[PATCH v5] devicetree: bindings: uart: Add new compatible string for ZynqMP

[PATCH v5] devicetree: bindings: uart: Add new compatible string for ZynqMP

[Nava kishore Manne]

From: Nava kishore Manne <nava.manne@xilinx.com>

This patch Adds the new compatible string for ZynqMP SoC.

Signed-off-by: Nava kishore Manne <navam@xilinx.com>
---
Changes for v5:
		-Fixed some minor comments.
Changes for v4:
                -Modified the ChangeLog comment.
Changes for v3:
                -Added changeLog comment.
Changes for v2:
                -None

 Documentation/devicetree/bindings/serial/cdns,uart.txt | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/serial/cdns,uart.txt b/Documentation/devicetree/bindings/serial/cdns,uart.txt
index a3eb154..30c885c 100644
--- a/Documentation/devicetree/bindings/serial/cdns,uart.txt
+++ b/Documentation/devicetree/bindings/serial/cdns,uart.txt
@@ -1,7 +1,9 @@
 Binding for Cadence UART Controller
 
 Required properties:
-- compatible : should be "cdns,uart-r1p8", or "xlnx,xuartps"
+- compatible :
+  Use "cdns,uart-r1p8", or "xlnx,xuartps" for Zynq-7xxx SoC.
+  Use "cdns,uart-r1p12" for Zynq Ultrascale+ MPSoC.
 - reg: Should contain UART controller registers location and length.
 - interrupts: Should contain UART controller interrupts.
 - clocks: Must contain phandles to the UART clocks
-- 
2.1.2

[PATCH v5] devicetree: bindings: uart: Add new compatible string for ZynqMP

[Rob Herring]

On Mon, Sep 26, 2016 at 07:36:41PM +0530, Nava kishore Manne wrote:
> From: Nava kishore Manne <nava.manne@xilinx.com>
> 
> This patch Adds the new compatible string for ZynqMP SoC.
> 
> Signed-off-by: Nava kishore Manne <navam@xilinx.com>
> ---
> Changes for v5:
> 		-Fixed some minor comments.

Not a useful changelog. The point of these comments is to remind the 
reviewers of what they commented on.

> Changes for v4:
>                 -Modified the ChangeLog comment.
> Changes for v3:
>                 -Added changeLog comment.
> Changes for v2:
>                 -None
> 
>  Documentation/devicetree/bindings/serial/cdns,uart.txt | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/Documentation/devicetree/bindings/serial/cdns,uart.txt b/Documentation/devicetree/bindings/serial/cdns,uart.txt
> index a3eb154..30c885c 100644
> --- a/Documentation/devicetree/bindings/serial/cdns,uart.txt
> +++ b/Documentation/devicetree/bindings/serial/cdns,uart.txt
> @@ -1,7 +1,9 @@
>  Binding for Cadence UART Controller
>  
>  Required properties:
> -- compatible : should be "cdns,uart-r1p8", or "xlnx,xuartps"
> +- compatible :
> +  Use "cdns,uart-r1p8", or "xlnx,xuartps" for Zynq-7xxx SoC.

This is still not right. It was wrong before, but you are touching it so 
make it right. 

OR doesn't match the dts files. It is AND and the opposite order.

xlnx,xuartps wasn't the best naming, but it's in use so we'll have to 
live with it for zynq-7xxx.

> +  Use "cdns,uart-r1p12" for Zynq Ultrascale+ MPSoC.

What I meant here was this should have something like "xlnx,mpsoc-uart" 
as the first compatible with "cdns,uart-r1p12" as the second. Not sure 
if "mpsoc" is the best name here. 

Rob

[PATCH v5] devicetree: bindings: uart: Add new compatible string for ZynqMP

[Nava kishore Manne]

Hi Rob,

	Thanks for the review...

> > Changes for v5:
> > 		-Fixed some minor comments.
> 
> Not a useful changelog. The point of these comments is to remind the
> reviewers of what they commented on.

Ok will take care from next version onwards...

> >  Required properties:
> > -- compatible : should be "cdns,uart-r1p8", or "xlnx,xuartps"
> > +- compatible :
> > +  Use "cdns,uart-r1p8", or "xlnx,xuartps" for Zynq-7xxx SoC.
> 
> This is still not right. It was wrong before, but you are touching it so make it
> right.
> 
> OR doesn't match the dts files. It is AND and the opposite order.
> 
> xlnx,xuartps wasn't the best naming, but it's in use so we'll have to live with it
> for zynq-7xxx.
> 
> > +  Use "cdns,uart-r1p12" for Zynq Ultrascale+ MPSoC.
> 
> What I meant here was this should have something like "xlnx,mpsoc-uart"
> as the first compatible with "cdns,uart-r1p12" as the second. Not sure if
> "mpsoc" is the best name here.

You mean something like below
 Use "xlnx,xuartps" or "cdns,uart-r1p8" for Zynq-7xxx SoC.
Use "xlnx,zynqmp-uart" or " cdns,uart-r1p12" for Zynq Ultrascale+ MPSoC.

Please correct me if my understanding is wrong.

Regards,
Navakishore.

[PATCH v5] devicetree: bindings: uart: Add new compatible string for ZynqMP

[Rob Herring]

On Wed, Oct 5, 2016 at 7:23 AM, Nava kishore Manne
<nava.manne@xilinx.com> wrote:
> Hi Rob,
>
>         Thanks for the review...
>
>> > Changes for v5:
>> >             -Fixed some minor comments.
>>
>> Not a useful changelog. The point of these comments is to remind the
>> reviewers of what they commented on.
>
> Ok will take care from next version onwards...
>
>> >  Required properties:
>> > -- compatible : should be "cdns,uart-r1p8", or "xlnx,xuartps"
>> > +- compatible :
>> > +  Use "cdns,uart-r1p8", or "xlnx,xuartps" for Zynq-7xxx SoC.
>>
>> This is still not right. It was wrong before, but you are touching it so make it
>> right.
>>
>> OR doesn't match the dts files. It is AND and the opposite order.
>>
>> xlnx,xuartps wasn't the best naming, but it's in use so we'll have to live with it
>> for zynq-7xxx.
>>
>> > +  Use "cdns,uart-r1p12" for Zynq Ultrascale+ MPSoC.
>>
>> What I meant here was this should have something like "xlnx,mpsoc-uart"
>> as the first compatible with "cdns,uart-r1p12" as the second. Not sure if
>> "mpsoc" is the best name here.
>
> You mean something like below
>  Use "xlnx,xuartps" or "cdns,uart-r1p8" for Zynq-7xxx SoC.

As I said, it is not an OR condition. 'Use "xlnx,xuartps",
"cdns,uart-r1p8" for Zynq-7xxx SoC

> Use "xlnx,zynqmp-uart" or " cdns,uart-r1p12" for Zynq Ultrascale+ MPSoC.

Yes, but as above.

Rob