[PATCH 0/9] rockchip: Add power controller support for RK3528

[Jonas Karlman]

The Rockchip RK3528 support multiple power domains, one PD_GPU that can
fully be powered down, and other that can be idle requested.

Vendor kernel flag all power domains on RK3528 as always-on, this takes
a different route and instead tries to describe all devices power-domain
in the device tree, even for controllers with unsupported runtime status.

The PD_RKVDEC is used by RKVDEC and DDRPHY CRU, and is kept disabled to
prevent a full system reset when trying to read current rate of the
SCMI_CLK_DDR clock.

Patch 1-4 prepares and makes it possible to use the PD_GPU power domain
for a separate "Add GPU support for RK3528" series.

Patch 7-9 updates dt-bindings for controllers not supporting use of the
power-domains prop and enables the PD_RKVENC, PD_VO and PD_VPU domains.

pm_genpd_summary on a Radxa E20C after this:

  domain                          status          children        performance
      /device                         runtime status                  managed by
  ------------------------------------------------------------------------------
  vpu                             on                              0
      ffaf0000.gpio                   unsupported                 0           SW
      ffb10000.gpio                   unsupported                 0           SW
      ffbe0000.ethernet               active                      0           SW
      ffae0000.adc                    unsupported                 0           SW
      ffbf0000.mmc                    suspended                   0           SW
  vo                              on                              0
      ffb00000.gpio                   unsupported                 0           SW
      ffc30000.mmc                    suspended                   0           SW
  venc                            on                              0
      ffb20000.gpio                   unsupported                 0           SW
      ffa58000.i2c                    unsupported                 0           SW
  gpu                             off-0                           0
      ff700000.gpu                    suspended                   0           SW

Jonas Karlman (9):
  dt-bindings: power: rockchip: Add support for RK3528
  pmdomain: rockchip: Add support for RK3528
  dt-bindings: rockchip: pmu: Add compatible for RK3528
  arm64: dts: rockchip: Add power controller for RK3528
  dt-bindings: mmc: sdhci-of-dwcmhsc: Allow use of a power-domain
  dt-bindings: gpio: rockchip: Allow use of a power-domain
  dt-bindings: i2c: i2c-rk3x: Allow use of a power-domain
  dt-bindings: iio: adc: rockchip-saradc: Allow use of a power-domain
  arm64: dts: rockchip: Enable more power domains for RK3528

 .../devicetree/bindings/arm/rockchip/pmu.yaml |  2 +
 .../bindings/gpio/rockchip,gpio-bank.yaml     |  3 +
 .../devicetree/bindings/i2c/i2c-rk3x.yaml     |  3 +
 .../bindings/iio/adc/rockchip-saradc.yaml     |  3 +
 .../bindings/mmc/snps,dwcmshc-sdhci.yaml      |  4 -
 .../power/rockchip,power-controller.yaml      |  1 +
 arch/arm64/boot/dts/rockchip/rk3528.dtsi      | 87 +++++++++++++++++++
 drivers/pmdomain/rockchip/pm-domains.c        | 27 ++++++
 .../dt-bindings/power/rockchip,rk3528-power.h | 19 ++++
 9 files changed, 145 insertions(+), 4 deletions(-)
 create mode 100644 include/dt-bindings/power/rockchip,rk3528-power.h

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2.49.0