ARM: tegra: colibri: Activate STMPE811 touch controller

Activate STMPE811 touch controller as found on Colibri T30 modules.

Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>

diff --git a/arch/arm/boot/dts/tegra30-colibri.dtsi b/arch/arm/boot/dts/tegra30-colibri.dtsi
index fba3d2a8b9fcc7573665c6964750ed650b9289fe..5f8ec5cafe9e6671f7824159c271732b4b20e6c7 100644 (file)
--- a/arch/arm/boot/dts/tegra30-colibri.dtsi
+++ b/arch/arm/boot/dts/tegra30-colibri.dtsi
@@ -320,6 +320,46 @@
                        };
                };
 
+               /* STMPE811 touch screen controller */
+               stmpe811@41 {
+                       compatible = "st,stmpe811";
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       reg = <0x41>;
+                       interrupts = <TEGRA_GPIO(V, 0) IRQ_TYPE_LEVEL_LOW>;
+                       interrupt-parent = <&gpio>;
+                       interrupt-controller;
+                       id = <0>;
+                       blocks = <0x5>;
+                       irq-trigger = <0x1>;
+
+                       stmpe_touchscreen {
+                               compatible = "st,stmpe-ts";
+                               reg = <0>;
+                               /* 3.25 MHz ADC clock speed */
+                               st,adc-freq = <1>;
+                               /* 8 sample average control */
+                               st,ave-ctrl = <3>;
+                               /* 7 length fractional part in z */
+                               st,fraction-z = <7>;
+                               /*
+                                * 50 mA typical 80 mA max touchscreen drivers
+                                * current limit value
+                                */
+                               st,i-drive = <1>;
+                               /* 12-bit ADC */
+                               st,mod-12b = <1>;
+                               /* internal ADC reference */
+                               st,ref-sel = <0>;
+                               /* ADC converstion time: 80 clocks */
+                               st,sample-time = <4>;
+                               /* 1 ms panel driver settling time */
+                               st,settling = <3>;
+                               /* 5 ms touch detect interrupt delay */
+                               st,touch-det-delay = <5>;
+                       };
+               };
+
                /*
                 * LM95245 temperature sensor
                 * Note: OVERT_N directly connected to PMIC PWRDN