver
via platform code. Enable support for the register-bit-led driver & its
prerequisite syscon in sead3_defconfig.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Jacek Anaszewski <j.anaszewski@samsung.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: linux-mips@linux-mips.org
Cc: devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/14054/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-10-05 01:31:20 +02:00
Paul Burton
3aefc6554a MIPS: SEAD3: Probe parallel flash via DT
Probe the system parallel flash using device tree rather than platform
code, in order to reduce the amount of the latter.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: linux-mips@linux-mips.org
Cc: devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/14053/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-10-05 01:31:20 +02:00
Paul Burton
7afd2a5aec MIPS: SEAD3: Probe EHCI controller using DT
Probe the SEAD3 EHCI controller using the generic-ehci driver & device
tree rather than platform code, in order to reduce the amount of the
latter.

Now that no devices probed from platform code require interrupts, remove
the retrieval of the IRQ domain & sead3int.h.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: linux-mips@linux-mips.org
Cc: devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/14051/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-10-05 01:31:20 +02:00
Paul Burton
a34e93882d MIPS: SEAD3: Probe ethernet controller using DT
Probe the smsc911x ethernet controller using device tree rather than
platform code, reducing the amount of the latter.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: linux-mips@linux-mips.org
Cc: devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/14050/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-10-05 01:31:20 +02:00
Paul Burton
c11e3b48db MIPS: SEAD3: Probe UARTs using DT
Probe the UARTs on SEAD3 boards using device tree rather than platform
code, in order to reduce the amount of the latter. This requires that
CONFIG_SERIAL_OF_PLATFORM be enabled, so enable it in sead3_defconfig.
The SEAD3 DT shim code is extended to read bootloader environment
variables to determine the appropriate UART & mode for kernel console
output & set the stdout-path property of the chosen node accordingly.

In contrast to the old platform code, which appears to have only ever
set "console=ttyS0,38400n8r" with the code in console_config never
having an effect, this will honor the "yamontty" environment variable to
select between the 2 UARTs on the board and then check the "modetty0" or
"modetty1" variable as appropriate to determine the UART configuration.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: linux-mips@linux-mips.org
Cc: devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/14048/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-10-05 01:31:20 +02:00
Paul Burton
b6d5e47e67 MIPS: SEAD3: Probe interrupt controllers using DT
Probe the CPU interrupt controller & optional Global Interrupt
Controller (GIC) using devicetree rather than platform code. Because the
bootloader on SEAD3 does not provide a device tree to the kernel & the
device tree is always built in, we patch out the GIC node during boot if
we detect that a GIC is not present in the system.

The appropriate IRQ domain is discovered by platform code setting up
device IRQ numbers temporarily. It will be removed by further patches
which move the devices towards being probed via device tree.

No behavioural change is intended by this patch.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Matt Redfearn <matt.redfearn@imgtec.com>
Cc: Kefeng Wang <wangkefeng.wang@huawei.com>
Cc: Jacek Anaszewski <j.anaszewski@samsung.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: linux-mips@linux-mips.org
Cc: devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/14047/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-10-05 01:31:20 +02:00
Aaro Koskinen
6fcdc71735 MIPS: Octeon: Add DTS for D-Link DSR-500N.
Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Cc: devicetree@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/14249/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-10-04 16:13:57 +02:00
Aaro Koskinen
1491eaf970 MIPS: Octeon: Split dlink_dsr-1000n.dts to allow reuse with D-Link DSR-500N.
Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Cc: devicetree@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/14248/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-10-04 16:13:57 +02:00
Álvaro Fernández Rojas
ef0c592ad0 MIPS: BMIPS: Add device tree example for BCM6362
This adds a device tree example for SFR NeufBox 6.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Cc: f.fainelli@gmail.com
Cc: jogo@openwrt.org
Cc: cernekee@gmail.com
Cc: robh@kernel.org
Cc: simon@fire.lp0.eu
Cc: john@phrozen.org
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Cc: devicetree@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/13844/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-10-04 16:13:57 +02:00
Álvaro Fernández Rojas
484d83b3d6 MIPS: BMIPS: Add device tree example for BCM3368
This adds a device tree example for Netgear CVG834G.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Cc: f.fainelli@gmail.com
Cc: jogo@openwrt.org
Cc: cernekee@gmail.com
Cc: robh@kernel.org
Cc: simon@fire.lp0.eu
Cc: john@phrozen.org
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Cc: devicetree@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/13843/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-10-04 16:13:57 +02:00
Álvaro Fernández Rojas
786e19a888 MIPS: BMIPS: Add device tree example for BCM63268
This adds a device tree example for Comtrend VR-3032u, which
also serves as a real example for brcm,bcm6328-leds.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Cc: f.fainelli@gmail.com
Cc: jogo@openwrt.org
Cc: cernekee@gmail.com
Cc: robh@kernel.org
Cc: simon@fire.lp0.eu
Cc: john@phrozen.org
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Cc: devicetree@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/13842/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-10-04 16:13:57 +02:00
Álvaro Fernández Rojas
695835511f MIPS: BMIPS: rename bcm96358nb4ser to bcm6358-neufbox4-sercom
The prefix bcm9* should only be used for reference and evaluation boards from
Broadcom.
Also adds missing console output to bootargs.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Cc: f.fainelli@gmail.com
Cc: jogo@openwrt.org
Cc: cernekee@gmail.com
Cc: robh@kernel.org
Cc: simon@fire.lp0.eu
Cc: john@phrozen.org
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Cc: devicetree@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/13841/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-10-04 16:13:57 +02:00
Álvaro Fernández Rojas
5035dd83cc MIPS: BMIPS: add missing bcm97435svmb to DT_NONE
Commit 380e4270 added support for bcm97435svmb.dtb but missed adding it to
DT_NONE.
Also refactor DT_NONE dtbs in order to add larger names in the future.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Cc: f.fainelli@gmail.com
Cc: jogo@openwrt.org
Cc: cernekee@gmail.com
Cc: robh@kernel.org
Cc: simon@fire.lp0.eu
Cc: john@phrozen.org
Cc: linux-kernel@vger.kernel.org
Cc: devicetree@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/13839/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-10-04 16:13:57 +02:00
Harvey Hunt
828a54287c MIPS: tools: Fix relocs tool compiler warnings
When using clang as HOSTCC, the following warnings appear:

In file included from arch/mips/boot/tools/relocs_64.c:27:0:
arch/mips/boot/tools/relocs.c: In function ‘read_relocs’:
arch/mips/boot/tools/relocs.c:397:4: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
    ELF_R_SYM(rel->r_info) = elf32_to_cpu(ELF_R_SYM(rel->r_info));
    ^~~~~~~~~
arch/mips/boot/tools/relocs.c:397:4: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
arch/mips/boot/tools/relocs.c: In function ‘walk_relocs’:
arch/mips/boot/tools/relocs.c:491:4: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
    Elf_Sym *sym = &sh_symtab[ELF_R_SYM(rel->r_info)];
    ^~~~~~~
arch/mips/boot/tools/relocs.c: In function ‘do_reloc’:
arch/mips/boot/tools/relocs.c:502:2: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
  unsigned r_type = ELF_R_TYPE(rel->r_info);
  ^~~~~~~~
arch/mips/boot/tools/relocs.c: In function ‘do_reloc_info’:
arch/mips/boot/tools/relocs.c:641:3: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
   rel_type(ELF_R_TYPE(rel->r_info)),
   ^~~~~~~~

Fix them by making Elf64_Mips_Rela a union

Signed-off-by: Harvey Hunt <harvey.hunt@imgtec.com>
Acked-by: Matt Redfearn <matt.redfearn@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/13683/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-08-03 09:00:55 +02:00
Aaro Koskinen
5c315e3984 MIPS: Octeon: Dlink_dsr-1000n.dts: add more leds.
Add more leds discovered by reverse engineering. Labels are according
to markings in the mechanics.

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Cc: linux-mips@linux-mips.org
Cc: devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/13466/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-08-02 14:00:17 +02:00
Aaro Koskinen
e1b7d0e285 MIPS: Octeon: Clean up GPIO definitions in dlink_dsr-1000n.dts.
Clean up GPIO definitions in dlink_dsr-1000n.dts.

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Cc: linux-mips@linux-mips.org
Cc: devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/13465/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-08-02 14:00:17 +02:00
Aaro Koskinen
86bee12f88 MIPS: Octeon: Delete built-in DTB pruning code for D-Link DSR-1000N.
Users will get more complete functionality by using the appended DTB,
so delete the legacy booting support for this board.

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Cc: linux-mips@linux-mips.org
Cc: devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/13464/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-08-02 14:00:16 +02:00
Jonas Gorski
b8f54f2cde MIPS: ZBOOT: copy appended dtb to the end of the kernel
Instead of rewriting the arguments, just move the appended dtb to where
the decompressed kernel expects it. This eliminates the need for special
casing vmlinuz.bin appended dtb files.

Signed-off-by: Jonas Gorski <jogo@openwrt.org>
Cc: Kevin Cernekee <cernekee@gmail.com>
Cc: Florian Fainelli <f.fainelli@gmail.com>
Cc: John Crispin <john@phrozen.org>
Cc: Paul Burton <paul.burton@imgtec.com>
Cc: James Hogan <james.hogan@imgtec.com>
Cc: Alban Bedel <albeu@free.fr>
Cc: Daniel Gimpelevich <daniel@gimpelevich.san-francisco.ca.us>
Cc: Antony Pavlov <antonynpavlov@gmail.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/13698/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-08-02 14:00:16 +02:00
Antony Pavlov
5214cae77c MIPS: devicetree: fix cpu interrupt controller node-names
Here is the quote from [1]:

    The unit-address must match the first address specified
    in the reg property of the node. If the node has no reg property,
    the @ and unit-address must be omitted and the node-name alone
    differentiates the node from other nodes at the same level

This patch adjusts MIPS dts-files and devicetree binding
documentation in accordance with [1].

    [1] Power.org(tm) Standard for Embedded Power Architecture(tm)
        Platform Requirements (ePAPR). Version 1.1 – 08 April 2011.
        Chapter 2.2.1.1 Node Name Requirements

Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Cc: Paul Burton <paul.burton@imgtec.com>
Cc: Zubair Lutfullah Kakakhel <Zubair.Kakakhel@imgtec.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Pawel Moll <pawel.moll@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Ian Campbell <ijc+devicetree@hellion.org.uk>
Cc: Kumar Gala <galak@codeaurora.org>
Cc: linux-mips@linux-mips.org
Cc: devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/13345/
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-28 12:35:12 +02:00
Maarten ter Huurne
9d1e7875fa MIPS: JZ4740: Probe OHCI platform device via DT
The DT fragment will select the ohci-platform driver, since that can
handle the JZ4740 OHCI just fine. While I don't have a JZ4740-based
board with anything connected to the USB host controller, I did test
the generic OHCI driver successfully on a JZ4770-based board.

The device is disabled by default; boards that want to use it can
override the "status" property. The mass-production Qi LB60 boards
don't use the USB host controller.

Signed-off-by: Maarten ter Huurne <maarten@treewalker.org>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: Paul Cercueil <paul@crapouillou.net>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/13104/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-13 19:09:24 +02:00
Florian Fainelli
80fa40acaa MIPS: BMIPS: Adjust mips-hpt-frequency for BCM7435
The CPU actually runs at 1405Mhz which gives us a 175625000 Hz MIPS timer
frequency (CPU frequency / 8).

Fixes: e4c7d00965 ("MIPS: BMIPS: Add BCM7435 dtsi")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: john@phrozen.org
Cc: cernekee@gmail.com
Cc: jaedon.shin@gmail.com
Patchwork: https://patchwork.linux-mips.org/patch/13132/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-13 17:44:53 +02:00
Purna Chandra Mandal
9125f19bbb MIPS: dts: pic32: Update dts to reflect new PIC32MZDA clk binding
- now clock nodes definition is merged with core .dtsi file
- only one rootclk is now part of DT
- clock clients also updated based on new binding doc

Signed-off-by: Purna Chandra Mandal <purna.mandal@microchip.com>
Signed-off-by: Joshua Henderson <joshua.henderson@microchip.com>
Cc: Michael Turquette <mturquette@baylibre.com>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: Kumar Gala <galak@codeaurora.org>
Cc: Ian Campbell <ijc+devicetree@hellion.org.uk>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Pawel Moll <pawel.moll@arm.com>
Cc: Sandeep Sheriker <sandeepsheriker.mallikarjun@microchip.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: linux-kernel@vger.kernel.org
Cc: linux-mips@linux-mips.org
Cc: linux-clk@vger.kernel.org
Cc: devicetree@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/13248/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-13 15:30:25 +02:00
Álvaro Fernández Rojas
2d52ee82b4 MIPS: BMIPS: Improve BCM6368 device tree
- Remove unneeded leds0 alias.
- Switch to bcm6345-l1-intc interrupt controller.
- Use interrupt-controller instead of periph_intc and cpu_intc.
- Add uart1 node.
- Single ohci and ehci nodes.
- Avoid using underscores in node names.
- Rename uart aliases to serial.
- Remove blank line in cpus node.

[ralf@linux-mips.org: fix references in bcm96368mvwg.dts so the file keeps
building.]

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Cc: f.fainelli@gmail.com
Cc: jogo@openwrt.org
Cc: cernekee@gmail.com
Cc: robh@kernel.org
Cc: simon@fire.lp0.eu
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Cc: devicetree@vger.kernel.org
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-13 14:02:10 +02:00
Álvaro Fernández Rojas
e3b992d028 MIPS: BMIPS: Improve BCM6328 device tree
- Remove unneeded leds0 alias.
- Switch to bcm6345-l1-intc interrupt controller.
- Use interrupt-controller instead of periph_intc and cpu_intc.
- Add uart1, ehci and ohci nodes.
- Refactor syscon and syscon-reboot.
- Avoid using underscores in node names.
- Rename uart aliases to serial.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Cc: f.fainelli@gmail.com
Cc: jogo@openwrt.org
Cc: cernekee@gmail.com
Cc: robh@kernel.org
Cc: simon@fire.lp0.eu
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Cc: devicetree@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/13043/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-13 14:02:09 +02:00
Álvaro Fernández Rojas
7537d273e2 MIPS: BMIPS: Add device tree example for BCM6358
This adds a device tree example for SFR Neufbox4 (Sercomm version), which
also serves as a real example for brcm,bcm6358-leds.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Acked-by: Rob Herring <robh@kernel.org>
Cc: f.fainelli@gmail.com
Cc: jogo@openwrt.org
Cc: cernekee@gmail.com
Cc: robh@kernel.org
Cc: simon@fire.lp0.eu
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Cc: devicetree@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/13041/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-13 14:02:09 +02:00
Jaedon Shin
69ca2b81c2 MIPS: BMIPS: Fix interrupt and remove needless properties
Fixes wrong bcm7425 SATA AHCI hardware interrupt property value with
periph_intc and SATA PHY unit address, and removes needless
brcm,broken-{ncq,phy} properties what are not used anywhere.

Signed-off-by: Jaedon Shin <jaedon.shin@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Cc: Kevin Cernekee <cernekee@gmail.com>
Cc: Dragan Stancevic <dragan.stancevic@gmail.com>
Cc: Linux-MIPS <linux-mips@linux-mips.org>
Patchwork: https://patchwork.linux-mips.org/patch/13017/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-13 14:02:05 +02:00
Jaedon Shin
5c40d493e2 MIPS: BMIPS: Add support UART, I2C, SATA device
Add UART, I2C, SATA device tree nodes on Broadcom BCM7xxx MIPS-based
platforms.

Signed-off-by: Jaedon Shin <jaedon.shin@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Cc: Kevin Cernekee <cernekee@gmail.com>
Cc: Dragan Stancevic <dragan.stancevic@gmail.com>
Cc: Linux-MIPS <linux-mips@linux-mips.org>
Patchwork: https://patchwork.linux-mips.org/patch/13016/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-13 14:02:04 +02:00
Matt Redfearn
aadeec4df9 MIPS: tools: Build relocs tool
Build the relocs tool as part of the kbuild

Signed-off-by: Matt Redfearn <matt.redfearn@imgtec.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: kernel-hardening@lists.openwall.com
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/12980/
Patchwork: https://patchwork.linux-mips.org/patch/13242/
Patchwork: https://patchwork.linux-mips.org/patch/13233/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-13 14:02:02 +02:00
Matt Redfearn
766c580356 MIPS: tools: Add relocs tool
This tool is based on the x86/boot/tools/relocs tool.

It parses the relocations present in the vmlinux elf file, building a
table of relocations that will be necessary to run the kernel from an
address other than its link address. This table is inserted into the
vmlinux elf, in the .data.relocs section. The table is subsequently used
by the code in arch/mips/kernel/relocate.c (added later) to relocate the
kernel.

The tool, by default, also marks all relocation sections as 0 length.
This is due to objcopy currently being unable to handle copying the
relocations between 64 and 32 bit elf files as is done when building a
64 bit kernel.

Signed-off-by: Matt Redfearn <matt.redfearn@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: kernel-hardening@lists.openwall.com
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/12981/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-13 14:02:01 +02:00
Martin Schiller
8571e645d1 pinctrl/lantiq: update devicetree binding in dts file
This patch updates the compatible string in the easy50712.dts file to the new
"lantiq,danube-pinctrl".

Signed-off-by: Martin Schiller <mschiller@tdt.de>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Cc: robh+dt@kernel.org
Cc: pawel.moll@arm.com
Cc: mark.rutland@arm.com
Cc: ijc+devicetree@hellion.org.uk
Cc: galak@codeaurora.org
Cc: john@phrozen.org
Cc: hauke@hauke-m.de
Cc: jogo@openwrt.org
Cc: daniel.schwierzeck@gmail.com
Cc: linux-gpio@vger.kernel.org
Cc: devicetree@vger.kernel.org
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/11589/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-13 14:01:59 +02:00
Antony Pavlov
98c1c5078d MIPS: ath79: add initial support for DPT-Module
The following features are supported:

  * UART;
  * SPI-flash;
  * USB host;
  * GPIO key and LED.

Links:

  * https://dptechnics.com/shop/index.php?route=product/product&path=59&product_id=50
  * https://dptechnics.com/shop/index.php?route=product/product&path=59&product_id=63

Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Cc: Daan Pape <daan@dptechnics.com>
Cc: linux-mips@linux-mips.org
Cc: devicetree@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/12886/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-13 14:01:47 +02:00
Antony Pavlov
930c54ff39 MIPS: ath79: add initial support for Onion Omega
The following features are supported:

  * UART;
  * SPI-flash;
  * USB host;
  * GPIO key and LED.

Please see https://onion.io/omega for details.

Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Cc: Gabor Juhos <juhosg@openwrt.org>
Cc: Alban Bedel <albeu@free.fr>
Cc: L. D. Pinney <ldpinney@gmail.com>
Cc: Boken Lin <bl@onion.io>
Cc: Jacky Huang <huangfangcheng@163.com>
Cc: linux-mips@linux-mips.org
Cc: devicetree@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/12884/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-13 14:01:47 +02:00
Antony Pavlov
3b9ec1b325 MIPS: ath79: add initial support for Dragino MS14 (Dragino 2)
The following features are supported:

  * UART;
  * SPI-flash;
  * USB host;
  * GPIO keys and LEDs.

Links:

    * http://www.dragino.com/products/mother-board/item/71-ms14-p.html
    * https://wiki.openwrt.org/toh/dragino/ms14

Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Cc: Gabor Juhos <juhosg@openwrt.org>
Cc: Alban Bedel <albeu@free.fr>
Cc: linux-mips@linux-mips.org
Cc: devicetree@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/12882/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-13 14:01:46 +02:00
Antony Pavlov
2c3694d2e6 MIPS: ath79: add initial support for TP-LINK MR3020
The following features are supported:

  * UART;
  * SPI-flash;
  * USB host;
  * GPIO keys and LEDs.

Links:

  * http://www.tp-link.com/en/products/details/?model=TL-MR3020
  * http://wiki.openwrt.org/toh/tp-link/tl-mr3020
  * https://wikidevi.com/wiki/TP-LINK_TL-MR3020

Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Cc: Gabor Juhos <juhosg@openwrt.org>
Cc: Alban Bedel <albeu@free.fr>
Cc: linux-mips@linux-mips.org
Cc: devicetree@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/12880/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-13 14:01:46 +02:00
Antony Pavlov
1e6a3492e7 MIPS: dts: qca: introduce AR9331 devicetree
This patch introduces devicetree for Atheros AR9331 SoC (AKA Hornet).
The AR9331 chip is a Wi-Fi System-On-Chip (WiSOC),
typically used in very cheap Access Points and Routers.

Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Cc: Gabor Juhos <juhosg@openwrt.org>
Cc: Alban Bedel <albeu@free.fr>
Cc: linux-mips@linux-mips.org
Cc: devicetree@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/12878/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-13 14:01:45 +02:00
Antony Pavlov
3bdf1071ba MIPS: ath79: update devicetree clock support for AR9132
Current ath79 clock.c code does not read reference clock and
pll setup from devicetree. E.g. you can set any clock rate value
in board DTS but it will have no effect on the real clk calculation.

This patch fixes some AR9132 devicetree clock support defects:

  * clk initialization function ath79_clocks_init_dt_ng()
    is introduced; it actually gets pll block base register
    address and reference clock from devicetree;
  * pll register parsing code is moved to the separate
    ar724x_clk_init() function; this function
    can be called from platform code or from devicetree code.

Also mips_hpt_frequency value is set from dt, so the appropriate
clock parameter is added to the cpu@0 devicetree node.

The same approach can be used for adding AR9331 devicetree support.

Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Cc: Gabor Juhos <juhosg@openwrt.org>
Cc: Alban Bedel <albeu@free.fr>
Cc: Michael Turquette <mturquette@baylibre.com>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: linux-clk@vger.kernel.org
Cc: linux-mips@linux-mips.org
Cc: devicetree@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/12876/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-13 14:01:45 +02:00
Antony Pavlov
af5ad0de22 MIPS: ath79: Introduce <dt-bindings/clock/ath79-clk.h>
The include/dt-bindings/clock/ath79-clk.h header file
is introduced so we can use symbolic identifiers for SoC clocks.

Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Cc: Gabor Juhos <juhosg@openwrt.org>
Cc: Alban Bedel <albeu@free.fr>
Cc: Michael Turquette <mturquette@baylibre.com>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: linux-mips@linux-mips.org
Cc: linux-clk@vger.kernel.org
Cc: devicetree@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/12875/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-13 14:01:45 +02:00
Antony Pavlov
83fe838466 MIPS: dts: qca: ar9132: use short references for dt nodes
Here are some Sascha Hauer's arguments for using aliases in the dts
files:

 - using aliases reduces the number of indentations in dts files;

 - dts files become independent of the layout of the dtsi files
   (it becomes possible to introduce another bus {} hierarchy between
   a toplevel bus and the devices when you have to);

 - less chances for typos. if &i2c2 does not exist you get an error.
   If instead you duplicate the whole path in the dts file a typo
   in the path will just create another node.

Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Cc: Alban Bedel <albeu@free.fr>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Frank Rowand <frowand.list@gmail.com>
Cc: Grant Likely <grant.likely@linaro.org>
Cc: linux-mips@linux-mips.org
Cc: devicetree@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/12873/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-13 14:01:45 +02:00
Antony Pavlov
2cdfec1bbb MIPS: dts: qca: ar9132_tl_wr1043nd_v1.dts: drop unused alias node
The TP-LINK TL-WR1043ND board has only one serial port,
so replacing the default of 0 with 0 does nothing useful.

Moreover, the correct name for aliases node is "aliases" not "alias".

An overview of the "aliases" node usage can be found
on the device tree usage page at devicetree.org [1].

Also please see chapter 3.3 ("Aliases node") of the ePAPR 1.1 [2].

[1] http://devicetree.org/Device_Tree_Usage#aliases_Node
[2] https://www.power.org/documentation/epapr-version-1-1/

Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Acked-by: Alban Bedel <albeu@free.fr>
Cc: linux-mips@linux-mips.org
Cc: devicetree@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/12872/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-13 14:01:45 +02:00
Aaro Koskinen
842c1e2c4a MIPS: Octeon: Add DTS for EdgeRouter Lite
Add DTS for EdgeRouter Lite that is usable as is without any "pruning"
with APPENDED_DTB.

Compared to builtin generic DTB, we can avoid errors and delays from
probing non-existent I2C devices.

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-13 14:01:44 +02:00
Aaro Koskinen
fa0a497b9e MIPS: Octeon: Add DTS for D-Link DSR-1000N
Add DTS for D-Link DSR-1000N that is usable as is without any "pruning"
with APPENDED_DTB. Split out the common parts from octeon_3xxx.dts
into octeon_3xxx.dtsi.

Compared to builtin generic DTB, we can specificy fixed links properly
and avoid probing non-existent I2C devices.

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Cc: David Daney <ddaney.cavm@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: devicetree@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/12840/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-13 14:01:44 +02:00
Alban Bedel
b3f0a250d6 MIPS: ath79: Add zboot debug serial support
Reuse the early printk code to support the serial in zboot. We copy
early_printk.c instead of referencing it because we need to build a
different object file for the normal kernel and zboot.

Signed-off-by: Alban Bedel <albeu@free.fr>
Cc: Andrew Bresticker <abrestic@chromium.org>
Cc: Alex Smith <alex.smith@imgtec.com>
Cc: Wu Zhangjin <wuzhangjin@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/12234/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-13 14:01:37 +02:00
Alban Bedel
ea3a7085bf MIPS: ath79: Remove the builtin DTB support
Now that appended DTB is usable we can drop the builtin DTB support.

Signed-off-by: Alban Bedel <albeu@free.fr>
Cc: Felix Fietkau <nbd@openwrt.org>
Cc: Antony Pavlov <antonynpavlov@gmail.com>
Cc: Gabor Juhos <juhosg@openwrt.org>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/12231/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-13 14:01:37 +02:00
Florian Fainelli
904c3b4952 MIPS: BMIPS: Remove maxcpus from BCM97435SVMB DTS
Now that SMP properly works on 7435, do not restrict the number of core,
unleash them all.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Cc: john@phrozen.org
Cc: cernekee@gmail.com
Cc: jon.fraser@broadcom.com
Cc: jaedon.shin@gmail.com
Cc: dragan.stancevic@gmail.com
Cc: jogo@openwrt.org
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/12379/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-09 12:00:01 +02:00
Florian Fainelli
a5b143ec51 MIPS: BMIPS: Add missing 7038 L1 register cells to BCM7435
7435 has 4 7038 L1 base register address for each of its Core + TP (for a total
of 4 threads of execution), add the two missing cells for Core 1. We are
providing HW interrupts 2/3 even for Core 1/TP0/TP1 because that's what they
are, and we can later decide to remap these in software to provide proper
interrupt affinity/parenting.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Cc: john@phrozen.org
Cc: cernekee@gmail.com
Cc: jon.fraser@broadcom.com
Cc: jaedon.shin@gmail.com
Cc: dragan.stancevic@gmail.com
Cc: jogo@openwrt.org
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/12378/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-09 12:00:01 +02:00
Florian Fainelli
6870e707c6 MIPS: BMIPS: Fix gisb-arb compatible string for 7435
The SUN GISB arbiter was added with the wrong compatible string, leading to
using the wrong register layout, use the correct compatible string for this
chip: brcm,bcm7435-gisb-arb.

Fixes: 8394968be4c7 ("MIPS: BMIPS: Add BCM7435 dtsi")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Cc: blogic@openwrt.org
Cc: cernekee@gmail.com
Cc: jogo@openwrt.org
Cc: jaedon.shin@gmail.com
Cc: pgynther@google.com
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/12285/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-04-04 15:25:32 +02:00
Antony Pavlov
f7f797cfc6 MIPS: dts: qca: ar9132_tl_wr1043nd_v1.dts: use "ref" for reference clock name
Current ath79 clock.c code does not read reference clock and
pll setup from devicetree. The ar724x_clocks_init() function
recreates the clocks from scratch so devicetree clock
information is dropped. After adding the code which picked up
reference clock from devicetree I have found
that kernel does not boot anymore. The SPI and UART drivers
can't get clk; here are the bootlog error messages:

    of_serial: probe of 18020000.uart failed with error -22
    ath79-spi: probe of 1f000000.spi failed with error -22

The problem is that clock code assumes that reference clock
name is "ref" but current dts-file uses another name: "oscillator".

This patch fixes the problem by changing external oscillator
dt node name to "ref".

Please note that there is an alternative solution for the problem:

    > --- a/arch/mips/boot/dts/qca/ar9132_tl_wr1043nd_v1.dts
    > +++ b/arch/mips/boot/dts/qca/ar9132_tl_wr1043nd_v1.dts
    > @@ -16,6 +16,7 @@
    >
    >         extosc: oscillator {
    >                 compatible = "fixed-clock";
    > +               clock-output-names = "ref";
    >                 #clock-cells = <0>;
    >                 clock-frequency = <40000000>;
    >         };

Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Cc: Alban Bedel <albeu@free.fr>
Cc: Michael Turquette <mturquette@baylibre.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: linux-clk@vger.kernel.org
Cc: linux-mips@linux-mips.org
Cc: devicetree@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/12874/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-04-03 12:32:10 +02:00
Antony Pavlov
2b885ea66f dt-bindings: clock: qca,ath79-pll: fix copy-paste typos
Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Acked-by: Rob Herring <robh@kernel.org>
Cc: Alban Bedel <albeu@free.fr>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: linux-mips@linux-mips.org
Cc: devicetree@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/12869/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-04-03 12:32:09 +02:00
Alban Bedel
8961b28f09 MIPS: zboot: Remove copied source files on clean
The copied source files must be added to the extra-y list to have them
removed on clean.

Signed-off-by: Alban Bedel <albeu@free.fr>
Cc: Andrew Bresticker <abrestic@chromium.org>
Cc: Alex Smith <alex.smith@imgtec.com>
Cc: Wu Zhangjin <wuzhangjin@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/12233/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-04-03 10:37:21 +02:00
Alban Bedel
c50ec67875 MIPS: zboot: Fix the build with XZ compression on older GCC versions
Some older GCC version (at least 4.6) emits calls to __bswapsi2() when
building the XZ decompressor. The link of the compressed image then
fails with the following error:

arch/mips/boot/compressed/decompress.o: In function '__fswab32':
include/uapi/linux/swab.h:60: undefined reference to '__bswapsi2'

Add bswapsi.o to the link to fix the build with these versions.

Signed-off-by: Alban Bedel <albeu@free.fr>
Cc: Andrew Bresticker <abrestic@chromium.org>
Cc: Alex Smith <alex.smith@imgtec.com>
Cc: Wu Zhangjin <wuzhangjin@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/12232/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-04-03 10:37:13 +02:00
Linus Torvalds
b7aae4a9d0 regmap: Updates for v4.6
This has been a very busy release for regmap, not just in cleaning up
 the mess we got ourselves into with the endianness handling but also in
 other areas too:
 
  - Fixes for the endianness handling so that we now explicltly default
    to little endian (the code used to do this by accident).  This
    fixes handling of explictly specified endianness on big endian
    systems.
  - Optimisation of the implementation of register striding.
  - A refectoring of the _update_bits() code to reduce duplication.
  - Fixes and enhancements for the interrupt implementation which
    make it easier to use in a wider range of systems.
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Merge tag 'regmap-v4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap

Pull regmap updates from Mark Brown:
 "This has been a very busy release for regmap, not just in cleaning up
  the mess we got ourselves into with the endianness handling but also
  in other areas too:

   - Fixes for the endianness handling so that we now explicitly default
     to little endian (the code used to do this by accident).  This
     fixes handling of explictly specified endianness on big endian
     systems.

   - Optimisation of the implementation of register striding.

   - A refectoring of the _update_bits() code to reduce duplication.

   - Fixes and enhancements for the interrupt implementation which make
     it easier to use in a wider range of systems"

* tag 'regmap-v4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap: (28 commits)
  regmap: irq: add devm apis for regmap_{add,del}_irq_chip
  regmap: replace regmap_write_bits()
  regmap: irq: Enable irq retriggering for nested irqs
  regmap: add regmap_fields_force_xxx() macros
  regmap: add regmap_field_force_xxx() macros
  regmap: merge regmap_fields_update_bits() into macro
  regmap: merge regmap_fields_write() into macro
  regmap: add regmap_fields_update_bits_base()
  regmap: merge regmap_field_update_bits() into macro
  regmap: merge regmap_field_write() into macro
  regmap: add regmap_field_update_bits_base()
  regmap: merge regmap_update_bits_check_async() into macro
  regmap: merge regmap_update_bits_check() into macro
  regmap: merge regmap_update_bits_async() into macro
  regmap: merge regmap_update_bits() into macro
  regmap: add regmap_update_bits_base()
  regcache: flat: Introduce register strider order
  regcache: Introduce the index parsing API by stride order
  regmap: core: Introduce register stride order
  regmap: irq: add devm apis for regmap_{add,del}_irq_chip
  ...
2016-03-15 21:22:26 -07:00
Aaro Koskinen
ba9e72c229 MIPS: Fix build with DEBUG_ZBOOT and MACH_JZ4780
Ingenic SoC declares ZBOOT support, but debug definitions are missing
for MACH_JZ4780 resulting in a build failure when DEBUG_ZBOOT is set.
The UART addresses are same as with JZ4740, so fix by covering JZ4780
with those as well.

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/12830/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-03-13 10:50:46 +01:00
Mark Brown
320549a224 regmap: mmio: Revert to v4.4 endianness handling
Commit 29bb45f25f (regmap-mmio: Use native endianness for read/write)
attempted to fix some long standing bugs in the MMIO implementation for
big endian systems caused by duplicate byte swapping in both regmap and
readl()/writel() which affected MIPS systems as when they are in big
endian mode they flip the endianness of all registers in the system, not
just the CPU.  MIPS systems had worked around this by declaring regmap
using IPs as little endian which is inaccurate, unfortunately the issue
had not been reported.

Sadly the fix makes things worse rather than better.  By changing the
behaviour to match the documentation it caused behaviour changes for
other IPs which broke them and by using the __raw I/O accessors to avoid
the endianness swapping in readl()/writel() it removed some memory
ordering guarantees and could potentially generate unvirtualisable
instructions on some architectures.

Unfortunately sorting out all this mess in any half way sensible fashion
was far too invasive to go in during an -rc cycle so instead let's go
back to the old broken behaviour for v4.5, the better fixes are already
queued for v4.6.  This does mean that we keep the broken MIPS DTs for
another release but that seems the least bad way of handling the
situation.

Reported-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-02-05 11:22:04 +00:00
Mark Brown
25d6463e48 MIPS: dt: Explicitly specify native endian behaviour for syscon
On many MIPS systems the endianness of IP blocks is kept the same as
that of the CPU by the hardware.  This includes the system controllers
on these systems which are controlled via syscon which uses the regmap
API which used readl() and writel() to interact with the hardware,
meaning that all writes are converted to little endian when writing to
the hardware.  This caused a bad interaction with the regmap core in big
endian mode since it was not aware of the byte swapping and so ended up
performing little endian writes.

Unfortunately when this issue was noticed it was addressed by updating
the DT for the affected devices to specify them as little endian.  This
happened to work since it resulted in two endianness swaps which
cancelled each other out and gave little endian behaviour but meant that
the DT was clearly not accurately describing the hardware.

The intention of commit 29bb45f25f (regmap-mmio: Use native
endianness for read/write) was to fix this by making regmap default to
native endianness but this breaks most other MMIO users where the
hardware has a fixed endianness and the implementation uses the __raw
accessors which are not intended to be used outside of architecture
code.  Instead use the newly added native-endian DT property to say
exactly what we want for these systems.

Fixes: 29bb45f25f (regmap-mmio: Use native endianness for read/write)
Reported-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Mark Brown <broonie@kernel.org>
Acked-by: Ralf Baechle <ralf@linux-mips.org>
2016-01-27 18:49:42 +00:00
Linus Torvalds
e2464688b5 Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus
Pull MIPS updates from Ralf Baechle:
 "This is the main pull request for MIPS for 4.5 plus some 4.4 fixes.

  The executive summary:

   - ATH79 platform improvments, use DT bindings for the ATH79 USB PHY.
   - Avoid useless rebuilds for zboot.
   - jz4780: Add NEMC, BCH and NAND device tree nodes
   - Initial support for the MicroChip's DT platform.  As all the device
     drivers are missing this is still of limited use.
   - Some Loongson3 cleanups.
   - The unavoidable whitespace polishing.
   - Reduce clock skew when synchronizing the CPU cycle counters on CPU
     startup.
   - Add MIPS R6 fixes.
   - Lots of cleanups across arch/mips as fallout from KVM.
   - Lots of minor fixes and changes for IEEE 754-2008 support to the
     FPU emulator / fp-assist software.
   - Minor Ralink, BCM47xx and bcm963xx platform support improvments.
   - Support SMP on BCM63168"

* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (84 commits)
  MIPS: zboot: Add support for serial debug using the PROM
  MIPS: zboot: Avoid useless rebuilds
  MIPS: BMIPS: Enable ARCH_WANT_OPTIONAL_GPIOLIB
  MIPS: bcm63xx: nvram: Remove unused bcm63xx_nvram_get_psi_size() function
  MIPS: bcm963xx: Update bcm_tag field image_sequence
  MIPS: bcm963xx: Move extended flash address to bcm_tag header file
  MIPS: bcm963xx: Move Broadcom BCM963xx image tag data structure
  MIPS: bcm63xx: nvram: Use nvram structure definition from header file
  MIPS: bcm963xx: Add Broadcom BCM963xx board nvram data structure
  MAINTAINERS: Add KVM for MIPS entry
  MIPS: KVM: Add missing newline to kvm_err()
  MIPS: Move KVM specific opcodes into asm/inst.h
  MIPS: KVM: Use cacheops.h definitions
  MIPS: Break down cacheops.h definitions
  MIPS: Use EXCCODE_ constants with set_except_vector()
  MIPS: Update trap codes
  MIPS: Move Cause.ExcCode trap codes to mipsregs.h
  MIPS: KVM: Make kvm_mips_{init,exit}() static
  MIPS: KVM: Refactor added offsetof()s
  MIPS: KVM: Convert EXPORT_SYMBOL to _GPL
  ...
2016-01-24 12:50:56 -08:00
Alban Bedel
dbb9831453 MIPS: zboot: Add support for serial debug using the PROM
As most platforms implement the PROM serial interface prom_putchar()
add a simple bridge to allow re-using this code for zboot.

Signed-off-by: Alban Bedel <albeu@free.fr>
Cc: Alex Smith <alex.smith@imgtec.com>
Cc: Andrew Bresticker <abrestic@chromium.org>
Cc: Wu Zhangjin <wuzhangjin@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/11811/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-01-24 04:05:51 +01:00
Alban Bedel
25f66096ac MIPS: zboot: Avoid useless rebuilds
Add dummy.o to the targets list, and fill targets automatically from
$(vmlinuzobjs) to avoid having to maintain two lists.

When building with XZ compression copy ashldi3.c to the build
directory to use a different object file for the kernel and zboot.
Without this the same object file need to be build with different
flags which cause a rebuild at every run.

Signed-off-by: Alban Bedel <albeu@free.fr>
Cc: linux-mips@linux-mips.org
Cc: Alex Smith <alex.smith@imgtec.com>
Cc: Wu Zhangjin <wuzhangjin@gmail.com>
Cc: Andrew Bresticker <abrestic@chromium.org>
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/11810/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-01-24 04:05:03 +01:00