dt-bindings: usb: mtk-xhci: add support wakeup for mt8183 and mt8192

These two HW of wakeup don't follow MediaTek internal IPM rule,
both use a specific way, like as early revision of mt8173.

Due to the index 2 already used by many DTS, it's better to keep
it unchanged for backward compatibility, treat specific ones without
following IPM rule as revision 1.x, meanwhile reserve 3~99 for
later revisions with following the IPM rule.

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/1616482975-17841-2-git-send-email-chunfeng.yun@mediatek.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/Documentation/devicetree/bindings/usb/mediatek,mtk-xhci.yaml b/Documentation/devicetree/bindings/usb/mediatek,mtk-xhci.yaml
index 14f40ef..45bf4ea 100644 (file)
--- a/Documentation/devicetree/bindings/usb/mediatek,mtk-xhci.yaml
+++ b/Documentation/devicetree/bindings/usb/mediatek,mtk-xhci.yaml
@@ -30,6 +30,7 @@ properties:
           - mediatek,mt7629-xhci
           - mediatek,mt8173-xhci
           - mediatek,mt8183-xhci
+          - mediatek,mt8192-xhci
       - const: mediatek,mtk-xhci
 
   reg:
@@ -127,10 +128,13 @@ properties:
         - description:
             The second cell represents the register base address of the glue
             layer in syscon
-        - description:
+        - description: |
             The third cell represents the hardware version of the glue layer,
-            1 is used by mt8173 etc, 2 is used by mt2712 etc
-          enum: [1, 2]
+            1 - used by mt8173 etc, revision 1 without following IPM rule;
+            2 - used by mt2712 etc, revision 2 following IPM rule;
+            101 - used by mt8183, specific 1.01;
+            102 - used by mt8192, specific 1.02;
+          enum: [1, 2, 101, 102]
 
   mediatek,u3p-dis-msk:
     $ref: /schemas/types.yaml#/definitions/uint32