linux-kernel - Re: [PATCH v3 4/6] i2c: npcm: Modify the client address assignment

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Message-ID: <CACD3sJbFyD1OeOX1Fwi97XpJXK6xO7=Ug1t+aMa=bQWwsaT+LA@mail.gmail.com>
Date: Mon, 16 Sep 2024 09:37:52 +0800
From: Tyrone Ting <warp5tw@...il.com>
To: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc: avifishman70@...il.com, tmaimon77@...il.com, tali.perry1@...il.com, 
	venture@...gle.com, yuenn@...gle.com, benjaminfair@...gle.com, 
	andi.shyti@...nel.org, wsa@...nel.org, rand.sec96@...il.com, 
	wsa+renesas@...g-engineering.com, tali.perry@...oton.com, 
	Avi.Fishman@...oton.com, tomer.maimon@...oton.com, KWLIU@...oton.com, 
	JJLIU0@...oton.com, kfting@...oton.com, openbmc@...ts.ozlabs.org, 
	linux-i2c@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 4/6] i2c: npcm: Modify the client address assignment

Hi Andy:

Your comments will be addressed.

Andy Shevchenko <andriy.shevchenko@...ux.intel.com> 於 2024年9月13日 週五 下午6:33寫道：
>
> On Fri, Sep 13, 2024 at 06:14:44PM +0800, warp5tw@...il.com wrote:
> > From: Tyrone Ting <kfting@...oton.com>
> >
> > Store the client address earlier since it might get called in
> > the i2c_recover_bus logic flow at the early stage of the function
> > npcm_i2c_master_xfer.
>
> We refer to the functions as func().
>
> ...
>
> > +     /*
> > +      * Previously, the address was stored w/o left-shift by one bit and
> > +      * with that shift in the following call to npcm_i2c_master_start_xmit.
> > +      *
> > +      * Since there are cases that the i2c_recover_bus gets called at the
> > +      * early stage of the function npcm_i2c_master_xfer, the address is
>
> Ditto.
>
> > +      * stored with the shift and used in the i2c_recover_bus call.
> > +      *
> > +      * The address is stored from bit 1 to bit 7 in the register for
> > +      * sending the i2c address later so it's left-shifted by 1 bit.
> > +      */
>
>
> --
> With Best Regards,
> Andy Shevchenko
>
>

Thank you.

Regards,
Tyrone