Goodix GT801 2+1 is a touchscreen controller supporting up to 10 touches. Enable pin and wakeup pin support is currently not implemented: - enable pin (PI16, specified in FEX) seems to be wrong - wakeup pin needs some additional reverse engineering work Signed-off-by: Priit Laes <plaes@xxxxxxxxx> --- arch/arm/boot/dts/sun4i-a10-gemei-g9.dts | 26 ++++++++++++++++++++++++-- 1 file changed, 24 insertions(+), 2 deletions(-) diff --git a/arch/arm/boot/dts/sun4i-a10-gemei-g9.dts b/arch/arm/boot/dts/sun4i-a10-gemei-g9.dts index 1d73a98..52e6275 100644 --- a/arch/arm/boot/dts/sun4i-a10-gemei-g9.dts +++ b/arch/arm/boot/dts/sun4i-a10-gemei-g9.dts @@ -48,6 +48,7 @@ #include <dt-bindings/gpio/gpio.h> #include <dt-bindings/input/input.h> #include <dt-bindings/interrupt-controller/irq.h> +#include <dt-bindings/pinctrl/sun4i-a10.h> / { model = "Gemei G9 Tablet"; @@ -65,11 +66,11 @@ /* * TODO: * 2x cameras via CSI - * audio input + * audio input (+ ext. amplifier enable GPIO) * AXP battery management * NAND * OTG - * Touchscreen - gt801_2plus1 @ i2c adapter 2 @ 0x48 + * Touchscreen enable and wakeup pins */ &codec { status = "okay"; @@ -114,6 +115,27 @@ }; }; +&i2c2 { + pinctrl-names = "default"; + pinctrl-0 = <&i2c2_pins_a>; + status = "okay"; + + touchscreen@55 { + compatible = "goodix,gt801_2plus1"; + reg = <0x55>; + + interrupt-parent = <&pio>; + interrupts = <7 21 IRQ_TYPE_EDGE_FALLING>; /* EINT21 (PH21) */ + + /* + * TODO - figure out the wakeup pin: + * ctp_wakeup = port:PB13<1><default><default><1> + * TODO - find correct GPIO pin, PI16 seems to be incorrect: + * ctp_en = port:PI16<1><default><default><0> + */ + }; +}; + &lradc { vref-supply = <®_ldo2>; -- 2.6.3 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html