scsi: dt-bindings: mediatek,ufs: add MT8195 compatible and update clock nodes

Add MT8195 UFSHCI compatible string.  Relax the schema to allow between
one to eight clocks/clock-names entries for all MediaTek UFS
nodes. Legacy platforms may only need a few clocks, whereas newer devices
such as the MT8195 require additional clock-gating domains. For MT8195
specifically, enforce exactly eight clocks and clock-names entries to
satisfy its hardware requirements.

Signed-off-by: Macpaul Lin <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Martin K. Petersen <[email protected]>

Author: macpaul-lin-mtk

Documentation/devicetree/bindings/ufs/mediatek,ufs.yaml

@@ -9,21 +9,20 @@ title: Mediatek Universal Flash Storage (UFS) Controller
 maintainers:
   - Stanley Chu <[email protected]>
 
-allOf:
-  - $ref: ufs-common.yaml
-
 properties:
   compatible:
     enum:
       - mediatek,mt8183-ufshci
       - mediatek,mt8192-ufshci
+      - mediatek,mt8195-ufshci
 
   clocks:
-    maxItems: 1
+    minItems: 1
+    maxItems: 8
 
   clock-names:
-    items:
-      - const: ufs
+    minItems: 1
+    maxItems: 8
 
   phys:
     maxItems: 1
@@ -47,6 +46,37 @@ required:
 
 unevaluatedProperties: false
 
+allOf:
+  - $ref: ufs-common.yaml
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - mediatek,mt8195-ufshci
+    then:
+      properties:
+        clocks:
+          minItems: 8
+        clock-names:
+          items:
+            - const: ufs
+            - const: ufs_aes
+            - const: ufs_tick
+            - const: unipro_sysclk
+            - const: unipro_tick
+            - const: unipro_mp_bclk
+            - const: ufs_tx_symbol
+            - const: ufs_mem_sub
+    else:
+      properties:
+        clocks:
+          maxItems: 1
+        clock-names:
+          items:
+            - const: ufs
+
 examples:
   - |
     #include <dt-bindings/clock/mt8183-clk.h>