[PATCH v4 2/6] dt-bindings: mmc: Add support for Mediatek MT7986

[Frank Wunderlich]

From: Sam Shih <sam.shih at mediatek.com>

This commit adds dt-binding documentation of mmc for Mediatek MT7986 SoC
Platform.
Add SoC specific section for defining clock configuration.

Signed-off-by: Sam Shih <sam.shih at mediatek.com>
Signed-off-by: Frank Wunderlich <frank-w at public-files.de>
---
v3:
- drop assigned-clocks/assigned-clock-parents
- fix clock description
v4:
- update binding for mt7986 (new mtk version)
- squashed part 1 (compatible) and 3 (SoC specific clock config)
  and so dropped Ack from Rob for 1rst Part
---
 .../devicetree/bindings/mmc/mtk-sd.yaml       | 26 +++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/Documentation/devicetree/bindings/mmc/mtk-sd.yaml b/Documentation/devicetree/bindings/mmc/mtk-sd.yaml
index 0cedeb12892d..a7fb54416717 100644
--- a/Documentation/devicetree/bindings/mmc/mtk-sd.yaml
+++ b/Documentation/devicetree/bindings/mmc/mtk-sd.yaml
@@ -20,6 +20,7 @@ properties:
           - mediatek,mt6795-mmc
           - mediatek,mt7620-mmc
           - mediatek,mt7622-mmc
+          - mediatek,mt7986-mmc
           - mediatek,mt8135-mmc
           - mediatek,mt8173-mmc
           - mediatek,mt8183-mmc
@@ -237,6 +238,31 @@ allOf:
         reg:
           minItems: 2
 
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - mediatek,mt7986-mmc
+    then:
+      properties:
+        clocks:
+          minItems: 3
+          items:
+            - description: source clock
+            - description: HCLK which used for host
+            - description: independent source clock gate
+            - description: bus clock used for internal register access (required for MSDC0/3).
+            - description: msdc subsys clock gate
+        clock-names:
+          minItems: 3
+          items:
+            - const: source
+            - const: hclk
+            - const: "source_cg"
+            - const: "bus_clk"
+            - const: "sys_cg"
+
   - if:
       properties:
         compatible:
-- 
2.34.1