Re: [PATCH v2 2/3] usb: chipidea: imx: support disabling runtime-pm

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Hello Francesco,

On Thu, 4 May 2023 18:50:14 +0200
Francesco Dolcini <francesco@xxxxxxxxxx> wrote:

> Hello Luca,
> I guess your mail to Philippe bounced, let me try to answer since I am aware
> of the issue here.
> 
> On Thu, May 04, 2023 at 06:23:12PM +0200, Luca Ceresoli wrote:
> > I found this thread after several hours spent in debugging why USB host is
> > not detecting new devices on a custom board using the iMX6ULL Colibri
> > SoM.
> > 
> > My best workaround at the moment is:  
> We have the same workaround in our BSP since quite some time, see
> https://git.toradex.com/cgit/meta-toradex-bsp-common.git/tree/recipes-kernel/linux/linux-toradex-mainline-git/0002-drivers-chipidea-disable-runtime-pm-for-imx6ul.patch
> 
> > I haven't found any follow-up patches from you, so I'm wondering whether
> > you have made any progress on this issue.  
> You can find the latest discussion on that regard here
> https://lore.kernel.org/all/Y1vLpaxpc5WBCuGD@xxxxxxxxxxxxxxxxxxxxxxxxxxxx/

Thanks for this pointer! I have read the discussion and it was a bit
confusing, especially about whether the hardware can work at all.

Are you planning to continue on that work? I would be very glad to test
on product based on the i.MX6ULL Colibri module I am currently working
on.

Best regards,
Luca

-- 
Luca Ceresoli, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com



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