dt-bindings: clock: Add SC7280 DISPCC clock binding

Add device tree bindings for display clock controller subsystem for
Qualcomm Technology Inc's SC7280 SoCs.
Signed-off-by: Taniya Das <tdas@codeaurora.org>
Link: https://lore.kernel.org/r/1626189143-12957-3-git-send-email-tdas@codeaurora.orgReviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

Documentation/devicetree/bindings/clock/qcom,sc7280-dispcc.yaml

+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/clock/qcom,sc7280-dispcc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm Display Clock & Reset Controller Binding for SC7280
+
+maintainers:
+  - Taniya Das <tdas@codeaurora.org>
+
+description: |
+  Qualcomm display clock control module which supports the clocks, resets and
+  power domains on SC7280.
+
+  See also dt-bindings/clock/qcom,dispcc-sc7280.h.
+
+properties:
+  compatible:
+    const: qcom,sc7280-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
+      - description: Link clock from EDP PHY
+      - description: VCO DIV clock from EDP 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
+      - const: edp_phy_pll_link_clk
+      - const: edp_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-sc7280.h>
+    #include <dt-bindings/clock/qcom,rpmh.h>
+    clock-controller@af00000 {
+      compatible = "qcom,sc7280-dispcc";
+      reg = <0x0af00000 0x200000>;
+      clocks = <&rpmhcc RPMH_CXO_CLK>,
+               <&gcc GCC_DISP_GPLL0_CLK_SRC>,
+               <&dsi_phy 0>,
+               <&dsi_phy 1>,
+               <&dp_phy 0>,
+               <&dp_phy 1>,
+               <&edp_phy 0>,
+               <&edp_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",
+                    "edp_phy_pll_link_clk",
+                    "edp_phy_pll_vco_div_clk";
+      #clock-cells = <1>;
+      #reset-cells = <1>;
+      #power-domain-cells = <1>;
+    };
+...

include/dt-bindings/clock/qcom,dispcc-sc7280.h

+/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */
+/*
+ * Copyright (c) 2021, The Linux Foundation. All rights reserved.
+ */
+
+#ifndef _DT_BINDINGS_CLK_QCOM_DISP_CC_SC7280_H
+#define _DT_BINDINGS_CLK_QCOM_DISP_CC_SC7280_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_EDP_AUX_CLK			17
+#define DISP_CC_MDSS_EDP_AUX_CLK_SRC			18
+#define DISP_CC_MDSS_EDP_LINK_CLK			19
+#define DISP_CC_MDSS_EDP_LINK_CLK_SRC			20
+#define DISP_CC_MDSS_EDP_LINK_DIV_CLK_SRC		21
+#define DISP_CC_MDSS_EDP_LINK_INTF_CLK			22
+#define DISP_CC_MDSS_EDP_PIXEL_CLK			23
+#define DISP_CC_MDSS_EDP_PIXEL_CLK_SRC			24
+#define DISP_CC_MDSS_ESC0_CLK				25
+#define DISP_CC_MDSS_ESC0_CLK_SRC			26
+#define DISP_CC_MDSS_MDP_CLK				27
+#define DISP_CC_MDSS_MDP_CLK_SRC			28
+#define DISP_CC_MDSS_MDP_LUT_CLK			29
+#define DISP_CC_MDSS_NON_GDSC_AHB_CLK			30
+#define DISP_CC_MDSS_PCLK0_CLK				31
+#define DISP_CC_MDSS_PCLK0_CLK_SRC			32
+#define DISP_CC_MDSS_ROT_CLK				33
+#define DISP_CC_MDSS_ROT_CLK_SRC			34
+#define DISP_CC_MDSS_RSCC_AHB_CLK			35
+#define DISP_CC_MDSS_RSCC_VSYNC_CLK			36
+#define DISP_CC_MDSS_VSYNC_CLK				37
+#define DISP_CC_MDSS_VSYNC_CLK_SRC			38
+#define DISP_CC_SLEEP_CLK				39
+#define DISP_CC_XO_CLK					40
+
+/* DISP_CC power domains */
+#define DISP_CC_MDSS_CORE_GDSC				0
+
+#endif