linux-kernel - Re: [PATCH 3/4] dt-bindings: display: ti,am65x-dss: Add OLDI properties for AM625 DSS

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Date: Tue, 14 May 2024 10:40:03 +0530
From: Aradhya Bhatia <a-bhatia1@...com>
To: Rob Herring <robh@...nel.org>
CC: Tomi Valkeinen <tomi.valkeinen@...asonboard.com>,
        Jyri Sarha
	<jyri.sarha@....fi>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard <mripard@...nel.org>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        Neil Armstrong <neil.armstrong@...aro.org>,
        Laurent Pinchart
	<Laurent.pinchart@...asonboard.com>,
        David Airlie <airlied@...il.com>, Daniel
 Vetter <daniel@...ll.ch>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor
 Dooley <conor+dt@...nel.org>,
        DRI Development List
	<dri-devel@...ts.freedesktop.org>,
        Devicetree List
	<devicetree@...r.kernel.org>,
        Linux Kernel List
	<linux-kernel@...r.kernel.org>,
        Nishanth Menon <nm@...com>, Vignesh
 Raghavendra <vigneshr@...com>,
        Praneeth Bajjuri <praneeth@...com>, Udit Kumar
	<u-kumar1@...com>,
        Francesco Dolcini <francesco@...cini.it>,
        Alexander
 Sverdlin <alexander.sverdlin@...mens.com>,
        Randolph Sapp <rs@...com>, Devarsh
 Thakkar <devarsht@...com>,
        Jayesh Choudhary <j-choudhary@...com>, Jai Luthra
	<j-luthra@...com>
Subject: Re: [PATCH 3/4] dt-bindings: display: ti,am65x-dss: Add OLDI
 properties for AM625 DSS



On 14/05/24 01:05, Rob Herring wrote:
> On Sun, May 12, 2024 at 01:00:54AM +0530, Aradhya Bhatia wrote:
>> The DSS in AM625 SoC has 2 OLDI TXes. Refer the OLDI schema to add the
>> properties.
>>
>> Signed-off-by: Aradhya Bhatia <a-bhatia1@...com>
>> ---
>>  .../bindings/display/ti/ti,am65x-dss.yaml     | 136 +++++++++++++++++-
>>  1 file changed, 135 insertions(+), 1 deletion(-)
>>
>> diff --git a/Documentation/devicetree/bindings/display/ti/ti,am65x-dss.yaml b/Documentation/devicetree/bindings/display/ti/ti,am65x-dss.yaml
>> index 399d68986326..4aa2de59b32b 100644
>> --- a/Documentation/devicetree/bindings/display/ti/ti,am65x-dss.yaml
>> +++ b/Documentation/devicetree/bindings/display/ti/ti,am65x-dss.yaml
>> @@ -85,12 +85,30 @@ properties:
>>  
>>      properties:
>>        port@0:
>> -        $ref: /schemas/graph.yaml#/properties/port
>> +        $ref: /schemas/graph.yaml#/$defs/port-base
> 
> You don't need this change. You aren't adding any extra properties.

Alright. I will make the change.

> 
>>          description:
>>            For AM65x DSS, the OLDI output port node from video port 1.
>>            For AM625 DSS, the internal DPI output port node from video
>>            port 1.
>>            For AM62A7 DSS, the port is tied off inside the SoC.
>> +        properties:
>> +          endpoint@0:
>> +            $ref: /schemas/graph.yaml#/properties/endpoint
>> +            description:
>> +              For AM625 DSS, VP Connection to OLDI0.
>> +              For AM65X DSS, OLDI output from the SoC.
>> +
>> +          endpoint@1:
>> +            $ref: /schemas/graph.yaml#/properties/endpoint
>> +            description:
>> +              For AM625 DSS, VP Connection to OLDI1.
>> +
>> +        anyOf:
>> +          - required:
>> +              - endpoint
>> +          - required:
>> +              - endpoint@0
>> +              - endpoint@1
>>  
>>        port@1:
>>          $ref: /schemas/graph.yaml#/properties/port
>> @@ -112,6 +130,22 @@ properties:
>>        Input memory (from main memory to dispc) bandwidth limit in
>>        bytes per second
>>  
>> +  oldi-txes:
>> +    type: object
>> +    properties:
>> +      "#address-cells":
>> +        const: 1
>> +
>> +      "#size-cells":
>> +        const: 0
>> +
>> +    patternProperties:
>> +      '^oldi_tx@[0-1]$':
>> +        type: object
>> +        $ref: ti,am625-oldi.yaml#
>> +        unevaluatedProperties: false
>> +        description: OLDI transmitters connected to the DSS VPs
> 
> Connected to is not part of the DSS. I don't think these nodes belong 
> here as mentioned in the other patch.
> 

Replied to this in patch 2/4 to keep the discussion in one thread.


Regards
Aradhya