Re: [PATCH v3 0/5] Introduce "non-pixel" sub node within iris video node

Vikash Garodia
2025-10-09T10:41:25Z

On 10/9/2025 2:41 PM, Krzysztof Kozlowski wrote:
> On 09/10/2025 17:38, Bryan O'Donoghue wrote:
>> On 09/10/2025 02:04, Krzysztof Kozlowski wrote:
>>>> The iommu description for this platform basically lacks the data that
>>>> _should_ be there -> FUNCTION_ID.
>>> No. The index tells that already.
>>
>> Hmm.
>>>> The rule is that the DT should really describe the hardware right ?
>>> It already does. Same as I wrote on IRC, DT already has all the
>>> information. Entry 0 has function ID-foo. Entry 1 has function ID-bar.
>>> Entry 2 has function ID-bar or whatever.
>>
>> That's the part I don't believe is true its a 1:Many relationship
>> between FUNCTION_ID:SIDs
>>
>> Let me check the docs...
>>
>> Here's the example I gave on IRC for lore
>>
>> SID 0x1940 maps to AC_VM_HLOS (Linux)
>> SID 0x1941 maps to AC_VM_CP_BITSTREAM - protected bitstream
>> SID 0x1945 maps to AC_WM_CP_BITSTREAM
>>
>
> I responded to this on IRC... Nothing proves here that 1:many cannot be
> done.

Kaanapali already has 1:Many relationship for FUNCTION_ID:SIDs.

>
> Best regards,
> Krzysztof