linux-toradex.git/drivers/clk, branch v4.19-rc8

clk: x86: Stop marking clocks as CLK_IS_CRITICAL

2018-09-18T01:47:58+00:00

Commit d31fd43c0f9a ("clk: x86: Do not gate clocks enabled by the
firmware"), which added the code to mark clocks as CLK_IS_CRITICAL, causes
all unclaimed PMC clocks on Cherry Trail devices to be on all the time,
resulting on the device not being able to reach S0i3 when suspended.

The reason for this commit is that on some Bay Trail / Cherry Trail devices
the r8169 ethernet controller uses pmc_plt_clk_4. Now that the clk-pmc-atom
driver exports an "ether_clk" alias for pmc_plt_clk_4 and the r8169 driver
has been modified to get and enable this clock (if present) the marking of
the clocks as CLK_IS_CRITICAL is no longer necessary.

This commit removes the CLK_IS_CRITICAL marking, fixing Cherry Trail
devices not being able to reach S0i3 greatly decreasing their battery
drain when suspended.

Buglink: https://bugzilla.kernel.org/show_bug.cgi?id=193891#c102
Buglink: https://bugzilla.kernel.org/show_bug.cgi?id=196861
Cc: Johannes Stezenbach 
Cc: Carlo Caione 
Reported-by: Johannes Stezenbach 
Reviewed-by: Andy Shevchenko 
Acked-by: Stephen Boyd 
Signed-off-by: Hans de Goede 
Signed-off-by: David S. Miller

clk: x86: add "ether_clk" alias for Bay Trail / Cherry Trail

2018-09-18T01:47:58+00:00

Commit d31fd43c0f9a ("clk: x86: Do not gate clocks enabled by the
firmware") causes all unclaimed PMC clocks on Cherry Trail devices to be on
all the time, resulting on the device not being able to reach S0i2 or S0i3
when suspended.

The reason for this commit is that on some Bay Trail / Cherry Trail devices
the ethernet controller uses pmc_plt_clk_4. This commit adds an "ether_clk"
alias, so that the relevant ethernet drivers can try to (optionally) use
this, without needing X86 specific code / hacks, thus fixing ethernet on
these devices without breaking S0i3 support.

This commit uses clkdev_hw_create() to create the alias, mirroring the code
for the already existing "mclk" alias for pmc_plt_clk_3.

Buglink: https://bugzilla.kernel.org/show_bug.cgi?id=193891#c102
Buglink: https://bugzilla.kernel.org/show_bug.cgi?id=196861
Cc: Johannes Stezenbach 
Cc: Carlo Caione 
Reported-by: Johannes Stezenbach 
Acked-by: Stephen Boyd 
Reviewed-by: Andy Shevchenko 
Signed-off-by: Hans de Goede 
Signed-off-by: David S. Miller

clk: x86: Set default parent to 48Mhz

2018-08-30T21:47:41+00:00

System clk provided in ST soc can be set to:
48Mhz, non-spread
25Mhz, spread
To get accurate rate, we need it to set it at non-spread
option which is 48Mhz.

Signed-off-by: Akshu Agrawal 
Reviewed-by: Daniel Kurtz 
Fixes: 421bf6a1f061 ("clk: x86: Add ST oscout platform clock")
Signed-off-by: Stephen Boyd

clk: npcm7xx: fix memory allocation

2018-08-28T22:12:59+00:00

One of the more common cases of allocation size calculations is finding
the size of a structure that has a zero-sized array at the end, along
with memory for some number of elements for that array. For example:

struct foo {
	int stuff;
        void *entry[];
};

instance = kzalloc(sizeof(struct foo) + sizeof(void *) * count,
GFP_KERNEL);

Instead of leaving these open-coded and prone to type mistakes, we can
now use the new struct_size() helper:

instance = kzalloc(struct_size(instance, entry, count), GFP_KERNEL);

Notice that, currently, there is a bug during the allocation:

sizeof(npcm7xx_clk_data) should be sizeof(*npcm7xx_clk_data)

Fix this bug by using struct_size() in kzalloc()

This issue was detected with the help of Coccinelle.

Cc: stable@vger.kernel.org
Signed-off-by: Gustavo A. R. Silva 
Reviewed-by: Kees Cook 
Reviewed-by: Avi Fishman 
Signed-off-by: Stephen Boyd

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

2018-08-23T20:52:46+00:00

Pull ARM SoC driver updates from Olof Johansson:
 "Some of the larger changes this merge window:

   - Removal of drivers for Exynos5440, a Samsung SoC that never saw
     widespread use.

   - Uniphier support for USB3 and SPI reset handling

   - Syste control and SRAM drivers and bindings for Allwinner platforms

   - Qualcomm AOSS (Always-on subsystem) reset controller drivers

   - Raspberry Pi hwmon driver for voltage

   - Mediatek pwrap (pmic) support for MT6797 SoC"

* tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (52 commits)
  drivers/firmware: psci_checker: stash and use topology_core_cpumask for hotplug tests
  soc: fsl: cleanup Kconfig menu
  soc: fsl: dpio: Convert DPIO documentation to .rst
  staging: fsl-mc: Remove remaining files
  staging: fsl-mc: Move DPIO from staging to drivers/soc/fsl
  staging: fsl-dpaa2: eth: move generic FD defines to DPIO
  soc: fsl: qe: gpio: Add qe_gpio_set_multiple
  usb: host: exynos: Remove support for Exynos5440
  clk: samsung: Remove support for Exynos5440
  soc: sunxi: Add the A13, A23 and H3 system control compatibles
  reset: uniphier: add reset control support for SPI
  cpufreq: exynos: Remove support for Exynos5440
  ata: ahci-platform: Remove support for Exynos5440
  soc: imx6qp: Use GENPD_FLAG_ALWAYS_ON for PU errata
  soc: mediatek: pwrap: add mt6351 driver for mt6797 SoCs
  soc: mediatek: pwrap: add pwrap driver for mt6797 SoCs
  soc: mediatek: pwrap: fix cipher init setting error
  dt-bindings: pwrap: mediatek: add pwrap support for MT6797
  reset: uniphier: add USB3 core reset control
  dt-bindings: reset: uniphier: add USB3 core reset support
  ...

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

2018-08-23T20:44:43+00:00

Pull ARM 32-bit SoC platform updates from Olof Johansson:
 "Most of the SoC updates in this cycle are cleanups and moves to more
  modern infrastructure:

   - Davinci was moved to common clock framework

   - OMAP1-based Amstrad E3 "Superphone" saw a bunch of cleanups to the
     keyboard interface (bitbanged AT keyboard via GPIO).

   - Removal of some stale code for Renesas platforms

   - Power management improvements for i.MX6LL"

* tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (112 commits)
  ARM: uniphier: select RESET_CONTROLLER
  arm64: uniphier: select RESET_CONTROLLER
  ARM: uniphier: remove empty Makefile
  ARM: exynos: Clear global variable on init error path
  ARM: exynos: Remove outdated maintainer information
  ARM: shmobile: Always enable ARCH_TIMER on SoCs with A7 and/or A15
  ARM: shmobile: r8a7779: hide unused r8a7779_platform_cpu_kill
  soc: r9a06g032: don't build SMP files for non-SMP config
  ARM: shmobile: Add the R9A06G032 SMP enabler driver
  ARM: at91: pm: configure wakeup sources for ULP1 mode
  ARM: at91: pm: add PMC fast startup registers defines
  ARM: at91: pm: Add ULP1 mode support
  ARM: at91: pm: Use ULP0 naming instead of slow clock
  ARM: hisi: handle of_iomap and fix missing of_node_put
  ARM: hisi: check of_iomap and fix missing of_node_put
  ARM: hisi: fix error handling and missing of_node_put
  ARM: mx5: Set the DBGEN bit in ARM_GPC register
  ARM: imx51: Configure M4IF to avoid visual artifacts
  ARM: imx: call imx6sx_cpuidle_init() conditionally for 6sll
  ARM: imx: fix i.MX6SLL build
  ...

Merge tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux

2018-08-16T04:41:21+00:00

Pull clk updates from Stephen Boyd:
 "The new and exciting feature this time around is in the clk core.
  We've added duty cycle support to the clk API so that clk signal duty
  cycle ratios can be adjusted while taking into account things like clk
  dividers and clk tree hierarchy. So far only one SoC has implemented
  support for this, but I expect there will be more to come in the
  future.

  Outside of the core, we have the usual pile of clk driver updates and
  additions. The Amlogic meson driver got the most lines in the diffstat
  this time around because it added support for a whole bunch of
  hardware and duty cycle configuration. After that the Rockchip PX30,
  Qualcomm SDM845, and Renesas SoC drivers fill in a majority of the
  diff. We're left with the collection of non-critical fixes after that.
  Overall it looks pretty quiet this time.

  Core:
   - Clk duty cycle support
   - Proper CLK_SET_RATE_GATE support throughout the tree

  New Drivers:
   - Actions Semi Owl series S700 SoC clk driver
   - Qualcomm SDM845 display clock controller
   - i.MX6SX ocram_s clk support
   - Uniphier NAND, USB3 PHY, and SPI clk support
   - Qualcomm RPMh clk driver
   - i.MX7D mailbox clk support
   - Maxim 9485 Programmable Clock Generator
   - expose 32 kHz PLL on PXA SoCs
   - imx6sll GPIO clk gate support
   - Atmel at91 I2S audio clk support
   - SI544/SI514 clk on/off support
   - i.MX6UL GPIO clock gates in CCM CCGR
   - Renesas Crypto Engine clocks on R-Car H3
   - Renesas clk support for the new RZ/N1D SoC
   - Allwinner A64 display engine clock support
   - support for Rockchip's PX30 SoC
   - Amlogic Meson axg PCIe and audio clocks
   - Amlogic Meson GEN CLK on gxbb, gxl and axg

  Updates:
   - remove an unused variable from Exynos4412 ISP driver
   - fix a thinko bug in SCMI clk division logic
   - add missing of_node_put()s in some i.MX clk drivers
   - Tegra SDMMC clk jitter improvements with high speed signaling modes
   - SPDX tagging for qcom and cs2000-cp drivers
   - stop leaking con ids in __clk_put()
   - fix a corner case in fixed factor clk probing where node is in DT
     but parent clk is registered much later
   - Marvell Armada 3700 clk_pm_cpu_get_parent() had an invalid return
     value
   - i.MX clk init arrays removed in place of CLK_IS_CRITICAL
   - convert to CLK_IS_CRITICAL for i.MX51/53 driver
   - fix Tegra BPMP driver oops when xlating a NULL clk
   - proper default configuration for vic03 and vde clks on Tegra124
   - mark Tegra memory controller clks as critical
   - fix array bounds clamp in Tegra's emc determine_rate() op
   - Ingenic i2s bit update and allow UDC clk to gate
   - fix name of aspeed SDC clk define to have only one 'CLK'
   - fix i.MX6QDL video clk parent
   - critical clk markings for qcom SDM845
   - fix Stratix10 mpu_free_clk and sdmmc_free_clk parents
   - mark Rockchip's pclk_rkpwm_pmu as critical clock, due to it
     supplying the pwm used to drive the logic supply of the rk3399
     core"

* tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: (85 commits)
  clk: rockchip: Add pclk_rkpwm_pmu to PMU critical clocks in rk3399
  clk: cs2000-cp: convert to SPDX identifiers
  clk: scmi: Fix the rounding of clock rate
  clk: qcom: Add display clock controller driver for SDM845
  clk: mvebu: armada-37xx-periph: Remove unused var num_parents
  clk: samsung: Remove unused mout_user_aclk400_mcuisp_p4x12 variable
  clk: actions: Add S700 SoC clock support
  dt-bindings: clock: Add S700 support for Actions Semi Soc's
  clk: actions: Add missing REGMAP_MMIO dependency
  clk: uniphier: add clock frequency support for SPI
  clk: uniphier: add more USB3 PHY clocks
  clk: uniphier: add NAND 200MHz clock
  clk: tegra: make sdmmc2 and sdmmc4 as sdmmc clocks
  clk: tegra: Add sdmmc mux divider clock
  clk: tegra: Refactor fractional divider calculation
  clk: tegra: Fix includes required by fence_udelay()
  clk: imx6sll: fix missing of_node_put()
  clk: imx6ul: fix missing of_node_put()
  clk: imx: add ocram_s clock for i.mx6sx
  clk: mvebu: armada-37xx-periph: Fix wrong return value in get_parent
  ...

Merge branches 'clk-actions-s700', 'clk-exynos-unused', 'clk-qcom-dispcc-845', 'clk-scmi-round' and 'clk-cs2000-spdx' into clk-next

2018-08-15T06:00:15+00:00

* clk-actions-s700:
  :  - Actions Semi Owl series S700 SoC clk driver
  clk: actions: Add S700 SoC clock support
  dt-bindings: clock: Add S700 support for Actions Semi Soc's
  clk: actions: Add missing REGMAP_MMIO dependency

* clk-exynos-unused:
  :  - Remove an unused variable from Exynos4412 ISP driver
  clk: samsung: Remove unused mout_user_aclk400_mcuisp_p4x12 variable

* clk-qcom-dispcc-845:
  :  - Qualcomm SDM845 display clock controller
  clk: qcom: Add display clock controller driver for SDM845
  dt-bindings: clock: Introduce QCOM Display clock bindings
  clk: qcom: Move frequency table macro to common file

* clk-scmi-round:
  :  - Fix a thinko bug in SCMI clk division logic
  clk: scmi: Fix the rounding of clock rate

* clk-cs2000-spdx:
  clk: cs2000-cp: convert to SPDX identifiers

Merge branches 'clk-imx6-ocram', 'clk-missing-put', 'clk-tegra-sdmmc-jitter', 'clk-allwinner' and 'clk-uniphier' into clk-next

2018-08-15T05:58:53+00:00

* clk-imx6-ocram:
  :  - i.MX6SX ocram_s clk support
  clk: imx: add ocram_s clock for i.mx6sx

* clk-missing-put:
  :  - Add missing of_node_put()s in some i.MX clk drivers
  clk: imx6sll: fix missing of_node_put()
  clk: imx6ul: fix missing of_node_put()

* clk-tegra-sdmmc-jitter:
  :  - Tegra SDMMC clk jitter improvements with high speed signaling modes
  clk: tegra: make sdmmc2 and sdmmc4 as sdmmc clocks
  clk: tegra: Add sdmmc mux divider clock
  clk: tegra: Refactor fractional divider calculation
  clk: tegra: Fix includes required by fence_udelay()

* clk-allwinner:
  clk: sunxi-ng: add A64 compatible string
  dt-bindings: add compatible string for the A64 DE2 CCU
  clk: sunxi-ng: r40: Export video PLLs
  clk: sunxi-ng: r40: Allow setting parent rate to display related clocks
  clk: sunxi-ng: r40: Add minimal rate for video PLLs

* clk-uniphier:
  :  - Uniphier NAND, USB3 PHY, and SPI clk support
  clk: uniphier: add clock frequency support for SPI
  clk: uniphier: add more USB3 PHY clocks
  clk: uniphier: add NAND 200MHz clock

Merge branches 'clk-qcom-rpmh', 'clk-qcom-spdx', 'clk-con-id-leak', 'clk-fixed-factor-populated' and 'clk-mvebu-periph-parent' into clk-next

2018-08-15T05:58:49+00:00

* clk-qcom-rpmh:
  :  - Qualcomm RPMh clk driver
  clk: qcom: clk-rpmh: Add QCOM RPMh clock driver

* clk-qcom-spdx:
  :  - SPDX tagging for qcom
  clk: qcom: Update SPDX headers for common files

* clk-con-id-leak:
  :  - Stop leaking con ids in __clk_put()
  clk: core: Potentially free connection id

* clk-fixed-factor-populated:
  :  - Fix a corner case in fixed factor clk probing where node is in DT but
  :    parent clk is registered much later
  clk: clk-fixed-factor: Clear OF_POPULATED flag in case of failure

* clk-mvebu-periph-parent:
  :  - Marvell Armada 3700 clk_pm_cpu_get_parent() had an invalid return value
  clk: mvebu: armada-37xx-periph: Remove unused var num_parents
  clk: mvebu: armada-37xx-periph: Fix wrong return value in get_parent