linux.git/include/soc/at91, branch v6.6.131

ARM: at91: Remove unused extern declarations

2023-07-29T13:56:09+00:00

commit 157576d55233 ("misc: remove atmel_tclib")
left behind this.

Signed-off-by: YueHaibing 
Link: https://lore.kernel.org/r/20230725141105.26904-1-yuehaibing@huawei.com
Signed-off-by: Claudiu Beznea

ARM: at91: pm: avoid soft resetting AC DLL

2022-11-01T10:25:19+00:00

Do not soft reset AC DLL as controller is buggy and this operation my
introduce glitches in the controller leading to undefined behavior.

Fixes: f0bbf17958e8 ("ARM: at91: pm: add self-refresh support for sama7g5")
Depends-on: a02875c4cbd6 ("ARM: at91: pm: fix self-refresh for sama7g5")
Signed-off-by: Claudiu Beznea 
Link: https://lore.kernel.org/r/20221026124114.985876-2-claudiu.beznea@microchip.com

Merge tag 'pinctrl-v6.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl

2022-10-11T17:59:59+00:00

Pull pin control updates from Linus Walleij:
 "There is nothing exciting going on, no core changes, just a few
  drivers and cleanups.

  New drivers:

   - Cypress CY8C95x0 chip pin control support, along with an immediate
     cleanup

   - Mediatek MT8188 SoC pin control support

   - Qualcomm SM8450 and SC8280XP LPASS (low power audio subsystem) pin
     control support

   - Qualcomm PM7250, PM8450

   - Rockchip RV1126 SoC pin control support

  Improvements:

   - Fix some missing pins in the Armada 37xx driver

   - Convert Broadcom and Nomadik drivers to use PINCTRL_PINGROUP()
     macro

   - Fix some GPIO irq_chips to be immutable

   - Massive Qualcomm device tree binding cleanup, with more to come"

* tag 'pinctrl-v6.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (119 commits)
  MAINTAINERS: adjust STARFIVE JH7100 PINCTRL DRIVER after file movement
  pinctrl: starfive: Rename "pinctrl-starfive" to "pinctrl-starfive-jh7100"
  pinctrl: Create subdirectory for StarFive drivers
  dt-bindings: pinctrl: st,stm32: Document interrupt-controller property
  dt-bindings: pinctrl: st,stm32: Document gpio-hog pattern property
  dt-bindings: pinctrl: st,stm32: Document gpio-line-names
  pinctrl: st: stop abusing of_get_named_gpio()
  pinctrl: wpcm450: Correct the fwnode_irq_get() return value check
  pinctrl: bcm: Remove unused struct bcm6328_pingroup
  pinctrl: qcom: restrict drivers per ARM/ARM64
  pinctrl: bcm: ns: Remove redundant dev_err call
  gpio: rockchip: request GPIO mux to pinctrl when setting direction
  pinctrl: rockchip: add pinmux_ops.gpio_set_direction callback
  pinctrl: cy8c95x0: Align function names in cy8c95x0_pmxops
  pinctrl: cy8c95x0: Drop atomicity on operations on push_pull
  pinctrl: cy8c95x0: Lock register accesses in cy8c95x0_set_mux()
  pinctrl: sunxi: sun50i-h5: Switch to use dev_err_probe() helper
  pinctrl: stm32: Switch to use dev_err_probe() helper
  dt-bindings: qcom-pmic-gpio: Add PM7250B and PM8450 bindings
  pinctrl: qcom: spmi-gpio: Add compatible for PM7250B
  ...

pinctrl: at91: move gpio suspend/resume calls to driver's context

2022-09-02T22:19:23+00:00

Move gpio suspend/resume execution local to driver and let it execute as
close as possible to the moment the machine specific PM code is executed
(by setting it to .noirq member of dev_pm_ops). With this the
at91_pinctrl_gpio_suspend()/at91_pinctrl_gpio_resume() calls were removed
from arch/arm/mach-at91/pm.c and also a header has been removed.
The patch has been checked on sama5d3_xplained, sam9x60ek,
sama5d2_xplained, sama7g5ek boards.

Signed-off-by: Claudiu Beznea 
Link: https://lore.kernel.org/r/20220831135636.3176406-3-claudiu.beznea@microchip.com
Signed-off-by: Linus Walleij

ARM: at91: pm: fix DDR recalibration when resuming from backup and self-refresh

2022-08-31T07:28:18+00:00

On SAMA7G5, when resuming from backup and self-refresh, the bootloader
performs DDR PHY recalibration by restoring the value of ZQ0SR0 (stored
in RAM by Linux before going to backup and self-refresh). It has been
discovered that the current procedure doesn't work for all possible values
that might go to ZQ0SR0 due to hardware bug. The workaround to this is to
avoid storing some values in ZQ0SR0. Thus Linux will read the ZQ0SR0
register and cache its value in RAM after processing it (using
modified_gray_code array). The bootloader will restore the processed value.

Fixes: d2d4716d8384 ("ARM: at91: pm: save ddr phy calibration data to securam")
Suggested-by: Frederic Schumacher 
Signed-off-by: Claudiu Beznea 
Link: https://lore.kernel.org/r/20220826083927.3107272-4-claudiu.beznea@microchip.com

ARM: at91: pm: fix self-refresh for sama7g5

2022-08-31T07:27:57+00:00

It has been discovered that on some parts, from time to time, self-refresh
procedure doesn't work as expected. Debugging and investigating it proved
that disabling AC DLL introduce glitches in RAM controllers which
leads to unexpected behavior. This is confirmed as a hardware bug. DLL
bypass disables 3 DLLs: 2 DX DLLs and AC DLL. Thus, keep only DX DLLs
disabled. This introduce 6mA extra current consumption on VDDCORE when
switching to any ULP mode or standby mode but the self-refresh procedure
still works.

Fixes: f0bbf17958e8 ("ARM: at91: pm: add self-refresh support for sama7g5")
Suggested-by: Frederic Schumacher 
Signed-off-by: Claudiu Beznea 
Tested-by: Cristian Birsan 
Link: https://lore.kernel.org/r/20220826083927.3107272-3-claudiu.beznea@microchip.com

ARM: at91: PM: add cpu idle support for sama7g5

2022-02-25T11:36:25+00:00

Add CPU idle support for SAMA7G5. Support will make use of PMC_CPU_RATIO
register to divide the CPU clock by 16 before switching it to idle and
use automatic self-refresh option of DDR controller.

Signed-off-by: Claudiu Beznea 
Acked-by: Stephen Boyd 
Signed-off-by: Nicolas Ferre 
Link: https://lore.kernel.org/r/20220113144900.906370-5-claudiu.beznea@microchip.com

ARM: at91: ddr: fix typo to align with datasheet naming

2022-02-25T11:36:25+00:00

Fix typo on UDDRC_PWRCTL.SELFREF_SW bitmask to align with datasheet
naming.

Signed-off-by: Claudiu Beznea 
Signed-off-by: Nicolas Ferre 
Link: https://lore.kernel.org/r/20220113144900.906370-4-claudiu.beznea@microchip.com

ARM: at91: ddr: align macro definitions

2022-02-25T11:36:25+00:00

Align all macro definitions.

Signed-off-by: Claudiu Beznea 
Signed-off-by: Nicolas Ferre 
Link: https://lore.kernel.org/r/20220113144900.906370-3-claudiu.beznea@microchip.com

ARM: at91: ddr: remove CONFIG_SOC_SAMA7 dependency

2022-02-25T11:36:25+00:00

Remove CONFIG_SOC_SAMA7 dependency to avoid having #ifdef preprocessor
directives in driver code (arch/arm/mach-at91/pm.c). This prepares the
code for next commits.

Signed-off-by: Claudiu Beznea 
Signed-off-by: Nicolas Ferre 
Link: https://lore.kernel.org/r/20220113144900.906370-2-claudiu.beznea@microchip.com