Commit 99128e75 authored by Iskren Chernev's avatar Iskren Chernev Committed by Bjorn Andersson
Browse files

ARM: dts: qcom: msm8974-klte: Add gpio expander chip 



The Samsung Galaxy S5 has a GPIO Expander chip, the PCAL6416A with 16
ports on a i2c bus. These pins are used for WiFi, NFC, IR among other
things.

Signed-off-by: default avatarIskren Chernev <iskren.chernev@gmail.com>
Link: https://lore.kernel.org/r/20200920144859.813032-6-iskren.chernev@gmail.com


Signed-off-by: default avatarBjorn Andersson <bjorn.andersson@linaro.org>
parent 60367221

arch/arm/boot/dts/qcom-msm8974-samsung-klte.dts

+27 −2
Original line number Diff line number Diff line
@@ -236,10 +236,25 @@ 
		scl-gpios = <&msmgpio 121 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;

		sda-gpios = <&msmgpio 120 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;

		pinctrl-names = "default";

		pinctrl-0 = <&i2c_led_pins>;

		pinctrl-0 = <&i2c_led_gpioex_pins>;



		i2c-gpio,delay-us = <2>;



		gpio_expander: gpio@20 {

			compatible = "nxp,pcal6416";

			reg = <0x20>;



			gpio-controller;

			#gpio-cells = <2>;



			vcc-supply = <&pma8084_s4>;



			pinctrl-names = "default";

			pinctrl-0 = <&gpioex_pin>;



			reset-gpios = <&msmgpio 145 GPIO_ACTIVE_LOW>;

		};



		led-controller@30 {

			compatible = "panasonic,an30259a";

			reg = <0x30>;
@@ -352,7 +367,7 @@ 
			};

		};



		i2c_led_pins: i2c-led {

		i2c_led_gpioex_pins: i2c-led-gpioex {

			mux {

				pins = "gpio120", "gpio121";

				function = "gpio";
@@ -360,6 +375,16 @@ 
				bias-pull-down;

			};

		};



		gpioex_pin: gpioex {

			res {

				pins = "gpio145";

				function = "gpio";



				bias-pull-up;

				drive-strength = <2>;

			};

		};

	};



	sdhci@f9824900 {

CRA Git | Maintained and supported by SUSTech CRA and CCSE