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ARM: bcm2835: device tree updates

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The SoC's SDHCI and MMC controllers are added to device tree, and enabled
 in the Raspberry Pi board device tree. Some fixed clocks are added to the
 device tree to support these drivers. These could be replaced by real
 clocks in the future.
 
 A hard-coded memreserve is removed from device tree; the bootloader should
 specify the correct memory node content instead, since the memory layout
 is dynamic.
 
 This branch is based on v3.8-rc3.
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Merge tag 'bcm2835-for-3.9-dt' of git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-rpi into next/dt

From Stephen Warren:
ARM: bcm2835: device tree updates

The SoC's SDHCI and MMC controllers are added to device tree, and enabled
in the Raspberry Pi board device tree. Some fixed clocks are added to the
device tree to support these drivers. These could be replaced by real
clocks in the future.

A hard-coded memreserve is removed from device tree; the bootloader should
specify the correct memory node content instead, since the memory layout
is dynamic.

This branch is based on v3.8-rc3.

* tag 'bcm2835-for-3.9-dt' of git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-rpi:
  ARM: bcm2835: fix clock node aliasing in device tree
  ARM: bcm2835: add I2C controllers to DT
  ARM: bcm2835: add SDHCI node to DT
  ARM: bcm2835 rpi: remove hard-coded memreserve from DT

Signed-off-by: Olof Johansson <olof@lixom.net>
This commit is contained in:
Olof Johansson 2013-01-29 09:55:20 -08:00
commit e28c99a85b
2 changed files with 59 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
arch/arm/boot/dts/bcm2835-rpi-b.dts
View File

@ -1,5 +1,4 @@
/dts-v1/;
/memreserve/ 0x0c000000 0x04000000;
/include/ "bcm2835.dtsi"
/ {
@ -25,3 +24,18 @@ alt3: alt3 {
brcm,function = <7>; /* alt3 */
};
};
&i2c0 {
status = "okay";
clock-frequency = <100000>;
};
&i2c1 {
status = "okay";
clock-frequency = <100000>;
};
&sdhci {
status = "okay";
bus-width = <4>;
};

44
arch/arm/boot/dts/bcm2835.dtsi
View File

@ -63,5 +63,49 @@ gpio: gpio {
interrupt-controller;
#interrupt-cells = <2>;
};
i2c0: i2c@20205000 {
compatible = "brcm,bcm2835-i2c";
reg = <0x7e205000 0x1000>;
interrupts = <2 21>;
clocks = <&clk_i2c>;
status = "disabled";
};
i2c1: i2c@20804000 {
compatible = "brcm,bcm2835-i2c";
reg = <0x7e804000 0x1000>;
interrupts = <2 21>;
clocks = <&clk_i2c>;
status = "disabled";
};
sdhci: sdhci {
compatible = "brcm,bcm2835-sdhci";
reg = <0x7e300000 0x100>;
interrupts = <2 30>;
clocks = <&clk_mmc>;
status = "disabled";
};
};
clocks {
compatible = "simple-bus";
#address-cells = <1>;
#size-cells = <0>;
clk_mmc: mmc {
compatible = "fixed-clock";
reg = <0>;
#clock-cells = <0>;
clock-frequency = <100000000>;
};
clk_i2c: i2c {
compatible = "fixed-clock";
reg = <1>;
#clock-cells = <0>;
clock-frequency = <150000000>;
};
};
};