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

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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.




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