dt-bindings: mt8173-mtu3: add generic compatible and rename file

The mt8173-mtu3.txt actually holds the bindings for all mediatek
SoCs with usb3 DRD IP, so add a generic compatible and change the
name to mediatek,mtu3.txt.

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 5 insertions, 1 deletions

diff --git a/Documentation/devicetree/bindings/usb/mt8173-mtu3.txt b/Documentation/devicetree/bindings/usb/mediatek,mtu3.txt
index b8ea394397bf..838ae48eafc1 100644
--- a/Documentation/devicetree/bindings/usb/mt8173-mtu3.txt
+++ b/Documentation/devicetree/bindings/usb/mediatek,mtu3.txt
@@ -1,7 +1,11 @@
 The device node for Mediatek USB3.0 DRD controller
 
 Required properties:
- - compatible : should be "mediatek,mt8173-mtu3"
+ - compatible : should be "mediatek,<soc-model>-mtu3", "mediatek,mtu3",
+        soc-model is the name of SoC, such as mt8173, mt2712 etc,
+        when using "mediatek,mtu3" compatible string, you need SoC specific
+        ones in addition, one of:
+        - "mediatek,mt8173-mtu3"
  - reg : specifies physical base address and size of the registers
  - reg-names: should be "mac" for device IP and "ippc" for IP port control
  - interrupts : interrupt used by the device IP