[PATCH v3] dt-bindings: mmc: renesas,sdhi: add optional SDnH clock

[Wolfram Sang <wsa+renesas@sang-engineering.com>]

This only applies to R-Car Gen2 and later generations, so we need to
distinguish.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org>
---

v1 and v2 were part of a 21-patch-series which was accepted now except
for this patch. Updated according to Geert's comments and finally also
sent to Rob and the DT mailing list.

Tested with:
m dtbs_check DT_SCHEMA_FILES=Documentation/devicetree/bindings/mmc/renesas,sdhi.yaml

I hope it really does what I intended to check.

If so, the patch can be applied individually. I think, however, it is
most convenient if Geert picks it up together with the 20 other patches.

 .../devicetree/bindings/mmc/renesas,sdhi.yaml | 40 ++++++++++++++-----
 1 file changed, 31 insertions(+), 9 deletions(-)

diff --git a/Documentation/devicetree/bindings/mmc/renesas,sdhi.yaml b/Documentation/devicetree/bindings/mmc/renesas,sdhi.yaml
index 9f1e7092cf44..43fc6ac56038 100644
--- a/Documentation/devicetree/bindings/mmc/renesas,sdhi.yaml
+++ b/Documentation/devicetree/bindings/mmc/renesas,sdhi.yaml
@@ -129,15 +129,37 @@ allOf:
         - clock-names
         - resets
     else:
-      properties:
-        clocks:
-          minItems: 1
-          maxItems: 2
-        clock-names:
-          minItems: 1
-          items:
-            - const: core
-            - const: cd
+      if:
+        properties:
+          compatible:
+            contains:
+              enum:
+                - renesas,rcar-gen2-sdhi
+                - renesas,rcar-gen3-sdhi
+      then:
+        properties:
+          clocks:
+            minItems: 1
+            maxItems: 3
+          clock-names:
+            minItems: 1
+            maxItems: 3
+            uniqueItems: true
+            items:
+              - const: core
+              - enum: [ clkh, cd ]
+              - const: cd
+      else:
+        properties:
+          clocks:
+            minItems: 1
+            maxItems: 2
+          clock-names:
+            minItems: 1
+            maxItems: 2
+            items:
+              - const: core
+              - const: cd
 
   - if:
       properties:
-- 
2.30.2