Re: [PATCH 04/15] pinctrl: sh-pfc: Initial R-Car M3-N support

[Rob Herring]

On Tue, Feb 13, 2018 at 10:45:51AM +0100, Jacopo Mondi wrote:
> Add initial PFC support for R-Car M3-N (r8a77965) SoC.
> No groups or functions defined, just pin and registers enumeration.
> 
> Signed-off-by: Jacopo Mondi 
> ---
>  .../bindings/pinctrl/renesas,pfc-pinctrl.txt   |1 +

Reviewed-by: Rob Herring 

>  drivers/pinctrl/sh-pfc/Kconfig |5 +
>  drivers/pinctrl/sh-pfc/Makefile|1 +
>  drivers/pinctrl/sh-pfc/core.c  |6 +
>  drivers/pinctrl/sh-pfc/pfc-r8a77965.c  | 2728 
> 
>  drivers/pinctrl/sh-pfc/sh_pfc.h|1 +
>  6 files changed, 2742 insertions(+)
>  create mode 100644 drivers/pinctrl/sh-pfc/pfc-r8a77965.c

Re: [PATCH 04/15] pinctrl: sh-pfc: Initial R-Car M3-N support

[Geert Uytterhoeven]

Hi Jacopo,

On Wed, Feb 14, 2018 at 2:53 PM, jacopo mondi  wrote:
> On Wed, Feb 14, 2018 at 02:37:08PM +0100, Geert Uytterhoeven wrote:
>> On Tue, Feb 13, 2018 at 10:45 AM, Jacopo Mondi
>>  wrote:
>> > Add initial PFC support for R-Car M3-N (r8a77965) SoC.
>> > No groups or functions defined, just pin and registers enumeration.
>> >
>> > Signed-off-by: Jacopo Mondi 
>>
>> Thanks for your patch!
>>
>> Looks mostly OK to me.
>> You do want to compare with pfc-r8a7796.c: all differences not related to
>> SATA_DEVSL, FSCLK, DU_DOTCLKIN2/3, and PRESET are issues that were fixed
>> recently in pfc-r8a7796.c, and should apply to pfc-r8a77965.c, too.
>>
>
> I have used the M3-W tables with the exception of the pins/groups you
> mentioned, that are clearly marked as different in the datasheet. At
> least, this was my intention :)
>
> I used v4.15 M3-W PFC tables, should I look in v4.16-rc1 or in
> renesas-drivers for updates?

Always look at the latest version in my sh-pfc branch ;-)

>> That leaves us with very few differences only, but it won't be trivial to 
>> have
>> a combined M3-W/N PFC driver, I'm afraid.
>
> Takes a certain degree of grep-foo to clearly highlight differences
> between the two version. Do you have any script/tools you use to
> compare PFC tables a bit more easily?

The "--no-index" option of git diff allows to compare files against each
other, instead of against some other version.
Can be combined with wdiff:

$ git help wdiff
`git wdiff' is aliased to `diff --color-words'

soc-dts-diff (https://www.spinics.net/lists/linux-renesas-soc/msg22630.html)
also helps, even for drivers.

Gr{oetje,eeting}s,

Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- ge...@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds

Re: [PATCH 04/15] pinctrl: sh-pfc: Initial R-Car M3-N support

[jacopo mondi]

Hi Geert,
   thanks for review

On Wed, Feb 14, 2018 at 02:37:08PM +0100, Geert Uytterhoeven wrote:
> Hi Jacopo,
>
> On Tue, Feb 13, 2018 at 10:45 AM, Jacopo Mondi
>  wrote:
> > Add initial PFC support for R-Car M3-N (r8a77965) SoC.
> > No groups or functions defined, just pin and registers enumeration.
> >
> > Signed-off-by: Jacopo Mondi 
>
> Thanks for your patch!
>
> Looks mostly OK to me.
> You do want to compare with pfc-r8a7796.c: all differences not related to
> SATA_DEVSL, FSCLK, DU_DOTCLKIN2/3, and PRESET are issues that were fixed
> recently in pfc-r8a7796.c, and should apply to pfc-r8a77965.c, too.
>

I have used the M3-W tables with the exception of the pins/groups you
mentioned, that are clearly marked as different in the datasheet. At
least, this was my intention :)

I used v4.15 M3-W PFC tables, should I look in v4.16-rc1 or in
renesas-drivers for updates?

> That leaves us with very few differences only, but it won't be trivial to have
> a combined M3-W/N PFC driver, I'm afraid.
>

Takes a certain degree of grep-foo to clearly highlight differences
between the two version. Do you have any script/tools you use to
compare PFC tables a bit more easily?

Thanks
  j

> Gr{oetje,eeting}s,
>
> Geert
>
> --
> Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- 
> ge...@linux-m68k.org
>
> In personal conversations with technical people, I call myself a hacker. But
> when I'm talking to journalists I just say "programmer" or something like 
> that.
> -- Linus Torvalds