linux-kernel - Re: [PATCH] USB: ehci-omap: Select USB

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Message-ID: <516753B5.2040002@ahsoftware.de>
Date:	Fri, 12 Apr 2013 02:22:13 +0200
From:	Alexander Holler <holler@...oftware.de>
To:	balbi@...com
CC:	Roger Quadros <rogerq@...com>,
	Greg KH <gregkh@...uxfoundation.org>,
	Alan Stern <stern@...land.harvard.edu>,
	Linux USB Mailing List <linux-usb@...r.kernel.org>,
	Kernel development list <linux-kernel@...r.kernel.org>,
	"linux-omap@...r.kernel.org" <linux-omap@...r.kernel.org>
Subject: Re: [PATCH] USB: ehci-omap: Select USB_PHY

Am 11.04.2013 20:29, schrieb Felipe Balbi:

> and who said OMAP USB depends on CONFIG_USB_PHY ? Some platforms need to
> control a PHY and some don't.

I've read that so.

> Go check out kernel 2.6.39 (maybe even 3.1 and 3.2) and you'll see that
> we're much better off today where we can actually have multiple PHY
> drivers and multiple UDC drivers enabled (either as modules or
> built-in), but the fact is that changing all of this over takes time and
> sometimes people make mistakes, but that's alright, since we have the
> -rc series to catch those unwanted errors.

I'll still have to stick to 3.2 because nothing afterwards boots from
EHCI on my beagleboard.

> 
> Without the help of the rest of the community, though, it'll just get
> slower and slower. With the whole single zImage effort going on in the
> ARM land, things have gotten much more critical WRT getting rid of
> "selects" and turning legacy "drivers" into real drivers, not just a
> bunch of exported functions which a single architecture uses.
> 
> Add to that all the rework going on in the Gadget Framework, PHY layer
> and EHCI drivers (which now has a core re-usable library thanks to Alan
> Stern) and you have a lot of work to do.
> 
> Next time you consider ranting about something, use that 'frustration'
> and turn it into motivation to write patches, then we all win. Also

I frequently tried and gave up. But thanks for the good suggestions.

Regards,

Alexander

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