linux-kernel - [PATCH V3 1/3] dt-bindings: clk: sprd: Add bindings for ums512 clock controller

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Date:   Mon, 18 Apr 2022 20:56:28 +0800
From:   Cixi Geng <gengcixi@...il.com>
To:     mturquette@...libre.com, sboyd@...nel.org, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, orsonzhai@...il.com,
        baolin.wang7@...il.com, zhang.lyra@...il.com
Cc:     linux-clk@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH V3 1/3] dt-bindings: clk: sprd: Add bindings for ums512 clock controller

From: Cixi Geng <cixi.geng1@...soc.com>

Add a new bindings to describe ums512 clock compatible string.

Signed-off-by: Cixi Geng <cixi.geng1@...soc.com>
---
 .../bindings/clock/sprd,ums512-clk.yaml       | 112 ++++++++++++++++++
 1 file changed, 112 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/clock/sprd,ums512-clk.yaml

diff --git a/Documentation/devicetree/bindings/clock/sprd,ums512-clk.yaml b/Documentation/devicetree/bindings/clock/sprd,ums512-clk.yaml
new file mode 100644
index 000000000000..89824d7c6be4
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/sprd,ums512-clk.yaml
@@ -0,0 +1,112 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+# Copyright 2022 Unisoc Inc.
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/clock/sprd,ums512-clk.yaml#"
+$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+
+title: UMS512 Clock Control Unit Device Tree Bindings
+
+maintainers:
+  - Orson Zhai <orsonzhai@...il.com>
+  - Baolin Wang <baolin.wang7@...il.com>
+  - Chunyan Zhang <zhang.lyra@...il.com>
+
+properties:
+  "#clock-cells":
+    const: 1
+
+  compatible:
+    oneOf:
+      - items:
+          - const: sprd,ums512-glbregs
+          - const: syscon
+          - const: simple-mfd
+      - items:
+          - enum:
+              - sprd,ums512-apahb-gate
+              - sprd,ums512-ap-clk
+              - sprd,ums512-aonapb-clk
+              - sprd,ums512-pmu-gate
+              - sprd,ums512-g0-pll
+              - sprd,ums512-g2-pll
+              - sprd,ums512-g3-pll
+              - sprd,ums512-gc-pll
+              - sprd,ums512-aon-gate
+              - sprd,ums512-audcpapb-gate
+              - sprd,ums512-audcpahb-gate
+              - sprd,ums512-gpu-clk
+              - sprd,ums512-mm-clk
+              - sprd,ums512-mm-gate-clk
+              - sprd,ums512-apapb-gate
+
+  clocks:
+    minItems: 1
+    description: |
+      The input parent clock(s) phandle for this clock, only list fixed
+      clocks which are declared in devicetree.
+
+  clock-names:
+    minItems: 1
+    items:
+      - const: ext-26m
+      - const: ext-32k
+      - const: ext-4m
+      - const: rco-100m
+
+  reg:
+    maxItems: 1
+
+required:
+  - compatible
+  - '#clock-cells'
+
+if:
+  properties:
+    compatible:
+      enum:
+        - sprd,ums512-ap-clk
+        - sprd,ums512-aonapb-clk
+        - sprd,ums512-mm-clk
+then:
+  required:
+    - reg
+
+else:
+  description: |
+    Other UMS512 clock nodes should be the child of a syscon node in
+    which compatible string should be:
+            "sprd,ums512-glbregs", "syscon", "simple-mfd"
+
+    The 'reg' property for the clock node is also required if there is a sub
+    range of registers for the clocks.
+
+additionalProperties: true
+
+examples:
+  - |
+    ap_clk: clock-controller@...00000 {
+      compatible = "sprd,ums512-ap-clk";
+      reg = <0x20200000 0x1000>;
+      clocks = <&ext_26m>;
+      clock-names = "ext-26m";
+      #clock-cells = <1>;
+    };
+
+  - |
+    ap_apb_regs: syscon@...00000 {
+      compatible = "sprd,ums512-glbregs", "syscon", "simple-mfd";
+      reg = <0x71000000 0x3000>;
+      #address-cells = <1>;
+      #size-cells = <1>;
+      #clock-cells = <1>;
+      ranges = <0 0x71000000 0x3000>;
+
+      apahb_gate: clock-controller@0 {
+        compatible = "sprd,ums512-apahb-gate";
+        reg = <0x0 0x2000>;
+        #clock-cells = <1>;
+      };
+    };
+
+...
-- 
2.25.1