linux-kernel - Re: [PATCH 05/10] mfd: rt5033: Apply preparatory changes before adding rt5033-charger driver

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Message-ID: <20230405150915.GN8371@google.com>
Date:   Wed, 5 Apr 2023 16:09:15 +0100
From:   Lee Jones <lee@...nel.org>
To:     Jakob Hauser <jahau@...ketmail.com>
Cc:     Sebastian Reichel <sre@...nel.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Beomho Seo <beomho.seo@...sung.com>,
        Chanwoo Choi <cw00.choi@...sung.com>,
        Stephan Gerhold <stephan@...hold.net>,
        Raymond Hackley <raymondhackley@...tonmail.com>,
        linux-pm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, ~postmarketos/upstreaming@...ts.sr.ht
Subject: Re: [PATCH 05/10] mfd: rt5033: Apply preparatory changes before
 adding rt5033-charger driver

On Sun, 02 Apr 2023, Jakob Hauser wrote:

> Hi Lee,
>
> On 05.03.23 17:14, Jakob Hauser wrote:
> > On 05.03.23 11:55, Lee Jones wrote:
> > > On Tue, 28 Feb 2023, Jakob Hauser wrote:
> > >
> > > > Order the register blocks to have the masks in descending manner.
> > > >
> > > > Add new defines for constant voltage shift (RT5033_CHGCTRL2_CV_SHIFT),
> > > > MIVR mask (RT5033_CHGCTRL4_MIVR_MASK), pre-charge current shift
> > > > (RT5033_CHGCTRL4_IPREC_SHIFT), internal timer disable
> > > > (RT5033_INT_TIMER_DISABLE), termination disable (RT5033_TE_DISABLE),
> > > > CFO disable (RT5033_CFO_DISABLE), UUG disable
> > > > (RT5033_CHARGER_UUG_DISABLE).
> > > >
> > > > The fast charge timer type needs to be written on mask 0x38
> > > > (RT5033_CHGCTRL3_TIMER_MASK). To avoid a bit shift on
> > > > application, change the
> > > > values of the timer types to fit the mask. Added the timout
> > > > duration as a
> > > > comment. And the timer between TIMER8 and TIMER12 is most likely
> > > > TIMER10, see
> > > > e.g. RT5036 [1] page 28 bottom.
> > > >
> > > > Add value options for MIVR (Minimum Input Voltage Regulation).
> > > >
> > > > Move RT5033_TE_ENABLE_MASK to the block "RT5033 CHGCTRL1
> > > > register", in order
> > > > to have the masks of the register collected there. To fit the
> > > > naming scheme,
> > > > rename it to RT5033_CHGCTRL1_TE_EN_MASK.
> > > >
> > > > Move RT5033_CHG_MAX_CURRENT to the block "RT5033 charger
> > > > fast-charge current".
> > > >
> > > > Add new defines RT5033_CV_MAX_VOLTAGE and
> > > > RT5033_CHG_MAX_PRE_CURRENT to the
> > > > blocks "RT5033 charger constant charge voltage" and "RT5033
> > > > charger pre-charge
> > > > current limits".
> > > >
> > > > In include/linux/mfd/rt5033.h, turn power_supply "psy" into a
> > > > pointer in order
> > > > to use it in devm_power_supply_register().
> > >
> > > Are there no present users to account for?
> >
> > At least none I'm aware of. Within the upstream kernel the
> > rt5033_charger power_supply didn't exist so far, the patchset is about
> > to implement it.
>
> Is there anything you want me to change or improve on this patch?

If there were I would have said. :)  Please fix up the other review
comments in the set and submit the next revision.

> > > > [1] https://media.digikey.com/pdf/Data%20Sheets/Richtek%20PDF/RT5036%20%20Preliminary.pdf
> > > >
> > > > Signed-off-by: Jakob Hauser <jahau@...ketmail.com>
> > > > ---
> > > >   include/linux/mfd/rt5033-private.h | 53 ++++++++++++++++++++----------
> > > >   include/linux/mfd/rt5033.h         |  2 +-
> > > >   2 files changed, 36 insertions(+),` 19 deletions(-)
>
> Kind regards,
> Jakob

--
Lee Jones [李琼斯]