VIM1S Android 11 USB OTG Port as Host

Technical Support
1

Hi Team,

We wanted to make USB OTG port as USB Host Port in VIM1S, what are the changes required in DTB or kernel to do this and also how to do that ?

  1. What is the kernel menuconfig command from WORKING_DIRECTORY in Android 11 SDK ?
  2. Is there any command line option to change USB OTG port between Host and Device like /proc/ /sys FS commands

Regards,
YSN

2

@ysn_yaga
common/arch/arm64/boot/dts/amlogic/kvim1s.dts

&dwc2_a {
	status = "okay";
	/** 0: normal, 1: otg+dwc3 host only, 2: otg+dwc3 device only*/
-	controller-type = <2>;
+	controller-type = <1>;
};
3

@goenjoy We have attempted to compile with above suggestion, but still USB OTG port is not changed to HOST mode, still in device mode.
also getting this message in console.
[ 145.194396] <4>[ 145.194396@0] USB RESET
[ 416.821356] <4>[ 416.821356@0] USB RESET
Is there any other configuration missing in this case ?

Regards,
YSN

5

@ysn_yaga

--- a/arch/arm64/boot/dts/amlogic/kvim1s.dts
+++ b/arch/arm64/boot/dts/amlogic/kvim1s.dts
@@ -1185,7 +1185,7 @@
 };
 
 &dwc2_a {
-       status = "okay";
+       status = "disabled";
7

Hi @goenjoy Still not able get correct OTG as Host configuration ?
Can you suggest ?

8

@ysn_yaga My verification is OK. Are you using our board for verification?

9

Yes, Using Khadas VIM1S

10

@ysn_yaga Have you executed the compile kernel command? Also, record a video to see the process and phenomena of your verification. Can you tell me your purpose for this?