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ARM: dts: am57xx: cl-som-am57x: add touchscreen support

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Add ADS7846 touchscreen support.

Signed-off-by: Dmitry Lifshitz <lifshitz@compulab.co.il>
Acked-by: Igor Grinberg <grinberg@compulab.co.il>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This commit is contained in:
Dmitry Lifshitz
2015-12-01 20:03:11 +02:00
committed by Tony Lindgren
parent 27ddd846cb
commit 2d47fc3b98
1 changed files with 44 additions and 0 deletions
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44
arch/arm/boot/dts/am57xx-cl-som-am57x.dts
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@@ -43,6 +43,13 @@ vdd_3v3: fixedregulator-vdd_3v3 {
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
};
ads7846reg: fixedregulator-ads7846-reg {
compatible = "regulator-fixed";
regulator-name = "ads7846-reg";
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
};
};
&dra7_pmx_core {
@@ -183,6 +190,12 @@ DRA7XX_CORE_IOPAD(0x3590, PIN_INPUT | MUX_MODE15)
DRA7XX_CORE_IOPAD(0x3594, PIN_INPUT | MUX_MODE15)
>;
};
ads7846_pins: pinmux_ads7846_pins {
pinctrl-single,pins = <
DRA7XX_CORE_IOPAD(0x3464, PIN_INPUT_PULLDOWN | MUX_MODE14) /* gpmc_a9.gpio1_31 */
>;
};
};
&i2c1 {
@@ -451,6 +464,37 @@ partition@100000 {
reg = <0x100000 0x0>;
};
};
/* touch controller */
ads7846@0 {
pinctrl-names = "default";
pinctrl-0 = <&ads7846_pins>;
compatible = "ti,ads7846";
vcc-supply = <&ads7846reg>;
reg = <1>; /* CS1 */
spi-max-frequency = <1500000>;
interrupt-parent = <&gpio1>;
interrupts = <31 0>;
pendown-gpio = <&gpio1 31 0>;
ti,x-min = /bits/ 16 <0x0>;
ti,x-max = /bits/ 16 <0x0fff>;
ti,y-min = /bits/ 16 <0x0>;
ti,y-max = /bits/ 16 <0x0fff>;
ti,x-plate-ohms = /bits/ 16 <180>;
ti,pressure-max = /bits/ 16 <255>;
ti,debounce-max = /bits/ 16 <30>;
ti,debounce-tol = /bits/ 16 <10>;
ti,debounce-rep = /bits/ 16 <1>;
linux,wakeup;
};
};
&mac {