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Linus Torvalds 916f562fb2 This round of clk driver and framework updates is heavy on the driver update
side. The two main highlights in the core framework are the addition of an bulk
 clk_get API that handles optional clks and an extra debugfs file that tells the
 developer about the current parent of a clk.
 
 The driver updates are dominated by i.MX in the diffstat, but that is mostly
 because that SoC has started converting to the clk_hw style of clk
 registration. The next big update is in the Amlogic meson clk driver that
 gained some support for audio, cpu, and temperature clks while fixing some PLL
 issues. Finally, the biggest thing that stands out is the conversion of a large
 part of the Allwinner sunxi-ng driver to the new clk parent scheme that uses
 less strings and more pointer comparisons to match clk parents and children up.
 
 In general, it looks like we have a lot of little fixes and tweaks here and
 there to clk data along with the normal addition of a handful of new drivers
 and a couple new core framework features.
 
 Core:
  - Add a 'clk_parent' file in clk debugfs
  - Add a clk_bulk_get_optional() API (with devm too)
 
 New Drivers:
  - Support gated clk controller on MIPS based BCM63XX SoCs
  - Support SiLabs Si5341 and Si5340 chips
  - Support for CPU clks on Raspberry Pi devices
  - Audsys clock driver for MediaTek MT8516 SoCs
 
 Updates:
  - Convert a large portion of the Allwinner sunxi-ng driver to new clk parent scheme
  - Small frequency support for SiLabs Si544 chips
  - Slow clk support for AT91 SAM9X60 SoCs
  - Remove dead code in various clk drivers (-Wunused)
  - Support for Marvell 98DX1135 SoCs
  - Get duty cycle of generic pwm clks
  - Improvement in mmc phase calculation and cleanup of some rate defintions
  - Switch i.MX6 and i.MX7 clock drivers to clk_hw based APIs
  - Add GPIO, SNVS and GIC clocks for i.MX8 drivers
  - Mark imx6sx/ul/ull/sll MMDC_P1_IPG and imx8mm DRAM_APB as critical clock
  - Correct imx7ulp nic1_bus_clk and imx8mm audio_pll2_clk clock setting
  - Add clks for new Exynos5422 Dynamic Memory Controller driver
  - Clock definition for Exynos4412 Mali
  - Add CMM (Color Management Module) clocks on Renesas R-Car H3, M3-N, E3, and D3
  - Add TPU (Timer Pulse Unit / PWM) clocks on Renesas RZ/G2M
  - Support for 32 bit clock IDs in TI's sci-clks for J721e SoCs
  - TI clock probing done from DT by default instead of firmware
  - Fix Amlogic Meson mpll fractional part and spread sprectrum issues
  - Add Amlogic meson8 audio clocks
  - Add Amlogic g12a temperature sensors clocks
  - Add Amlogic g12a and g12b cpu clocks
  - Add TPU (Timer Pulse Unit / PWM) clocks on Renesas R-Car H3, M3-W, and M3-N
  - Add CMM (Color Management Module) clocks on Renesas R-Car M3-W
  - Add Clock Domain support on Renesas RZ/N1
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Merge tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux

Pull clk updates from Stephen Boyd:
 "This round of clk driver and framework updates is heavy on the driver
  update side. The two main highlights in the core framework are the
  addition of an bulk clk_get API that handles optional clks and an
  extra debugfs file that tells the developer about the current parent
  of a clk.

  The driver updates are dominated by i.MX in the diffstat, but that is
  mostly because that SoC has started converting to the clk_hw style of
  clk registration. The next big update is in the Amlogic meson clk
  driver that gained some support for audio, cpu, and temperature clks
  while fixing some PLL issues. Finally, the biggest thing that stands
  out is the conversion of a large part of the Allwinner sunxi-ng driver
  to the new clk parent scheme that uses less strings and more pointer
  comparisons to match clk parents and children up.

  In general, it looks like we have a lot of little fixes and tweaks
  here and there to clk data along with the normal addition of a handful
  of new drivers and a couple new core framework features.

  Core:
   - Add a 'clk_parent' file in clk debugfs
   - Add a clk_bulk_get_optional() API (with devm too)

  New Drivers:
   - Support gated clk controller on MIPS based BCM63XX SoCs
   - Support SiLabs Si5341 and Si5340 chips
   - Support for CPU clks on Raspberry Pi devices
   - Audsys clock driver for MediaTek MT8516 SoCs

  Updates:
   - Convert a large portion of the Allwinner sunxi-ng driver to new clk parent scheme
   - Small frequency support for SiLabs Si544 chips
   - Slow clk support for AT91 SAM9X60 SoCs
   - Remove dead code in various clk drivers (-Wunused)
   - Support for Marvell 98DX1135 SoCs
   - Get duty cycle of generic pwm clks
   - Improvement in mmc phase calculation and cleanup of some rate defintions
   - Switch i.MX6 and i.MX7 clock drivers to clk_hw based APIs
   - Add GPIO, SNVS and GIC clocks for i.MX8 drivers
   - Mark imx6sx/ul/ull/sll MMDC_P1_IPG and imx8mm DRAM_APB as critical clock
   - Correct imx7ulp nic1_bus_clk and imx8mm audio_pll2_clk clock setting
   - Add clks for new Exynos5422 Dynamic Memory Controller driver
   - Clock definition for Exynos4412 Mali
   - Add CMM (Color Management Module) clocks on Renesas R-Car H3, M3-N, E3, and D3
   - Add TPU (Timer Pulse Unit / PWM) clocks on Renesas RZ/G2M
   - Support for 32 bit clock IDs in TI's sci-clks for J721e SoCs
   - TI clock probing done from DT by default instead of firmware
   - Fix Amlogic Meson mpll fractional part and spread sprectrum issues
   - Add Amlogic meson8 audio clocks
   - Add Amlogic g12a temperature sensors clocks
   - Add Amlogic g12a and g12b cpu clocks
   - Add TPU (Timer Pulse Unit / PWM) clocks on Renesas R-Car H3, M3-W, and M3-N
   - Add CMM (Color Management Module) clocks on Renesas R-Car M3-W
   - Add Clock Domain support on Renesas RZ/N1"

* tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: (190 commits)
  clk: consoldiate the __clk_get_hw() declarations
  clk: sprd: Add check for return value of sprd_clk_regmap_init()
  clk: lochnagar: Update DT binding doc to include the primary SPDIF MCLK
  clk: Add Si5341/Si5340 driver
  dt-bindings: clock: Add silabs,si5341
  clk: clk-si544: Implement small frequency change support
  clk: add BCM63XX gated clock controller driver
  devicetree: document the BCM63XX gated clock bindings
  clk: at91: sckc: use dedicated functions to unregister clock
  clk: at91: sckc: improve error path for sama5d4 sck registration
  clk: at91: sckc: remove unnecessary line
  clk: at91: sckc: improve error path for sam9x5 sck register
  clk: at91: sckc: add support to free slow clock osclillator
  clk: at91: sckc: add support to free slow rc oscillator
  clk: at91: sckc: add support to free slow oscillator
  clk: rockchip: export HDMIPHY clock on rk3228
  clk: rockchip: add watchdog pclk on rk3328
  clk: rockchip: add clock id for hdmi_phy special clock on rk3228
  clk: rockchip: add clock id for watchdog pclk on rk3328
  clk: at91: sckc: add support for SAM9X60
  ...
2019-07-17 10:07:48 -07:00
Thomas Gleixner d2912cb15b treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
Based on 2 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license version 2 as
  published by the free software foundation

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license version 2 as
  published by the free software foundation #

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-only

has been chosen to replace the boilerplate/reference in 4122 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Enrico Weigelt <info@metux.net>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-19 17:09:55 +02:00
Abel Vesa 3a1d8fe6f4 clk: imx6sl: Switch to clk_hw based API
Switch the entire clk-imx6sl driver to clk_hw based API.
This allows us to move closer to a clear split between
consumer and provider clk APIs.

Signed-off-by: Abel Vesa <abel.vesa@nxp.com>
Reviewed-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2019-06-07 08:36:39 +08:00
Anson Huang c129b6fe81 clk: imx: Use imx_mmdc_mask_handshake() API for masking MMDC channel
Use imx_mmdc_mask_handshake() API instead of programming CCM
register directly in each platform to mask unused MMDC channel's
handshake.

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Reviewed-by: Dong Aisheng <aisheng.dong@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2019-05-23 21:14:41 +08:00
Anson Huang 0efcc2c0fd clk: imx6sl: ensure MMDC CH0 handshake is bypassed
Same as other i.MX6 SoCs, ensure unused MMDC channel's
handshake is bypassed, this is to make sure no request
signal will be generated when periphe_clk_sel is changed
or SRC warm reset is triggered.

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2018-12-10 11:34:21 -08:00
Anson Huang 09d47620d0 clk: imx6sl: add mmdc ipg clocks
i.MX6SL has MMDC0 and MMDC1 ipg clock in CCM CCGR, add them into
clock tree for clock management.

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2018-10-17 11:15:51 -07:00
Anson Huang 8e12ce9954 clk: imx6sl: remove clks_init_on array
Clock framework will enable those clocks registered
with CLK_IS_CRITICAL flag, so no need to have
clks_init_on array during clock initialization now.

ARM clock is busy divider type which has the
CLK_IS_CRITICAL flag set by default when registered.

IPG clock has no clock gate and its parent AHB clock
is busy divider type, so no need to add CLK_IS_CRITICAL
flag for IPG clock.

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Reviewed-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2018-06-29 11:28:31 -07:00
Anson Huang f82368dd69 clk: imx6sl: correct ocram_podf clock type
IMX6SL_CLK_OCRAM_PODF is a busy divider, its name in
CCM_CDHIPR register of Reference Manual CCM chapter
is axi_podf_busy, correct its clock type.

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Acked-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2018-06-01 12:10:28 -07:00
Arvind Yadav fdda6ee947 clk: imx: constify clk_div_table
clk_div_table are not supposed to change at runtime. All functions
working with clk_div_table provided by <linux/clk-provider.h> work
with const clk_div_table. So mark the non-const structs as const.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Acked-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2017-08-30 22:30:27 -07:00
Dong Aisheng f83d31635c clk: imx: fix pll clock parents
pllx_bypass_src mux shouldn't be the parent of pllx clock
since it's only valid when when pllx BYPASS bit is set.
Thus it is actually one parent of pllx_bypass only.

Instead, pllx parent should be fixed to osc according to
reference manual.
Other plls have the same issue.

e.g. before fix, the pll tree is:
osc                                      6            6    24000000          0 0
   pll1_bypass_src                       0            0    24000000          0 0
      pll1                               0            0   792000000          0 0
         pll1_bypass                     0            0   792000000          0 0
            pll1_sys                     0            0   792000000          0 0

After the fix, it's:
osc                                      6            6    24000000          0 0
   pll1                                  0            0   792000000          0 0
      pll1_bypass                        0            0   792000000          0 0
         pll1_sys                        0            0   792000000          0 0

Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2016-06-12 21:21:41 +08:00
Shengjiu Wang 84a87250ee clk: imx6: Add SPDIF_GCLK clock in clock tree
Correct SPDIF clock setting issue in clock tree, the SPDIF_GCLK is also
one clock of SPDIF, which is missed before.

We found an issue that imx can't enter low power mode with spdif
if IMX6x_CLK_SPDIF is used as the core clock of spdif. Because
spdif driver will register IMX6x_CLK_SPDIF clock to regmap, regmap will do
clk_prepare in init function, then IMX6x_CLK_SPDIF clock is prepared in probe,
so its parent clock (PLL clock) is prepared, the prepare operation of
PLL clock is to enable the clock. But I.MX needs all PLL clock is disabled,
then it can enter low power mode.

So we can't use IMX6x_CLK_SPDIF as the core clock of spdif, the correct spdif
core clock is SPDIF_GCLK, which share same gate bit with IMX6x_CLK_SPDIF clock.
SPDIF_GCLK's parent clock is ipg clock.

Signed-off-by: Shengjiu Wang <shengjiu.wang@freescale.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2015-10-12 21:55:59 +08:00
Lucas Stach 0822f93373 clk: imx6: retain early UART clocks during kernel init
Make sure to keep UART clocks enabled during kernel init if
earlyprintk or earlycon are active.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2015-09-25 21:59:02 -07:00
Shawn Guo 11f6812009 ARM: imx: move clock drivers into drivers/clk
After the cleanup on clock drivers, they are now ready to be moved into
drivers/clk.  Let's move them into drivers/clk/imx folder.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Stephen Boyd <sboyd@codeaurora.org>
2015-06-03 14:44:33 +08:00