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-Qualcomm Technologies, Inc. DPU KMS
-
-Description:
-
-Device tree bindings for MSM Mobile Display Subsytem(MDSS) that encapsulates
-sub-blocks like DPU display controller, DSI and DP interfaces etc.
-The DPU display controller is found in SDM845 SoC.
-
-MDSS:
-Required properties:
-- compatible: "qcom,sdm845-mdss"
-- reg: physical base address and length of contoller's registers.
-- reg-names: register region names. The following region is required:
- * "mdss"
-- power-domains: a power domain consumer specifier according to
- Documentation/devicetree/bindings/power/power_domain.txt
-- clocks: list of clock specifiers for clocks needed by the device.
-- clock-names: device clock names, must be in same order as clocks property.
- The following clocks are required:
- * "iface"
- * "bus"
- * "core"
-- interrupts: interrupt signal from MDSS.
-- interrupt-controller: identifies the node as an interrupt controller.
-- #interrupt-cells: specifies the number of cells needed to encode an interrupt
- source, should be 1.
-- iommus: phandle of iommu device node.
-- #address-cells: number of address cells for the MDSS children. Should be 1.
-- #size-cells: Should be 1.
-- ranges: parent bus address space is the same as the child bus address space.
-- interconnects : interconnect path specifier for MDSS according to
- Documentation/devicetree/bindings/interconnect/interconnect.txt. Should be
- 2 paths corresponding to 2 AXI ports.
-- interconnect-names : MDSS will have 2 port names to differentiate between the
- 2 interconnect paths defined with interconnect specifier.
-
-Optional properties:
-- assigned-clocks: list of clock specifiers for clocks needing rate assignment
-- assigned-clock-rates: list of clock frequencies sorted in the same order as
- the assigned-clocks property.
-
-MDP:
-Required properties:
-- compatible: "qcom,sdm845-dpu"
-- reg: physical base address and length of controller's registers.
-- reg-names : register region names. The following region is required:
- * "mdp"
- * "vbif"
-- clocks: list of clock specifiers for clocks needed by the device.
-- clock-names: device clock names, must be in same order as clocks property.
- The following clocks are required.
- * "bus"
- * "iface"
- * "core"
- * "vsync"
-- interrupts: interrupt line from DPU to MDSS.
-- ports: contains the list of output ports from DPU device. These ports connect
- to interfaces that are external to the DPU hardware, such as DSI, DP etc.
-
- Each output port contains an endpoint that describes how it is connected to an
- external interface. These are described by the standard properties documented
- here:
- Documentation/devicetree/bindings/graph.txt
- Documentation/devicetree/bindings/media/video-interfaces.txt
-
- Port 0 -> DPU_INTF1 (DSI1)
- Port 1 -> DPU_INTF2 (DSI2)
-
-Optional properties:
-- assigned-clocks: list of clock specifiers for clocks needing rate assignment
-- assigned-clock-rates: list of clock frequencies sorted in the same order as
- the assigned-clocks property.
-
-Example:
-
- mdss: mdss@ae00000 {
- compatible = "qcom,sdm845-mdss";
- reg = <0xae00000 0x1000>;
- reg-names = "mdss";
-
- power-domains = <&clock_dispcc 0>;
-
- clocks = <&gcc GCC_DISP_AHB_CLK>, <&gcc GCC_DISP_AXI_CLK>,
- <&clock_dispcc DISP_CC_MDSS_MDP_CLK>;
- clock-names = "iface", "bus", "core";
-
- assigned-clocks = <&clock_dispcc DISP_CC_MDSS_MDP_CLK>;
- assigned-clock-rates = <300000000>;
-
- interrupts = <GIC_SPI 83 IRQ_TYPE_LEVEL_HIGH>;
- interrupt-controller;
- #interrupt-cells = <1>;
-
- interconnects = <&rsc_hlos MASTER_MDP0 &rsc_hlos SLAVE_EBI1>,
- <&rsc_hlos MASTER_MDP1 &rsc_hlos SLAVE_EBI1>;
-
- interconnect-names = "mdp0-mem", "mdp1-mem";
-
- iommus = <&apps_iommu 0>;
-
- #address-cells = <2>;
- #size-cells = <1>;
- ranges = <0 0 0xae00000 0xb2008>;
-
- mdss_mdp: mdp@ae01000 {
- compatible = "qcom,sdm845-dpu";
- reg = <0 0x1000 0x8f000>, <0 0xb0000 0x2008>;
- reg-names = "mdp", "vbif";
-
- clocks = <&clock_dispcc DISP_CC_MDSS_AHB_CLK>,
- <&clock_dispcc DISP_CC_MDSS_AXI_CLK>,
- <&clock_dispcc DISP_CC_MDSS_MDP_CLK>,
- <&clock_dispcc DISP_CC_MDSS_VSYNC_CLK>;
- clock-names = "iface", "bus", "core", "vsync";
-
- assigned-clocks = <&clock_dispcc DISP_CC_MDSS_MDP_CLK>,
- <&clock_dispcc DISP_CC_MDSS_VSYNC_CLK>;
- assigned-clock-rates = <0 0 300000000 19200000>;
-
- interrupts = <0 IRQ_TYPE_LEVEL_HIGH>;
-
- ports {
- #address-cells = <1>;
- #size-cells = <0>;
-
- port@0 {
- reg = <0>;
- dpu_intf1_out: endpoint {
- remote-endpoint = <&dsi0_in>;
- };
- };
-
- port@1 {
- reg = <1>;
- dpu_intf2_out: endpoint {
- remote-endpoint = <&dsi1_in>;
- };
- };
- };
- };
- };