linux-kernel - Re: [PATCH v4 16/39] spi: dt-bindings: atmel,at91rm9200-spi: remove 9x60 compatible from list

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Message-ID: <98fedd3f-b55d-4ad1-b2ca-1efef0a19505@microchip.com>
Date: Wed, 28 Feb 2024 09:28:37 +0000
From: <Varshini.Rajendran@...rochip.com>
To: <tudor.ambarus@...aro.org>, <broonie@...nel.org>, <robh+dt@...nel.org>,
	<krzysztof.kozlowski+dt@...aro.org>, <conor+dt@...nel.org>,
	<Nicolas.Ferre@...rochip.com>, <alexandre.belloni@...tlin.com>,
	<claudiu.beznea@...on.dev>, <linux-spi@...r.kernel.org>,
	<devicetree@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.org>,
	<linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v4 16/39] spi: dt-bindings: atmel,at91rm9200-spi: remove
 9x60 compatible from list

Hi Tudor,

On 26/02/24 2:39 pm, Tudor Ambarus wrote:
> EXTERNAL EMAIL: Do not click links or open attachments unless you know the content is safe
> 
> On 23.02.2024 19:26, Varshini Rajendran wrote:
>> Remove microchip,sam9x60-spi compatible from the list as the driver used
>> has the compatible atmel,at91rm9200-spi and sam9x60 devices also use the
>> same compatible as fallback. So removing the microchip,sam9x60-spi
>> compatible from the list since it is not needed.
>>
> 
> I find this wrong. I though we shall add compatibles for each SoC. Are
> the registers and fields the same for the SPI IPs in these 2 SoCs? Even
> if they are the same, are you sure the IPs are integrated in the same way?

Which two SoCs are you referring to ?
I am not removing the device specific compatible. I am only removing the 
additional fallback compatible.

As in,

compatible = "microchip,sam9x7-spi", "atmel,at91rm9200-spi";

instead of,

compatible = "microchip,sam9x7-spi", "microchip,sam9x60-spi", 
"atmel,at91rm9200-spi";

for the sam9x7 devices.

Hope this is clear. If I have it wrong please let me know.

> 
>> Signed-off-by: Varshini Rajendran <varshini.rajendran@...rochip.com>
>> ---
>> Changes in v4:
>> - Elaborated the explanation in the commit message to justify the patch
>> ---
>>   Documentation/devicetree/bindings/spi/atmel,at91rm9200-spi.yaml | 1 -
>>   1 file changed, 1 deletion(-)
>>
>> diff --git a/Documentation/devicetree/bindings/spi/atmel,at91rm9200-spi.yaml b/Documentation/devicetree/bindings/spi/atmel,at91rm9200-spi.yaml
>> index 58367587bfbc..32e7c14033c2 100644
>> --- a/Documentation/devicetree/bindings/spi/atmel,at91rm9200-spi.yaml
>> +++ b/Documentation/devicetree/bindings/spi/atmel,at91rm9200-spi.yaml
>> @@ -22,7 +22,6 @@ properties:
>>             - const: atmel,at91rm9200-spi
>>         - items:
>>             - const: microchip,sam9x7-spi
>> -          - const: microchip,sam9x60-spi
>>             - const: atmel,at91rm9200-spi
>>
>>     reg:

-- 
Thanks and Regards,
Varshini Rajendran.