Subject: Re: [PATCH 4/8] arm64: dts: qcom: shikra: Add CAMSS node

From: Bryan O'Donoghue <[email-masked]>
Date: Fri, 29 May 2026 15:58:16 +0100

On 29/05/2026 15:52, Vikram Sharma wrote:
> Shikra and Agatti are not iommu compatible in terms of Stream ID. Only VFE SID is same
> for both. Agatti is documenting iommu for VFE, CDM and OPE. OPE is not yet enabled for
> Shikra and in my opinion it should be added as a separate yaml similar to Agatti.
> "https://lore.kernel.org/all/20260508-camss-isp-ope-v3-9- 
> [email-masked]/"
> 
> Regarding cdm iommu we have excluded it as we do not use it to program registers as of now.

Which will be a problem as soon as CDM is attempted to be enabled and 
yaml changes are dropped upstream.

Hmm then it seems to me that five is too many for Agatti's IOMMU set.

I'd like a number list so that we are discussing facts instead of 
nebulous hypotheticals.

For both Agatti and Shikra.

---
bod