In some special circumstances, may be need to reparent clk for sclk_sdio_src.
Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
>From Rockchips fractional divider description:
3.1.9 Fractional divider usage
To get specific frequency, clocks of I2S, SPDIF, UARTcan be generated by
fractional divider. Generally you must set that denominator is 20 times
larger than numerator to generate precise clock frequency. So the
fractional divider applies only to generate low frequency clock like
I2S, UART.
Therefore add a special approximation function that handles this
special requirement.
Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
rk3128 and rk3126 have some gate registers describe differences.
So need to make some distinctions.
The RK3126 and RK3128 Same clock description we move it to
the common clock branches.
And the different clks description use the own clock branches.
Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
the bus/periph/nclk_ddrupctl/pclk_ddrmon/pclk_acodecphy/pclk_pmu
no driver to handle them,
Chip design requirements for these clock to always on.
Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Rename some of clks to keep the consistency with the TRM.
Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
1. fix up the parent name
2. remove the CLK_IGNORE_UNUSED flag for some clk not need to always on.
3. fix up some clks regs describe error.
Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Add the description of the missing clock,
make the clock more complete.
Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
fix up the lock_shift describe error.
remove the ROCKCHIP_PLL_SYNC_RATE flag for gpll.
Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com>
Signed-off-by: Andy Yan <andy.yan@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
fix up the cpuclk rates table for support more freqs.
fix up the mux_core_mask describe error.
Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com>
Signed-off-by: Andy Yan <andy.yan@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
The jtag clk no driver to handle them.
But this clk need enable,so make it as critical.
The ddrphy/ddrupctl clks no driver to handle them,
Chip design requirements for these clock to always on,
The pmu_hclk_otg0 is Chip design defect, must be always on,
Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
The atclk/dbg/jtag/hsic-xin12m/pclk_core clks no driver to handle them.
But this clks need enable,so make it as ignore_unused for now.
The ddrupctl0/ddrupctl1/publ0/publ1 clks no driver to handle them,
Chip design requirements for these clock to always on,
The pmu_hclk_otg0 is Chip design defect, must be always on,
Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
The jtag/bus/peri/initmem/rom/stimer/phy clks no driver to handle them.
But this clks need enable,so make it as critical.
The ddrupctl/ddrmon/ddrphy clks no driver to handle them,
Chip design requirements for these clock to always on,
The hclk_otg_pmu is Chip design defect, must be always on,
The new document will update the description of this clock.
All these non-noc/non-arbi clocks,IC suggest always on,
Because it's have some order limitation, between the NOC clock switch
and bus IDLE(or pd on/off).
The software is not very good to solve this constraint.
Always on these clocks, has no effect on the system power consumption.
The new document will update the description of these clock.
Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
No driver to handle this clk yet, but chip design requiress for this clock
supplying the ddr controller to be always on.
Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Add the clock tree definition for the new rk3128 SoC.
And it also applies to the RK3126 SoC.
Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
This patch exports related BUS/VPU/RGA/HDCP/IEP/TSP/WIFI/
VIO/USB/EFUSE/GPU/CRYPTO clocks for dts reference.
Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
clk_testout1 and clk_testout2 are used for camera handling, so add their ids.
Signed-off-by: Eddie Cai <eddie.cai.linux@gmail.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
support more cpu freq, and add armcore div setting.
Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
as well as fixups of the clock-ids on rk3368 timers, which were unused
and completely wrong (more and differently named timers).
Also there is one new clock on rk3328 using the muxgrf type, a fix for
pll enablement which should wait for the pll to lock before continuing,
some more critical clocks and the rename of the rk1108 to rv1108, as the
soc seems to have been using a preliminary name before its actual release.
The plan is to have the driver changes (pinctrl, clk) go through the
respective maintainer trees and once everything landed in mainline do
the rename of the devicetree files. With the dts-include change in the
clock rename, we also keep everything compiling and thus bisectability.
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Merge tag 'v4.12-rockchip-clk1' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip into clk-next
Pull rockchip clk driver updates from Heiko Stuebner:
General rockchip clock changes for 4.12. Contains some new clock-ids
as well as fixups of the clock-ids on rk3368 timers, which were unused
and completely wrong (more and differently named timers).
Also there is one new clock on rk3328 using the muxgrf type, a fix for
pll enablement which should wait for the pll to lock before continuing,
some more critical clocks and the rename of the rk1108 to rv1108, as the
soc seems to have been using a preliminary name before its actual release.
The plan is to have the driver changes (pinctrl, clk) go through the
respective maintainer trees and once everything landed in mainline do
the rename of the devicetree files. With the dts-include change in the
clock rename, we also keep everything compiling and thus bisectability.
* tag 'v4.12-rockchip-clk1' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip:
clk: rockchip: add pll_wait_lock for pll_enable
clk: rockchip: rename RK1108 to RV1108
dt-bindings: rk1108-cru: rename RK1108 to RV1108
clk: rockchip: mark some rk3368 core-clks as critical
clk: rockchip: export SCLK_TIMERXX id for timers on rk3368
clk: rockchip: describe clk_gmac using the new muxgrf type on rk3328
clk: rockchip: add clock ids for timer10-15 of RK3368 SoCs
clk: rockchip: fix up rk3368 timer-ids
clk: rockchip: add rk3328 clk_mac2io_ext ID
clk: rockchip: Set "ignore unused" for PMU M0 clocks on rk3399
If pll is power down,when power up pll need wait pll lock.
The reference documents section:
PLL frequency change and lock check
Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Rockchip finally named the SOC as RV1108, so change it.
Signed-off-by: Andy Yan <andy.yan@rock-chips.com>
[include rename in rk1108.dtsi to prevent compile errors]
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
With the newly introduced clk type for muxes in the grf we now can
describe some missing clocks, like the clk_gmac2io and clk_gmac2phy
that selects between clk_mac2io_src and gmac_clkin based on a bit
set in the general register files.
Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
The shared uart-pll is on boot a child of the apll that can get changed
by cpu frequency scaling. So move it away to the more stable gpll to
make sure the uart doesn't break on cpu frequency changes.
This turned up during the 4.11 merge-window when commit
6a171b2993 ("serial: 8250_dw: Allow hardware flow control to be used")
added general termios enablement making the uart on rk3036 change
frequency and thus making it susceptible for the frequency scaling issue.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
The mux_pll_src_apll_dpll_gpll_usb480m_p parent list was missing a ","
between the 3rd and 4th parent names, making them fall together and thus
lookups fail. Fix that.
Fixes: 5190c08b29 ("clk: rockchip: add clock controller for rk3036")
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
The PMU Cortex M0 on rk3399 is intended to be used for things like
DDRFreq transitions, suspend/resume, and other things that are the
purview of ARM Trusted Firmware and not the kernel. As such, the
kernel shouldn't be messing with the clocks. Add CLK_IGNORE_UNUSED to
these clocks.
Without this change, the following was observed on a Chromebook with a
rk3399 (using not-yet-upstream ARM Trusted Firmware code and
not-yet-upstream kernel code based on kernel-4.4):
1. We init the clock framework.
2. We start up "DDRFreq", which causes ATF to occasionally fire up the
M0 for transitions. Each time ATF fires up the M0 it will turn on
these clocks and each time it is done it will turn them off.
3. We finally get to the the part of the kernel that calls
clk_disable_unused() and we disables the clocks.
You can see the race above. Basically everything is fine as long as
ARM Trusted Firmware isn't starting up the M0 at exactly the same time
that the kernel is disabling unused clocks. ...but if the race
happens then we go boom.
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
NIU clocks are related to the interconnect and it's important to other blocks.
Since we don't have a driver to handle it, we should always enable it to avoid
casually close.
Make all of them critical,so that we don't have to each clock on its own
once things break.
Signed-off-by: Jacob Chen <jacob-chen@iotwrt.com>
[dropped the matching CLK_IGNORE_UNUSED flags]
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Reference the newly added vip clock-ids in the clock-tree.
Signed-off-by: Jacob Chen <jacob-chen@iotwrt.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
The range of the pclk_edp_div_con is [13:8] and 6 bits, not 5.
Reported-by: Lin Huang <hl@rock-chips.com>
Signed-off-by: Xing Zheng <zhengxing@rock-chips.com>
Tested-by: Lin Huang <hl@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Add the newly added clock ids to the clock entries of the rk3066/rk3188
clock driver. We won't be needing them in the kernel for a bit yet
but as they're used in the new u-boot ddr setup code/dts we should make
sure the clock ids stay identical and do not differ.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Reference the newly added isp clock-ids in the clock-tree.
Signed-off-by: Jacob Chen <jacob-chen@iotwrt.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
When we used to defer setting the "grf" member to
rockchip_clk_get_grf() it was important to init the "grf" member to an
error value in rockchip_clk_init(). With recent changes, we now set
"grf" right in rockchip_clk_init() (two lines below the place where we
initted it). That makes the old init useless. Get rid of it.
Fixes: 6f339dc271 ("clk: rockchip: lookup General Register Files in rockchip_clk_init")
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Add the clock tree definition for the new rk3328 SoC.
Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
The rk3328's pll and clock are similar with rk3036's,
it different with pll_mode_mask, the rk3328 soc
pll mode only one bit(rk3036 soc have two bits)
so these should be independent and separate from
the series of rk3328s.
Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
With the newly introduced clk type for muxes in the grf we now can
describe some missing clocks, like the aclk_vcodec that selects between
aclk_vdpu and aclk_vepu based on a bit set in the general register files.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Rockchip socs often have some tiny number of muxes not controlled from
the core clock controller but through bits set in the general register
files. Add a clock-type that can control these as well, so that we
don't need to work around them being absent.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Pull rockchip clk driver updates from Heiko Stuebner:
A new clock controller for the rk1108 soc (single-core Cortex-A7+DSP),
a fix making sure the cpuclk rate is actually valid, before trying to
set it and a copy-paste fix for the rk3399's testclk.
* tag 'v4.10-rockchip-clk2' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip:
clk: rockchip: add clock controller for rk1108
dt-bindings: add documentation for rk1108 cru
clk: rockchip: add dt-binding header for rk1108
clk: rockchip: fix copy-paste error in rk3399 testclk
clk: rockchip: validity should be checked prior to cpu clock rate change
Add the clock tree definition and driver for rk1108 SoC.
Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Tested-by: Jacob Chen <jacob2.chen@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
(rk3036, rk3399) does now take into account the mode that the PLL is
actually running at.
As always also some additional and optimized PLL rates for rk3066 and
rk3399, some additional clock ids for rk3066 and some additional clocks
on rk3399 are now sucessfully handled inside their respective driver.
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Merge tag 'v4.10-rockchip-clk1' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip into clk-next
Pull Rockchip clk driver updates from Heiko Stuebner:
PLL initialization for PLLs having both an integral and fractional mode
(rk3036, rk3399) does now take into account the mode that the PLL is
actually running at.
As always also some additional and optimized PLL rates for rk3066 and
rk3399, some additional clock ids for rk3066 and some additional clocks
on rk3399 are now sucessfully handled inside their respective driver.
* tag 'v4.10-rockchip-clk1' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip:
clk: rockchip: Ignore frac divisor for PLL equivalence when it's unused
clk: rockchip: remove more CLK_IGNORE_UNUSED for rk3399 clocktree
clk: rockchip: add 400MHz to rk3066 clock rates table
clk: rockchip: optimize 800MHz and 1GHz pll rates on RK3399
clk: rockchip: Use clock ids for cpu and peri clocks on rk3066
clk: rockchip: Add binding ids for cpu and peri clocks on rk3066
clk: rockchip: add 533.25MHz to rk3399 clock rates table
If validity is not checked prior to clock rate change, clk_set_rate(
cpu_clk, unsupported_rate) will return success, but the real clock rate
change operation is prohibited in post clock change event. Alough post
clock change event will report error due to unsupported clock rate is
set, but this error message is ignored by clock framework.
Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com>
Tested-by: Rocky Hao <rocky.hao@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Rockchip RK3399 PLLs can be used in two separate modes: integral and
fractional. We can select between these two modes with the unambiguously
named DSMPD bit.
During boot, we check all PLL settings to confirm that they match our
PLL table for that frequency, and reinitialize the PLLs where they
don't. The settings checked for this include the fractional divider
field that is only used in fractional mode, even if we're in integral
mode (DSMPD = 1) and that field has no effect.
This patch changes the check to only compare the fractional divider if
we're actually in fractional mode. This way, we won't reinitialize the
PLL in cases where there's absolutely no reason for that, which may
avoid glitching child clocks that should better not be glitched (e.g.
PWM regulators).
Signed-off-by: Julius Werner <jwerner@chromium.org>
[cloned the fix to the pretty similar rk3036 pll]
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
We need this to init PLL_CPLL to 400MHz at boot.
Signed-off-by: Paweł Jarosz <paweljarosz3691@gmail.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Usually, the 800MHz and 1GHz are supplied for CPLL and NPLL in the RK3399.
But dues to the carelessly copying from RK3036 when the RK3399 bringing up,
the refdiv == 6, it will increase the lock time, and it is not an optimal
configuration.
Let's fix them for the lock time and jitter are lower:
800 MHz:
- FVCO == 2.4 GHz, revdiv == 1.
1 GHz:
- FVCO == 3 GHz, revdiv == 1.
Signed-off-by: Xing Zheng <zhengxing@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Add bindings for ACLK_CPU, HCLK_CPU, PCLK_CPU, ACLK_PERI, HCLK_PERI, PCLK_PERI.
We need this to init it's rate at boot time.
Signed-off-by: Paweł Jarosz <paweljarosz3691@gmail.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
We need to get the accurate 533.25MHz for the DP display.
Signed-off-by: Xing Zheng <zhengxing@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
rockchip_clk_register_ddrclk should not return NULL when failing
to call clk_register, otherwise rockchip_clk_register_branches
prints "unknown clock type". The actual case is that it's a known
clock type but we fail to register it, which may makes user confuse
the reason of failure. And the pr_err here is pointless as
rockchip_clk_register_branches will also print the similar message.
Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
control. While reading that clock is done the normal way from the
registers, setting it always requires some sort of special handling
to let the system survive this addition.
As the commit message explains, there are currently 3 handling-types
known. General SRAM-based code on rk3288 and before (which is waiting
essentially for the PIE support that is currently being worked on),
SCPI-based clk setting on the rk3368 through a coprocessor, which we
might support once the support for legacy scpi-variants has matured
and now on the rk3399 (and probably later) using a dcf controller that
is controlled from the arm-trusted-firmware and gets accessed through
firmware calls from the kernel. This is the variant we currently
support, but the clock type is made to support the other variants in
the future as well.
Apart from that slightly bigger chunk, we have a mix of PLL rates,
clock-ids and flags mainly for the rk3399.
And interestingly an iomap fix for the legacy gate driver, where I
hopefully could deter the submitter from actually using that in any
new works.
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Merge tag 'v4.9-rockchip-clk1' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip into clk-next
Pull rockchip clk driver updates from Heiko Stuebner:
The biggest addition is probably the special clock-type for ddr clock
control. While reading that clock is done the normal way from the
registers, setting it always requires some sort of special handling
to let the system survive this addition.
As the commit message explains, there are currently 3 handling-types
known. General SRAM-based code on rk3288 and before (which is waiting
essentially for the PIE support that is currently being worked on),
SCPI-based clk setting on the rk3368 through a coprocessor, which we
might support once the support for legacy scpi-variants has matured
and now on the rk3399 (and probably later) using a dcf controller that
is controlled from the arm-trusted-firmware and gets accessed through
firmware calls from the kernel. This is the variant we currently
support, but the clock type is made to support the other variants in
the future as well.
Apart from that slightly bigger chunk, we have a mix of PLL rates,
clock-ids and flags mainly for the rk3399.
And interestingly an iomap fix for the legacy gate driver, where I
hopefully could deter the submitter from actually using that in any
new works.
* tag 'v4.9-rockchip-clk1' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip:
clk: rockchip: use the dclk_vop_frac clock ids on rk3399
clk: rockchip: drop CLK_SET_RATE_PARENT from rk3399 fractional dividers
clk: rockchip: add 2016M to big cpu clk rate table on rk3399
clk: rockchip: add rk3399 ddr clock support
clk: rockchip: add dclk_vop_frac ids for rk3399 vop
clk: rockchip: add new clock-type for the ddrclk
soc: rockchip: add header for ddr rate SIP interface
clk: rockchip: add SCLK_DDRC id for rk3399 ddrc
clk: rockchip: handle of_iomap failures in legacy clock driver
clk: rockchip: mark rk3399 hdcp_noc and vio_noc as critical
clk: rockchip: use general clock flag when registering pll
clk: rockchip: delete the CLK_IGNORE_UNUSED from aclk_pcie on rk3399
clk: rockchip: add 65MHz and 106.5MHz rates to rk3399 plls used for HDMI
