linux-kernel - Re: [PATCH v3 00/10] regulator/mfd/clock: dt-bindings: Samsung S2M and S5M to dtschema

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Date:   Wed, 20 Oct 2021 18:09:40 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>
To:     Lee Jones <lee.jones@...aro.org>
Cc:     Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
        Sylwester Nawrocki <s.nawrocki@...sung.com>,
        Tomasz Figa <tomasz.figa@...il.com>,
        Chanwoo Choi <cw00.choi@...sung.com>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>, linux-clk@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-samsung-soc@...r.kernel.org
Subject: Re: [PATCH v3 00/10] regulator/mfd/clock: dt-bindings: Samsung S2M
 and S5M to dtschema

On 20/10/2021 18:08, Krzysztof Kozlowski wrote:
> On 20/10/2021 18:04, Lee Jones wrote:
>> On Wed, 06 Oct 2021, Krzysztof Kozlowski wrote:
>>
>>> Hi All,
>>>
>>> Changes since v2
>>> ================
>>> 1. Add Rob's tags.
>>> 2. Remove "regulator-name" from properties (all regulator dtschema).
>>> 3. Move "unevaluatedProperties" higher to make code easier to read (all regulator dtschema).
>>> 4. Add ref-type to op-mode property (patch 6: s5m8767 regulators).
>>>
>>> Changes since v1
>>> ================
>>> 1. Drop DTS patches - applied.
>>> 2. Fully remove bindings/regulator/samsung,s5m8767.txt .
>>> 3. Minor subject reformatting and few typos in text.
>>>
>>>
>>> Intro
>>> =====
>>> This patchset converts all devicetree bindings of Samsung S2M and S5M
>>> PMIC devices from txt to dtschema.
>>>
>>> It includes also two fixes because later conversion depends on it
>>> (contextually).
>>>
>>>
>>> Merging/dependencies
>>> ====================
>>> 1. Regulator related binding changes depend on first two commits (the
>>>    fixes), because of context.
>>> 2. The mfd bindings depend on clock and regulator bindings.
>>>
>>> The fixes and bindings changes (patches 1-10) should go via the same
>>> tree.  For example regulator or mfd tree.
>>>
>>> Another alternative is that regulator patches (1-2, 4-6) go via Mark who
>>> later gives MFD a stable branch/tag to pull. Then the clock and MFD
>>> bindings would go on top via MFD tree. Or any other setup you would like
>>> to have. :)
>>>
>>>
>>> Overview of devices
>>> ===================
>>> Essentially all Samsung S2M and S5M PMICs are very similar devices. They
>>> provide the same functionality: regulators, RTC, 2 or 3 clocks and main
>>> power management (e.g. power cut to SoC).
>>>
>>> The differences are mostly in registers layout and number of regulators.
>>>
>>> The drivers are built around one common part, mfd/sec-core.c, and share
>>> some drivers between devices:
>>> 1. MFD sec-core for all devices,
>>> 1. one clock driver for most of devices,
>>> 2. one RTC driver for all devices,
>>> 3. three regulator drivers.
>>>
>>> The regulator drivers were implementing slightly different features,
>>> therefore one regulator binding for all devices does not make much
>>> sense.  However the clock device binding can be shared.
>>>
>>> The final dtschema bindings try to implement this - share only the clock
>>> bindings.
>>>
>>> Best regards,
>>> Krzysztof
>>>
>>> Krzysztof Kozlowski (10):
>>>   regulator: s5m8767: do not use reset value as DVS voltage if GPIO DVS
>>>     is disabled
>>>   regulator: dt-bindings: samsung,s5m8767: correct
>>>     s5m8767,pmic-buck-default-dvs-idx property
>>>   dt-bindings: clock: samsung,s2mps11: convert to dtschema
>>>   regulator: dt-bindings: samsung,s2m: convert to dtschema
>>>   regulator: dt-bindings: samsung,s2mpa01: convert to dtschema
>>>   regulator: dt-bindings: samsung,s5m8767: convert to dtschema
>>>   dt-bindings: mfd: samsung,s2mps11: convert to dtschema
>>>   dt-bindings: mfd: samsung,s2mpa01: convert to dtschema
>>>   dt-bindings: mfd: samsung,s5m8767: convert to dtschema
>>>   dt-bindings: mfd: samsung,s5m8767: document buck and LDO supplies
>>
>> Looks like these are ready to be pushed.
>>
>> However, I am not in receipt of patches 1-2.
>>
>> Am I okay to merge 3-10 right now?
> 
> No. This is v3, but we need v4. Please:
> 1. Merge tag from Mark:
> https://lore.kernel.org/lkml/YWCT+YL%2F9qHbF9f0@sirena.org.uk/
> 
> 2. Then apply patches 7-10 (MFD bindings).

... patches 7-10 from that v4 of course. They start here:
https://lore.kernel.org/lkml/20211008113931.134847-4-krzysztof.kozlowski@canonical.com/

Best regards,
Krzysztof