Re: [PATCH v4 4/7] dt-bindings: media: qcom: Add CAMSS Offline Processing Engine (OPE)

[Loic Poulain]

On Fri, Jul 10, 2026 at 12:20 PM Bryan O'Donoghue
<bryan.odonoghue@xxxxxxxxxx> wrote:
>
> On 10/07/2026 10:04, Loic Poulain wrote:
> > +        reg = <0x5c42400 0x200>,
> > +              <0x5c42600 0x200>,
> > +              <0x5c42800 0x4400>,
> > +              <0x5c46c00 0x190>,
> > +              <0x5c46d90 0xa00>;
> > +        reg-names = "top", "qos", "pipeline",
> > +                    "bus_read", "bus_write";
> > +
>
> Does this register space cover the entire OPE i.e. where are the CDM
> registers ?
>
> We should map those upfront even if they are not included in your first
> drop, we map CDM regs in the IFE even when not used.

My initial thought, especially when we first moved to the CAMSS
subnode model, was that CDM would be represented as a separate node
and referenced from OPE through a phandle. However, CDM may not be
generic enough to justify that level of abstraction/complexity.
Therefore, I'll reintroduce the CDM resources here instead.

Thanks,
Loic

>
> Also, I looks as though you're missing CDM S1 SID entries in your iommu
> definition.
>
> ---
> bod