[PATCH v3] dt-bindings: ata: Add UniPhier controller binding

[Kunihiko Hayashi]

Add UniPhier SATA controller compatible string to the platform binding.
This controller needs two or three reset controls.

Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@xxxxxxxxxxxxx>
---
 .../bindings/ata/ahci-platform.yaml           | 32 ++++++++++++++++---
 1 file changed, 27 insertions(+), 5 deletions(-)

Changes since v2:
- Add compatible strings to select property
- Add minItems and change maxItems for resets
- Move condition schema under allOf property
- Change resets to "required" for uniphier-*-ahci

Changes since v1:
- Restrict resets property changes with compatible strings
- Fix maxItems from two to three

diff --git a/Documentation/devicetree/bindings/ata/ahci-platform.yaml b/Documentation/devicetree/bindings/ata/ahci-platform.yaml
index 7dc2a2e8f598..4b2ee68097b8 100644
--- a/Documentation/devicetree/bindings/ata/ahci-platform.yaml
+++ b/Documentation/devicetree/bindings/ata/ahci-platform.yaml
@@ -30,12 +30,12 @@ select:
           - marvell,armada-3700-ahci
           - marvell,armada-8k-ahci
           - marvell,berlin2q-ahci
+          - socionext,uniphier-pro4-ahci
+          - socionext,uniphier-pxs2-ahci
+          - socionext,uniphier-pxs3-ahci
   required:
     - compatible
 
-allOf:
-  - $ref: "ahci-common.yaml#"
-
 properties:
   compatible:
     oneOf:
@@ -45,6 +45,9 @@ properties:
               - marvell,armada-8k-ahci
               - marvell,berlin2-ahci
               - marvell,berlin2q-ahci
+              - socionext,uniphier-pro4-ahci
+              - socionext,uniphier-pxs2-ahci
+              - socionext,uniphier-pxs3-ahci
           - const: generic-ahci
       - enum:
           - cavium,octeon-7130-ahci
@@ -67,14 +70,33 @@ properties:
     minItems: 1
     maxItems: 3
 
+  resets:
+    minItems: 1
+    maxItems: 3
+
   interrupts:
     maxItems: 1
 
   power-domains:
     maxItems: 1
 
-  resets:
-    maxItems: 1
+allOf:
+  - $ref: ahci-common.yaml#
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - socionext,uniphier-pro4-ahci
+              - socionext,uniphier-pxs2-ahci
+              - socionext,uniphier-pxs3-ahci
+    then:
+      properties:
+        resets:
+          minItems: 2
+          maxItems: 3
+      required:
+        - resets
 
 patternProperties:
   "^sata-port@[0-9a-f]+$":
-- 
2.25.1