dt-bindings: ata: Convert Broadcom SATA to YAML

Convert the Broadcom SATA3 AHCI controller Device Tree binding to YAML
to help with validation.
Acked-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20211217042001.479577-5-f.fainelli@gmail.com

Documentation/devicetree/bindings/ata/brcm,sata-brcm.txt

-* Broadcom SATA3 AHCI Controller
-
-SATA nodes are defined to describe on-chip Serial ATA controllers.
-Each SATA controller should have its own node.
-
-Required properties:
-- compatible         : should be one or more of
-			"brcm,bcm7216-ahci"
-			"brcm,bcm7425-ahci"
-			"brcm,bcm7445-ahci"
-			"brcm,bcm-nsp-ahci"
-			"brcm,sata3-ahci"
-			"brcm,bcm63138-ahci"
-- reg                : register mappings for AHCI and SATA_TOP_CTRL
-- reg-names          : "ahci" and "top-ctrl"
-- interrupts         : interrupt mapping for SATA IRQ
-
-Optional properties:
-
-- reset: for "brcm,bcm7216-ahci" must be a valid reset phandle
-  pointing to the RESCAL reset controller provider node.
-- reset-names: for "brcm,bcm7216-ahci", must be "rescal".
-
-Also see ahci-platform.txt.
-
-Example:
-
-	sata@f045a000 {
-		compatible = "brcm,bcm7445-ahci", "brcm,sata3-ahci";
-		reg = <0xf045a000 0xa9c>, <0xf0458040 0x24>;
-		reg-names = "ahci", "top-ctrl";
-		interrupts = <0 30 0>;
-		#address-cells = <1>;
-		#size-cells = <0>;
-
-		sata0: sata-port@0 {
-			reg = <0>;
-			phys = <&sata_phy 0>;
-		};
-
-		sata1: sata-port@1 {
-			reg = <1>;
-			phys = <&sata_phy 1>;
-		};
-	};

Documentation/devicetree/bindings/ata/brcm,sata-brcm.yaml

+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/ata/brcm,sata-brcm.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Broadcom SATA3 AHCI Controller
+
+description:
+  SATA nodes are defined to describe on-chip Serial ATA controllers.
+  Each SATA controller should have its own node.
+
+maintainers:
+  - Florian Fainelli <f.fainelli@gmail.com>
+
+allOf:
+  - $ref: sata-common.yaml#
+
+properties:
+  compatible:
+    oneOf:
+      - items:
+          - enum:
+              - brcm,bcm7216-ahci
+              - brcm,bcm7445-ahci
+              - brcm,bcm7425-ahci
+              - brcm,bcm63138-ahci
+          - const: brcm,sata3-ahci
+      - items:
+          - const: brcm,bcm-nsp-ahci
+
+  reg:
+    minItems: 2
+    maxItems: 2
+
+  reg-names:
+    items:
+      - const: ahci
+      - const: top-ctrl
+
+  interrupts:
+    maxItems: 1
+
+  dma-coherent: true
+
+if:
+  properties:
+    compatible:
+      contains:
+        enum:
+          - brcm,bcm7216-ahci
+          - brcm,bcm63138-ahci
+then:
+  properties:
+    resets:
+      maxItems: 1
+    reset-names:
+      enum:
+        - rescal
+        - ahci
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - "#address-cells"
+  - "#size-cells"
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    sata@f045a000 {
+        compatible = "brcm,bcm7445-ahci", "brcm,sata3-ahci";
+        reg = <0xf045a000 0xa9c>, <0xf0458040 0x24>;
+        reg-names = "ahci", "top-ctrl";
+        interrupts = <0 30 0>;
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        sata0: sata-port@0 {
+            reg = <0>;
+            phys = <&sata_phy 0>;
+        };
+
+        sata1: sata-port@1 {
+            reg = <1>;
+            phys = <&sata_phy 1>;
+        };
+    };