Re: [PATCH 13/23] dt-bindings: arm: add Tesla FSD ARM SoC

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On 14/01/2022 17:57, Alim Akhtar wrote:
> 
> 
>> -----Original Message-----
>> From: Krzysztof Kozlowski [mailto:krzysztof.kozlowski@xxxxxxxxxxxxx]
>> Sent: Thursday, January 13, 2022 6:03 PM
>> To: Alim Akhtar <alim.akhtar@xxxxxxxxxxx>; linux-arm-
>> kernel@xxxxxxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx
>> Cc: soc@xxxxxxxxxx; linux-clk@xxxxxxxxxxxxxxx; devicetree@xxxxxxxxxxxxxxx;
>> olof@xxxxxxxxx; linus.walleij@xxxxxxxxxx; catalin.marinas@xxxxxxx;
>> robh+dt@xxxxxxxxxx; s.nawrocki@xxxxxxxxxxx; linux-samsung-
>> soc@xxxxxxxxxxxxxxx; pankaj.dubey@xxxxxxxxxxx; linux-fsd@xxxxxxxxx
>> Subject: Re: [PATCH 13/23] dt-bindings: arm: add Tesla FSD ARM SoC
>>
>> On 13/01/2022 13:11, Alim Akhtar wrote:
>>> Add device tree bindings for the Tesla FSD ARM SoC.
>>>
>>> Cc: linux-fsd@xxxxxxxxx
>>> Signed-off-by: Alim Akhtar <alim.akhtar@xxxxxxxxxxx>
>>> ---
>>>  .../devicetree/bindings/arm/tesla.yaml        | 25 +++++++++++++++++++
>>>  1 file changed, 25 insertions(+)
>>>  create mode 100644 Documentation/devicetree/bindings/arm/tesla.yaml
>>>
>>> diff --git a/Documentation/devicetree/bindings/arm/tesla.yaml
>>> b/Documentation/devicetree/bindings/arm/tesla.yaml
>>> new file mode 100644
>>> index 000000000000..9f89cde76c85
>>> --- /dev/null
>>> +++ b/Documentation/devicetree/bindings/arm/tesla.yaml
>>> @@ -0,0 +1,25 @@
>>> +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause %YAML 1.2
>>> +---
>>> +$id:
>>> +https://protect2.fireeye.com/v1/url?k=2f0fac44-70949546-2f0e270b-0cc4
>>> +7a312ab0-50c826f7b1999a5f&q=1&e=bcbf277f-4e93-4705-8f6a-
>> 2beaa7eb31e2&
>>> +u=http%3A%2F%2Fdevicetree.org%2Fschemas%2Farm%2Ftesla.yaml%23
>>> +$schema:
>>> +https://protect2.fireeye.com/v1/url?k=d8493fe2-87d206e0-d848b4ad-0cc4
>>> +7a312ab0-f4e5046adc7da972&q=1&e=bcbf277f-4e93-4705-8f6a-
>> 2beaa7eb31e2&
>>> +u=http%3A%2F%2Fdevicetree.org%2Fmeta-schemas%2Fcore.yaml%23
>>> +
>>> +title: Tesla Full Self Driving(FSD) platforms device tree bindings
>>> +
>>> +maintainers:
>>> +  - Alim Akhtar <alim.akhtar@xxxxxxxxxxx>
>>> +  - linux-fsd@xxxxxxxxx
>>> +
>>> +properties:
>>> +  $nodename:
>>> +    const: '/'
>>> +  compatible:
>>> +    oneOf:
>>> +
>>> +      - description: FSD SoC board
>>> +        items:
>>> +          - const: tesla,fsd
>>
>> Either this is a SoC or a board compatible... Cannot be both.
>>
> Actually we call this as fsd board, so let me add accordingly compatible (fsd-baord) for board.
> Thanks

It's confusing and probably not accurate. In your series fsd is three
things in the same time: an architecture, a SoC and a board (DTS). The
last two should definitely be different. You probably have some eval
board (how it is called also in Tesla open source git) or some specific
product board.

I cannot judge how different this is from Exynos subarchitecture -
looking at patches it is not different - so I could understand a FSD
sub-arch with only one SoC.


Best regards,
Krzysztof



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