Imx7D USBC inerface doesn't work

Technical Support
, , ,
1

Hello,
I am working with imx7D colibri SOM.
I have the Colibri evaluation board and a custom carry board.
In our carry board we have 2 usb ports, one connected to USB_H and another connected to USB_C.
The usb port connected to USB_H works fine but the another doesn’t work.
In dts file I changed the followe setting:

@@ -687,7 +687,7 @@
 };
 
 &usbotg1 {
-	dr_mode = "otg";
+	dr_mode = "host";
 };
 
 &usdhc1 {

I changed usbotg1 dr_mode to “host” but It doesn’t work.
Which is the setting in dts that a Ihave to made for this, I read in the IMX7 Datasheet that maybe I have to generate the 5V USB supply, is this ok?

Thanks,
Emmanuel

2

To be clear, PORT USB_C in the Col Eval board I could use it to connect it with my PC, but in my carry board when I connect a USB device (pendrive) It doesn’t detect It.

3

Please check if the USB circuits of your custom carrier board meets the requirements of our Currier Board Design Guide.

4

HI Alex,
Thanks for you reply,
Yes I find my problem, for some reason I had not extcon usb detection, so I added:

+	
+	extcon_usbc_det: usbc_det {
+		compatible = "linux,extcon-usb-gpio";
+		debounce = <25>;
+		id-gpio = <&gpio7 14 GPIO_ACTIVE_HIGH>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_usbc_det>;
+	};
 
 	gpio-keys {
 		compatible = "gpio-keys";
@@ -167,8 +175,9 @@
 };
 
 &usbotg1 {
+	extcon = <&extcon_usbc_det>, <&extcon_usbc_det>;
 	vbus-supply = <&reg_usbh_vbus>;
-	status = "disabled";
+	status = "okay";
 };
 
 /* The define SD_1_8 allows to use the SD interface at a higher speed mode
diff --git a/arch/arm/boot/dts/imx7-colibri.dtsi b/arch/arm/boot/dts/imx7-colibri.dtsi
index 1be5babe1719..81b7751fe70c 100644
--- a/arch/arm/boot/dts/imx7-colibri.dtsi
+++ b/arch/arm/boot/dts/imx7-colibri.dtsi
@@ -687,7 +687,7 @@
 };
 
 &usbotg1 {
-	dr_mode = "otg";
+	dr_mode = "host";
 };

There port usb works fine.
Can I use this port without ext con usb detection? If not, can I use this gpio pin (gpio7.IO14) as external input gpio at the same time that I using as usb detection?