linux-kernel - Re: [PATCH v1] mfd: max77705: support revision 0x2

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Message-ID: <20251023142144.GQ475031@google.com>
Date: Thu, 23 Oct 2025 15:21:44 +0100
From: Lee Jones <lee@...nel.org>
To: Ghatto <ghatto404@...il.com>
Cc: Krzysztof Kozlowski <krzk@...nel.org>,
	Chanwoo Choi <cw00.choi@...sung.com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1] mfd: max77705: support revision 0x2

On Thu, 23 Oct 2025, Ghatto wrote:

> On Thu, Oct 23, 2025 at 10:17 AM Lee Jones <lee@...nel.org> wrote:
> >
> > On Tue, 14 Oct 2025, Eric Gonçalves wrote:
> >
> > > Revision 0x2 has been tested on the r0q (Galaxy S22) board.
> > >
> > > Signed-off-by: Eric Gonçalves <ghatto404@...il.com>
> > > ---
> > >  drivers/mfd/max77705.c | 4 ++--
> > >  1 file changed, 2 insertions(+), 2 deletions(-)
> > >
> > > diff --git a/drivers/mfd/max77705.c b/drivers/mfd/max77705.c
> > > index e1a9bfd65856..5201a4c9c3f5 100644
> > > --- a/drivers/mfd/max77705.c
> > > +++ b/drivers/mfd/max77705.c
> > > @@ -105,8 +105,8 @@ static int max77705_i2c_probe(struct i2c_client *i2c)
> > >               return -ENODEV;
> > >
> > >       pmic_rev = pmic_rev_value & MAX77705_REVISION_MASK;
> > > -     if (pmic_rev != MAX77705_PASS3)
> > > -             return dev_err_probe(dev, -ENODEV, "Rev.0x%x is not tested\n", pmic_rev);
> > > +     if (pmic_rev == MAX77705_PASS1)
> > > +             return dev_err_probe(dev, -ENODEV, "Rev.0x1 is not tested\n");
> >
> > What happens when PASS4 is released but not tested?
> PASS4 doesn't exist from what I've seen on the max77705 header files.

Not yet.

But not having it in the defined does not mean one won't exist in the future.

-- 
Lee Jones [李琼斯]