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authorJosé Pekkarinen <jose.pekkarinen@nokia.com>2016-04-11 10:41:07 +0300
committerJosé Pekkarinen <jose.pekkarinen@nokia.com>2016-04-13 08:17:18 +0300
commite09b41010ba33a20a87472ee821fa407a5b8da36 (patch)
treed10dc367189862e7ca5c592f033dc3726e1df4e3 /kernel/Documentation/devicetree/bindings/video/samsung-fimd.txt
parentf93b97fd65072de626c074dbe099a1fff05ce060 (diff)
These changes are the raw update to linux-4.4.6-rt14. Kernel sources
are taken from kernel.org, and rt patch from the rt wiki download page. During the rebasing, the following patch collided: Force tick interrupt and get rid of softirq magic(I70131fb85). Collisions have been removed because its logic was found on the source already. Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769 Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>
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-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/video/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";
- };