st_accel: iis328dq support?

st_accel: iis328dq support?

[Stefan Wahren]

Hi,
i want to use the ST IIS328DQ [1] on a ARM board with Linux. The iio 
subsystem has this st_accel driver. But i didn't find any reference to 
the IIS328DQ, so i started comparing the datasheets and found the ST 
LIS331DLH [2].

Since i didn't have the hardware yet, i've the following questions:

Does the st_accel driver support the IIS328DQ?
Should i choose the st,lis331dlh compatible for devicetree?

Thanks in advance
Stefan

[1] - https://www.st.com/resource/en/datasheet/iis328dq.pdf
[2] - https://www.st.com/resource/en/datasheet/cd00213470.pdf

Re: st_accel: iis328dq support?

[Jonathan Cameron]

On Fri, 6 Jul 2018 09:18:53 +0200
Stefan Wahren <stefan.wahren@i2se.com> wrote:

> Hi,
> i want to use the ST IIS328DQ [1] on a ARM board with Linux. The iio 
> subsystem has this st_accel driver. But i didn't find any reference to 
> the IIS328DQ, so i started comparing the datasheets and found the ST 
> LIS331DLH [2].

Given it reports the same WHO_AM_I of 0x32 it better be compatible
or they are being very unhelpful!

> 
> Since i didn't have the hardware yet, i've the following questions:
> 
> Does the st_accel driver support the IIS328DQ?

Not if it's not listed - though it might work.

> Should i choose the st,lis331dlh compatible for devicetree?

Ideal is to add the addition compatible string and device name etc
to the driver to support the part under this part number.

It's always nicer if a DT matches the part number on the part you
can see on the board!

Jonathan

p.s. If you don't fancy writing the patch, but will happily test
it really is compatible, let us know and I'm sure someone else
will pick it up if I don't.

> 
> Thanks in advance
> Stefan
> 
> [1] - https://www.st.com/resource/en/datasheet/iis328dq.pdf
> [2] - https://www.st.com/resource/en/datasheet/cd00213470.pdf
> --
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RE: st_accel: iis328dq support?

[Denis CIOCCA]

Hi Jonathan, Stefan,

LIS331DLH and IIS327DQ are compatible.
Mainly difference is the packaging since IIS is designed for industrial app=
lications.=20
If you can give it a shot will be great before adding the compatible string=
.

Br,
Denis


-----Original Message-----
From: Jonathan Cameron <jonathan.cameron@huawei.com>=20
Sent: Friday, July 6, 2018 10:02 AM
To: Stefan Wahren <stefan.wahren@i2se.com>
Cc: Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>; Denis CIOCCA <denis.ci=
occa@st.com>; Jonathan Cameron <jic23@kernel.org>; linux-iio@vger.kernel.or=
g
Subject: Re: st_accel: iis328dq support?

On Fri, 6 Jul 2018 09:18:53 +0200
Stefan Wahren <stefan.wahren@i2se.com> wrote:

> Hi,
> i want to use the ST IIS328DQ [1] on a ARM board with Linux. The iio=20
> subsystem has this st_accel driver. But i didn't find any reference to=20
> the IIS328DQ, so i started comparing the datasheets and found the ST=20
> LIS331DLH [2].

Given it reports the same WHO_AM_I of 0x32 it better be compatible or they =
are being very unhelpful!

>=20
> Since i didn't have the hardware yet, i've the following questions:
>=20
> Does the st_accel driver support the IIS328DQ?

Not if it's not listed - though it might work.

> Should i choose the st,lis331dlh compatible for devicetree?

Ideal is to add the addition compatible string and device name etc to the d=
river to support the part under this part number.

It's always nicer if a DT matches the part number on the part you can see o=
n the board!

Jonathan

p.s. If you don't fancy writing the patch, but will happily test it really =
is compatible, let us know and I'm sure someone else will pick it up if I d=
on't.

>=20
> Thanks in advance
> Stefan
>=20
> [1] - https://www.st.com/resource/en/datasheet/iis328dq.pdf
> [2] - https://www.st.com/resource/en/datasheet/cd00213470.pdf
> --
> To unsubscribe from this list: send the line "unsubscribe linux-iio"=20
> in the body of a message to majordomo@vger.kernel.org More majordomo=20
> info at  http://vger.kernel.org/majordomo-info.html

Re: st_accel: iis328dq support?

[Stefan Wahren]

Hi,


Am 06.07.2018 um 19:16 schrieb Denis CIOCCA:
> Hi Jonathan, Stefan,
>
> LIS331DLH and IIS327DQ are compatible.
> Mainly difference is the packaging since IIS is designed for industrial applications.
> If you can give it a shot will be great before adding the compatible string.

thanks for confirmation.

>
> Br,
> Denis
>
>
> -----Original Message-----
> From: Jonathan Cameron <jonathan.cameron@huawei.com>
> Sent: Friday, July 6, 2018 10:02 AM
> To: Stefan Wahren <stefan.wahren@i2se.com>
> Cc: Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>; Denis CIOCCA <denis.ciocca@st.com>; Jonathan Cameron <jic23@kernel.org>; linux-iio@vger.kernel.org
> Subject: Re: st_accel: iis328dq support?
>
> On Fri, 6 Jul 2018 09:18:53 +0200
> Stefan Wahren <stefan.wahren@i2se.com> wrote:
>
>> Hi,
>> i want to use the ST IIS328DQ [1] on a ARM board with Linux. The iio
>> subsystem has this st_accel driver. But i didn't find any reference to
>> the IIS328DQ, so i started comparing the datasheets and found the ST
>> LIS331DLH [2].
> Given it reports the same WHO_AM_I of 0x32 it better be compatible or they are being very unhelpful!
>
>> Since i didn't have the hardware yet, i've the following questions:
>>
>> Does the st_accel driver support the IIS328DQ?
> Not if it's not listed - though it might work.
>
>> Should i choose the st,lis331dlh compatible for devicetree?
> Ideal is to add the addition compatible string and device name etc to the driver to support the part under this part number.
>
> It's always nicer if a DT matches the part number on the part you can see on the board!
>
> Jonathan
>
> p.s. If you don't fancy writing the patch, but will happily test it really is compatible, let us know and I'm sure someone else will pick it up if I don't.

after receiption of the hardware and testing i will send a patch.

Best regards
Stefan

>
>> Thanks in advance
>> Stefan
>>
>> [1] - https://www.st.com/resource/en/datasheet/iis328dq.pdf
>> [2] - https://www.st.com/resource/en/datasheet/cd00213470.pdf
>> --
>> To unsubscribe from this list: send the line "unsubscribe linux-iio"
>> in the body of a message to majordomo@vger.kernel.org More majordomo
>> info at  http://vger.kernel.org/majordomo-info.html
>