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FS#2775 - Upgrade to 19.07 breaks wireless on AR9 SoC (dwc2 USB issue) #7685

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openwrt-bot opened this issue Jan 25, 2020 · 1 comment
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@openwrt-bot
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itimees:

Upgrading Lantiq xway AR9 board (zyxel_p-2601hn) to version 19.07 will break wireless radio due to dwc2 USB driver HANG! issue in kernel 4.19.

Wifi works fine on 18.06 (kernel 4.9).

[ 3.989707] dwc2 1e101000.usb: 1e101000.usb supply vusb_d not found, using dummy regulator
[ 3.996765] dwc2 1e101000.usb: 1e101000.usb supply vusb_a not found, using dummy regulator
[ 4.005083] dwc2 1e101000.usb: dwc2_core_reset() HANG! Soft Reset GRSTCTL=80000001
[ 4.147874] dwc2 1e101000.usb: DWC OTG Controller
[ 4.151186] dwc2 1e101000.usb: new USB bus registered, assigned bus number 1
[ 4.158253] dwc2 1e101000.usb: irq 62, io mem 0x1e101000
[ 4.163552] dwc2 1e101000.usb: startup error -517
[ 4.168125] dwc2 1e101000.usb: USB bus 1 deregistered
[ 4.173284] dwc2 1e101000.usb: dwc2_hcd_init() FAILED, returning -517

@openwrt-bot
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itimees:

Although there seem to be patches already in trunk referring to [[https://git.openwrt.org/?p=openwrt/openwrt.git;a=commit;h=eb72439dbb4acc936cbabf16cb0683a5a230e897|dwc2 USB]] issues, it still doesn't work on zyxel_p-2601hn trunk snapshot (r12106-c6c4701def), error is the same.
root@OpenWrt:/# modprobe dwc2
[ 759.103022] dwc2 1e101000.usb: 1e101000.usb supply vusb_d not found, using dummy regulator
[ 759.116150] dwc2 1e101000.usb: 1e101000.usb supply vusb_a not found, using dummy regulator
[ 759.124550] dwc2 1e101000.usb: dwc2_core_reset() HANG! Soft Reset GRSTCTL=80000001
[ 759.267993] dwc2 1e101000.usb: DWC OTG Controller
[ 759.271311] dwc2 1e101000.usb: new USB bus registered, assigned bus number 1
[ 759.278386] dwc2 1e101000.usb: irq 62, io mem 0x1e101000
[ 759.283687] dwc2 1e101000.usb: startup error -517
[ 759.288259] dwc2 1e101000.usb: USB bus 1 deregistered
[ 759.293423] dwc2 1e101000.usb: dwc2_hcd_init() FAILED, returning -517
root@OpenWrt:/#

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