ARM: OMAP2+: LogicPD Torpedo: Add Touchscreen Support

The development kit uses a TSC2004 chip attached to I2C3.

Signed-off-by: Adam Ford <aford173@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

diff --git a/arch/arm/boot/dts/logicpd-torpedo-37xx-devkit.dts b/arch/arm/boot/dts/logicpd-torpedo-37xx-devkit.dts
index 6854bda5063f1368a1cfdda101fdc21ccc1dbab7..fb13f18c08cc36f4292d3c3bbe19fa74199acd85 100644 (file)
--- a/arch/arm/boot/dts/logicpd-torpedo-37xx-devkit.dts
+++ b/arch/arm/boot/dts/logicpd-torpedo-37xx-devkit.dts
@@ -204,6 +204,12 @@
                >;
        };
 
+       tsc2004_pins: pinmux_tsc2004_pins {
+               pinctrl-single,pins = <
+                       OMAP3_CORE1_IOPAD(0x2186, PIN_INPUT | MUX_MODE4)        /* mcbsp4_dr.gpio_153 */
+               >;
+       };
+
        backlight_pins: pinmux_backlight_pins {
                pinctrl-single,pins = <
                        OMAP3_CORE1_IOPAD(0x20B8, PIN_OUTPUT | MUX_MODE4)       /* gpmc_ncs5.gpio_56 */
@@ -262,6 +268,27 @@
        };
 };
 
+&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>;
+       };
+};
+
 &uart1 {
        interrupts-extended = <&intc 72 &omap3_pmx_core OMAP3_UART1_RX>;
 };