From a193dc521c97c07098bf0b6345966561a1f0ab9f Mon Sep 17 00:00:00 2001 From: Iskren Chernev Date: Sun, 20 Sep 2020 17:48:54 +0300 Subject: [PATCH] ARM: dts: qcom: msm8974-klte: Add support for touchkey Add support for the touchkey found on the Samsung Galaxy S5. The touchkey is responsible for handling the application and back buttons found around the home button. Signed-off-by: Iskren Chernev Link: https://lore.kernel.org/r/20200920144859.813032-3-iskren.chernev@gmail.com Signed-off-by: Bjorn Andersson --- .../boot/dts/qcom-msm8974-samsung-klte.dts | 44 ++++++++++++++++++- 1 file changed, 43 insertions(+), 1 deletion(-) diff --git a/arch/arm/boot/dts/qcom-msm8974-samsung-klte.dts b/arch/arm/boot/dts/qcom-msm8974-samsung-klte.dts index 9520c6e7910ce..750e2f261139a 100644 --- a/arch/arm/boot/dts/qcom-msm8974-samsung-klte.dts +++ b/arch/arm/boot/dts/qcom-msm8974-samsung-klte.dts @@ -145,7 +145,7 @@ }; pma8084_l19: l19 { - regulator-min-microvolt = <2900000>; + regulator-min-microvolt = <3300000>; regulator-max-microvolt = <3300000>; }; @@ -203,6 +203,31 @@ }; }; + i2c-gpio-touchkey { + compatible = "i2c-gpio"; + #address-cells = <1>; + #size-cells = <0>; + sda-gpios = <&msmgpio 95 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>; + scl-gpios = <&msmgpio 96 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>; + pinctrl-names = "default"; + pinctrl-0 = <&i2c_touchkey_pins>; + + touchkey@20 { + compatible = "cypress,tm2-touchkey"; + reg = <0x20>; + + interrupt-parent = <&pma8084_gpios>; + interrupts = <6 IRQ_TYPE_EDGE_FALLING>; + pinctrl-names = "default"; + pinctrl-0 = <&touchkey_pin>; + + vcc-supply = <&max77826_ldo15>; + vdd-supply = <&pma8084_l19>; + + linux,keycodes = ; + }; + }; + /delete-node/ vreg-boost; }; @@ -268,6 +293,15 @@ bias-disable; }; }; + + i2c_touchkey_pins: i2c-touchkey { + mux { + pins = "gpio95", "gpio96"; + function = "gpio"; + input-enable; + bias-pull-up; + }; + }; }; sdhci@f9824900 { @@ -418,6 +452,14 @@ bias-pull-up; power-source = ; }; + + touchkey_pin: touchkey-int-pin { + pins = "gpio6"; + function = "normal"; + bias-disable; + input-enable; + power-source = ; + }; }; }; }; -- 2.30.2