dt-bindings: firmware: imx: Add imx-scu gpio node

Add the description for imx-scu gpio subnode.

Signed-off-by: Shenwei Wang <shenwei.wang@nxp.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>

diff --git a/Documentation/devicetree/bindings/firmware/fsl,scu.yaml b/Documentation/devicetree/bindings/firmware/fsl,scu.yaml
index b40b0ef..557e524 100644 (file)
--- a/Documentation/devicetree/bindings/firmware/fsl,scu.yaml
+++ b/Documentation/devicetree/bindings/firmware/fsl,scu.yaml
@@ -30,6 +30,11 @@ properties:
       Clock controller node that provides the clocks controlled by the SCU
     $ref: /schemas/clock/fsl,scu-clk.yaml
 
+  gpio:
+    description:
+      Control the GPIO PINs on SCU domain over the firmware APIs
+    $ref: /schemas/gpio/fsl,imx8qxp-sc-gpio.yaml
+
   ocotp:
     description:
       OCOTP controller node provided by the SCU