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[2/3] dt-bindings: mfd: add "fsl, ls1028a-qds-qixis-i2c" compatible to sl28cpld

Message ID 20220127172105.4085950-3-vladimir.oltean@nxp.com (mailing list archive)
State New, archived
Headers show
Series Use sl28cpld driver for the LS1028A-QDS QIXIS FPGA | expand

Commit Message

Vladimir Oltean Jan. 27, 2022, 5:21 p.m. UTC
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(-)

Comments

Rob Herring Feb. 11, 2022, 1:01 p.m. UTC | #1
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
Vladimir Oltean Feb. 11, 2022, 1:24 p.m. UTC | #2
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.
Michael Walle Feb. 11, 2022, 1:29 p.m. UTC | #3
Am 2022-02-11 14:24, schrieb Vladimir Oltean:
> 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.

Ahh didn't notice this. Yes that should probably go into an own binding.

>> 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 100% guarantee that is not the case ;)

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

-michael
diff mbox series

Patch

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
 
   reg:
     description: