1 Device-Tree bindings for Samsung SoC display controller (FIMD)
3 FIMD (Fully Interactive Mobile Display) is the Display Controller for the
4 Samsung series of SoCs which transfers the image data from a video memory
5 buffer to an external LCD interface.
8 - compatible: value should be one of the following
9 "samsung,s3c2443-fimd"; /* for S3C24XX SoCs */
10 "samsung,s3c6400-fimd"; /* for S3C64XX SoCs */
11 "samsung,s5pv210-fimd"; /* for S5PV210 SoC */
12 "samsung,exynos3250-fimd"; /* for Exynos3250/3472 SoCs */
13 "samsung,exynos4210-fimd"; /* for Exynos4 SoCs */
14 "samsung,exynos5250-fimd"; /* for Exynos5250 SoCs */
15 "samsung,exynos5420-fimd"; /* for Exynos5420/5422/5800 SoCs */
17 - reg: physical base address and length of the FIMD registers set.
19 - interrupts: should contain a list of all FIMD IP block interrupts in the
20 order: FIFO Level, VSYNC, LCD_SYSTEM. The interrupt specifier
21 format depends on the interrupt controller used.
23 - interrupt-names: should contain the interrupt names: "fifo", "vsync",
24 "lcd_sys", in the same order as they were listed in the interrupts
27 - pinctrl-0: pin control group to be used for this controller.
29 - pinctrl-names: must contain a "default" entry.
31 - clocks: must include clock specifiers corresponding to entries in the
34 - clock-names: list of clock names sorted in the same order as the clocks
35 property. Must contain "sclk_fimd" and "fimd".
38 - power-domains: a phandle to FIMD power domain node.
39 - samsung,invert-vden: video enable signal is inverted
40 - samsung,invert-vclk: video clock signal is inverted
41 - display-timings: timing settings for FIMD, as described in document [1].
42 Can be used in case timings cannot be provided otherwise
43 or to override timings provided by the panel.
44 - samsung,sysreg: handle to syscon used to control the system registers
45 - i80-if-timings: timing configuration for lcd i80 interface support.
46 - cs-setup: clock cycles for the active period of address signal is enabled
47 until chip select is enabled.
48 If not specified, the default value(0) will be used.
49 - wr-setup: clock cycles for the active period of CS signal is enabled until
50 write signal is enabled.
51 If not specified, the default value(0) will be used.
52 - wr-active: clock cycles for the active period of CS is enabled.
53 If not specified, the default value(1) will be used.
54 - wr-hold: clock cycles for the active period of CS is disabled until write
56 If not specified, the default value(0) will be used.
58 The parameters are defined as:
60 VCLK(internal) __|??????|_____|??????|_____|??????|_____|??????|_____|??
62 Address Output --:<XXXXXXXXXXX:XXXXXXXXXXXX:XXXXXXXXXXXX:XXXXXXXXXXXX:XX
65 Chip Select ???????????????|____________:____________:____________|??
66 | wr-setup+1 | | wr-hold+1 |
67 |<---------->| |<---------->|
68 Write Enable ????????????????????????????|____________|???????????????
71 Video Data ----------------------------<XXXXXXXXXXXXXXXXXXXXXXXXX>--
73 The device node can contain 'port' child nodes according to the bindings defined
74 in [2]. The following are properties specific to those nodes:
75 - reg: (required) port index, can be:
79 3 - for parallel output,
80 4 - for write-back interface
82 [1]: Documentation/devicetree/bindings/display/panel/display-timing.txt
83 [2]: Documentation/devicetree/bindings/media/video-interfaces.txt
87 SoC specific DT entry:
90 compatible = "samsung,exynos4210-fimd";
91 interrupt-parent = <&combiner>;
92 reg = <0x11c00000 0x20000>;
93 interrupt-names = "fifo", "vsync", "lcd_sys";
94 interrupts = <11 0>, <11 1>, <11 2>;
95 clocks = <&clock 140>, <&clock 283>;
96 clock-names = "sclk_fimd", "fimd";
97 power-domains = <&pd_lcd0>;
101 Board specific DT entry:
104 pinctrl-0 = <&lcd_clk &lcd_data24 &pwm1_out>;
105 pinctrl-names = "default";