Re: [PATCH] mfd: da9063: occupy second I2C address, too

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On Fri, 13 Jun 2025, Lee Jones wrote:

> On Sun, 01 Jun 2025, Wolfram Sang wrote:
> 
> > Even though we don't use it yet, we should mark the second I2C address
> > this device is listening to as used.
> 
> Could we have a bit more information please?
> 
> What happens if we don't do this?
> 
> > Signed-off-by: Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx>
> > Reviewed-by: Peter Rosin <peda@xxxxxxxxxx>
> > Reviewed-by: Bartosz Golaszewski <bgolaszewski@xxxxxxxxxxxx>
> > Reviewed-by: Kieran Bingham <kieran.bingham+renesas@xxxxxxxxxxxxxxxx>
> > ---
> > 
> > This patch could not be applied 6 years ago because of a missing
> > dependency. It has arrived meanwhile ;)

Link to dep for ease of review (and for the nosey).  =:-)

> >  drivers/mfd/da9063-i2c.c | 2 ++
> >  1 file changed, 2 insertions(+)
> > 
> > diff --git a/drivers/mfd/da9063-i2c.c b/drivers/mfd/da9063-i2c.c
> > index c6235cd0dbdc..c74702cf8a77 100644
> > --- a/drivers/mfd/da9063-i2c.c
> > +++ b/drivers/mfd/da9063-i2c.c
> > @@ -454,6 +454,8 @@ static int da9063_i2c_probe(struct i2c_client *i2c)
> >  		}
> >  	}
> 
> Maybe a comment for future readers wondering why we're obtaining this
> unused I2C address.  It may prevent others from removing it as
> superfluous.
> 
> > +	devm_i2c_new_dummy_device(&i2c->dev, i2c->adapter, i2c->addr + 1);
> > +
> >  	return da9063_device_init(da9063, i2c->irq);
> >  }
> >  
> > -- 
> > 2.47.2
> > 
> 
> -- 
> Lee Jones [李琼斯]

-- 
Lee Jones [李琼斯]




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