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| author | Andrzej Hajda <a.hajda@samsung.com> | 2014-03-25 13:10:34 +0100 |
|---|---|---|
| committer | Inki Dae <daeinki@gmail.com> | 2014-04-04 21:24:48 +0900 |
| commit | 88072c39edff2f6e171995e77d1ebeee8e7017d9 (patch) | |
| tree | fbffeb0ce42b6e7114341dfaee94e3e820978cca /Documentation/devicetree | |
| parent | 86f05ae826aa1f9424f8e80b822f119e7234641e (diff) | |
| download | linux-88072c39edff2f6e171995e77d1ebeee8e7017d9.tar.gz linux-88072c39edff2f6e171995e77d1ebeee8e7017d9.tar.bz2 linux-88072c39edff2f6e171995e77d1ebeee8e7017d9.zip | |
panel/ld9040: add DT bindings
The patch adds bindings for ld9040 panel.
Bindings describe panel resources, boot delays,
display timings and physical size.
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Diffstat (limited to 'Documentation/devicetree')
| -rw-r--r-- | Documentation/devicetree/bindings/panel/samsung,ld9040.txt | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/panel/samsung,ld9040.txt b/Documentation/devicetree/bindings/panel/samsung,ld9040.txt new file mode 100644 index 000000000000..07c36c3f7b52 --- /dev/null +++ b/Documentation/devicetree/bindings/panel/samsung,ld9040.txt @@ -0,0 +1,66 @@ +Samsung LD9040 AMOLED LCD parallel RGB panel with SPI control bus + +Required properties: + - compatible: "samsung,ld9040" + - reg: address of the panel on SPI bus + - vdd3-supply: core voltage supply + - vci-supply: voltage supply for analog circuits + - reset-gpios: a GPIO spec for the reset pin + - display-timings: timings for the connected panel according to [1] + +The panel must obey rules for SPI slave device specified in document [2]. + +Optional properties: + - power-on-delay: delay after turning regulators on [ms] + - reset-delay: delay after reset sequence [ms] + - panel-width-mm: physical panel width [mm] + - panel-height-mm: physical panel height [mm] + +The device node can contain one 'port' child node with one child +'endpoint' node, according to the bindings defined in [3]. This +node should describe panel's video bus. + +[1]: Documentation/devicetree/bindings/video/display-timing.txt +[2]: Documentation/devicetree/bindings/spi/spi-bus.txt +[3]: Documentation/devicetree/bindings/media/video-interfaces.txt + +Example: + + lcd@0 { + compatible = "samsung,ld9040"; + reg = <0>; + vdd3-supply = <&ldo7_reg>; + vci-supply = <&ldo17_reg>; + reset-gpios = <&gpy4 5 0>; + spi-max-frequency = <1200000>; + spi-cpol; + spi-cpha; + power-on-delay = <10>; + reset-delay = <10>; + panel-width-mm = <90>; + panel-height-mm = <154>; + + display-timings { + timing { + clock-frequency = <23492370>; + hactive = <480>; + vactive = <800>; + hback-porch = <16>; + hfront-porch = <16>; + vback-porch = <2>; + vfront-porch = <28>; + hsync-len = <2>; + vsync-len = <1>; + hsync-active = <0>; + vsync-active = <0>; + de-active = <0>; + pixelclk-active = <0>; + }; + }; + + port { + lcd_ep: endpoint { + remote-endpoint = <&fimd_dpi_ep>; + }; + }; + }; |