Device-Tree bindings for Samsung Exynos7 SoC display controller (DECON)
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DECON (Display and Enhancement Controller) is the Display Controller for the
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Exynos7 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 "samsung,exynos7-decon";
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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: FIFO Level, VSYNC, LCD_SYSTEM. The interrupt specifier
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format depends on the interrupt controller used.
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- interrupt-names: should contain the interrupt names: "fifo", "vsync",
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"lcd_sys", in the same order as they were listed in the interrupts
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property.
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- pinctrl-0: pin control group to be used for this controller.
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- pinctrl-names: must contain a "default" entry.
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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_decon0", "aclk_decon0",
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"decon0_eclk", "decon0_vclk".
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- i80-if-timings: timing configuration for lcd i80 interface support.
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Optional Properties:
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- power-domains: a phandle to DECON power domain node.
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- display-timings: timing settings for DECON, as described in document [1].
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Can be used in case timings cannot be provided otherwise
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or to override timings provided by the panel.
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[1]: Documentation/devicetree/bindings/display/panel/display-timing.txt
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Example:
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SoC specific DT entry:
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decon@13930000 {
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compatible = "samsung,exynos7-decon";
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interrupt-parent = <&combiner>;
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reg = <0x13930000 0x1000>;
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interrupt-names = "lcd_sys", "vsync", "fifo";
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interrupts = <0 188 0>, <0 189 0>, <0 190 0>;
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clocks = <&clock_disp PCLK_DECON_INT>,
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<&clock_disp ACLK_DECON_INT>,
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<&clock_disp SCLK_DECON_INT_ECLK>,
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<&clock_disp SCLK_DECON_INT_EXTCLKPLL>;
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clock-names = "pclk_decon0", "aclk_decon0", "decon0_eclk",
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"decon0_vclk";
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status = "disabled";
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};
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Board specific DT entry:
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decon@13930000 {
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pinctrl-0 = <&lcd_clk &pwm1_out>;
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pinctrl-names = "default";
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status = "okay";
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};
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