[PATCH V2] DTS: davinci: da850evm: Enable LCD and Backlight
Adam Ford
aford173 at gmail.com
Thu Apr 26 19:18:54 PDT 2018
When using the board files the LCD works, but not with the DT.
This adds enables the original da850-evm to work with the same
LCD in device tree mode.
Signed-off-by: Adam Ford <aford173 at gmail.com>
---
V2: Add regulator and GPIO enable pins. Remove PWM backlight and replace with GPIO
arch/arm/boot/dts/da850-evm.dts | 63 +++++++++++++++++++++++++++++++++
1 file changed, 63 insertions(+)
diff --git a/arch/arm/boot/dts/da850-evm.dts b/arch/arm/boot/dts/da850-evm.dts
index 11cf3765214f..4c59dab3362e 100644
--- a/arch/arm/boot/dts/da850-evm.dts
+++ b/arch/arm/boot/dts/da850-evm.dts
@@ -164,6 +164,51 @@
status = "okay";
};
};
+
+ backlight {
+ compatible = "gpio-backlight";
+ enable-gpios = <&gpio 48 GPIO_ACTIVE_HIGH>;
+ default-on;
+ };
+
+ panel {
+ compatible = "ti,tilcdc,panel";
+ pinctrl-names = "default";
+ pinctrl-0 = <&lcd_pins>;
+ status = "okay";
+ enable-gpios = <&gpio 47 GPIO_ACTIVE_HIGH>;
+
+ panel-info {
+ ac-bias = <255>;
+ ac-bias-intrpt = <0>;
+ dma-burst-sz = <16>;
+ bpp = <16>;
+ fdd = <0x80>;
+ sync-edge = <0>;
+ sync-ctrl = <1>;
+ raster-order = <0>;
+ fifo-th = <0>;
+ };
+
+ display-timings {
+ 480x272 {
+ clock-frequency = <9000000>;
+ hactive = <480>;
+ vactive = <272>;
+ hfront-porch = <3>;
+ hback-porch = <2>;
+ hsync-len = <42>;
+ vback-porch = <3>;
+ vfront-porch = <4>;
+ vsync-len = <11>;
+ hsync-active = <0>;
+ vsync-active = <0>;
+ de-active = <1>;
+ pixelclk-active = <1>;
+ };
+ };
+ };
+
vbat: fixedregulator0 {
compatible = "regulator-fixed";
regulator-name = "vbat";
@@ -172,6 +217,16 @@
regulator-boot-on;
};
+ lcd_reg: lcdregulator {
+ compatible = "regulator-fixed";
+ regulator-name = "m_lcd_panel_pwr";
+ regulator-min-microvolt = <3300000>;
+ regulator-max-microvolt = <3300000>;
+ gpio = <&gpio 40 GPIO_ACTIVE_HIGH>;
+ enable-active-high;
+ regulator-always-on;
+ };
+
sound {
compatible = "simple-audio-card";
simple-audio-card,name = "DA850/OMAP-L138 EVM";
@@ -255,6 +310,14 @@
};
};
+&gpio {
+ status = "okay";
+};
+
+&lcdc {
+ status = "okay";
+};
+
&mcasp0 {
#sound-dai-cells = <0>;
status = "okay";
--
2.17.0
More information about the linux-arm-kernel
mailing list