ARM: dts: omap4-droid4: update touchscreen

Update the Droid 4 devicetree to properly describe the reset
GPIO. Also rename the node to touchscreen instead of tsp,
which seems to be commonly used for touchscreens.

Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: Tony Lindgren <tony@atomide.com>

1 files changed, 6 insertions, 16 deletions

diff --git a/arch/arm/boot/dts/omap4-droid4-xt894.dts b/arch/arm/boot/dts/omap4-droid4-xt894.dts
index b21084da490b..65c2cc6a9a30 100644
--- a/arch/arm/boot/dts/omap4-droid4-xt894.dts
+++ b/arch/arm/boot/dts/omap4-droid4-xt894.dts
@@ -124,13 +124,6 @@
 };
 
 &gpio6 {
-        touchscreen_reset {
-                gpio-hog;
-                gpios = <13 0>;
-                output-high;
-                line-name = "touchscreen-reset";
-        };
-
         pwm8: dmtimer-pwm-8 {
                 pinctrl-names = "default";
                 pinctrl-0 = <&vibrator_direction_pin>;
@@ -362,22 +355,18 @@
         };
 };
 
-/*
- * REVISIT: Add gpio173 reset pin handling to the driver, see gpio-hog above.
- * If the GPIO reset is used, we probably need to have /lib/firmware/maxtouch.fw
- * available. See "mxt-app" and "droid4-touchscreen-firmware" tools for more
- * information.
- */
 &i2c2 {
-        tsp@4a {
+        touchscreen@4a {
                 compatible = "atmel,maxtouch";
                 reg = <0x4a>;
                 pinctrl-names = "default";
                 pinctrl-0 = <&touchscreen_pins>;
 
+                reset-gpios = <&gpio6 13 GPIO_ACTIVE_HIGH>; /* gpio173 */
+
                 /* gpio_183 with sys_nirq2 pad as wakeup */
-                interrupts-extended = <&gpio6 23 IRQ_TYPE_EDGE_FALLING
-                                       &omap4_pmx_core 0x160>;
+                interrupts-extended = <&gpio6 23 IRQ_TYPE_EDGE_FALLING>,
+                                      <&omap4_pmx_core 0x160>;
                 interrupt-names = "irq", "wakeup";
                 wakeup-source;
         };
@@ -435,6 +424,7 @@
 
         touchscreen_pins: pinmux_touchscreen_pins {
                 pinctrl-single,pins = <
+                OMAP4_IOPAD(0x180, PIN_OUTPUT | MUX_MODE3)
                 OMAP4_IOPAD(0x1a0, PIN_INPUT_PULLUP | MUX_MODE3)
                 >;
         };