From 69e32a7070fb1a84eff77c49905d0c85c6e0260b Mon Sep 17 00:00:00 2001
From: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Date: Thu, 23 Feb 2023 00:59:06 +0900
Subject: [PATCH] dt-bindings: ata: Add UniPhier controller binding

Add UniPhier SATA controller compatible string to the platform binding.
This controller needs three reset controls for Pro4 SoC, or two reset
controls for PXs2 and PXs3 SoCs.

Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
---
 .../bindings/ata/ahci-platform.yaml           | 49 +++++++++++++++++--
 1 file changed, 45 insertions(+), 4 deletions(-)

diff --git a/Documentation/devicetree/bindings/ata/ahci-platform.yaml b/Documentation/devicetree/bindings/ata/ahci-platform.yaml
index 7dc2a2e8f598b..358617115bb8e 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
@@ -74,7 +77,8 @@ properties:
     maxItems: 1
 
   resets:
-    maxItems: 1
+    minItems: 1
+    maxItems: 3
 
 patternProperties:
   "^sata-port@[0-9a-f]+$":
@@ -91,6 +95,43 @@ required:
   - reg
   - interrupts
 
+allOf:
+  - $ref: ahci-common.yaml#
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: socionext,uniphier-pro4-ahci
+    then:
+      properties:
+        resets:
+          items:
+            - description: reset line for the parent
+            - description: reset line for the glue logic
+            - description: reset line for the controller
+      required:
+        - resets
+    else:
+      if:
+        properties:
+          compatible:
+            contains:
+              enum:
+                - socionext,uniphier-pxs2-ahci
+                - socionext,uniphier-pxs3-ahci
+      then:
+        properties:
+          resets:
+            items:
+              - description: reset for the glue logic
+              - description: reset for the controller
+        required:
+          - resets
+      else:
+        properties:
+          resets:
+            maxItems: 1
+
 unevaluatedProperties: false
 
 examples:
-- 
2.39.5