linux-kernel - Re: [PATCH AUTOSEL 5.10 04/23] usb: usb251xb: add boost-up property support

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Date:   Wed, 2 Mar 2022 10:24:53 +0100
From:   Tommaso Merciai <tomm.merciai@...il.com>
To:     Richard Leitner <richard.leitner@...ux.dev>
Cc:     Pavel Machek <pavel@...x.de>, Sasha Levin <sashal@...nel.org>,
        linux-kernel@...r.kernel.org, stable@...r.kernel.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        richard.leitner@...data.com, linux-usb@...r.kernel.org
Subject: Re: [PATCH AUTOSEL 5.10 04/23] usb: usb251xb: add boost-up property
 support

On Mon, Feb 28, 2022 at 01:23:02PM +0100, Richard Leitner wrote:
> Hi,
> 
> On Sun, Feb 20, 2022 at 11:12:57AM +0100, Pavel Machek wrote:
> > Hi!
> > 
> > > From: Tommaso Merciai <tomm.merciai@...il.com>
> > > 
> > > [ Upstream commit 5c2b9c61ae5d8ad0a196d33b66ce44543be22281 ]
> > > 
> > > Add support for boost-up register of usb251xb hub.
> > > boost-up property control USB electrical drive strength
> > > This register can be set:
> > > 
> > >  - Normal mode -> 0x00
> > >  - Low         -> 0x01
> > >  - Medium      -> 0x10
> > >  - High        -> 0x11
> > > 
> > > (Normal Default)
> > > 
> > > References:
> > >  - http://www.mouser.com/catalog/specsheets/2514.pdf p29
> > 
> > Should the boost-up property be documented somewhere in the kernel
> > tree? We normally do that for device tree properties. And we normally
> > have properties used somewhere in the device tree. What is going on here?
> 
> AFAIK this patch was dropped for all stable releases, so this specific
> AUTOSEL message/thread is obsolete.
> 
> Nonetheless the DT documentation is also missing on master. Therefore
> I guess it should be provided asap 😉
> 
> Tommaso, can you provide a patch?

Hi All,
Sorry for delay, but I'm quite busy in these days.
Yes I can provide a patch about documentation in the
next days.

Regards,
Tommaso

> 
> regards;rl
> 
> > 
> > Best regards,
> > 							Pavel