dt-bindings: mmc: sdhci-of-aspeed: Add AST2700 compatible

AST2700 SDHCI controller is fully compatible with AST2600.

However, it is necessary to take the AST2700 SD controller out of
reset, so require the 'resets' property.

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Signed-off-by: Ryan Chen <ryan_chen@aspeedtech.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

Documentation/devicetree/bindings/mmc/aspeed,sdhci.yaml

@@ -22,10 +22,15 @@ description: |+
 
 properties:
   compatible:
-    enum:
-      - aspeed,ast2400-sd-controller
-      - aspeed,ast2500-sd-controller
-      - aspeed,ast2600-sd-controller
+    oneOf:
+      - enum:
+          - aspeed,ast2400-sd-controller
+          - aspeed,ast2500-sd-controller
+          - aspeed,ast2600-sd-controller
+      - items:
+          - const: aspeed,ast2700-sd-controller
+          - const: aspeed,ast2600-sd-controller
+
   reg:
     maxItems: 1
     description: Common configuration registers
@@ -38,6 +43,9 @@ properties:
     maxItems: 1
     description: The SD/SDIO controller clock gate
 
+  resets:
+    maxItems: 1
+
 patternProperties:
   "^sdhci@[0-9a-f]+$":
     type: object
@@ -46,10 +54,15 @@ patternProperties:
 
     properties:
       compatible:
-        enum:
-          - aspeed,ast2400-sdhci
-          - aspeed,ast2500-sdhci
-          - aspeed,ast2600-sdhci
+        oneOf:
+          - enum:
+              - aspeed,ast2400-sdhci
+              - aspeed,ast2500-sdhci
+              - aspeed,ast2600-sdhci
+          - items:
+              - const: aspeed,ast2700-sdhci
+              - const: aspeed,ast2600-sdhci
+
       reg:
         maxItems: 1
         description: The SDHCI registers
@@ -78,6 +91,18 @@ required:
   - ranges
   - clocks
 
+if:
+  properties:
+    compatible:
+      contains:
+        const: aspeed,ast2700-sd-controller
+then:
+  required:
+    - resets
+else:
+  properties:
+    resets: false
+
 examples:
   - |
     #include <dt-bindings/clock/aspeed-clock.h>