linux-kernel - Re: [PATCH v2 0/6] Add support for MSCC Ocelot i2c

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Date:   Tue, 31 Jul 2018 16:29:39 +0200
From:   Alexandre Belloni <alexandre.belloni@...tlin.com>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc:     Wolfram Sang <wsa@...-dreams.de>,
        Jarkko Nikula <jarkko.nikula@...ux.intel.com>,
        James Hogan <jhogan@...nel.org>,
        Paul Burton <paul.burton@...s.com>,
        Mika Westerberg <mika.westerberg@...ux.intel.com>,
        linux-i2c@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-mips@...ux-mips.org,
        Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
        Allan Nielsen <allan.nielsen@...rosemi.com>
Subject: Re: [PATCH v2 0/6] Add support for MSCC Ocelot i2c

On 31/07/2018 17:17:47+0300, Andy Shevchenko wrote:
> On Tue, 2018-07-31 at 15:47 +0200, Alexandre Belloni wrote:
> > Hi,
> > 
> > Because the designware IP was not able to handle the SDA hold time
> > before
> > version 1.11a, MSCC has its own implementation. Add support for it and
> > then add
> > i2c on ocelot boards.
> > 
> > I would expect patches 1 to 4 to go through the i2c tree and 5-6
> > through
> > the mips tree once patch 4 has been reviewed by the DT maintainers.
> > 
> 
> Thanks for an update, looks quite nice!
> I gave my tags wherever it is appropriate.
> 
> > Changes in v2:
> >  - removed first patch as a similar one is in i2c-next
> 
> >  - rebase on top of i2c-next
> 
> It seems you also took my patches which are not yet in i2c/for-next.
> 

That is right, I also based on https://patchwork.ozlabs.org/project/linux-i2c/list/?series=57551
but it is not a hard dependency.

> >  - Added two patches to implement ideas from Andy
> > 
> > Alexandre Belloni (6):
> >   i2c: designware: use generic table matching
> >   i2c: designware: move #ifdef CONFIG_OF to the top
> >   i2c: designware: allow IP specific sda_hold_time
> >   i2c: designware: add MSCC Ocelot support
> >   mips: dts: mscc: Add i2c on ocelot
> >   mips: dts: mscc: enable i2c on ocelot_pcb123
> > 
> >  .../bindings/i2c/i2c-designware.txt           |  9 ++-
> >  arch/mips/boot/dts/mscc/ocelot.dtsi           | 18 ++++++
> >  arch/mips/boot/dts/mscc/ocelot_pcb123.dts     |  6 ++
> >  drivers/i2c/busses/i2c-designware-common.c    |  2 +
> >  drivers/i2c/busses/i2c-designware-core.h      |  4 ++
> >  drivers/i2c/busses/i2c-designware-platdrv.c   | 62 +++++++++++++++---
> > -
> >  6 files changed, 87 insertions(+), 14 deletions(-)
> > 
> 
> -- 
> Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
> Intel Finland Oy

-- 
Alexandre Belloni, Bootlin (formerly Free Electrons)
Embedded Linux and Kernel engineering
https://bootlin.com