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dts: overlay: add support for HY28A display

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Add Device Tree overlay for HY28A display by HAOYU Electronics.
Default values are set to match Texy's display shield.

Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
This commit is contained in:
Noralf Trønnes
2015-02-26 21:36:27 +01:00
committed by popcornmix
parent cc77252e93
commit 069873b96c
2 changed files with 88 additions and 0 deletions
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1
arch/arm/boot/dts/Makefile
View File

@@ -19,6 +19,7 @@ dtb-$(RPI_DT_OVERLAYS) += hifiberry-dac-overlay.dtb
dtb-$(RPI_DT_OVERLAYS) += hifiberry-dacplus-overlay.dtb
dtb-$(RPI_DT_OVERLAYS) += hifiberry-digi-overlay.dtb
dtb-$(RPI_DT_OVERLAYS) += hifiberry-amp-overlay.dtb
dtb-$(RPI_DT_OVERLAYS) += hy28a-overlay.dtb
dtb-$(RPI_DT_OVERLAYS) += iqaudio-dac-overlay.dtb
dtb-$(RPI_DT_OVERLAYS) += iqaudio-dacplus-overlay.dtb
dtb-$(RPI_DT_OVERLAYS) += lirc-rpi-overlay.dtb

87
arch/arm/boot/dts/hy28a-overlay.dts Normal file
View File

@@ -0,0 +1,87 @@
/*
* Device Tree overlay for HY28A display
*
*/
/dts-v1/;
/plugin/;
/ {
compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709";
fragment@0 {
target = <&spi0>;
__overlay__ {
status = "okay";
spidev@0{
status = "disabled";
};
spidev@1{
status = "disabled";
};
};
};
fragment@1 {
target = <&gpio>;
__overlay__ {
hy28a_pins: hy28a_pins {
brcm,pins = <17 25 18>;
brcm,function = <0 1 1>; /* in out out */
};
};
};
fragment@2 {
target = <&spi0>;
__overlay__ {
/* needed to avoid dtc warning */
#address-cells = <1>;
#size-cells = <0>;
hy28a: hy28a@0{
compatible = "ilitek,ili9320";
reg = <0>;
pinctrl-names = "default";
pinctrl-0 = <&hy28a_pins>;
spi-max-frequency = <32000000>;
spi-cpol;
spi-cpha;
rotate = <270>;
bgr;
fps = <50>;
buswidth = <8>;
startbyte = <0x70>;
reset-gpios = <&gpio 25 0>;
led-gpios = <&gpio 18 1>;
debug = <0>;
};
hy28a_ts: hy28a-ts@1 {
compatible = "ti,ads7846";
reg = <1>;
spi-max-frequency = <2000000>;
interrupts = <17 2>; /* high-to-low edge triggered */
interrupt-parent = <&gpio>;
pendown-gpio = <&gpio 17 0>;
ti,x-plate-ohms = /bits/ 16 <100>;
ti,pressure-max = /bits/ 16 <255>;
};
};
};
__overrides__ {
speed = <&hy28a>,"spi-max-frequency:0";
rotate = <&hy28a>,"rotate:0";
fps = <&hy28a>,"fps:0";
debug = <&hy28a>,"debug:0";
xohms = <&hy28a_ts>,"ti,x-plate-ohms;0";
resetgpio = <&hy28a>,"reset-gpios:4",
<&hy28a_pins>, "brcm,pins:1";
ledgpio = <&hy28a>,"led-gpios:4",
<&hy28a_pins>, "brcm,pins:2";
};
};