arm64: dts: marvell: Use a SoC-specific compatible for xHCI on Armada37xx

Even if the Armada 37xx does not any specific setup, the device tree
binding documentation requires to use a SoC-specific version
corresponding to the platform first followed by the generic version.

This patch introduce this new compatible string and updates the
documentation accordingly.

Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>

2 files changed, 3 insertions, 1 deletions

diff --git a/Documentation/devicetree/bindings/usb/usb-xhci.txt b/Documentation/devicetree/bindings/usb/usb-xhci.txt
index 6a17aa85c4d5..966885c636d0 100644
--- a/Documentation/devicetree/bindings/usb/usb-xhci.txt
+++ b/Documentation/devicetree/bindings/usb/usb-xhci.txt
@@ -4,6 +4,7 @@ Required properties:
   - compatible: should be one or more of
 
     - "generic-xhci" for generic XHCI device
+    - "marvell,armada3700-xhci" for Armada 37xx SoCs
     - "marvell,armada-375-xhci" for Armada 375 SoCs
     - "marvell,armada-380-xhci" for Armada 38x SoCs
     - "renesas,xhci-r8a7790" for r8a7790 SoC
diff --git a/arch/arm64/boot/dts/marvell/armada-37xx.dtsi b/arch/arm64/boot/dts/marvell/armada-37xx.dtsi
index 55a861d60fae..1d4fb4d27787 100644
--- a/arch/arm64/boot/dts/marvell/armada-37xx.dtsi
+++ b/arch/arm64/boot/dts/marvell/armada-37xx.dtsi
@@ -106,7 +106,8 @@
                         };
 
                         usb3: usb@58000 {
-                                compatible = "generic-xhci";
+                                compatible = "marvell,armada3700-xhci",
+                                "generic-xhci";
                                 reg = <0x58000 0x4000>;
                                 interrupts = <GIC_SPI 15 IRQ_TYPE_LEVEL_HIGH>;
                                 status = "disabled";