linux-stable.git/drivers/clk, branch v4.8.6

clk: divider: Fix clk_divider_round_rate() to use clk_readl()

2016-10-31T11:02:13+00:00

commit 2cf9a57811bddb6fa6b0f8d7376da164d5534813 upstream.

clk-divider uses clk_readl()/clk_writel() everywhere, except in
clk_divider_round_rate(), where plain readl() is used. Change this to
clk_readl(), as it makes a difference on powerpc.

Fixes: e6d5e7d90be92cee ("clk-divider: Fix READ_ONLY when divider > 1")
Signed-off-by: Geert Uytterhoeven 
Reviewed-by: James Hogan 
Signed-off-by: Stephen Boyd 
Signed-off-by: Greg Kroah-Hartman

clk: core: Force setting the phase delay when no change

2016-10-31T11:02:12+00:00

commit 3174b0c9a62bb3738b4a2a506b8a075d4430e353 upstream.

This patch reverts commit 023bd7166be0 ("clk: skip unnecessary
set_phase if nothing to do"), fixing two problems:

* in some SoCs, the hardware phase delay depends on the rate ratio of
  the clock and its parent. So, changing this ratio may imply to set
  new hardware values, even if the logical delay is the same.

* when the delay was the same as previously, an error was returned.

Signed-off-by: Jean-Francois Moine 
Fixes: 023bd7166be0 ("clk: skip unnecessary set_phase if nothing to do")
Signed-off-by: Stephen Boyd 
Signed-off-by: Greg Kroah-Hartman

clk: Return errors from clk providers in __of_clk_get_from_provider()

2016-10-31T11:02:12+00:00

commit f155d15b64e36b45ca89e3521fe0c1ccad5e5ff0 upstream.

Before commit 0861e5b8cf80 (clk: Add clk_hw OF clk providers,
2016-02-05) __of_clk_get_from_provider() would return an error
pointer of the provider's choosing if there was a provider
registered and EPROBE_DEFER otherwise. After that commit, it
would return EPROBE_DEFER regardless of whether or not the
provider returned an error. This is odd and can lead to behavior
where clk consumers keep probe deferring when they should be
seeing some other error.

Let's restore the previous behavior where we only return
EPROBE_DEFER when there isn't a provider in our of_clk_providers
list. Otherwise, return the error from the last provider we find
that matches the node.

Reported-by: Masahiro Yamada 
Fixes: 0861e5b8cf80 ("clk: Add clk_hw OF clk providers")
Signed-off-by: Stephen Boyd 
Signed-off-by: Greg Kroah-Hartman

clk: qoriq: fix a register offset error

2016-10-31T11:02:12+00:00

commit 8964193f6bfda5c4cf14eedb7e94892c1f1c34f0 upstream.

The offset of Core Cluster clock control/status register
on cluster group V3 version is different from others, and
should be plus 0x70000.

Signed-off-by: Tang Yuantian 
Reviewed-by: Scott Wood 
Fixes: 9e19ca2f627e ("clk: qoriq: Add ls2080a support.")
Signed-off-by: Stephen Boyd 
Signed-off-by: Greg Kroah-Hartman

clk: qcom: select GDSC for msm8996 gcc and mmcc

2016-10-31T11:02:12+00:00

commit 6d91f2c0141330b919ae4d13395f38c341469564 upstream.

This patch selects QCOM_GDSC Kconfig for msm8996 GCC and MMCC clock
controllers, as these provide some of the gdscs on the SOC.

Also selecting this config will make it align with other drivers which
do the same.

Signed-off-by: Srinivas Kandagatla 
Fixes: 52111672f791 ("clk: qcom: gdsc: Add GDSCs in msm8996 GCC")
Fixes: 7e824d507909 ("clk: qcom: gdsc: Add mmcc gdscs for msm8996 family")
Signed-off-by: Stephen Boyd 
Signed-off-by: Greg Kroah-Hartman

clk: gcc-msm8996: Fix pcie 2 pipe register offset

2016-10-31T11:02:12+00:00

commit ce61966c05f276294b6be04d1765ad0d827ddefd upstream.

This patch corrects the register offset for pcie2 pipe clock.
Offset according to datasheet is 0x6e018 instead of 0x6e108.

Signed-off-by: Srinivas Kandagatla 
Fixes: b1e010c0730a ("clk: qcom: Add MSM8996 Global Clock Control (GCC) driver")
Signed-off-by: Stephen Boyd 
Signed-off-by: Greg Kroah-Hartman

clk: bcm2835: Skip PLLC clocks when deciding on a new clock parent

2016-10-31T11:02:12+00:00

commit 67615c588a059b731df9d019edc3c561d8006ec9 upstream.

If the firmware had set up a clock to source from PLLC, go along with
it.  But if we're looking for a new parent, we don't want to switch it
to PLLC because the firmware will force PLLC (and thus the AXI bus
clock) to different frequencies during over-temp/under-voltage,
without notification to Linux.

On my system, this moves the Linux-enabled HDMI state machine and DSI1
escape clock over to plld_per from pllc_per.  EMMC still ends up on
pllc_per, because the firmware had set it up to use that.

Signed-off-by: Eric Anholt 
Fixes: 41691b8862e2 ("clk: bcm2835: Add support for programming the audio domain clocks")
Acked-by: Martin Sperl 
Signed-off-by: Stephen Boyd 
Signed-off-by: Greg Kroah-Hartman

ARM: clk-imx35: fix name for ckil clk

2016-10-31T11:02:08+00:00

commit fcff03813a7c612873303037cef5ba0329850c35 upstream.

This fixes
	[    0.000000] i.MX clk 82: register failed with -17
because the name is duplicated.

Signed-off-by: Uwe Kleine-König 
Fixes: 3713e3f5e927 ("clk: imx35: define two clocks for rtc")
Acked-by: Shawn Guo 
Signed-off-by: Stephen Boyd 
Signed-off-by: Greg Kroah-Hartman

clk: imx6: fix i.MX6DL clock tree to reflect reality

2016-10-28T07:45:18+00:00

commit b1d51b448e4e6a392283b3eab06a7c5ec6d8a4e2 upstream.

The current clock tree only implements the minimal set of differences
between the i.MX6Q and the i.MX6DL, but that doesn't really reflect
reality.

Apply the following fixes to match the RM:
- DL has no GPU3D_SHADER_SEL/PODF, the shader domain is clocked by
  GPU3D_CORE
- GPU3D_SHADER_SEL/PODF has been repurposed as GPU2D_CORE_SEL/PODF
- GPU2D_CORE_SEL/PODF has been repurposed as MLB_SEL/PODF

Signed-off-by: Lucas Stach 
Acked-by: Shawn Guo 
Signed-off-by: Stephen Boyd 
Signed-off-by: Greg Kroah-Hartman

clk: imx6: initialize GPU clocks

2016-10-28T07:45:18+00:00

commit d8846023aed1293e54d33499558fc2aa2b2f393f upstream.

Initialize the GPU clock muxes to sane inputs. Until now they have
not been changed from their default values, which means that both
GPU3D shader and GPU2D core were fed by clock inputs whose rates
exceed the maximium allowed frequency of the cores by as much as
200MHz.

This fixes a severe GPU stability issue on i.MX6DL.

Signed-off-by: Lucas Stach 
Acked-by: Shawn Guo 
Signed-off-by: Stephen Boyd 
Signed-off-by: Greg Kroah-Hartman