Re: [PATCH 1/7] irqchip/gic-v3: Add a DMA Non-Coherent flag

[Lucas Tanure]

On 10-03-2023 08:56, Marc Zyngier wrote:
> On 2023-03-10 08:05, Lucas Tanure wrote:
> > The GIC600 integration in RK356x, used in rk3588, doesn't support
> > any of the shareability or cacheability attributes, and requires
> > both values to be set to 0b00 for all the ITS and Redistributor
> > tables.
> >
> > This is loosely based on prior work from XiaoDong Huang and
> > Peter Geis fixing this issue specifically for Rockchip 356x.
>
> No.
>
> If we are going to do *anything* about this thing, it is by
> describing the actual topology.
What do you mean by describe the topology?
What kind of information are you expecting?


And it has to work for both DT
> and ACPI.
>
> Alternatively, this is an erratum.
>
>          M.