linux-kernel - Re: [PATCH v3 0/3] i2c: designware: improve performance for transfers

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Date:	Mon, 15 Aug 2016 12:34:14 +0000
From:	"De Marchi, Lucas" <lucas.demarchi@...el.com>
To:	"christian.ruppert@...tech.com" <christian.ruppert@...tech.com>,
	"linux-i2c@...r.kernel.org" <linux-i2c@...r.kernel.org>
CC:	"mika.westerberg@...ux.intel.com" <mika.westerberg@...ux.intel.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"wsa@...-dreams.de" <wsa@...-dreams.de>,
	"jarkko.nikula@...ux.intel.com" <jarkko.nikula@...ux.intel.com>
Subject: Re: [PATCH v3 0/3] i2c: designware: improve performance for
 transfers

On Fri, 2016-08-12 at 16:59 +0200, Christian Ruppert wrote:
> On 29.07.2016 00:03, Lucas De Marchi wrote:
> > 
> > This can be considered a v3 of "i2c: designware: do not disable
> > adapter after
> > transfer". Differences are:
> > 
> >     - Now there's a first patch that does not depend on IC_TAR
> > being dynamically
> >       enabled/disabled: it just doesn't wait for the state change
> > when not needed.
> > 
> >     - We added a patch that allows detecting if HW supports the
> > dynamic TAR updates
> > 
> >     - In the last patch the bits were changed as suggested by
> > Jarkko.
> > 
> >     - This is tested on BayTrail and CherryTrail, both of them
> > returning true for
> >       "dynamically update TAR"
> 
> Tested-by: Christian Ruppert <christian.ruppert@...tech.com>
> on TB101 with Linux-4.7
> 
> Seems to work perfectly now, congratulations and thanks for your
> patience with our platform... This was a hard one!

Awesome, thanks for testing this series.

Looks like I forgot to CC Wolfram. CC'ing now on this cover letter, let
me know if you also need the individual patches.


Lucas De Marchi

> 
> > 
> > José Roberto de Souza (1):
> >   i2c: designware: wait for disable/enable only if necessary
> > 
> > Lucas De Marchi (2):
> >   i2c: designware: detect when dynamic tar update is possible
> >   i2c: designware: do not disable adapter after transfer
> > 
> >  drivers/i2c/busses/i2c-designware-core.c | 103
> > +++++++++++++++++++++----------
> >  drivers/i2c/busses/i2c-designware-core.h |   1 +
> >  2 files changed, 72 insertions(+), 32 deletions(-)
> > 
>