Re: [PATCH v3] iio: accel: st_accel: add LIS2DS12

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On Sat, 1 Jun 2024 20:49:25 +0100
Conor Dooley <conor@xxxxxxxxxx> wrote:

> On Sun, Jun 02, 2024 at 12:56:41AM +0530, Kaustabh Chakraborty wrote:
> > diff --git a/drivers/iio/accel/st_accel_i2c.c b/drivers/iio/accel/st_accel_i2c.c
> > index fd3749871121..329a4d6fb2ec 100644
> > --- a/drivers/iio/accel/st_accel_i2c.c
> > +++ b/drivers/iio/accel/st_accel_i2c.c
> > @@ -102,6 +102,10 @@ static const struct of_device_id st_accel_of_match[] = {
> >  		.compatible = "st,lis2de12",
> >  		.data = LIS2DE12_ACCEL_DEV_NAME,
> >  	},
> > +	{
> > +		.compatible = "st,lis2ds12",
> > +		.data = LIS2DS12_ACCEL_DEV_NAME,
> > +	},
> >  	{
> >  		.compatible = "st,lis2hh12",
> >  		.data = LIS2HH12_ACCEL_DEV_NAME,  
> 
> > diff --git a/drivers/iio/accel/st_accel_spi.c b/drivers/iio/accel/st_accel_spi.c
> > index f72a24f45322..825adab37105 100644
> > --- a/drivers/iio/accel/st_accel_spi.c
> > +++ b/drivers/iio/accel/st_accel_spi.c
> > @@ -64,6 +64,10 @@ static const struct of_device_id st_accel_of_match[] = {
> >  		.compatible = "st,lis2dh12-accel",
> >  		.data = LIS2DH12_ACCEL_DEV_NAME,
> >  	},
> > +	{
> > +		.compatible = "st,lis2ds12",
> > +		.data = LIS2DS12_ACCEL_DEV_NAME,
> > +	},
> >  	{
> >  		.compatible = "st,lis3l02dq",
> >  		.data = LIS3L02DQ_ACCEL_DEV_NAME,  
> 
> Any new compatibles need to be documented in st,st-sensors.yaml

At the moment the st_sensors core is doing hard matching against whoami values
which isn't good.  That should ideally be fixed and the binding for this
device should use a fallback compatible if the statement about compatibility
is accurate.

It may just be a case of relaxing the check in st_sensors_verify_id()
to printing a warning not an error message and not returning an error code
(reserving error returns in that function for bus error etc.

That doesn't need to be in this patch though.  Just have the fallback
stuff in the binding and for now we can rely on matching the more
precise compatible.

Jonathan


> 
> Thanks,
> Conor.
> 





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