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SubjectRe: [PATCH 2/3] dt-bindings: mfd: add "fsl,ls1028a-qds-qixis-i2c" compatible to sl28cpld
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On Fri, Feb 11, 2022 at 07:01:42AM -0600, Rob Herring wrote:
> On Thu, Jan 27, 2022 at 07:21:04PM +0200, Vladimir Oltean wrote:
> > The LS1028A-QDS QIXIS FPGA has no problem working with the
> > simple-mfd-i2c.c driver, so extend the list of compatible strings to
> > include that part.
> >
> > Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
> > ---
> > Documentation/devicetree/bindings/mfd/kontron,sl28cpld.yaml | 4 +++-
> > 1 file changed, 3 insertions(+), 1 deletion(-)
> >
> > diff --git a/Documentation/devicetree/bindings/mfd/kontron,sl28cpld.yaml b/Documentation/devicetree/bindings/mfd/kontron,sl28cpld.yaml
> > index eb3b43547cb6..8c1216eb36ee 100644
> > --- a/Documentation/devicetree/bindings/mfd/kontron,sl28cpld.yaml
> > +++ b/Documentation/devicetree/bindings/mfd/kontron,sl28cpld.yaml
> > @@ -16,7 +16,9 @@ description: |
> >
> > properties:
> > compatible:
> > - const: kontron,sl28cpld
> > + enum:
> > + - fsl,ls1028a-qds-qixis-i2c
> > + - kontron,sl28cpld
>
> Is there some relationship between these besides happening to use the
> same driver? Sharing a generic driver is not a reason to have the same
> binding doc.
>
> Your DT has a mux-controller which is undocuemnted in this binding.
>
> Rob

I'd guess they are both programmable FPGA's/CPLD's that are used for
board control. What I don't know is whether the sources for the Kontron
bit stream are derived in any way from the QIXIS.

I can look into adding a separate binding doc for the QIXIS anyway.
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