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authorPhilippe Schenker <philippe.schenker@toradex.com>2019-01-22 16:21:34 +0300
committerShawn Guo <shawnguo@kernel.org>2019-02-11 04:22:27 +0300
commita822029a0cc0b838bff043482629f5fb9c2deb32 (patch)
tree7e1aa945f42ff9de3937acc09fa3bbc814e2b8a5 /arch/arm/boot/dts/imx6qdl-colibri.dtsi
parentda8782f673a1986bc8691461d3e6ccea988257da (diff)
downloadlinux-a822029a0cc0b838bff043482629f5fb9c2deb32.tar.xz
ARM: dts: Add stmpe-adc DT node to Toradex iMX6 modules
Add the stmpe-adc DT node as found on Toradex iMX6 modules Signed-off-by: Philippe Schenker <philippe.schenker@toradex.com> Reviewed-by: Stefan Agner <stefan@agner.ch> Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Diffstat (limited to 'arch/arm/boot/dts/imx6qdl-colibri.dtsi')
-rw-r--r--arch/arm/boot/dts/imx6qdl-colibri.dtsi22
1 files changed, 14 insertions, 8 deletions
diff --git a/arch/arm/boot/dts/imx6qdl-colibri.dtsi b/arch/arm/boot/dts/imx6qdl-colibri.dtsi
index 8a27c2a05678..1beac22266ed 100644
--- a/arch/arm/boot/dts/imx6qdl-colibri.dtsi
+++ b/arch/arm/boot/dts/imx6qdl-colibri.dtsi
@@ -262,11 +262,17 @@
id = <0>;
blocks = <0x5>;
irq-trigger = <0x1>;
+ /* 3.25 MHz ADC clock speed */
+ st,adc-freq = <1>;
+ /* 12-bit ADC */
+ st,mod-12b = <1>;
+ /* internal ADC reference */
+ st,ref-sel = <0>;
+ /* ADC converstion time: 80 clocks */
+ st,sample-time = <4>;
stmpe_touchscreen {
compatible = "st,stmpe-ts";
- /* 3.25 MHz ADC clock speed */
- st,adc-freq = <1>;
/* 8 sample average control */
st,ave-ctrl = <3>;
/* 7 length fractional part in z */
@@ -276,17 +282,17 @@
* 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>;
};
+
+ stmpe_adc {
+ compatible = "st,stmpe-adc";
+ /* forbid to use ADC channels 3-0 (touch) */
+ st,norequest-mask = <0x0F>;
+ };
};
};