On Fri, Feb 21, 2025 at 09:56:59PM +0100, Lukasz Majewski wrote:
> Hi Conor,
>
> > On Fri, Feb 21, 2025 at 04:54:18PM +0100, Lukasz Majewski wrote:
> > > The measurement device on Liebherr's (LWE) boards is used to monitor
> > > the overall state of the device. It does have SPI interface to
> > > communicate with Linux host via spidev driver. Document the SPI DT
> > > binding as trivial SPI device.
> > >
> > > Signed-off-by: Lukasz Majewski <lukma@xxxxxxx>
> > > ---
> > > Documentation/devicetree/bindings/trivial-devices.yaml | 2 ++
> > > 1 file changed, 2 insertions(+)
> > >
> > > diff --git a/Documentation/devicetree/bindings/trivial-devices.yaml
> > > b/Documentation/devicetree/bindings/trivial-devices.yaml index
> > > fadbd3c041c8..5d736a9792c2 100644 ---
> > > a/Documentation/devicetree/bindings/trivial-devices.yaml +++
> > > b/Documentation/devicetree/bindings/trivial-devices.yaml @@ -161,6
> > > +161,8 @@ properties:
> > > - jedec,spd5118
> > > # Linear Technology LTC2488
> > > - lineartechnology,ltc2488
> > > + # Liebherr on-board measurement SPI device
> > > + - lwe,btt
^^
Are these two trailing spaces an artefact of the mail?
> >
> > How does "btt" translate to what the device actually is? Seems kinda
> > random!
>
> Btt is a family of devices (bttc, btt3, xea) - to control heavy duty
> machines.
>
> That was the original codename - conceived probably 30+ years ago.
If there's 3 different devices, how come there aren't 3 compatibles, 1
for each?
>
> > Also, where is patch 3, adding the lwe,btt to the spidev driver so
> > that it will probe?
>
> I've posted it to Mark Brown (and also linux-spi ML) for review.
>
> >
> > Cheers,
> > Conor.
> >
> > > # 5 Bit Programmable, Pulse-Width Modulator
> > > - maxim,ds1050
> > > # 10 kOhm digital potentiometer with I2C interface
> > > --
> > > 2.39.5
> > >
>
>
>
>
> Best regards,
>
> Lukasz Majewski
>
> --
>
> DENX Software Engineering GmbH, Managing Director: Erika Unter
> HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
> Phone: (+49)-8142-66989-59 Fax: (+49)-8142-66989-80 Email: lukma@xxxxxxx
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