Based on kernel version 4.3. Page generated on 2015-11-02 12:47 EST.
1 Device-Tree bindings for Samsung Exynos7 SoC display controller (DECON) 2 3 DECON (Display and Enhancement Controller) is the Display Controller for the 4 Exynos7 series of SoCs which transfers the image data from a video memory 5 buffer to an external LCD interface. 6 7 Required properties: 8 - compatible: value should be "samsung,exynos7-decon"; 9 10 - reg: physical base address and length of the DECON registers set. 11 12 - interrupt-parent: should be the phandle of the decon controller's 13 parent interrupt controller. 14 15 - interrupts: should contain a list of all DECON IP block interrupts in the 16 order: FIFO Level, VSYNC, LCD_SYSTEM. The interrupt specifier 17 format depends on the interrupt controller used. 18 19 - interrupt-names: should contain the interrupt names: "fifo", "vsync", 20 "lcd_sys", in the same order as they were listed in the interrupts 21 property. 22 23 - pinctrl-0: pin control group to be used for this controller. 24 25 - pinctrl-names: must contain a "default" entry. 26 27 - clocks: must include clock specifiers corresponding to entries in the 28 clock-names property. 29 30 - clock-names: list of clock names sorted in the same order as the clocks 31 property. Must contain "pclk_decon0", "aclk_decon0", 32 "decon0_eclk", "decon0_vclk". 33 - i80-if-timings: timing configuration for lcd i80 interface support. 34 35 Optional Properties: 36 - samsung,power-domain: a phandle to DECON power domain node. 37 - display-timings: timing settings for DECON, as described in document [1]. 38 Can be used in case timings cannot be provided otherwise 39 or to override timings provided by the panel. 40 41 [1]: Documentation/devicetree/bindings/video/display-timing.txt 42 43 Example: 44 45 SoC specific DT entry: 46 47 decon@13930000 { 48 compatible = "samsung,exynos7-decon"; 49 interrupt-parent = <&combiner>; 50 reg = <0x13930000 0x1000>; 51 interrupt-names = "lcd_sys", "vsync", "fifo"; 52 interrupts = <0 188 0>, <0 189 0>, <0 190 0>; 53 clocks = <&clock_disp PCLK_DECON_INT>, 54 <&clock_disp ACLK_DECON_INT>, 55 <&clock_disp SCLK_DECON_INT_ECLK>, 56 <&clock_disp SCLK_DECON_INT_EXTCLKPLL>; 57 clock-names = "pclk_decon0", "aclk_decon0", "decon0_eclk", 58 "decon0_vclk"; 59 status = "disabled"; 60 }; 61 62 Board specific DT entry: 63 64 decon@13930000 { 65 pinctrl-0 = <&lcd_clk &pwm1_out>; 66 pinctrl-names = "default"; 67 status = "okay"; 68 };