linux.git/drivers/clk/imx, branch v4.9

clk: imx: fix integer overflow in AV PLL round rate

2016-11-02T00:07:54+00:00

Since 'parent_rate * mfn' may overflow 32 bits, the result should be
stored using 64 bits.

The problem was discovered when trying to set the rate of the audio PLL
(pll4_post_div) on an i.MX6Q. The desired rate was 196.608 MHz, but
the actual rate returned was 192.000570 MHz. The round rate function should
have been able to return 196.608 MHz, i.e., the desired rate.

Fixes: ba7f4f557eb6 ("clk: imx: correct AV PLL rate formula")
Cc: Anson Huang 
Signed-off-by: Emil Lundmark 
Reviewed-by: Fabio Estevam 
Acked-by: Shawn Guo 
Signed-off-by: Stephen Boyd

Merge tag 'armsoc-cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

2016-10-08T04:16:16+00:00

Pull ARM SoC cleanups from Arnd Bergmann:
 "The cleanups for v4.9 are a little larger that usual, but thankfully
  that is almost exclusively due to removing a significant number of
  files that have become obsolete after the still ongoing conversion of
  old board files to devicetree.

   - for mach-omap2, which is still the largest platform in arch/arm/,
     the conversion to DT is finally complete after the Nokia N900 is
     now fully supported there, along with the omap3 LDP, and we can
     remove those two board files. If no regressions are found, another
     large cleanup for the platform will happen as a follow-up, removing
     dead code and restructuring the platform based on being DT-only.

   - In mach-imx, similar work is ongoing, but has not come that far.
     This time, we remove the obsolete board file for the i.MX1
     generation, which like i.MX25, i.MX5, i.MX6, and i.MX7 is now
     DT-only. The remaining board files are for i.MX2 and i.MX3 machines
     based on old ARM926 or ARM1136 cores that should work with DT in
     principle.

   - realview has just been converted from board files to DT, and a lot
     of code gets removed in the process. This is the last
     ARM/Keil/Versatile derived platform that was still using board
     files, the other ones being integrator, versatile and vexpress. We
     can probably merge the remaining code into a single directory in
     the near future.

   - clps711x had completed the conversion in v4.8, but we accidentally
     left the files in place that should have been deleted then"

* tag 'armsoc-cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (21 commits)
  ARM: select PCI_DOMAINS config from ARCH_MULTIPLATFORM
  ARM: stop *MIGHT_HAVE_PCI* config from being selected redundantly
  ARM: imx: (trivial) fix typo and grammar
  ARM: clps711x: remove extraneous files
  ARM: imx: use IS_ENABLED() instead of checking for built-in or module
  ARM: OMAP2+: use IS_ENABLED() instead of checking for built-in or module
  ARM: OMAP1: use IS_ENABLED() instead of checking for built-in or module
  ARM: imx: remove platform-mxc_rnga
  ARM: realview: imply device tree boot
  ARM: realview: no need to select SMP_ON_UP explicitly
  ARM: realview: delete the RealView board files
  ARM: imx: no need to select SMP_ON_UP explicitly
  ARM: i.MX: Move SOC_IMX1 into 'Device tree only'
  ARM: i.MX: Remove i.MX1 non-DT support
  ARM: i.MX: Remove i.MX1 Synertronixx SCB9328 board support
  ARM: i.MX: Remove i.MX1 Armadeus APF9328 board support
  ARM: mxs: remove obsolete startup code for TX28
  ARM: i.MX31 iomux: remove duplicates with alternate name
  ARM: i.MX31 iomux: remove plain duplicates
  ARM: OMAP2+: Drop legacy board file for LDP
  ...

clk: imx6: initialize GPU clocks

2016-09-20T23:57:15+00:00

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.

Cc: stable@vger.kernel.org
Signed-off-by: Lucas Stach 
Acked-by: Shawn Guo 
Signed-off-by: Stephen Boyd

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

2016-09-20T23:52:37+00:00

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

Cc: stable@vger.kernel.org
Signed-off-by: Lucas Stach 
Acked-by: Shawn Guo 
Signed-off-by: Stephen Boyd

clk: imx53: Add clocks configuration

2016-09-20T23:52:06+00:00

Add clocks configuration for CSI, FIRI and IEEE1588.

Signed-off-by: Fabien Lahoudere 
Acked-by: Shawn Guo 
Signed-off-by: Stephen Boyd

ARM: clk-imx35: annotate clk enum with number values

2016-09-14T18:28:04+00:00

This helps to decode error messages like:

	[    0.000000] i.MX clk 82: register failed with -17

Signed-off-by: Uwe Kleine-König 
Acked-by: Shawn Guo 
Signed-off-by: Stephen Boyd

ARM: clk-imx35: fix name for ckil clk

2016-09-14T18:27:49+00:00

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

clk: imx7d: Add PLL_AUDIO_TEST_DIV/POST_DIV clocks

2016-08-30T21:58:15+00:00

Currently we see the following error when using the SAI audio
driver on mx7:

Division by zero in kernel.
CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.8.0-rc3-next-20160823
Hardware name: Freescale i.MX7 Dual (Device Tree)
Backtrace:
[] (dump_backtrace) from [] (show_stack+0x18)
r6:60000013 r5:ffffffff r4:00000000 r3:00000000
[] (show_stack) from [] (dump_stack+0xb0/0xe)
[] (dump_stack) from [] (__div0+0x18/0x20)
r8:00000000 r7:ffffffff r6:ffffffff r5:00000000 r4:00000000 r3:0
[] (__div0) from [] (Ldiv0_64+0x8/0x18)
[] (divider_get_val) from [] (clk_divider_se)

This error happens due to the lack of definition of the
IMX7D_PLL_AUDIO_TEST_DIV/IMX7D_PLL_AUDIO_POST_DIV clocks.

Add support for them.

Tested on a imx7s-warp board.

Signed-off-by: Fabio Estevam 
Signed-off-by: Stephen Boyd

clk: imx7d: Add SAI IPG clocks

2016-08-19T19:53:43+00:00

The SAI_IPG clocks are enabled by the same bits that control SAI_ROOT_CLK
clocks, so represent them as shared clocks.

Signed-off-by: Fabio Estevam 
Signed-off-by: Stephen Boyd

clk: imx: Introduce clk_register_gate2()

2016-08-19T19:53:41+00:00

Introduce imx_clk_gate2_shared2() which is similar to the existing
imx_clk_gate2_shared() and passes CLK_OPS_PARENT_ENABLE flag, which
is useful for i.MX7 shared clocks.

Signed-off-by: Fabio Estevam 
Signed-off-by: Stephen Boyd