67 lines
2.4 KiB
Plaintext
67 lines
2.4 KiB
Plaintext
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Device-Tree bindings for Samsung Exynos SoC display controller (DECON)
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DECON (Display and Enhancement Controller) is the Display Controller for the
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Exynos series of SoCs which transfers the image data from a video memory
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buffer to an external LCD interface.
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Required properties:
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- compatible: value should be one of:
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"samsung,exynos5433-decon", "samsung,exynos5433-decon-tv";
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- reg: physical base address and length of the DECON registers set.
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- interrupts: should contain a list of all DECON IP block interrupts in the
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order: VSYNC, LCD_SYSTEM. The interrupt specifier format
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depends on the interrupt controller used.
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- interrupt-names: should contain the interrupt names: "vsync", "lcd_sys"
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in the same order as they were listed in the interrupts
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property.
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- clocks: must include clock specifiers corresponding to entries in the
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clock-names property.
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- clock-names: list of clock names sorted in the same order as the clocks
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property. Must contain "pclk", "aclk_decon", "aclk_smmu_decon0x",
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"aclk_xiu_decon0x", "pclk_smmu_decon0x", clk_decon_vclk",
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"sclk_decon_eclk"
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- ports: contains a port which is connected to mic node. address-cells and
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size-cells must 1 and 0, respectively.
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- port: contains an endpoint node which is connected to the endpoint in the mic
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node. The reg value muset be 0.
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- i80-if-timings: specify whether the panel which is connected to decon uses
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i80 lcd interface or mipi video interface. This node contains
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no timing information as that of fimd does. Because there is
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no register in decon to specify i80 interface timing value,
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it is not needed, but make it remain to use same kind of node
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in fimd and exynos7 decon.
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Example:
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SoC specific DT entry:
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decon: decon@13800000 {
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compatible = "samsung,exynos5433-decon";
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reg = <0x13800000 0x2104>;
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clocks = <&cmu_disp CLK_ACLK_DECON>, <&cmu_disp CLK_ACLK_SMMU_DECON0X>,
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<&cmu_disp CLK_ACLK_XIU_DECON0X>,
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<&cmu_disp CLK_PCLK_SMMU_DECON0X>,
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<&cmu_disp CLK_SCLK_DECON_VCLK>,
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<&cmu_disp CLK_SCLK_DECON_ECLK>;
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clock-names = "aclk_decon", "aclk_smmu_decon0x", "aclk_xiu_decon0x",
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"pclk_smmu_decon0x", "sclk_decon_vclk", "sclk_decon_eclk";
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interrupt-names = "vsync", "lcd_sys";
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interrupts = <0 202 0>, <0 203 0>;
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ports {
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#address-cells = <1>;
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#size-cells = <0>;
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port@0 {
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reg = <0>;
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decon_to_mic: endpoint {
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remote-endpoint = <&mic_to_decon>;
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};
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};
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};
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};
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Board specific DT entry:
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&decon {
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i80-if-timings {
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};
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};
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