[v3,0/5] add suspend/resume support for i.mx8x SoCs

Message

Shenwei Wang Oct. 25, 2022, 6:32 p.m. UTC

On i.MX8QM/QXP/DXL SoCs, even a GPIO is selected as the wakeup source,
the GPIO block will be powered off when system enters into suspend
state. This can greatly reduce the power consumption of suspend state
because the whole partition can be shutdown. This is called PAD wakeup
feature on i.MX8x platform.

This series of patches enable this wakeup feature on i.MX8QM/QXP/DXL
platforms.

Changes in v3:
 - According to the feedback from Linus Walleij, the wakeup feature is
   moved to pinctrl driver, and the array of gpio-pin mapping is moved
   to gpio device node and initialized via gpio-ranges property.

Shenwei Wang (5):
  arm64: dts: imx8dxl-ss-lsio: add gpio-ranges property
  arm64: dts: imx8qm-ss-lsio: add gpio-ranges property
  arm64: dts: imx8qxp-ss-lsio: add gpio-ranges property
  pinctrl: freescale: add pad wakeup config
  gpio: mxc: enable pad wakeup on i.MX8x platforms

 .../boot/dts/freescale/imx8dxl-ss-lsio.dtsi   | 41 +++++++++
 .../boot/dts/freescale/imx8qm-ss-lsio.dtsi    | 38 ++++++++
 .../boot/dts/freescale/imx8qxp-ss-lsio.dtsi   | 25 +++++
 drivers/gpio/gpio-mxc.c                       | 91 ++++++++++++++++++-
 drivers/pinctrl/freescale/pinctrl-scu.c       | 30 ++++++
 5 files changed, 224 insertions(+), 1 deletion(-)

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2.34.1