[PATCH v4 2/5] dt-bindings: ata: dwc-ahci: add Rockchip RK3588

[Sebastian Reichel]

This adds Rockchip RK3588 AHCI binding. In order to narrow down the
allowed clocks without bloating the generic binding, the description
of Rockchip's AHCI controllers has been moved to its own file.

Signed-off-by: Sebastian Reichel <sebastian.reichel at collabora.com>
---
 .../bindings/ata/rockchip,dwc-ahci.yaml       | 124 ++++++++++++++++++
 .../bindings/ata/snps,dwc-ahci.yaml           |  13 +-
 2 files changed, 133 insertions(+), 4 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/ata/rockchip,dwc-ahci.yaml

diff --git a/Documentation/devicetree/bindings/ata/rockchip,dwc-ahci.yaml b/Documentation/devicetree/bindings/ata/rockchip,dwc-ahci.yaml
new file mode 100644
index 000000000000..b5e5767d8698
--- /dev/null
+++ b/Documentation/devicetree/bindings/ata/rockchip,dwc-ahci.yaml
@@ -0,0 +1,124 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/ata/rockchip,dwc-ahci.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Synopsys DWC AHCI SATA controller for Rockchip devices
+
+maintainers:
+  - Serge Semin <fancer.lancer at gmail.com>
+
+description:
+  This document defines device tree bindings for the Synopsys DWC
+  implementation of the AHCI SATA controller found in Rockchip
+  devices.
+
+select:
+  properties:
+    compatible:
+      contains:
+        enum:
+          - rockchip,rk3568-dwc-ahci
+          - rockchip,rk3588-dwc-ahci
+  required:
+    - compatible
+
+properties:
+  compatible:
+    items:
+      - enum:
+          - rockchip,rk3568-dwc-ahci
+          - rockchip,rk3588-dwc-ahci
+      - const: snps,dwc-ahci
+
+  ports-implemented:
+    const: 1
+
+  sata-port at 0:
+    $ref: /schemas/ata/snps,dwc-ahci-common.yaml#/$defs/dwc-ahci-port
+
+    properties:
+      reg:
+        const: 0
+
+    unevaluatedProperties: false
+
+patternProperties:
+  "^sata-port@[1-9a-e]$": false
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - clocks
+  - clock-names
+  - ports-implemented
+
+allOf:
+  - $ref: snps,dwc-ahci-common.yaml#
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - rockchip,rk3588-dwc-ahci
+    then:
+      properties:
+        clocks:
+          maxItems: 5
+        clock-names:
+          items:
+            - const: sata
+            - const: pmalive
+            - const: rxoob
+            - const: ref
+            - const: asic
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - rockchip,rk3568-dwc-ahci
+    then:
+      properties:
+        clocks:
+          maxItems: 3
+        clock-names:
+          items:
+            - const: sata
+            - const: pmalive
+            - const: rxoob
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/rockchip,rk3588-cru.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    #include <dt-bindings/ata/ahci.h>
+    #include <dt-bindings/phy/phy.h>
+
+    sata at fe210000 {
+      compatible = "rockchip,rk3588-dwc-ahci", "snps,dwc-ahci";
+      reg = <0xfe210000 0x1000>;
+      clocks = <&cru ACLK_SATA0>, <&cru CLK_PMALIVE0>,
+               <&cru CLK_RXOOB0>, <&cru CLK_PIPEPHY0_REF>,
+               <&cru CLK_PIPEPHY0_PIPE_ASIC_G>;
+      clock-names = "sata", "pmalive", "rxoob", "ref", "asic";
+      interrupts = <GIC_SPI 273 IRQ_TYPE_LEVEL_HIGH 0>;
+      ports-implemented = <0x1>;
+      #address-cells = <1>;
+      #size-cells = <0>;
+
+      sata-port at 0 {
+        reg = <0>;
+        hba-port-cap = <HBA_PORT_FBSCP>;
+        phys = <&combphy0_ps PHY_TYPE_SATA>;
+        phy-names = "sata-phy";
+        snps,rx-ts-max = <32>;
+        snps,tx-ts-max = <32>;
+      };
+    };
+
+...
diff --git a/Documentation/devicetree/bindings/ata/snps,dwc-ahci.yaml b/Documentation/devicetree/bindings/ata/snps,dwc-ahci.yaml
index 5afa4b57ce20..4c848fcb5a5d 100644
--- a/Documentation/devicetree/bindings/ata/snps,dwc-ahci.yaml
+++ b/Documentation/devicetree/bindings/ata/snps,dwc-ahci.yaml
@@ -13,6 +13,15 @@ description:
   This document defines device tree bindings for the generic Synopsys DWC
   implementation of the AHCI SATA controller.
 
+select:
+  properties:
+    compatible:
+      enum:
+        - snps,dwc-ahci
+        - snps,spear-ahci
+  required:
+    - compatible
+
 allOf:
   - $ref: snps,dwc-ahci-common.yaml#
 
@@ -23,10 +32,6 @@ properties:
         const: snps,dwc-ahci
       - description: SPEAr1340 AHCI SATA device
         const: snps,spear-ahci
-      - description: Rockhip RK3568 AHCI controller
-        items:
-          - const: rockchip,rk3568-dwc-ahci
-          - const: snps,dwc-ahci
 
 patternProperties:
   "^sata-port@[0-9a-e]$":
-- 
2.39.2