Commit Graph

141 Commits

Author SHA1 Message Date
Shawn Lin
fc6d875ecb clk: rockchip: fix coding style for clk-cpu.c
Fix the issue reported by checkpatch:
ERROR: space prohibited before that ',' (ctx:WxW)
+               writel(clksel->val , cpuclk->reg_base + clksel->reg);

Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2016-02-15 23:38:35 +01:00
Shawn Lin
022dce0bd0 clk: rockchip: don't return NULL when registering mmc branch fails
Avoid return NULL if rockchip_clk_register_mmc fails, otherwise
rockchip_clk_register_branches print "unknown clock type". The acutal
case is that it's a known clock type but we fail to regiser it, which
may makes user confuse the reason of failure.

Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2016-02-15 23:37:27 +01:00
Shawn Lin
ddd02e1456 clk: rockchip: don't return NULL when registering inverter fails
Avoid return NULL if rockchip_clk_register_inverter fails, otherwise
rockchip_clk_register_branches print "unknown clock type". The acutal
case is that it's a known clock type but we fail to regiser it, which
may makes user confuse the reason of failure.

Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2016-02-15 23:35:20 +01:00
Shawn Lin
eb4e10c61d clk: rockchip: check grf when waiting pll lock
rockchip_clk_get_grf pass on return value from
syscon_regmap_lookup_by_phandle, so we check grf to
make sure whether to do the following things or not.

Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2016-02-15 22:38:27 +01:00
Shawn Lin
282312d1ac clk: rockchip: disable alt_parent clk in err cases when registering cpuclk
Add clk_disable_unprepare to handle cpuclk->alt_parent if
rockchip_clk_register_cpuclk fails.

Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2016-02-15 22:32:00 +01:00
Heiko Stuebner
36714529f8 clk: rockchip: convert manually created factor clocks to the new type
Clean up the init code and move the creation of factor clocks to the
appropriate positions coming from the clock architecture diagrams.

This also unifies the artificial separation of the hclk_vcodec etc clocks
again.

We do keep the separate definition of some watchdog and usb480m pseudo
clocks for now, as they're not real factor clocks from the clock-tree
but placeholders for fixes to come (usb480m gets supplied by the
missing driver for the new usbphy type and the watchdog-gate is sitting
somewhere else together which we cannot model currently).

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2016-02-04 15:54:20 +01:00
Heiko Stuebner
29a30c269a clk: rockchip: add a factor clock type
Add a clock type for fixed factor clocks. This allows us to define fixed
factor clocks where they appear in the clock hierarchy instead of in the
init function.

The additional factor_gate type, finally allows us to model some last
parts of the clock tree correctly.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2016-02-04 15:49:09 +01:00
Heiko Stuebner
aebe3ad801 clk: rockchip: fix parent of hclk_vcodec on rk3036
hclk_vcodec is a child of aclk_vcodec with the fixed factor clock
hclk_vcodec_pre in between and not a child of hclk_disp_pre.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2016-02-04 13:53:15 +01:00
Shawn Lin
2467b6745e clk: rockchip: free memory in error cases when registering clock branches
Add free memeory if rockchip_clk_register_branch fails.

Fixes: a245fecbb8 ("clk: rockchip: add basic infrastructure...")
Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2016-02-02 22:09:50 +01:00
Alexander Kochetkov
89aa027e60 clk: rockchip: Allow sclk_i2s0 and i2s0_frac to change their parents rate on rk3188
Allow sclk_i2s0 and i2s0_frac to change their parents rate as
that the upstream dividers are purely there to feed sclk_i2s0

Tested on radxarock-lite.

Signed-off-by: Alexander Kochetkov <al.kochet@gmail.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2016-01-29 10:18:49 +01:00
Shawn Lin
bb07698fc8 clk: rockchip: fix wrong mmc phase shift for rk3228
mmc sample shift is 0 for rk3228 refer to user manaul.
So it's broken if we enable mmc tuning for rk3228.

Fixes: 307a2e9ac ("clk: rockchip: add clock controller for rk3228")
Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Reviewed-by: Xing Zheng <zhengxing@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2016-01-28 18:02:26 +01:00
Alexander Kochetkov
e8b63288b3 clk: rockchip: add hclk_cpubus to the list of rk3188 critical clocks
hclk_cpubus needs to keep running because it is needed for devices like
the rom, i2s0 or spdif to be accessible via cpu. Without that all
accesses to devices (readl/writel) return wrong data. So add it
to the list of critical clocks.

Fixes: 78eaf6095c ("clk: rockchip: disable unused clocks")
Signed-off-by: Alexander Kochetkov <al.kochet@gmail.com>
Cc: stable@vger.kernel.org # 4.1.x-
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2016-01-26 21:09:51 +01:00
Paweł Jarosz
2c41b5a775 clk: rockchip: add tsadc clock on rk3066
Set clock id for sclk_tsadc gating clock of tsadc in rk3066

Signed-off-by: Paweł Jarosz <paweljarosz3691@gmail.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2016-01-26 01:08:02 +01:00
Heiko Stuebner
219a5859c8 clk: rockchip: fix usbphy-related clocks
The otgphy clocks really only drive the phy blocks. These in turn
contain plls that then generate the 480m clocks the clock controller
uses to supply some other clocks like uart0, gpu or the video-codec.

So fix this structure to actually respect that hirarchy and removed
that usb480m fixed-rate clock working as a placeholder till now, as
this wouldn't even work if the supplying phy gets turned off while
its pll-output gets used elsewhere.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Acked-by: Michael Turquette <mturquette@baylibre.com>
2016-01-25 15:00:03 +01:00
zhangqing
e8099067de clk: rockchip: rk3368: enable the CLK_SET_RATE_PARENT flag for i2s_2ch
I2S_2CH set freq need to select parent and calculate parent freq.
so just mark it as the CLK_SET_RATE_PARENT flag.

Signed-off-by: zhangqing <zhangqing@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2016-01-25 11:06:54 +01:00
zhangqing
0bbe62eb92 clk: rockchip: rk3368: enable the CLK_SET_RATE_PARENT flag for spdif_8ch
SPDIF_8CH set freq need to select parent and calculate parent freq.
so just mark it as the CLK_SET_RATE_PARENT flag.

Signed-off-by: zhangqing <zhangqing@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2016-01-25 11:04:51 +01:00
zhangqing
d566ebc3c0 clk: rockchip: rk3368: fix edp_24m parent
The edp_24m parent select bit define is:
1'b0:xin24m
1'b1:1'b0(dummy)
so adapt the parent sel bit to the currect one.

Signed-off-by: zhangqing <zhangqing@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2016-01-25 11:03:45 +01:00
Heiko Stuebner
fd0c0740fa clk: rockchip: rk3368: fix hdmi_cec gate-register
Fix a typo making the sclk_hdmi_cec access a wrong register to handle
its gate.

Fixes: 3536c97a52 ("clk: rockchip: add rk3368 clock controller")
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: zhangqing <zhangqing@rock-chips.com>
Cc: stable@vger.kernel.org
2016-01-24 23:29:16 +01:00
Heiko Stuebner
0f28d98463 clk: rockchip: rk3368: fix parents of video encoder/decoder
The vdpu and vepu clocks can also be parented to the npll and current
parent list also is wrong as it would use the npll as "usbphy" source,
so adapt the parent to the correct one.

Fixes: 3536c97a52 ("clk: rockchip: add rk3368 clock controller")
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: zhangqing <zhangqing@rock-chips.com>
Cc: stable@vger.kernel.org
2016-01-24 23:29:16 +01:00
Heiko Stuebner
c6d5fe2ca8 clk: rockchip: rk3368: fix cpuclk core dividers
Similar to commit 9880d4277f ("clk: rockchip: fix rk3288 cpuclk core
dividers") it seems the cpuclk dividers are one to high on the rk3368
as well.

And again similar to the previous fix, we opt to make the divider list
contain the values to be written to use the same paradigm for them on all
supported socs.

Fixes: 3536c97a52 ("clk: rockchip: add rk3368 clock controller")
Reported-by: Zhang Qing <zhangqing@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: zhangqing <zhangqing@rock-chips.com>
Cc: stable@vger.kernel.org
2016-01-24 23:29:16 +01:00
Heiko Stuebner
535ebd428a clk: rockchip: rk3368: fix cpuclk mux bit of big cpu-cluster
Both clusters have their mux bit in bit 7 of their respective register.
For whatever reason the big cluster currently lists bit 15 which is
definitly wrong.

Fixes: 3536c97a52 ("clk: rockchip: add rk3368 clock controller")
Reported-by: Zhang Qing <zhangqing@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: zhangqing <zhangqing@rock-chips.com>
Cc: stable@vger.kernel.org
2016-01-24 23:29:16 +01:00
Yakir Yang
ee16bbd289 clk: rockchip: rk3036: enable the CLK_IGNORE_UNUSED flag for hclk_vio_bus
HCLK_VIO_BUS is the noc bus controller clock for display module,
due to it shouldn't belong to any driver, but we need it enabled,
so just mark it as the CLK_IGNORE_UNUSED flag.

Signed-off-by: Yakir Yang <ykk@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2016-01-24 23:29:16 +01:00
Michael Turquette
49dea76aeb Merge branch 'clk-rockchip' into clk-next 2016-01-02 13:41:09 -08:00
Heiko Stübner
5b73840375 clk: rockchip: fix section mismatches with new child-clocks
To model the muxes downstream of fractional dividers we introduced the
child property, allowing to describe a direct child clock.
The first implementation seems to cause section warnings, as the core
clock-tree is marked as initdata while the data pointed to from the
child element is not.

While there may be some way to also set that missing property in the
inline notation I didn't find it, so to actually fix the issue for now
move the sub-definitions into separate declarations that can have
their own __initdata properties.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
2016-01-02 13:40:29 -08:00
Michael Turquette
a915e30dd2 Merge branch 'clk-rockchip' into clk-next 2015-12-23 13:08:56 -08:00
Xing Zheng
b0158bb27c clk: rockchip: rk3036: include downstream muxes into fractional dividers
Use the newly introduced possibility to combine the fractional dividers
with their downstream muxes for all fractional dividers on currently
supported RK3036 SoCs.

Signed-off-by: Xing Zheng <zhengxing@rock-chips.com>
Signed-off-by: Caesar Wang <wxt@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
2015-12-23 12:57:31 -08:00
Sjoerd Simons
84a8c54166 clk: rockchip: Allow the RK3288 SPDIF clocks to change their parent
The clock branches leading to sclk_spdif and sclk_spdif_8ch on RK3288
SoCs only feed those clocks, allow those clocks to change their parents
all the way up the hierarchy.

Signed-off-by: Sjoerd Simons <sjoerd.simons@collabora.co.uk>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
2015-12-23 12:57:30 -08:00
Heiko Stuebner
6674642089 clk: rockchip: include downstream muxes into fractional dividers
Use the newly introduced possibility to combine the fractional dividers
with their downstream muxes for all fractional dividers on currently
supported Rockchip SoCs.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Tested-by: Sjoerd Simons <sjoerd.simons@collabora.co.uk>
Reviewed-by: Sjoerd Simons <sjoerd.simons@collabora.co.uk>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
2015-12-23 12:57:30 -08:00
Heiko Stuebner
8ca1ca8f60 clk: rockchip: handle mux dependency of fractional dividers
The fractional dividers of Rockchip SoCs contain an "auto-gating-feature"
that requires the downstream mux to actually point to the fractional
divider and the fractional divider gate to be enabled, for it to really
accept changes to the divider ratio.

The downstream muxes themselfs are not generic enough to include them
directly into the fractional divider, as they have varying sources of
parent clocks including not only clocks related to the fractional
dividers but other clocks as well.

To solve this, allow our clock branches to specify direct child clock-
branches in the new child property, let the fractional divider register
its downstream mux through this and add a clock notifier that temporarily
switches the mux setting when it notices rate changes to the fractional
divider.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Tested-by: Sjoerd Simons <sjoerd.simons@collabora.co.uk>
Reviewed-by: Sjoerd Simons <sjoerd.simons@collabora.co.uk>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
2015-12-23 12:57:29 -08:00
Heiko Stuebner
dfff24bde7 clk: rockchip: only enter pll slow-mode directly before reboots on rk3288
As commit 1d33929e2a ("clk: rockchip: switch PLLs to slow mode before
reboot for rk3288") states, switching the PLLs to slow-mode is only
necessary when rebooting using the soft-reset done through the CRU.

The dwc2 controllers used create really big number of interrupts in
special constellations involving usb-hubs and their number is so high,
it can even overwhelm the interrupt handler if the cpu-speed os to low.

Right now the PLLs are put into slow-mode in a shutdown syscore_ops
callback which means it happens on all reboots (not only the soft-reset
ones) and even on poweroff actions.

This can result in the system not powering off and getting stuck instead,
so we should move the slow-mode change nearer to the actual reboot action.

For this we introduce the possiblity to also set a callback that gets
called from the restart-handler directly prior to restarting the system
and move the shutdown-callback to this new option.

With this the slow-mode switch is done only on the necessary reboots
and also has a smaller possibility of causing artifacts.

Fixes: 1d33929e2a ("clk: rockchip: switch PLLs to slow mode before reboot for rk3288")
Signed-off-by: Heiko Stuebner <heiko.stuebner@collabora.com>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
2015-12-21 02:01:19 +01:00
Yakir Yang
2abc02fc49 clk: rockchip: rk3036: enable the CLK_IGNORE_UNUSED flag for aclk_vio
ACLK_VIO is the noc bus clock for display module, display cann't
read data from ddr without this clock enabled.

Due to it shouldn't belong to any driver, but we need it enabled,
so just mark it as the CLK_IGNORE_UNUSED flag.

Signed-off-by: Yakir Yang <ykk@rock-chips.com>
Signed-off-by: Caesar Wang <wxt@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2015-12-16 22:24:13 +01:00
ZhengShunQian
60ecbd9d94 clk: rockchip: use rk3288-efuse clock ids
Reference the newly added efuse clock-ids in the clock-tree.

Signed-off-by: ZhengShunQian <zhengsq@rock-chips.com>
Acked-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2015-12-12 20:10:48 +01:00
Jeffy Chen
307a2e9ac5 clk: rockchip: add clock controller for rk3228
Add the clock tree definition for the new rk3228 SoC.

Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2015-12-12 20:04:54 +01:00
Jeffy Chen
ea03835fb8 clk: rockchip: allow more than 2 parents for cpuclk
RK3228's armclk has 3 parents, so allow cpuclk to have
more than 2 parents.

Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2015-12-09 22:30:42 +01:00
Heiko Stuebner
8ad0df33c6 clk: rockchip: fix rk3368 cpuclk divider offsets
Due to a copy-paste error the the rk3368 cpuclk settings were acessing
rk3288-specific register offsets. This never caused problems till now,
as cpu frequency scaling in't used currently at all.

Reported-by: Xing Zheng <zhengxing@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2015-12-03 16:20:02 +01:00
Jianqun xu
941c4d3f11 clk: rockchip: protect rk3368 aclk_bus and aclk_peri clocks
Add aclk_bus and aclk_peri to the list of rk3368 critical clocks,
which are the base clocks that supply for all peripherals, never
to be disabled automatically.

Signed-off-by: Jianqun xu <jay.xu@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2015-12-02 23:11:44 +01:00
Caesar Wang
a7ce405088 clk: rockchip: Force rk3368 PWM clock (and its parents) on
Most rk3368 boards (especially those with Pmic that followed the lead
from rk3368-evb-act8846) have a PWM regulator on them for vdd_logic.
This is the main voltage for all kinds of misc stuff including the
memory controller.

On these boards it is critically important to make sure that the PWM
never ever glitches and never loses its clock. Any glitch could
crash the system.

Right now there are no users of the PWM regulator and also Linux
thinks that the PWM regulator is disabled.  Things happen to work
because firmware configured the PWM and Linux doesn't touch it.
..and the PWM's clock is marked as "ignore unused".

...but things _stop_ working if we turn off serial console.  Why?
Because:
    1. Serial console shares a parent clock with the PWM (pclk_cpu)
    2. If we have no serial console then nobody is holding pclk_cpu on
       at reboot time.  It gets disabled.

We need to fix a lot of the above problems, but until we get
everything right the cleanest "hack" seems like it is to just keep
the "rk_pwm" clock on always.

Signed-off-by: Caesar Wang <wxt@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2015-12-02 00:40:17 +01:00
Chris Zhong
1d33929e2a clk: rockchip: switch PLLs to slow mode before reboot for rk3288
We've been seeing some crashes at reboot test on rk3288-based systems,
which boards have not reset pin connected to NPOR, they reboot by
setting 0xfdb9 to RK3288_GLB_SRST_FST register. If the APLL works in
a high frequency mode, some IPs might hang during soft reset.
It appears that we can fix the problem by switching to slow mode before
reboot, just like what we did before suspend.

Signed-off-by: Chris Zhong <zyw@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2015-12-01 18:33:43 +01:00
Chris Zhong
a2f4c560f1 clk: rockchip: add mipidsi clock on rk3288
sclk_mipidsi_24m is the gating of mipi dsi phy.

Signed-off-by: Chris Zhong <zyw@rock-chips.com>
Acked-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2015-11-26 11:15:23 +01:00
Xing Zheng
5190c08b29 clk: rockchip: add clock controller for rk3036
Add the clock tree definition for the new rk3036 SoC.

Signed-off-by: Xing Zheng <zhengxing@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2015-11-23 21:59:19 +01:00
Xing Zheng
9c4d6e5537 clk: rockchip: add new pll-type for rk3036 and similar socs
The rk3036's pll and clock are different with base on the rk3066(rk3188,
rk3288, rk3368 use it), there are different adjust foctors and control
registers, so these should be independent and separate from the series
of rk3066s.

Signed-off-by: Xing Zheng <zhengxing@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2015-11-23 21:55:07 +01:00
Zain Wang
751be8f2ee clk: rockchip: set the id for crypto clk
Set the newly added id for the crypto clk, so that it can be called
in other parts.

Signed-off-by: Zain Wang <zain.wang@rock-chips.com>
Acked-by: Michael Turquette <mturquette@baylibre.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2015-11-23 21:24:27 +01:00
Linus Torvalds
f66477a0ae The majority of the changes are driver updates and new device
support. The core framework is mostly unchanged this time
 around, with only a couple patches to expose a clk provider
 API and make getting clk parent names from DT more robust.
 
 Driver updates:
 
 - Support for clock controllers found on Broadcom Northstar
   SoCs and bcm2835 SoC
 
 - Support for Allwinner audio clocks
 
 - A few cleanup patches for Tegra drivers and support for the
   highest DFLL frequencies on Tegra124
 
 - Samsung exynos7 fixes and improvements
 
 - i.Mx SoC updates to add a few missing clocks and keep debug
   uart clocks on during kernel intialization
 
 - Some mediatek cleanups and support for more subsystem clocks
 
 - Support for msm8916 gpu/audio clocks and qcom's GDSC power domain
   controllers
 
 - A new driver for the Silabs si514 clock chip
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Merge tag 'clk-for-linus-20151104' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux

Pull clk updates from Stephen Boyd:
 "The majority of the changes are driver updates and new device support.
  The core framework is mostly unchanged this time around, with only a
  couple patches to expose a clk provider API and make getting clk
  parent names from DT more robust.

  Driver updates:

   - Support for clock controllers found on Broadcom Northstar SoCs and
     bcm2835 SoC

   - Support for Allwinner audio clocks

   - A few cleanup patches for Tegra drivers and support for the highest
     DFLL frequencies on Tegra124

   - Samsung exynos7 fixes and improvements

   - i.Mx SoC updates to add a few missing clocks and keep debug uart
     clocks on during kernel intialization

   - Some mediatek cleanups and support for more subsystem clocks

   - Support for msm8916 gpu/audio clocks and qcom's GDSC power domain
     controllers

   - A new driver for the Silabs si514 clock chip"

* tag 'clk-for-linus-20151104' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: (143 commits)
  clk: qcom: msm8960: Fix dsi1/2 halt bits
  clk: lpc18xx-cgu: fix potential system hang when disabling unused clocks
  clk: lpc18xx-ccu: fix potential system hang when disabling unused clocks
  clk: Add clk_hw_is_enabled() for use by clk providers
  clk: Add stubs for of_clk_*() APIs when CONFIG_OF=n
  clk: versatile-icst: fix memory leak
  clk: Remove clk_{register,unregister}_multiplier()
  clk: iproc: define Broadcom NS2 iProc clock binding
  clk: iproc: define Broadcom NSP iProc clock binding
  clk: ns2: add clock support for Broadcom Northstar 2 SoC
  clk: iproc: Separate status and control variables
  clk: iproc: Split off dig_filter
  clk: iproc: Add PLL base write function
  clk: nsp: add clock support for Broadcom Northstar Plus SoC
  clk: iproc: Add PWRCTRL support
  clk: cygnus: Convert all macros to all caps
  ARM: cygnus: fix link failures when CONFIG_COMMON_CLK_IPROC is disabled
  clk: imx31: add missing of_node_put
  clk: imx27: add missing of_node_put
  clk: si5351: add missing of_node_put
  ...
2015-11-05 12:59:36 -08:00
Douglas Anderson
4351f19a33 clk: rockchip: Make calculations use rounding
Let's use DIV_ROUND_CLOSEST for rounding, not just truncating
division.  This lets us get closer to the right rate.

Before this:
  set_phase(86) delay_nums=26 reg[0xf000420c]=0x468 actual_degrees=83
  set_phase(89) delay_nums=27 reg[0xf000420c]=0x46c actual_degrees=86

After this:
  set_phase(86) delay_nums=27 reg[0xf000420c]=0x46c actual_degrees=86
  set_phase(89) delay_nums=28 reg[0xf000420c]=0x470 actual_degrees=90

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Acked-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2015-10-26 16:00:07 +01:00
Douglas Anderson
f0232063fb clk: rockchip: Allow more precision for some mmc clock phases
Because of the inexact nature of the extra MMC delay elements (it's
not possible to keep the phase monotonic and to also make phases (mod
90) > 70), we previously only allowed phases (mod 90) of 22.5, 45,
and 67.5.

But it's not the end of the world if the MMC clock phase goes
non-monotonic.  At most we'll be 25 degrees off.  It's way better to
test more phases to look for bad ones than to be 25 degrees off, because
in the case of MMC really the point is to find bad phases and get as far
asway from the as possible.  If we get to test extra phases by going
slightly non-monotonic then that might be fine.  Worst case we would
end up at a phases that's slight differnt than the one we wanted, but
at least we'd still be quite far away from the a bad phase.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Fold in more precise variance-values of 44-77 instead of 40-80.
Fold in the actual removal of the monotonic requirement and adapt
patch message accordingly.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Acked-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2015-10-26 16:00:06 +01:00
Andy Shevchenko
5d49a6e103 clk: rockchip: save width in struct clk_fractional_divider
The ->mwidth and ->nwidth fields will be used by clk-fractional-divider when it
will be switched to rational base approximation algorithm.

Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2015-10-02 11:29:47 -07:00
Shawn Lin
7a03fe6f48 clk: rockchip: reset init state before mmc card initialization
mmc host controller's IO input/output timing is unpredictable if
bootloader execute tuning for HS200 mode. It might make kernel failed
to initialize mmc card in identification mode. The root cause is
tuning phase and degree setting for HS200 mode in bootloader aren't
applicable to that of identification mode in kernel stage. Anyway, we
can't force all bootloaders to reset tuning phase and degree setting
before into kernel. Simply reset it in rockchip_clk_register_mmc.

Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2015-10-01 16:36:54 -07:00
Heiko Stübner
8334c0e7b9 clk: rockchip: don't use clk_ APIs in the pll init-callback
Separate the update of pll registers from the actual set_rate function
so that the init callback does not need to access clk-API functions.

As we now have separated the getting and setting of the pll parameters
we can also directly use these new functions in other places too.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2015-10-01 14:58:28 -07:00
Linus Torvalds
d590b2d4bf A few driver fixes for tegra, rockchip, and st SoCs and a two-liner
in the framework to avoid oops when get_parent ops return out of range
 values on tegra platforms.
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Merge tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux

Pull clk fixes from Stephen Boyd:
 "A few driver fixes for tegra, rockchip, and st SoCs and a two-liner in
  the framework to avoid oops when get_parent ops return out of range
  values on tegra platforms"

* tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
  drivers: clk: st: Rename st_pll3200c32_407_c0_x into st_pll3200c32_cx_x
  clk: check for invalid parent index of orphans in __clk_init()
  clk: tegra: dfll: Properly protect OPP list
  clk: rockchip: add critical clock for rk3368
2015-09-19 20:17:40 -07:00
Stephen Boyd
db544f1b58 Merge branch 'clk-next' into v4.3-rc1 2015-09-16 15:20:03 -07:00