[PATCH v3 4/7] dt-bindings: usb: dwc3-imx8mp: add power domain property

[Lucas Stach]

The USB controllers in the i.MX8MP are located inside the HSIO
power domain. Add the power-domains property to the DT binding
to be able to describe the hardware properly.

Signed-off-by: Lucas Stach <l.stach at pengutronix.de>
---
 Documentation/devicetree/bindings/usb/fsl,imx8mp-dwc3.yaml | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Documentation/devicetree/bindings/usb/fsl,imx8mp-dwc3.yaml b/Documentation/devicetree/bindings/usb/fsl,imx8mp-dwc3.yaml
index 974032b1fda0..048a3e4c1b60 100644
--- a/Documentation/devicetree/bindings/usb/fsl,imx8mp-dwc3.yaml
+++ b/Documentation/devicetree/bindings/usb/fsl,imx8mp-dwc3.yaml
@@ -49,6 +49,9 @@ properties:
       - const: hsio
       - const: suspend
 
+  power-domains:
+    maxItems: 1
+
 # Required child node:
 
 patternProperties:
@@ -65,12 +68,14 @@ required:
   - clocks
   - clock-names
   - interrupts
+  - power-domains
 
 additionalProperties: false
 
 examples:
   - |
     #include <dt-bindings/clock/imx8mp-clock.h>
+    #include <dt-bindings/power/imx8mp-power.h>
     #include <dt-bindings/interrupt-controller/arm-gic.h>
     usb3_0: usb at 32f10100 {
       compatible = "fsl,imx8mp-dwc3";
@@ -79,6 +84,7 @@ examples:
                <&clk IMX8MP_CLK_USB_ROOT>;
       clock-names = "hsio", "suspend";
       interrupts = <GIC_SPI 148 IRQ_TYPE_LEVEL_HIGH>;
+      power-domains = <&hsio_blk_ctrl IMX8MP_HSIOBLK_PD_USB>;
       #address-cells = <1>;
       #size-cells = <1>;
       dma-ranges = <0x40000000 0x40000000 0xc0000000>;
-- 
2.30.2