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

[Luca Ceresoli]

Hello Jun, Francesco,

On Mon, 8 May 2023 13:17:11 +0200
Francesco Dolcini <francesco at dolcini.it> wrote:

> On Sat, May 06, 2023 at 09:02:39AM +0000, Jun Li wrote:
> > > -----Original Message-----
> > > From: Francesco Dolcini <francesco at dolcini.it>
> > > Sent: Friday, May 5, 2023 7:00 PM
> > > To: Luca Ceresoli <luca.ceresoli at bootlin.com>; Jun Li <jun.li at nxp.com>
> > > Cc: Francesco Dolcini <francesco at dolcini.it>; devicetree at vger.kernel.org;
> > > festevam at gmail.com; gregkh at linuxfoundation.org; kernel at pengutronix.de;
> > > linux-arm-kernel at lists.infradead.org; dl-linux-imx <linux-imx at nxp.com>;
> > > linux-kernel at vger.kernel.org; linux-usb at vger.kernel.org;
> > > peter.chen at nxp.com; robh+dt at kernel.org; s.hauer at pengutronix.de;
> > > shawnguo at kernel.org; Krzysztof Kozlowski <krzysztof.kozlowski at linaro.org>;
> > > Francesco Dolcini <francesco.dolcini at toradex.com>
> > > Subject: Re: [PATCH v2 2/3] usb: chipidea: imx: support disabling runtime-pm
> > > 
> > > On Fri, May 05, 2023 at 12:06:18PM +0200, Luca Ceresoli wrote:  
> > > > On Fri, 5 May 2023 09:49:16 +0000
> > > > Jun Li <jun.li at nxp.com> wrote:  
> > > > > Is your board design similar like Francesco's as below?  
> > > >
> > > > Possibly, but I'm afraid I can't say: I am using the Toradex Colibri
> > > > i.MX6ULL SoM, whose schematics are not public.  
> > > 
> > > I can confirm that it's the same.  
> > 
> > Thanks Francesco for the confirmation, had a check with design team,
> > there is no status bit which can be used to judge the VDD_USB_CAP is
> > powered or not, so we have to add a board level dts property to tell
> > this usb phy driver to bypass MXS_PHY_DISCONNECT_LINE_WITHOUT_VBUS.
> > 
> > Before send a formal patch, I want to confirm this should work for your
> > HW design, like below simple hack:  
> 
> Thanks Li Jun, I tested it with v6.3.1 kernel and it's all good.
> I would be happy to test the patch as soon as you send it.

Thanks Jun, it works here as well, on 6.1.27!

Best regards,
Luca

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