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

[Ulf Hansson]

On Mon, 19 May 2025 at 00:07, Jonas Karlman <jonas at kwiboo.se> wrote:
>
> 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
>

Patch 1->3 applied for next, thanks! Note that patch1 and patch 3 are
also available on the immutable dt branch.

Kind regards
Uffe