dt-bindings: clock: Add qualcomm QCM2290 DISPCC bindings

Add device tree bindings for display clock controller on QCM2290 SoCs.
Signed-off-by: Loic Poulain <loic.poulain@linaro.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/1644432308-21099-1-git-send-email-loic.poulain@linaro.org

Documentation/devicetree/bindings/clock/qcom,qcm2290-dispcc.yaml

+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/clock/qcom,qcm2290-dispcc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm Display Clock & Reset Controller Binding for qcm2290
+
+maintainers:
+  - Loic Poulain <loic.poulain@linaro.org>
+
+description: |
+  Qualcomm display clock control module which supports the clocks, resets and
+  power domains on qcm2290.
+
+  See also dt-bindings/clock/qcom,dispcc-qcm2290.h.
+
+properties:
+  compatible:
+    const: qcom,qcm2290-dispcc
+
+  clocks:
+    items:
+      - description: Board XO source
+      - description: Board active-only XO source
+      - description: GPLL0 source from GCC
+      - description: GPLL0 div source from GCC
+      - description: Byte clock from DSI PHY
+      - description: Pixel clock from DSI PHY
+
+  clock-names:
+    items:
+      - const: bi_tcxo
+      - const: bi_tcxo_ao
+      - const: gcc_disp_gpll0_clk_src
+      - const: gcc_disp_gpll0_div_clk_src
+      - const: dsi0_phy_pll_out_byteclk
+      - const: dsi0_phy_pll_out_dsiclk
+
+  '#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,dispcc-qcm2290.h>
+    #include <dt-bindings/clock/qcom,gcc-qcm2290.h>
+    #include <dt-bindings/clock/qcom,rpmcc.h>
+    clock-controller@5f00000 {
+            compatible = "qcom,qcm2290-dispcc";
+            reg = <0x5f00000 0x20000>;
+            clocks = <&rpmcc RPM_SMD_XO_CLK_SRC>,
+                     <&rpmcc RPM_SMD_XO_A_CLK_SRC>,
+                     <&gcc GCC_DISP_GPLL0_CLK_SRC>,
+                     <&gcc GCC_DISP_GPLL0_DIV_CLK_SRC>,
+                     <&dsi0_phy 0>,
+                     <&dsi0_phy 1>;
+            clock-names = "bi_tcxo",
+                          "bi_tcxo_ao",
+                          "gcc_disp_gpll0_clk_src",
+                          "gcc_disp_gpll0_div_clk_src",
+                          "dsi0_phy_pll_out_byteclk",
+                          "dsi0_phy_pll_out_dsiclk";
+            #clock-cells = <1>;
+            #reset-cells = <1>;
+            #power-domain-cells = <1>;
+    };
+...

include/dt-bindings/clock/qcom,dispcc-qcm2290.h

+/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */
+/*
+ * Copyright (c) 2019, The Linux Foundation. All rights reserved.
+ */
+
+#ifndef _DT_BINDINGS_CLK_QCOM_DISP_CC_QCM2290_H
+#define _DT_BINDINGS_CLK_QCOM_DISP_CC_QCM2290_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_ESC0_CLK			7
+#define DISP_CC_MDSS_ESC0_CLK_SRC		8
+#define DISP_CC_MDSS_MDP_CLK			9
+#define DISP_CC_MDSS_MDP_CLK_SRC		10
+#define DISP_CC_MDSS_MDP_LUT_CLK		11
+#define DISP_CC_MDSS_NON_GDSC_AHB_CLK		12
+#define DISP_CC_MDSS_PCLK0_CLK			13
+#define DISP_CC_MDSS_PCLK0_CLK_SRC		14
+#define DISP_CC_MDSS_VSYNC_CLK			15
+#define DISP_CC_MDSS_VSYNC_CLK_SRC		16
+#define DISP_CC_SLEEP_CLK			17
+#define DISP_CC_SLEEP_CLK_SRC			18
+#define DISP_CC_XO_CLK				19
+#define DISP_CC_XO_CLK_SRC			20
+
+#define MDSS_GDSC				0
+
+#endif