Hello, I am trying to make a WP7607 go into sleep mode with an OTG ethernet controller connected to it. I have tried a whole bunch of things, and at last the sequence that I found that takes me ever so close to success is the following: 0. I have recompiled the kernel, enabling debug user control…

Is problem happening in both r16.3 and r17？ Btw, for r17, you need to apply the patch for usb otg [image] Eth0 is not working after R17 upgrade - WP76xx IoT Modules We have test build of R17 which is for fixing USB OTG. I have tested with USB thumb drive, it is OK to re…

Thank you for your reply. I forgot to add that I was already using the patch that you linked. diff --git a/arch/arm64/boot/dts/qcom/mdm9607-swi.dtsi b/arch/arm64/boot/dts/qcom/mdm9607-swi.dtsi index 9a5644ec4dea..815b3305ffd9 100644 --- a/arch/arm64/boot/dts/qcom/mdm9607-swi.dtsi +++ b/arch/arm64/b…

I am thinking that if this is regression bug in r17 …

If there are tests to do and patches you want me to apply, I will be more than happy to assist and help you. I’m not particularly skilled in C, but I suspect there’s something that gets configured by kernel/drivers/usb/phy/phy-msm-usb.c when hopping into host mode and that it doesn’t go back as it s…

I mean if it works in r16.3, that means the bug is introduced when porting to kernel 4.14, probably that can give a clue Btw, can you cut the vbus power by hardware instead of using the command?

Thank you for your reply. I was already unpowering VBUS via hardware, I am not aware of a method to cut power to VBUS via a console command. Regarding R16.3, I guess I can download it, apply the manual OTG control patch in the first post and try if it works there. I want to reiterate that, even if …

What if not setting “peripheral” but just cut powerof vbus? Will that be the same as as removing device from the uab otg directly? I am thinking you can start with usb thumb drive Once remove the drive physically, can the module go to sleep mode? And then if you cc onbect the usb thumb drive aft…

I found that I have similar test before in FW R16: [image] Selective Suspend mode issue with Timer FD Legato Application Framework Two things you can do to narrow down the root cause: see if this issue is only related to USB…

I have just tried to use the USB port in mangoh red board which is using HSIC like the picture above with FW R16.3, module can go to sleep mode when connected with USB thumb drive. So you might double check whether you can use this HSIC USB port.

Hi, sorry for the late response, the company was on break. I took a step back and reassessed if the bug was caused by the manual hsusb-otg-otg-control, so I asked my colleagues for a OTG cable with a switch on the ID pin, so that I could control the OTG status without unplugging cables. I’ve tested…

Entering KSLEEP=0 after triggering OTG Host is broken

IoT Modules WP Series

jyijyi April 30, 2025, 2:23pm 2

Is problem happening in both r16.3 and r17？

Btw, for r17, you need to apply the patch for usb otg

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Entering KSLEEP=0 after triggering OTG Host is broken

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