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[00/20] pinctrl: ralink: fix ABI, improve driver, move to mediatek, improve dt-bindings

Message ID 20230303002850.51858-1-arinc.unal@arinc9.com
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Series pinctrl: ralink: fix ABI, improve driver, move to mediatek, improve dt-bindings | expand

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Arınç ÜNAL March 3, 2023, 12:28 a.m. UTC
[PATCH 00/20] pinctrl: ralink: fix ABI, improve driver, move to mediatek, improve dt-bindings

This is an ambitious effort I've been wanting to do for months.

Straight off the bat, I'm fixing the ABI that I broke a while back, by
reintroducing the ralink,rt2880-pinmux compatible string.

If you take a look at the schema for mt7620 and rt305x, some functions got
multiple lists for groups. Like refclk on mt7620. Because mt7620 and
mt7628/mt7688 SoCs use the same compatible string, it's impossible to
differentiate on the binding which SoC a devicetree is actually for.
Therefore, the binding will allow all groups listed for that function. For
example, if the SoC is mt7620, only the refclk function for the mdio group
can be used. If one were to put "spi cs1" as the function there, there
wouldn't be a warning.

I address this by introducing new compatible strings for these SoCs, then
split the schemas. I also separate mt7628/mt7688 from mt7620 pinctrl
subdriver in the process.

I wanted to split the rt305x driver too but too much code would be reused
so I backed down from that.

This platform from Ralink was acquired by MediaTek in 2011. Then, MediaTek
introduced new SoCs which utilise this platform. We're moving the Ralink
pinctrl driver to MediaTek, and rename the schemas for MediaTek SoCs to
mediatek.

I've renamed the ralink core driver to mtmips. I decided to call the core
mtmips as I've seen folks from MediaTek use the same name when they added
support for MT7621 pinctrl on U-Boot. Feel free to comment on this.

Arınç

RFC to v1:
- Address Rob and Krzysztof's reviews, add Rob's acked-by.
- More cleanups, hooray!
- Keep ralink,rt2880-pinmux deprecated.
- Deprecate ralink,mt7620-pinctrl. Another one bites the dust!
- More slight changes I can't currently remember to mention.

Arınç ÜNAL (20):
  pinctrl: ralink: reintroduce ralink,rt2880-pinmux compatible string
  pinctrl: ralink: {mt7620,mt7621}: add new mediatek compatible strings
  pinctrl: ralink: rt305x: add new compatible string for every SoC
  pinctrl: ralink: mt7620: split out to mt76x8
  pinctrl: ralink: move to mediatek as mtmips
  pinctrl: mediatek: remove OF_GPIO as reverse dependency
  dt-bindings: pinctrl: ralink: improve bindings
  dt-bindings: pinctrl: ralink: add new compatible strings
  dt-bindings: pinctrl: ralink: {mt7620,mt7621}: rename to mediatek
  dt-bindings: pinctrl: mediatek: mt6795: rename to mediatek,mt6795-pinctrl
  dt-bindings: pinctrl: mediatek: mt8186: rename to mediatek,mt8186-pinctrl
  dt-bindings: pinctrl: mediatek: mt8192: rename to mediatek,mt8192-pinctrl
  dt-bindings: pinctrl: mediatek: mt8195: rename to mediatek,mt8195-pinctrl
  dt-bindings: pinctrl: mediatek: fix naming inconsistency
  dt-bindings: pinctrl: {mediatek,ralink}: fix formatting
  dt-bindings: pinctrl: mediatek: drop quotes from referred schemas
  dt-bindings: pinctrl: mediatek: mt7986: fix patternProperties regex
  dt-bindings: pinctrl: ralink: rt305x: split binding
  dt-bindings: pinctrl: mediatek: mt7620: split binding
  MAINTAINERS: move ralink pinctrl to mediatek mips pinctrl

 .../pinctrl/mediatek,mt65xx-pinctrl.yaml        |  28 +-
 .../pinctrl/mediatek,mt6779-pinctrl.yaml        |  37 +-
 ...mt6795.yaml => mediatek,mt6795-pinctrl.yaml} |  39 +-
 .../pinctrl/mediatek,mt7620-pinctrl.yaml        | 298 ++++++++++++++
 ...inctrl.yaml => mediatek,mt7621-pinctrl.yaml} |  23 +-
 .../pinctrl/mediatek,mt7622-pinctrl.yaml        |  32 +-
 ...inctrl.yaml => mediatek,mt76x8-pinctrl.yaml} | 252 ++----------
 .../pinctrl/mediatek,mt7981-pinctrl.yaml        |  35 +-
 .../pinctrl/mediatek,mt7986-pinctrl.yaml        |  72 ++--
 .../pinctrl/mediatek,mt8183-pinctrl.yaml        |  30 +-
 ...mt8186.yaml => mediatek,mt8186-pinctrl.yaml} |  51 ++-
 .../pinctrl/mediatek,mt8188-pinctrl.yaml        |  76 ++--
 ...mt8192.yaml => mediatek,mt8192-pinctrl.yaml} |  53 +--
 ...mt8195.yaml => mediatek,mt8195-pinctrl.yaml} |  44 +--
 .../pinctrl/mediatek,mt8365-pinctrl.yaml        |  28 +-
 .../bindings/pinctrl/ralink,rt2880-pinctrl.yaml |  11 +-
 .../bindings/pinctrl/ralink,rt305x-pinctrl.yaml |  89 +----
 .../bindings/pinctrl/ralink,rt3352-pinctrl.yaml | 243 ++++++++++++
 .../bindings/pinctrl/ralink,rt3883-pinctrl.yaml |  11 +-
 .../bindings/pinctrl/ralink,rt5350-pinctrl.yaml | 206 ++++++++++
 MAINTAINERS                                     |  29 +-
 drivers/pinctrl/Kconfig                         |   1 -
 drivers/pinctrl/Makefile                        |   1 -
 drivers/pinctrl/mediatek/Kconfig                |  54 ++-
 drivers/pinctrl/mediatek/Makefile               |  63 +--
 drivers/pinctrl/mediatek/pinctrl-mt7620.c       | 138 +++++++
 .../{ralink => mediatek}/pinctrl-mt7621.c       |  32 +-
 drivers/pinctrl/mediatek/pinctrl-mt76x8.c       | 283 ++++++++++++++
 .../pinctrl-mtmips.c}                           |  90 ++---
 .../pinctrl-mtmips.h}                           |  16 +-
 .../{ralink => mediatek}/pinctrl-rt2880.c       |  21 +-
 .../{ralink => mediatek}/pinctrl-rt305x.c       |  47 +--
 .../{ralink => mediatek}/pinctrl-rt3883.c       |  29 +-
 drivers/pinctrl/ralink/Kconfig                  |  35 --
 drivers/pinctrl/ralink/Makefile                 |   8 -
 drivers/pinctrl/ralink/pinctrl-mt7620.c         | 391 -------------------
 36 files changed, 1723 insertions(+), 1173 deletions(-)

Comments

Linus Walleij March 6, 2023, 1:50 p.m. UTC | #1
On Fri, Mar 3, 2023 at 1:29 AM <arinc9.unal@gmail.com> wrote:

> [PATCH 00/20] pinctrl: ralink: fix ABI, improve driver, move to mediatek, improve dt-bindings
>
> This is an ambitious effort I've been wanting to do for months.

Good with ambitions :)

As long as Sergio is on board and can test the changes and as long
as the DT maintainers do not explicitly disapprove, I'm game to merge
this.

I guess you will respin on top of v6.3-rc1 when the first round of
non-RFC feedback is collected.

Yours,
Linus Walleij
Sergio Paracuellos March 6, 2023, 2:17 p.m. UTC | #2
On Mon, Mar 6, 2023 at 2:50 PM Linus Walleij <linus.walleij@linaro.org> wrote:
>
> On Fri, Mar 3, 2023 at 1:29 AM <arinc9.unal@gmail.com> wrote:
>
> > [PATCH 00/20] pinctrl: ralink: fix ABI, improve driver, move to mediatek, improve dt-bindings
> >
> > This is an ambitious effort I've been wanting to do for months.
>
> Good with ambitions :)
>
> As long as Sergio is on board and can test the changes and as long
> as the DT maintainers do not explicitly disapprove, I'm game to merge
> this.

For sure I am :-). Changes in code are pretty straightforward. The
real big change is just a split of mt7620 and mt76x8 in two different
files. But the split looks good to me. The other bulk of changes is
just moving files around. If DT maintainers are finally ok with the
changes I will try to make time to test this series in a rt5350 SoC
based board I think I have somewhere and on mt7621 SoC based one. Most
of my ralink boards are based on mt7621 so I don't have more platforms
to test this pinctrl changes :(.

>
> I guess you will respin on top of v6.3-rc1 when the first round of
> non-RFC feedback is collected.
>
> Yours,
> Linus Walleij

Thanks,
    Sergio Paracuellos
Arınç ÜNAL March 6, 2023, 2:55 p.m. UTC | #3
On 6.03.2023 16:50, Linus Walleij wrote:
> On Fri, Mar 3, 2023 at 1:29 AM <arinc9.unal@gmail.com> wrote:
> 
>> [PATCH 00/20] pinctrl: ralink: fix ABI, improve driver, move to mediatek, improve dt-bindings
>>
>> This is an ambitious effort I've been wanting to do for months.
> 
> Good with ambitions :)
> 
> As long as Sergio is on board and can test the changes and as long
> as the DT maintainers do not explicitly disapprove, I'm game to merge
> this.

Cheers.

> 
> I guess you will respin on top of v6.3-rc1 when the first round of
> non-RFC feedback is collected.

Sure, if it's necessary. Once I get feedback, I'll rebase it to your 
linusw/linux-pinctrl.git for-next tree, see if it needs manual changes. 
I'll let you know.

Arınç
Linus Walleij March 6, 2023, 10:09 p.m. UTC | #4
On Mon, Mar 6, 2023 at 3:56 PM Arınç ÜNAL <arinc.unal@arinc9.com> wrote:

> Sure, if it's necessary. Once I get feedback, I'll rebase it to your
> linusw/linux-pinctrl.git for-next tree, see if it needs manual changes.
> I'll let you know.

Hm my for-next branch is a mixdown for linux-next so use the branch
named "devel" instead.

Thanks!

Linus Walleij