dt-bindings: clock: Add Qcom SM8350 GPUCC bindings

Add device tree bindings for graphics clock controller for
Qualcomm Technology Inc's SM8350 SoCs.
Signed-off-by: Robert Foss <robert.foss@linaro.org>
Reviewed-by: Dmitry Baryshkov <dmityr.baryshkov@linaro.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20220706154337.2026269-2-robert.foss@linaro.org

Documentation/devicetree/bindings/clock/qcom,gpucc-sm8350.yaml

+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/clock/qcom,gpucc-sm8350.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm Graphics Clock & Reset Controller Binding
+
+maintainers:
+  - Robert Foss <robert.foss@linaro.org>
+
+description: |
+  Qualcomm graphics clock control module which supports the clocks, resets and
+  power domains on Qualcomm SoCs.
+
+  See also:
+    dt-bindings/clock/qcom,gpucc-sm8350.h
+
+properties:
+  compatible:
+    enum:
+      - qcom,sm8350-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-sm8350.h>
+    #include <dt-bindings/clock/qcom,rpmh.h>
+
+    soc {
+        #address-cells = <2>;
+        #size-cells = <2>;
+
+        clock-controller@3d90000 {
+            compatible = "qcom,sm8350-gpucc";
+            reg = <0 0x03d90000 0 0x9000>;
+            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>;
+        };
+    };
+...

include/dt-bindings/clock/qcom,gpucc-sm8350.h

+/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */
+/*
+ * Copyright (c) 2022, The Linux Foundation. All rights reserved.
+ */
+
+#ifndef _DT_BINDINGS_CLK_QCOM_GPU_CC_SM8350_H
+#define _DT_BINDINGS_CLK_QCOM_GPU_CC_SM8350_H
+
+/* GPU_CC clocks */
+#define GPU_CC_AHB_CLK			0
+#define GPU_CC_CB_CLK			1
+#define GPU_CC_CRC_AHB_CLK		2
+#define GPU_CC_CX_APB_CLK		3
+#define GPU_CC_CX_GMU_CLK		4
+#define GPU_CC_CX_QDSS_AT_CLK		5
+#define GPU_CC_CX_QDSS_TRIG_CLK		6
+#define GPU_CC_CX_QDSS_TSCTR_CLK	7
+#define GPU_CC_CX_SNOC_DVM_CLK		8
+#define GPU_CC_CXO_AON_CLK		9
+#define GPU_CC_CXO_CLK			10
+#define GPU_CC_FREQ_MEASURE_CLK		11
+#define GPU_CC_GMU_CLK_SRC		12
+#define GPU_CC_GX_GMU_CLK		13
+#define GPU_CC_GX_QDSS_TSCTR_CLK	14
+#define GPU_CC_GX_VSENSE_CLK		15
+#define GPU_CC_HLOS1_VOTE_GPU_SMMU_CLK	16
+#define GPU_CC_HUB_AHB_DIV_CLK_SRC	17
+#define GPU_CC_HUB_AON_CLK		18
+#define GPU_CC_HUB_CLK_SRC		19
+#define GPU_CC_HUB_CX_INT_CLK		20
+#define GPU_CC_HUB_CX_INT_DIV_CLK_SRC	21
+#define GPU_CC_MND1X_0_GFX3D_CLK	22
+#define GPU_CC_MND1X_1_GFX3D_CLK	23
+#define GPU_CC_PLL0			24
+#define GPU_CC_PLL1			25
+#define GPU_CC_SLEEP_CLK		26
+
+/* GPU_CC resets */
+#define GPUCC_GPU_CC_ACD_BCR		0
+#define GPUCC_GPU_CC_CB_BCR		1
+#define GPUCC_GPU_CC_CX_BCR		2
+#define GPUCC_GPU_CC_FAST_HUB_BCR	3
+#define GPUCC_GPU_CC_GFX3D_AON_BCR	4
+#define GPUCC_GPU_CC_GMU_BCR		5
+#define GPUCC_GPU_CC_GX_BCR		6
+#define GPUCC_GPU_CC_XO_BCR		7
+
+/* GPU_CC GDSCRs */
+#define GPU_CX_GDSC			0
+#define GPU_GX_GDSC			1
+
+#endif