dt-bindings: clock: qcom: add bindings for dispcc on SM8450

Add device tree bindings for the display clock controller on Qualcomm
SM8450 platform.
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20220908222850.3552050-2-dmitry.baryshkov@linaro.org

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

+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/clock/qcom,sm8450-dispcc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm Display Clock & Reset Controller for SM8450
+
+maintainers:
+  - Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
+
+description: |
+  Qualcomm display clock control module which supports the clocks, resets and
+  power domains on SM8450.
+
+  See also:
+    include/dt-bindings/clock/qcom,sm8450-dispcc.h
+
+properties:
+  compatible:
+    enum:
+      - qcom,sm8450-dispcc
+
+  clocks:
+    minItems: 3
+    items:
+      - description: Board XO source
+      - description: Board Always On XO source
+      - description: Display's AHB clock
+      - description: sleep clock
+      - description: Byte clock from DSI PHY0
+      - description: Pixel clock from DSI PHY0
+      - description: Byte clock from DSI PHY1
+      - description: Pixel clock from DSI PHY1
+      - description: Link clock from DP PHY0
+      - description: VCO DIV clock from DP PHY0
+      - description: Link clock from DP PHY1
+      - description: VCO DIV clock from DP PHY1
+      - description: Link clock from DP PHY2
+      - description: VCO DIV clock from DP PHY2
+      - description: Link clock from DP PHY3
+      - description: VCO DIV clock from DP PHY3
+
+  '#clock-cells':
+    const: 1
+
+  '#reset-cells':
+    const: 1
+
+  '#power-domain-cells':
+    const: 1
+
+  reg:
+    maxItems: 1
+
+  power-domains:
+    description:
+      A phandle and PM domain specifier for the MMCX power domain.
+    maxItems: 1
+
+  required-opps:
+    description:
+      A phandle to an OPP node describing required MMCX performance point.
+    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>
+    #include <dt-bindings/power/qcom-rpmpd.h>
+    clock-controller@af00000 {
+      compatible = "qcom,sm8450-dispcc";
+      reg = <0x0af00000 0x10000>;
+      clocks = <&rpmhcc RPMH_CXO_CLK>,
+               <&rpmhcc RPMH_CXO_CLK_A>,
+               <&gcc GCC_DISP_AHB_CLK>,
+               <&sleep_clk>,
+               <&dsi0_phy 0>,
+               <&dsi0_phy 1>,
+               <&dsi1_phy 0>,
+               <&dsi1_phy 1>;
+      #clock-cells = <1>;
+      #reset-cells = <1>;
+      #power-domain-cells = <1>;
+      power-domains = <&rpmhpd SM8450_MMCX>;
+      required-opps = <&rpmhpd_opp_low_svs>;
+    };
+...

include/dt-bindings/clock/qcom,sm8450-dispcc.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_DISP_CC_SM8450_H
+#define _DT_BINDINGS_CLK_QCOM_DISP_CC_SM8450_H
+
+/* DISP_CC clocks */
+#define DISP_CC_MDSS_AHB1_CLK					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_BYTE1_CLK					7
+#define DISP_CC_MDSS_BYTE1_CLK_SRC				8
+#define DISP_CC_MDSS_BYTE1_DIV_CLK_SRC				9
+#define DISP_CC_MDSS_BYTE1_INTF_CLK				10
+#define DISP_CC_MDSS_DPTX0_AUX_CLK				11
+#define DISP_CC_MDSS_DPTX0_AUX_CLK_SRC				12
+#define DISP_CC_MDSS_DPTX0_CRYPTO_CLK				13
+#define DISP_CC_MDSS_DPTX0_LINK_CLK				14
+#define DISP_CC_MDSS_DPTX0_LINK_CLK_SRC				15
+#define DISP_CC_MDSS_DPTX0_LINK_DIV_CLK_SRC			16
+#define DISP_CC_MDSS_DPTX0_LINK_INTF_CLK			17
+#define DISP_CC_MDSS_DPTX0_PIXEL0_CLK				18
+#define DISP_CC_MDSS_DPTX0_PIXEL0_CLK_SRC			19
+#define DISP_CC_MDSS_DPTX0_PIXEL1_CLK				20
+#define DISP_CC_MDSS_DPTX0_PIXEL1_CLK_SRC			21
+#define DISP_CC_MDSS_DPTX0_USB_ROUTER_LINK_INTF_CLK		22
+#define DISP_CC_MDSS_DPTX1_AUX_CLK				23
+#define DISP_CC_MDSS_DPTX1_AUX_CLK_SRC				24
+#define DISP_CC_MDSS_DPTX1_CRYPTO_CLK				25
+#define DISP_CC_MDSS_DPTX1_LINK_CLK				26
+#define DISP_CC_MDSS_DPTX1_LINK_CLK_SRC				27
+#define DISP_CC_MDSS_DPTX1_LINK_DIV_CLK_SRC			28
+#define DISP_CC_MDSS_DPTX1_LINK_INTF_CLK			29
+#define DISP_CC_MDSS_DPTX1_PIXEL0_CLK				30
+#define DISP_CC_MDSS_DPTX1_PIXEL0_CLK_SRC			31
+#define DISP_CC_MDSS_DPTX1_PIXEL1_CLK				32
+#define DISP_CC_MDSS_DPTX1_PIXEL1_CLK_SRC			33
+#define DISP_CC_MDSS_DPTX1_USB_ROUTER_LINK_INTF_CLK		34
+#define DISP_CC_MDSS_DPTX2_AUX_CLK				35
+#define DISP_CC_MDSS_DPTX2_AUX_CLK_SRC				36
+#define DISP_CC_MDSS_DPTX2_CRYPTO_CLK				37
+#define DISP_CC_MDSS_DPTX2_LINK_CLK				38
+#define DISP_CC_MDSS_DPTX2_LINK_CLK_SRC				39
+#define DISP_CC_MDSS_DPTX2_LINK_DIV_CLK_SRC			40
+#define DISP_CC_MDSS_DPTX2_LINK_INTF_CLK			41
+#define DISP_CC_MDSS_DPTX2_PIXEL0_CLK				42
+#define DISP_CC_MDSS_DPTX2_PIXEL0_CLK_SRC			43
+#define DISP_CC_MDSS_DPTX2_PIXEL1_CLK				44
+#define DISP_CC_MDSS_DPTX2_PIXEL1_CLK_SRC			45
+#define DISP_CC_MDSS_DPTX3_AUX_CLK				46
+#define DISP_CC_MDSS_DPTX3_AUX_CLK_SRC				47
+#define DISP_CC_MDSS_DPTX3_CRYPTO_CLK				48
+#define DISP_CC_MDSS_DPTX3_LINK_CLK				49
+#define DISP_CC_MDSS_DPTX3_LINK_CLK_SRC				50
+#define DISP_CC_MDSS_DPTX3_LINK_DIV_CLK_SRC			51
+#define DISP_CC_MDSS_DPTX3_LINK_INTF_CLK			52
+#define DISP_CC_MDSS_DPTX3_PIXEL0_CLK				53
+#define DISP_CC_MDSS_DPTX3_PIXEL0_CLK_SRC			54
+#define DISP_CC_MDSS_ESC0_CLK					55
+#define DISP_CC_MDSS_ESC0_CLK_SRC				56
+#define DISP_CC_MDSS_ESC1_CLK					57
+#define DISP_CC_MDSS_ESC1_CLK_SRC				58
+#define DISP_CC_MDSS_MDP1_CLK					59
+#define DISP_CC_MDSS_MDP_CLK					60
+#define DISP_CC_MDSS_MDP_CLK_SRC				61
+#define DISP_CC_MDSS_MDP_LUT1_CLK				62
+#define DISP_CC_MDSS_MDP_LUT_CLK				63
+#define DISP_CC_MDSS_NON_GDSC_AHB_CLK				64
+#define DISP_CC_MDSS_PCLK0_CLK					65
+#define DISP_CC_MDSS_PCLK0_CLK_SRC				66
+#define DISP_CC_MDSS_PCLK1_CLK					67
+#define DISP_CC_MDSS_PCLK1_CLK_SRC				68
+#define DISP_CC_MDSS_ROT1_CLK					69
+#define DISP_CC_MDSS_ROT_CLK					70
+#define DISP_CC_MDSS_ROT_CLK_SRC				71
+#define DISP_CC_MDSS_RSCC_AHB_CLK				72
+#define DISP_CC_MDSS_RSCC_VSYNC_CLK				73
+#define DISP_CC_MDSS_VSYNC1_CLK					74
+#define DISP_CC_MDSS_VSYNC_CLK					75
+#define DISP_CC_MDSS_VSYNC_CLK_SRC				76
+#define DISP_CC_PLL0						77
+#define DISP_CC_PLL1						78
+#define DISP_CC_SLEEP_CLK					79
+#define DISP_CC_SLEEP_CLK_SRC					80
+#define DISP_CC_XO_CLK						81
+#define DISP_CC_XO_CLK_SRC					82
+
+/* DISP_CC resets */
+#define DISP_CC_MDSS_CORE_BCR					0
+#define DISP_CC_MDSS_CORE_INT2_BCR				1
+#define DISP_CC_MDSS_RSCC_BCR					2
+
+/* DISP_CC GDSCR */
+#define MDSS_GDSC				0
+#define MDSS_INT2_GDSC				1
+
+#endif