Re: [PATCH 2/9] dt-bindings: i2c: qcom-cci: add description of a vbus-supply property

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On Mon, Feb 07, 2022 at 04:08:01PM +0200, Vladimir Zapolskiy wrote:
> On 2/4/22 9:32 PM, Mark Brown wrote:

> > Oh, good.  I forsee no problems here.  Probably this is something that
> > should be in the I2C core if it's going to be dynamically managed,
> > though just setting the supply as always on is probably more expedient.

> vbus-supply property has been added recently to another I2C master controller,
> see commit c021087c43c8 ("dt-binding: i2c: mt65xx: add vbus-supply property").

Note that some devices do have supplies that I/O is referenced against
and it's not clear that this isn't what's goin on here.

> It serves right the same purpose, and its handling is going to be done in i2c
> core, however since the latter is not yet completed, I would propose to add
> the property to i2c-bus subnodes of QCOM CCI and its support in the driver,
> later on both the property and its generic support would be better to see in
> i2c core.

The bindings are ABI, it doesn't seem like a good idea to add new ABI as
a temporary bodge.

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