[v2,0/6] Add support for MSCC Ocelot i2c

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.

Changes in v2:
 - removed first patch as a similar one is in i2c-next
 - rebase on top of i2c-next
 - 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(-)

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.

>  - 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(-)
>

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@linux.intel.com>
> Intel Finland Oy