[PATCH v6 6/8] dt-bindings: power: rockchip: add regulator support

[Sebastian Reichel]

Add optional support for a voltage supply required to enable a
power domain. The binding follows the way it is handled by the
Mediatek binding to keep things consistent.

This will initially be used by the RK3588 GPU power domain, which
fails to be enabled when the GPU regulator is not enabled. It is
not limited to that platform, since older generations have similar
requirements. They worked around this by marking the regulators
as always-on instead of describing the dependency.

Reviewed-by: Heiko Stuebner <heiko at sntech.de>
Tested-by: Heiko Stuebner <heiko at sntech.de>
Acked-by: Rob Herring (Arm) <robh at kernel.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel at collabora.com>
---
 Documentation/devicetree/bindings/power/rockchip,power-controller.yaml | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Documentation/devicetree/bindings/power/rockchip,power-controller.yaml b/Documentation/devicetree/bindings/power/rockchip,power-controller.yaml
index 650dc0aae6f518578f57e8ec4335bc8251b736a7..ebab98987e492d64fff9977848fd8942ed96c4b9 100644
--- a/Documentation/devicetree/bindings/power/rockchip,power-controller.yaml
+++ b/Documentation/devicetree/bindings/power/rockchip,power-controller.yaml
@@ -132,6 +132,9 @@ $defs:
           A number of phandles to clocks that need to be enabled
           while power domain switches state.
 
+      domain-supply:
+        description: domain regulator supply.
+
       pm_qos:
         $ref: /schemas/types.yaml#/definitions/phandle-array
         items:

-- 
2.47.2