From 234a0387f73cd109e03aee8c2d6f26a54b69d403 Mon Sep 17 00:00:00 2001 From: Stephan Gerhold Date: Thu, 19 Dec 2019 21:20:49 +0100 Subject: ARM: dts: ux500: samsung-golden: Add touch screen samsung-golden has an Atmel mXT224S touch controller connected to I2C. It is supported by the existing driver for atmel,maxtouch, so all we need to do to make it work is to define the necessary device tree nodes. The atmel_mxt_ts driver does not support controlling regulators yet, so add regulator-always-on for now to turn on the necessary regulators. Signed-off-by: Stephan Gerhold Link: https://lore.kernel.org/r/20191219202052.19039-7-stephan@gerhold.net Signed-off-by: Linus Walleij --- arch/arm/boot/dts/ste-ux500-samsung-golden.dts | 31 ++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) (limited to 'arch/arm/boot/dts/ste-ux500-samsung-golden.dts') diff --git a/arch/arm/boot/dts/ste-ux500-samsung-golden.dts b/arch/arm/boot/dts/ste-ux500-samsung-golden.dts index 14a084e1846b..e75a425d177e 100644 --- a/arch/arm/boot/dts/ste-ux500-samsung-golden.dts +++ b/arch/arm/boot/dts/ste-ux500-samsung-golden.dts @@ -142,6 +142,26 @@ }; }; + i2c@80110000 { + status = "okay"; + + pinctrl-names = "default", "sleep"; + pinctrl-0 = <&i2c3_c_2_default>; + pinctrl-1 = <&i2c3_c_2_sleep>; + + touchscreen@4a { + compatible = "atmel,maxtouch"; + reg = <0x4a>; + + /* GPIO218 (TSP_INT_1V8) */ + interrupt-parent = <&gpio6>; + interrupts = <26 IRQ_TYPE_EDGE_FALLING>; + + pinctrl-names = "default"; + pinctrl-0 = <&tsp_default>; + }; + }; + prcmu@80157000 { ab8505 { ab8500_usb { @@ -161,6 +181,7 @@ regulator-name = "vreg_tsp_a3v3"; regulator-min-microvolt = <3300000>; regulator-max-microvolt = <3300000>; + regulator-always-on; /* FIXME */ }; ab8500_ldo_aux3 { @@ -177,6 +198,7 @@ regulator-name = "vreg_tsp_1v8"; regulator-min-microvolt = <1800000>; regulator-max-microvolt = <1800000>; + regulator-always-on; /* FIXME */ }; ab8500_ldo_aux6 { @@ -309,6 +331,15 @@ }; }; + tsp { + tsp_default: tsp_default { + golden_cfg1 { + pins = "GPIO218_AH11"; /* TSP_INT_1V8 */ + ste,config = <&gpio_in_nopull>; + }; + }; + }; + vibrator { vibrator_default: vibrator_default { golden_cfg1 { -- cgit