dt-bindings: clock: add QCOM SM6350 display clock bindings

Add device tree bindings for display clock controller for
Qualcomm Technology Inc's SM6350 SoC.
Signed-off-by: Konrad Dybcio <konrad.dybcio@somainline.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20220222011534.3502-1-konrad.dybcio@somainline.org

Documentation/devicetree/bindings/clock/qcom,dispcc-sm6350.yaml

+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/clock/qcom,dispcc-sm6350.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm Display Clock & Reset Controller Binding for SM6350
+
+maintainers:
+  - Konrad Dybcio <konrad.dybcio@somainline.org>
+
+description: |
+  Qualcomm display clock control module which supports the clocks, resets and
+  power domains on SM6350.
+
+  See also dt-bindings/clock/qcom,dispcc-sm6350.h.
+
+properties:
+  compatible:
+    const: qcom,sm6350-dispcc
+
+  clocks:
+    items:
+      - description: Board XO source
+      - description: GPLL0 source from GCC
+      - description: Byte clock from DSI PHY
+      - description: Pixel clock from DSI PHY
+      - description: Link clock from DP PHY
+      - description: VCO DIV clock from DP PHY
+
+  clock-names:
+    items:
+      - const: bi_tcxo
+      - const: gcc_disp_gpll0_clk
+      - const: dsi0_phy_pll_out_byteclk
+      - const: dsi0_phy_pll_out_dsiclk
+      - const: dp_phy_pll_link_clk
+      - const: dp_phy_pll_vco_div_clk
+
+  '#clock-cells':
+    const: 1
+
+  '#reset-cells':
+    const: 1
+
+  '#power-domain-cells':
+    const: 1
+
+  reg:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - clock-names
+  - '#clock-cells'
+  - '#reset-cells'
+  - '#power-domain-cells'
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/qcom,gcc-sm6350.h>
+    #include <dt-bindings/clock/qcom,rpmh.h>
+    clock-controller@af00000 {
+      compatible = "qcom,sm6350-dispcc";
+      reg = <0x0af00000 0x20000>;
+      clocks = <&rpmhcc RPMH_CXO_CLK>,
+               <&gcc GCC_DISP_GPLL0_CLK>,
+               <&dsi_phy 0>,
+               <&dsi_phy 1>,
+               <&dp_phy 0>,
+               <&dp_phy 1>;
+      clock-names = "bi_tcxo",
+                    "gcc_disp_gpll0_clk",
+                    "dsi0_phy_pll_out_byteclk",
+                    "dsi0_phy_pll_out_dsiclk",
+                    "dp_phy_pll_link_clk",
+                    "dp_phy_pll_vco_div_clk";
+      #clock-cells = <1>;
+      #reset-cells = <1>;
+      #power-domain-cells = <1>;
+    };
+...

include/dt-bindings/clock/qcom,dispcc-sm6350.h

+/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */
+/*
+ * Copyright (c) 2021, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2021, Konrad Dybcio <konrad.dybcio@somainline.org>
+ */
+
+#ifndef _DT_BINDINGS_CLK_QCOM_DISP_CC_SM6350_H
+#define _DT_BINDINGS_CLK_QCOM_DISP_CC_SM6350_H
+
+/* DISP_CC clocks */
+#define DISP_CC_PLL0				0
+#define DISP_CC_MDSS_AHB_CLK			1
+#define DISP_CC_MDSS_AHB_CLK_SRC		2
+#define DISP_CC_MDSS_BYTE0_CLK			3
+#define DISP_CC_MDSS_BYTE0_CLK_SRC		4
+#define DISP_CC_MDSS_BYTE0_DIV_CLK_SRC		5
+#define DISP_CC_MDSS_BYTE0_INTF_CLK		6
+#define DISP_CC_MDSS_DP_AUX_CLK			7
+#define DISP_CC_MDSS_DP_AUX_CLK_SRC		8
+#define DISP_CC_MDSS_DP_CRYPTO_CLK		9
+#define DISP_CC_MDSS_DP_CRYPTO_CLK_SRC		10
+#define DISP_CC_MDSS_DP_LINK_CLK		11
+#define DISP_CC_MDSS_DP_LINK_CLK_SRC		12
+#define DISP_CC_MDSS_DP_LINK_DIV_CLK_SRC	13
+#define DISP_CC_MDSS_DP_LINK_INTF_CLK		14
+#define DISP_CC_MDSS_DP_PIXEL_CLK		15
+#define DISP_CC_MDSS_DP_PIXEL_CLK_SRC		16
+#define DISP_CC_MDSS_ESC0_CLK			17
+#define DISP_CC_MDSS_ESC0_CLK_SRC		18
+#define DISP_CC_MDSS_MDP_CLK			19
+#define DISP_CC_MDSS_MDP_CLK_SRC		20
+#define DISP_CC_MDSS_MDP_LUT_CLK		21
+#define DISP_CC_MDSS_NON_GDSC_AHB_CLK		22
+#define DISP_CC_MDSS_PCLK0_CLK			23
+#define DISP_CC_MDSS_PCLK0_CLK_SRC		24
+#define DISP_CC_MDSS_ROT_CLK			25
+#define DISP_CC_MDSS_ROT_CLK_SRC		26
+#define DISP_CC_MDSS_RSCC_AHB_CLK		27
+#define DISP_CC_MDSS_RSCC_VSYNC_CLK		28
+#define DISP_CC_MDSS_VSYNC_CLK			29
+#define DISP_CC_MDSS_VSYNC_CLK_SRC		30
+#define DISP_CC_SLEEP_CLK			31
+#define DISP_CC_XO_CLK				32
+
+/* GDSCs */
+#define MDSS_GDSC				0
+
+#endif