[PATCH 6/9] dt-bindings: gpio: rockchip: Allow use of a power-domain

[Jonas Karlman <jonas@kwiboo.se>]

The GPIO controllers in most Rockchip SoCs are part or power domains
that are always powered on, i.e. PD_BUS or PD_PMU.

On RK3528 the GPIO controllers are spread out among the PD_RKVENC, PD_VO
and PD_VPU power domains.

Add support to describe power-domains for the GPIO controllers.

Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
---
 Documentation/devicetree/bindings/gpio/rockchip,gpio-bank.yaml | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Documentation/devicetree/bindings/gpio/rockchip,gpio-bank.yaml b/Documentation/devicetree/bindings/gpio/rockchip,gpio-bank.yaml
index d76987ce8e50..bdd83f42615c 100644
--- a/Documentation/devicetree/bindings/gpio/rockchip,gpio-bank.yaml
+++ b/Documentation/devicetree/bindings/gpio/rockchip,gpio-bank.yaml
@@ -41,6 +41,9 @@ properties:
   "#interrupt-cells":
     const: 2
 
+  power-domains:
+    maxItems: 1
+
 patternProperties:
   "^.+-hog(-[0-9]+)?$":
     type: object
-- 
2.49.0