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,exynos4415-fimd"; /* for Exynos4415 SoC */
15 "samsung,exynos5250-fimd"; /* for Exynos5 SoCs */
17 - reg: physical base address and length of the FIMD registers set.
19 - interrupt-parent: should be the phandle of the fimd controller's
20 parent interrupt controller.
22 - interrupts: should contain a list of all FIMD IP block interrupts in the
23 order: FIFO Level, VSYNC, LCD_SYSTEM. The interrupt specifier
24 format depends on the interrupt controller used.
26 - interrupt-names: should contain the interrupt names: "fifo", "vsync",
27 "lcd_sys", in the same order as they were listed in the interrupts
30 - pinctrl-0: pin control group to be used for this controller.
32 - pinctrl-names: must contain a "default" entry.
34 - clocks: must include clock specifiers corresponding to entries in the
37 - clock-names: list of clock names sorted in the same order as the clocks
38 property. Must contain "sclk_fimd" and "fimd".
41 - power-domains: a phandle to FIMD power domain node.
42 - samsung,invert-vden: video enable signal is inverted
43 - samsung,invert-vclk: video clock signal is inverted
44 - display-timings: timing settings for FIMD, as described in document [1].
45 Can be used in case timings cannot be provided otherwise
46 or to override timings provided by the panel.
47 - samsung,sysreg: handle to syscon used to control the system registers
48 - i80-if-timings: timing configuration for lcd i80 interface support.
49 - cs-setup: clock cycles for the active period of address signal is enabled
50 until chip select is enabled.
51 If not specified, the default value(0) will be used.
52 - wr-setup: clock cycles for the active period of CS signal is enabled until
53 write signal is enabled.
54 If not specified, the default value(0) will be used.
55 - wr-active: clock cycles for the active period of CS is enabled.
56 If not specified, the default value(1) will be used.
57 - wr-hold: clock cycles for the active period of CS is disabled until write
59 If not specified, the default value(0) will be used.
61 The parameters are defined as:
63 VCLK(internal) __|??????|_____|??????|_____|??????|_____|??????|_____|??
65 Address Output --:<XXXXXXXXXXX:XXXXXXXXXXXX:XXXXXXXXXXXX:XXXXXXXXXXXX:XX
68 Chip Select ???????????????|____________:____________:____________|??
69 | wr-setup+1 | | wr-hold+1 |
70 |<---------->| |<---------->|
71 Write Enable ????????????????????????????|____________|???????????????
74 Video Data ----------------------------<XXXXXXXXXXXXXXXXXXXXXXXXX>--
76 The device node can contain 'port' child nodes according to the bindings defined
77 in [2]. The following are properties specific to those nodes:
78 - reg: (required) port index, can be:
82 3 - for parallel output,
83 4 - for write-back interface
85 [1]: Documentation/devicetree/bindings/video/display-timing.txt
86 [2]: Documentation/devicetree/bindings/media/video-interfaces.txt
90 SoC specific DT entry:
93 compatible = "samsung,exynos4210-fimd";
94 interrupt-parent = <&combiner>;
95 reg = <0x11c00000 0x20000>;
96 interrupt-names = "fifo", "vsync", "lcd_sys";
97 interrupts = <11 0>, <11 1>, <11 2>;
98 clocks = <&clock 140>, <&clock 283>;
99 clock-names = "sclk_fimd", "fimd";
100 power-domains = <&pd_lcd0>;
104 Board specific DT entry:
107 pinctrl-0 = <&lcd_clk &lcd_data24 &pwm1_out>;
108 pinctrl-names = "default";