kernel

linux-6.8.1/Documentation/devicetree/bindings/clock/rockchip,rk3128-cru.yaml

@@ -0,0 +1,76 @@
+# SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/clock/rockchip,rk3128-cru.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Rockchip RK3126/RK3128 Clock and Reset Unit (CRU)
+
+maintainers:
+  - Elaine Zhang <zhangqing@rock-chips.com>
+  - Heiko Stuebner <heiko@sntech.de>
+
+description: |
+  The RK3126/RK3128 clock controller generates and supplies clock to various
+  controllers within the SoC and also implements a reset controller for SoC
+  peripherals.
+  Each clock is assigned an identifier and client nodes can use this identifier
+  to specify the clock which they consume. All available clocks are defined as
+  preprocessor macros in the dt-bindings/clock/rk3128-cru.h headers and can be
+  used in device tree sources. Similar macros exist for the reset sources in
+  these files.
+
+properties:
+  compatible:
+    enum:
+      - rockchip,rk3126-cru
+      - rockchip,rk3128-cru
+
+  reg:
+    maxItems: 1
+
+  "#clock-cells":
+    const: 1
+
+  "#reset-cells":
+    const: 1
+
+  clocks:
+    minItems: 1
+    maxItems: 3
+
+  clock-names:
+    minItems: 1
+    items:
+      - const: xin24m
+      - enum:
+          - ext_i2s
+          - gmac_clkin
+      - enum:
+          - ext_i2s
+          - gmac_clkin
+
+  rockchip,grf:
+    $ref: /schemas/types.yaml#/definitions/phandle
+    description:
+      Phandle to the syscon managing the "general register files" (GRF),
+      if missing pll rates are not changeable, due to the missing pll
+      lock status.
+
+required:
+  - compatible
+  - reg
+  - "#clock-cells"
+  - "#reset-cells"
+
+additionalProperties: false
+
+examples:
+  - |
+    cru: clock-controller@20000000 {
+      compatible = "rockchip,rk3128-cru";
+      reg = <0x20000000 0x1000>;
+      rockchip,grf = <&grf>;
+      #clock-cells = <1>;
+      #reset-cells = <1>;
+    };