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

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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: Loic Poulain <loic.poulain@linaro.org>
Link: https://lore.kernel.org/r/1576083014-5842-1-git-send-email-loic.poulain@linaro.org
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
This commit is contained in:
Loic Poulain
2019-12-11 17:50:14 +01:00
committed by Bjorn Andersson
parent 741a5ea7a6
commit 4868f573a7
2 changed files with 25 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

19
arch/arm64/boot/dts/qcom/apq8016-sbc-pmic-pins.dtsi
View File

@@ -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";

11
arch/arm64/boot/dts/qcom/apq8016-sbc.dtsi
View File

@@ -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>;
};