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[v2,2/2] ARM: dts: omap3-devkit8000: Add ADS7846 Touchscreen support

Message ID 1438811229-14174-2-git-send-email-anthoine.bourgeois@gmail.com (mailing list archive)
State New, archived
Headers show

Commit Message

Anthoine Bourgeois Aug. 5, 2015, 9:47 p.m. UTC 
This patch is the touchscreen part for LCD screens sold with devkit8000
board.

Changes since v1:
 - rebase on omap-for-v4.3/dt

Signed-off-by: Anthoine Bourgeois <anthoine.bourgeois@gmail.com>
---
 arch/arm/boot/dts/omap3-devkit8000-lcd-common.dtsi | 35 ++++++++++++++++++++++
 1 file changed, 35 insertions(+)
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Patch

diff --git a/arch/arm/boot/dts/omap3-devkit8000-lcd-common.dtsi b/arch/arm/boot/dts/omap3-devkit8000-lcd-common.dtsi
index 332766d..e84184d 100644
--- a/arch/arm/boot/dts/omap3-devkit8000-lcd-common.dtsi
+++ b/arch/arm/boot/dts/omap3-devkit8000-lcd-common.dtsi
@@ -36,3 +36,38 @@ 
 		};
 	};
 };
+
+&vio {
+	regulator-min-microvolt = <1800000>;
+	regulator-max-microvolt = <1800000>;
+};
+
+&mcspi2 {
+
+	/* touch controller */
+	ads7846@0 {
+		compatible = "ti,ads7846";
+		vcc-supply = <&vio>;
+
+		reg = <0>;			/* CS0 */
+		spi-max-frequency = <1500000>;
+
+		interrupt-parent = <&gpio1>;
+		interrupts = <27 0>;		/* gpio_27 */
+		pendown-gpio = <&gpio1 27 0>;
+
+		ti,x-min = /bits/ 16 <0x0>;
+		ti,x-max = /bits/ 16 <0x0fff>;
+		ti,y-min = /bits/ 16 <0x0>;
+		ti,y-max = /bits/ 16 <0x0fff>;
+		ti,x-plate-ohms = /bits/ 16 <180>;
+		ti,pressure-max = /bits/ 16 <255>;
+		ti,debounce-max = /bits/ 16 <10>;
+		ti,debounce-tol = /bits/ 16 <5>;
+		ti,debounce-rep = /bits/ 16 <1>;
+		ti,keep-vref-on = <1>;
+		ti,settle-delay-usec = /bits/ 16 <150>;
+
+		linux,wakeup;
+	};
+};