The Kobo Aura has an eKTF2132 touchscreen controller. Although the vendor kernel toggles a reset pin (GPIO5-12) during the startup sequence, the touchscreen works without it.
Signed-off-by: Jonathan Neuschäfer <j.neuschae...@gmx.net> --- v2: - Fix devicetree build by adding #include <dt-bindings/interrupt-controller/irq.h> - Drop the first two patches, which been applied in the meantime v1: - https://lore.kernel.org/lkml/20201106112412.390724-4-j.neuschae...@gmx.net/ --- arch/arm/boot/dts/imx50-kobo-aura.dts | 17 ++++++++++++++++- 1 file changed, 16 insertions(+), 1 deletion(-) diff --git a/arch/arm/boot/dts/imx50-kobo-aura.dts b/arch/arm/boot/dts/imx50-kobo-aura.dts index 53b3995d37e7f..97cfd970fe742 100644 --- a/arch/arm/boot/dts/imx50-kobo-aura.dts +++ b/arch/arm/boot/dts/imx50-kobo-aura.dts @@ -6,6 +6,7 @@ /dts-v1/; #include "imx50.dtsi" #include <dt-bindings/input/input.h> +#include <dt-bindings/interrupt-controller/irq.h> / { model = "Kobo Aura (N514)"; @@ -119,7 +120,14 @@ &i2c1 { pinctrl-0 = <&pinctrl_i2c1>; status = "okay"; - /* TODO: ektf2132 touch controller at 0x15 */ + touchscreen@15 { + reg = <0x15>; + compatible = "elan,ektf2132"; + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_ts>; + power-gpios = <&gpio4 9 GPIO_ACTIVE_HIGH>; + interrupts-extended = <&gpio5 13 IRQ_TYPE_EDGE_FALLING>; + }; }; &i2c2 { @@ -225,6 +233,13 @@ MX50_PAD_SD3_D7__ESDHC3_DAT7 0x1d4 >; }; + pinctrl_ts: tsgrp { + fsl,pins = < + MX50_PAD_CSPI_MOSI__GPIO4_9 0x0 + MX50_PAD_SD2_D5__GPIO5_13 0x0 + >; + }; + pinctrl_uart2: uart2grp { fsl,pins = < MX50_PAD_UART2_TXD__UART2_TXD_MUX 0x1e4 -- 2.28.0
