diff mbox

OMAP3: LOGICPD-SOM-LV: Enable touchscreen support

Message ID 1456181892-3567-1-git-send-email-aford173@gmail.com (mailing list archive)
State New, archived
Headers show

Commit Message

Adam Ford Feb. 22, 2016, 10:58 p.m. UTC 
The DM37xx SOM-LV has a TSC2004 Touchscreen controller integrated into
the module on the I2C3 bus.

Signed-off-by: Adam Ford <aford173@gmail.com>
---
 arch/arm/boot/dts/logicpd-som-lv.dtsi | 27 ++++++++++++++++++++++++++-
 1 file changed, 26 insertions(+), 1 deletion(-)
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Patch

diff --git a/arch/arm/boot/dts/logicpd-som-lv.dtsi b/arch/arm/boot/dts/logicpd-som-lv.dtsi
index 365f39f..79cfdae 100644
--- a/arch/arm/boot/dts/logicpd-som-lv.dtsi
+++ b/arch/arm/boot/dts/logicpd-som-lv.dtsi
@@ -211,7 +211,11 @@ 
 		>;
 	};
 
-
+	tsc2004_pins: pinmux_tsc2004_pins {
+		pinctrl-single,pins = <
+			OMAP3_CORE1_IOPAD(0x2186, PIN_INPUT | MUX_MODE4)	/* mcbsp4_dr.gpio_153 */
+		>;
+	};
 };
 
 &omap3_pmx_wkup {
@@ -239,6 +243,27 @@ 
 	};
 };
 
+&i2c3 {
+	touchscreen: tsc2004@48 {
+		compatible = "ti,tsc2004";
+		reg = <0x48>;
+		vio-supply = <&vaux1>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&tsc2004_pins>;
+		interrupts-extended = <&gpio5 25 IRQ_TYPE_EDGE_RISING>; /* gpio 153 */
+
+		touchscreen-fuzz-x = <4>;
+		touchscreen-fuzz-y = <7>;
+		touchscreen-fuzz-pressure = <2>;
+		touchscreen-size-x = <4096>;
+		touchscreen-size-y = <4096>;
+		touchscreen-max-pressure = <2048>;
+
+		ti,x-plate-ohms = <280>;
+		ti,esd-recovery-timeout-ms = <8000>;
+	};
+};
+
 &uart2 {
 	interrupts-extended = <&intc 73 &omap3_pmx_core OMAP3_UART2_RX>;
 	pinctrl-names = "default";