dt-bindings: clock: Add Qcom SM8450 GPUCC

Add device tree bindings for the graphics clock controller on Qualcomm
Technology Inc's SM8450 SoCs.

Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230517-topic-waipio-gpucc-v1-1-4f40e282af1d@linaro.org

Documentation/devicetree/bindings/clock/qcom,sm8450-gpucc.yaml

@@ -0,0 +1,73 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/clock/qcom,sm8450-gpucc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm Graphics Clock & Reset Controller on SM8450
+
+maintainers:
+  - Konrad Dybcio <konrad.dybcio@linaro.org>
+
+description: |
+  Qualcomm graphics clock control module provides the clocks, resets and power
+  domains on Qualcomm SoCs.
+
+  See also::
+    include/dt-bindings/clock/qcom,sm8450-gpucc.h
+    include/dt-bindings/reset/qcom,sm8450-gpucc.h
+
+properties:
+  compatible:
+    enum:
+      - qcom,sm8450-gpucc
+
+  clocks:
+    items:
+      - description: Board XO source
+      - description: GPLL0 main branch source
+      - description: GPLL0 div branch source
+
+  '#clock-cells':
+    const: 1
+
+  '#reset-cells':
+    const: 1
+
+  '#power-domain-cells':
+    const: 1
+
+  reg:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - '#clock-cells'
+  - '#reset-cells'
+  - '#power-domain-cells'
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/qcom,gcc-sm8450.h>
+    #include <dt-bindings/clock/qcom,rpmh.h>
+
+    soc {
+        #address-cells = <2>;
+        #size-cells = <2>;
+
+        clock-controller@3d90000 {
+            compatible = "qcom,sm8450-gpucc";
+            reg = <0 0x03d90000 0 0xa000>;
+            clocks = <&rpmhcc RPMH_CXO_CLK>,
+                     <&gcc GCC_GPU_GPLL0_CLK_SRC>,
+                     <&gcc GCC_GPU_GPLL0_DIV_CLK_SRC>;
+            #clock-cells = <1>;
+            #reset-cells = <1>;
+            #power-domain-cells = <1>;
+        };
+    };
+...