diff options
Diffstat (limited to 'Documentation/devicetree/bindings/display/exynos/samsung-fimd.txt')
| -rw-r--r-- | Documentation/devicetree/bindings/display/exynos/samsung-fimd.txt | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/display/exynos/samsung-fimd.txt b/Documentation/devicetree/bindings/display/exynos/samsung-fimd.txt new file mode 100644 index 000000000000..27c3ce0db16a --- /dev/null +++ b/Documentation/devicetree/bindings/display/exynos/samsung-fimd.txt @@ -0,0 +1,110 @@ +Device-Tree bindings for Samsung SoC display controller (FIMD) + +FIMD (Fully Interactive Mobile Display) is the Display Controller for the +Samsung series of SoCs which transfers the image data from a video memory +buffer to an external LCD interface. + +Required properties: +- compatible: value should be one of the following + "samsung,s3c2443-fimd"; /* for S3C24XX SoCs */ + "samsung,s3c6400-fimd"; /* for S3C64XX SoCs */ + "samsung,s5pv210-fimd"; /* for S5PV210 SoC */ + "samsung,exynos3250-fimd"; /* for Exynos3250/3472 SoCs */ + "samsung,exynos4210-fimd"; /* for Exynos4 SoCs */ + "samsung,exynos4415-fimd"; /* for Exynos4415 SoC */ + "samsung,exynos5250-fimd"; /* for Exynos5 SoCs */ + +- reg: physical base address and length of the FIMD registers set. + +- interrupt-parent: should be the phandle of the fimd controller's + parent interrupt controller. + +- interrupts: should contain a list of all FIMD IP block interrupts in the + order: FIFO Level, VSYNC, LCD_SYSTEM. The interrupt specifier + format depends on the interrupt controller used. + +- interrupt-names: should contain the interrupt names: "fifo", "vsync", + "lcd_sys", in the same order as they were listed in the interrupts + property. + +- pinctrl-0: pin control group to be used for this controller. + +- pinctrl-names: must contain a "default" entry. + +- clocks: must include clock specifiers corresponding to entries in the + clock-names property. + +- clock-names: list of clock names sorted in the same order as the clocks + property. Must contain "sclk_fimd" and "fimd". + +Optional Properties: +- power-domains: a phandle to FIMD power domain node. +- samsung,invert-vden: video enable signal is inverted +- samsung,invert-vclk: video clock signal is inverted +- display-timings: timing settings for FIMD, as described in document [1]. + Can be used in case timings cannot be provided otherwise + or to override timings provided by the panel. +- samsung,sysreg: handle to syscon used to control the system registers +- i80-if-timings: timing configuration for lcd i80 interface support. + - cs-setup: clock cycles for the active period of address signal is enabled + until chip select is enabled. + If not specified, the default value(0) will be used. + - wr-setup: clock cycles for the active period of CS signal is enabled until + write signal is enabled. + If not specified, the default value(0) will be used. + - wr-active: clock cycles for the active period of CS is enabled. + If not specified, the default value(1) will be used. + - wr-hold: clock cycles for the active period of CS is disabled until write + signal is disabled. + If not specified, the default value(0) will be used. + + The parameters are defined as: + + VCLK(internal) __|??????|_____|??????|_____|??????|_____|??????|_____|?? + : : : : : + Address Output --:<XXXXXXXXXXX:XXXXXXXXXXXX:XXXXXXXXXXXX:XXXXXXXXXXXX:XX + | cs-setup+1 | : : : + |<---------->| : : : + Chip Select ???????????????|____________:____________:____________|?? + | wr-setup+1 | | wr-hold+1 | + |<---------->| |<---------->| + Write Enable ????????????????????????????|____________|??????????????? + | wr-active+1| + |<---------->| + Video Data ----------------------------<XXXXXXXXXXXXXXXXXXXXXXXXX>-- + +The device node can contain 'port' child nodes according to the bindings defined +in [2]. The following are properties specific to those nodes: +- reg: (required) port index, can be: + 0 - for CAMIF0 input, + 1 - for CAMIF1 input, + 2 - for CAMIF2 input, + 3 - for parallel output, + 4 - for write-back interface + +[1]: Documentation/devicetree/bindings/display/display-timing.txt +[2]: Documentation/devicetree/bindings/media/video-interfaces.txt + +Example: + +SoC specific DT entry: + + fimd@11c00000 { + compatible = "samsung,exynos4210-fimd"; + interrupt-parent = <&combiner>; + reg = <0x11c00000 0x20000>; + interrupt-names = "fifo", "vsync", "lcd_sys"; + interrupts = <11 0>, <11 1>, <11 2>; + clocks = <&clock 140>, <&clock 283>; + clock-names = "sclk_fimd", "fimd"; + power-domains = <&pd_lcd0>; + status = "disabled"; + }; + +Board specific DT entry: + + fimd@11c00000 { + pinctrl-0 = <&lcd_clk &lcd_data24 &pwm1_out>; + pinctrl-names = "default"; + status = "okay"; + }; |