How to put the RC7620 modem in USB_SS mode? Does modem go to USB_SS automatically when nothing is keeping it awake? Or we need to configure it first to do that? I have R9 firmware in the RC7620 and I am communicating with it from Linux host. Regards, Sai.

does this document help? [image] QMI interface unresponsive for first command MC/EM Series I tried selective suspend setting on other module SL808x. see if this document can be reused: How to test the sleep mode for SL808X under Linux.docx (13.2 KB)

I am not sure if this document is complete… after finding the correct USB device, it just lists the nodes there and not much about how to set? I could find the correct node with my dmesg info: $ cd /sys/bus/usb/devices/1-1/ $ cat idVendor 1199 $ cat idProduct 68c0 $ cat manufacturer Sierra Wi…

Setting auto seems to be the selective suspend mode Did you monitor the currect consumption?

I see ~35 mA lower consumption, when I switch from ‘on’ to ‘auto’, so I believe this is the way to keep USB to SS? Just wanted to confirm. Regards, Sai.

You can check whether uart has response when usb-ss mode and at+ksleep=1

USB-SS mode

IoT Modules RC76

jyijyi November 24, 2023, 10:24am 2

does this document help?

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USB-SS mode

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