From: Peter Chen <peter.chen-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
To: Arnd Bergmann <arnd-r2nGTMty4D4@public.gmane.org>
Cc: shawnguo-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org,
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linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
kernel-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org,
devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
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linux-usb-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
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mathieu.poirier-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org
Subject: Re: [PATCH v2 0/3] USB: add generic onboard USB HUB driver
Date: Tue, 15 Dec 2015 16:33:26 +0800 [thread overview]
Message-ID: <20151215083259.GA13809@shlinux2> (raw)
In-Reply-To: <3023844.AYbAYqvHUZ@wuerfel>
On Mon, Dec 14, 2015 at 10:35:19AM +0100, Arnd Bergmann wrote:
> On Monday 14 December 2015 15:26:11 Peter Chen wrote:
> > Hi all,
> >
> > There is a known issue that the USB code can't handle USB HUB's
> > external pins well, in that case, it may cause some onboard
> > USB HUBs can't work since their PHY's clock or reset pin needs to
> > operate.
> >
> > The user reported this issue at below:
> > http://www.spinics.net/lists/linux-usb/msg131502.html
> >
> > In this patch set, I add a generic onboard USB HUB driver to
> > handle this problem, the external signals will be configured
> > before usb controller's initialization, it much likes we did
> > it at board code before.
> >
> > The user needs to add this generic hub node at dts to support it.
> >
> > @The udoo users, help to test please.
>
> I still think need to do this properly by representing the hub
> device as a USB device, using power sequencing code like MMC does.
>
> Arnd
I will try to have a patch set for general onboard USB device.
--
Best Regards,
Peter Chen
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next prev parent reply other threads:[~2015-12-15 8:33 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-12-14 7:26 [PATCH v2 0/3] USB: add generic onboard USB HUB driver Peter Chen
[not found] ` <1450077974-22762-1-git-send-email-peter.chen-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
2015-12-14 7:26 ` [PATCH v2 1/3] usb: misc: generic_onboard_hub: " Peter Chen
2015-12-14 7:26 ` [PATCH v2 2/3] doc: dt-binding: generic onboard USB HUB Peter Chen
2015-12-14 7:26 ` [PATCH v2 3/3] ARM: dts: imx6qdl-udoo.dtsi: fix onboard USB HUB property Peter Chen
2015-12-14 9:35 ` [PATCH v2 0/3] USB: add generic onboard USB HUB driver Arnd Bergmann
2015-12-15 8:33 ` Peter Chen [this message]
2015-12-16 22:59 ` Rob Herring
[not found] ` <CAL_Jsq+KAF6FGyOyC0JzODsSVoK4+V6umpj=cANywgui_wOKMg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-12-16 23:13 ` Arnd Bergmann
2015-12-17 2:31 ` Peter Chen
2015-12-17 13:49 ` Rob Herring
[not found] ` <CAL_Jsq+t6NBh-zzwPH14MYBp6PGFaVv3540Urdn8q6D+erQkLA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-12-18 7:38 ` Peter Chen
2015-12-17 16:13 ` Alan Stern
[not found] ` <Pine.LNX.4.44L0.1512171103080.1675-100000-IYeN2dnnYyZXsRXLowluHWD2FQJk+8+b@public.gmane.org>
2015-12-18 7:42 ` Peter Chen
[not found] ` <CAL411-rK6qfkbQsSjvXH5VPAQAm4tMyD6fVTEgFQrpLHNGMXeA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-12-18 15:38 ` Alan Stern
[not found] ` <Pine.LNX.4.44L0.1512181030590.1682-100000-IYeN2dnnYyZXsRXLowluHWD2FQJk+8+b@public.gmane.org>
2015-12-21 8:33 ` Peter Chen
[not found] ` <CAL411-qKE=12VZAN9=tUWPqkC5BfSgpQb9aNgCU6rmPLasXNHQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-12-21 19:40 ` Alan Stern
[not found] ` <Pine.LNX.4.44L0.1512211436030.1618-100000-pYrvlCTfrz9XsRXLowluHWD2FQJk+8+b@public.gmane.org>
2015-12-22 3:32 ` Peter Chen
[not found] ` <CAL411-oVEbh1cDnUugs0Rxrt1opvH-NeffjcmeMy-OuZS38CbA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-12-22 15:48 ` Alan Stern
2016-01-05 14:36 ` Rob Herring
[not found] ` <CAL_Jsq+P8SBmWzNURrmNgz8soCn4QPOPid4SXF0a3TYL_SH27A-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2016-01-05 15:59 ` Alan Stern
2016-01-06 3:20 ` Peter Chen
2016-01-07 14:18 ` Rob Herring
[not found] ` <CAL_Jsq+rqv1NBSUToX5BsbnBp_goUWhdczU7ETSxOrJ5D4D1rw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2016-01-08 3:33 ` Peter Chen
2016-02-24 9:22 ` Peter Chen
2015-12-14 11:26 ` Fabio Estevam
[not found] ` <CAOMZO5CfBKuJ584jwbg98s9tn+0Z7W0nOaZnUkm4cJUSvNGTZw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-12-15 6:28 ` Peter Chen
2015-12-15 11:32 ` Fabio Estevam
[not found] ` <CAOMZO5DiRzfy5dULh0C7qU2KUM-i8fBh6W5rS9zOTHJJK6fqwg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-12-16 4:11 ` Peter Chen
2015-12-16 10:11 ` Fabio Estevam
[not found] ` <CAOMZO5An3CK-a3NQtOF3nnPc8vzu2+SKnfJ=iOuAhjCBvZwToQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-12-16 20:05 ` Maciej S. Szmigiero
[not found] ` <5671C40F.3000000-APzI5cXaD1zVlRWJc41N0YvC60bnQu0Y@public.gmane.org>
2015-12-17 6:57 ` Peter Chen
2015-12-18 23:48 ` Maciej S. Szmigiero
[not found] ` <56749B58.4040306-APzI5cXaD1zVlRWJc41N0YvC60bnQu0Y@public.gmane.org>
2015-12-21 8:44 ` Peter Chen
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