rk3328-rock64: USB ports are broken since commit ef05bcb6

rk3328-rock64: USB ports are broken since commit ef05bcb6

[Tomohiro Mayama]

Hello,

I'm experiencing a problem that Rock64 USB ports (both 2.0 and 3.0) are
not working.

After some investigation, I found that reverting a pin assignment change
by the commit ef05bcb6[1] seems to make functioning them again.
But according to the schematic[2], the pin assignment seems to be
correct. I suspect that the schematic might be incorrect.

There are some people experiencing the same problem in Arch Linux ARM
forum[3].

Is this a known issue?


[1] https://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip.git/diff/?id=ef05bcb60c1a8841e38c91923ba998181117a87c
[2] http://files.pine64.org/doc/rock64/ROCK64_Schematic_v2.0_20171019.pdf, page 8
[3] https://archlinuxarm.org/forum/viewtopic.php?f=23&t=13321


Regards,
Tomohiro Mayama

Re: rk3328-rock64: USB ports are broken since commit ef05bcb6

[Robin Murphy]

On 07/03/2019 13:52, Tomohiro Mayama wrote:
> Hello,
> 
> I'm experiencing a problem that Rock64 USB ports (both 2.0 and 3.0) are
> not working.
> 
> After some investigation, I found that reverting a pin assignment change
> by the commit ef05bcb6[1] seems to make functioning them again.
> But according to the schematic[2], the pin assignment seems to be
> correct. I suspect that the schematic might be incorrect.

Judging by that schematic, I suspect that the GPIO should probably be 
ACTIVE_LOW.

Robin.

> There are some people experiencing the same problem in Arch Linux ARM
> forum[3].
> 
> Is this a known issue?
> 
> 
> [1] https://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip.git/diff/?id=ef05bcb60c1a8841e38c91923ba998181117a87c
> [2] http://files.pine64.org/doc/rock64/ROCK64_Schematic_v2.0_20171019.pdf, page 8
> [3] https://archlinuxarm.org/forum/viewtopic.php?f=23&t=13321
> 
> 
> Regards,
> Tomohiro Mayama
> 
> _______________________________________________
> Linux-rockchip mailing list
> Linux-rockchip-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org
> http://lists.infradead.org/mailman/listinfo/linux-rockchip
> 

Re: rk3328-rock64: USB ports are broken since commit ef05bcb6

[Tomohiro Mayama]

On 2019/03/07 23:19, Robin Murphy wrote:
> Judging by that schematic, I suspect that the GPIO should probably be ACTIVE_LOW.

I tried patching according to your suggestion, and now it works fine.
I'm going to make a patch after this.

Thank you for your advice!

Regards,
Tomohiro Mayama