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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/display/panel/samsung,ld9040.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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+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/display/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>;
+ };
+ };
+ };