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ARM: tegra: colibri: Activate STMPE811 touch controller

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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>
This commit is contained in:
Marcel Ziswiler 2015-08-28 17:59:42 +02:00 committed by Thierry Reding
parent 6456e9c5a2
commit 737a7c26a8
1 changed files with 40 additions and 0 deletions
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40
arch/arm/boot/dts/tegra30-colibri.dtsi
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@ -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