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ARM: dts: omap4-droid4: update touchscreen

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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>
This commit is contained in:
Sebastian Reichel 2018-02-11 22:15:05 +01:00 committed by Tony Lindgren
parent f88bf4fcea
commit 6d7bdd328d
1 changed files with 6 additions and 16 deletions
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22
arch/arm/boot/dts/omap4-droid4-xt894.dts
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@ -124,13 +124,6 @@
}; };
&gpio6 { &gpio6 {
touchscreen_reset {
gpio-hog;
gpios = <13 0>;
output-high;
line-name = "touchscreen-reset";
};
pwm8: dmtimer-pwm-8 { pwm8: dmtimer-pwm-8 {
pinctrl-names = "default"; pinctrl-names = "default";
pinctrl-0 = <&vibrator_direction_pin>; 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 { &i2c2 {
tsp@4a { touchscreen@4a {
compatible = "atmel,maxtouch"; compatible = "atmel,maxtouch";
reg = <0x4a>; reg = <0x4a>;
pinctrl-names = "default"; pinctrl-names = "default";
pinctrl-0 = <&touchscreen_pins>; pinctrl-0 = <&touchscreen_pins>;
reset-gpios = <&gpio6 13 GPIO_ACTIVE_HIGH>; /* gpio173 */
/* gpio_183 with sys_nirq2 pad as wakeup */ /* gpio_183 with sys_nirq2 pad as wakeup */
interrupts-extended = <&gpio6 23 IRQ_TYPE_EDGE_FALLING interrupts-extended = <&gpio6 23 IRQ_TYPE_EDGE_FALLING>,
&omap4_pmx_core 0x160>; <&omap4_pmx_core 0x160>;
interrupt-names = "irq", "wakeup"; interrupt-names = "irq", "wakeup";
wakeup-source; wakeup-source;
}; };
@ -435,6 +424,7 @@
touchscreen_pins: pinmux_touchscreen_pins { touchscreen_pins: pinmux_touchscreen_pins {
pinctrl-single,pins = < pinctrl-single,pins = <
OMAP4_IOPAD(0x180, PIN_OUTPUT | MUX_MODE3)
OMAP4_IOPAD(0x1a0, PIN_INPUT_PULLUP | MUX_MODE3) OMAP4_IOPAD(0x1a0, PIN_INPUT_PULLUP | MUX_MODE3)
>; >;
}; };