Re: [PATCH 2/2] spi: spidev: add new mediatek support

[Michael Walle]

Hi,

Am 2023-01-23 10:37, schrieb Alexandre Mergnat:
> Le ven. 20 janv. 2023 à 09:20, Michael Walle <michael@xxxxxxxx> a écrit 
> :
> > From: Alexandre Mergnat <amergnat@xxxxxxxxxxxx>
> >
> > > Add the "mediatek,genio" compatible string to support Mediatek
> > > SPI controller on the genio boards.
> >
> > What is the use case of having the spidev? What if I want to
> > connect a device with a linux driver to it? It seems like you
> > just want to expose the SPI bus on the pin header. There was a
> > similar discussion for a mikrobus connector [1].
> Yes I want to expose the SPI on the pin header for two reasons:

Then "mediatek,genio" doesn't really describe the hardware, does it?
If you read that linked thread, NXP was also trying exposing the SPI
bus on a pin header. IMHO this is just misusing the userspace spi-dev.

That being said, exposing something on a pinheader (or on a standardized
connector) seems like a common thing and we should be working towards
a good solution. I still think Robs proposal for the mikrobus connector
makes also sense for your case.

-michael