Commit 4868f573 authored by Loic Poulain's avatar Loic Poulain Committed by Bjorn Andersson
Browse files

arm: dts: qcom: db410c: Enable USB OTG support 



The Dragonboard-410c is able to act either as USB Host or Device.
The role can be determined at runtime via the USB_HS_ID pin which is
derived from the micro-usb port VBUS pin.

In Host role, SoC USB D+/D- are routed to the onboard USB 2.0 HUB.
In Device role, SoC USB D+/D- are routed to the USB 2.0 micro B port.
Routing is selected via USB_SW_SEL_PM gpio.

In device role USB HUB can be held in reset.

chipidea driver expects two extcon device pointers, one for the
EXTCON_USB event and one for the EXTCON_USB_HOST event. Since
the extcon-usb-gpio device is capable of generating both these
events, point two times to this extcon device.

Signed-off-by: default avatarLoic Poulain <loic.poulain@linaro.org>
Link: https://lore.kernel.org/r/1576083014-5842-1-git-send-email-loic.poulain@linaro.org


Signed-off-by: default avatarBjorn Andersson <bjorn.andersson@linaro.org>
parent 741a5ea7

arch/arm64/boot/dts/qcom/apq8016-sbc-pmic-pins.dtsi

+19 −0
Original line number Diff line number Diff line
@@ -5,6 +5,15 @@ 
&pm8916_gpios {



	usb_hub_reset_pm: usb_hub_reset_pm {

		pinconf {

			pins = "gpio3";

			function = PMIC_GPIO_FUNC_NORMAL;

			input-disable;

			output-high;

		};

	};



	usb_hub_reset_pm_device: usb_hub_reset_pm_device {

		pinconf {

			pins = "gpio3";

			function = PMIC_GPIO_FUNC_NORMAL;
@@ -22,6 +31,16 @@ 
		};

	};



	usb_sw_sel_pm_device: usb_sw_sel_pm_device {

		pinconf {

			pins = "gpio4";

			function = PMIC_GPIO_FUNC_NORMAL;

			power-source = <PM8916_GPIO_VPH>;

			input-disable;

			output-low;

		};

	};



	pm8916_gpios_leds: pm8916_gpios_leds {

		pinconf {

			pins = "gpio1", "gpio2";

arch/arm64/boot/dts/qcom/apq8016-sbc.dtsi

+6 −5
Original line number Diff line number Diff line
@@ -358,14 +358,15 @@ 
		};



		usb@78d9000 {

			extcon = <&usb_id>;

			extcon = <&usb_id>, <&usb_id>;

			status = "okay";

			adp-disable;

			hnp-disable;

			srp-disable;

			dr_mode = "host";

			pinctrl-names = "default";

			pinctrl-0 = <&usb_sw_sel_pm>;

			dr_mode = "otg";

			pinctrl-names = "default", "device";

			pinctrl-0 = <&usb_sw_sel_pm &usb_hub_reset_pm>;

			pinctrl-1 = <&usb_sw_sel_pm_device &usb_hub_reset_pm_device>;

			ulpi {

				phy {

					v1p8-supply = <&pm8916_l7>;
@@ -504,7 +505,7 @@ 


	usb_id: usb-id {

		compatible = "linux,extcon-usb-gpio";

		vbus-gpio = <&msmgpio 121 GPIO_ACTIVE_HIGH>;

		id-gpio = <&msmgpio 121 GPIO_ACTIVE_HIGH>;

		pinctrl-names = "default";

		pinctrl-0 = <&usb_id_default>;

	};