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FS#1858 - When the router reboots, the USB power supply does not turn off. #6782

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openwrt-bot opened this issue Sep 19, 2018 · 2 comments
Closed

FS#1858 - When the router reboots, the USB power supply does not turn off. #6782

openwrt-bot opened this issue Sep 19, 2018 · 2 comments
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Bebebe1974:

Router Gl-MT300N v.1 (MT7620), OpenWrt 18.06.0-rc1 r7090-d2aa3a1b62 / LuCI openwrt-18.06 branch (git-18.247.71242-9541751). When the router reboots, the USB power supply does not turn off. Therefore, for example, the modem connected to the USB port is not reset.
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robimarko:

This is not a bug as its the intended behavior.
You can see that GPIO is exported as HIGH so that USB would be powered as soon as possible.
https://github.com/openwrt/openwrt/blob/master/target/linux/ramips/dts/GL-MT300N-V2.dts#L68

And since it does not turn of at all during reboot,that also means that U-Boot has that same GPIO set to HIGH too to power the USB device during boot.

Please close this bug report and if you want to reset a modem simply toggle the GPIO off and the on in /sys/class/gpio

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Bebebe1974:

OK. I understood. Thank you.

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