Re: [PATCH v3 4/5] irqchip/gic-v3: Add Renesas R-Car Gen4 erratum workaround

[Thomas Gleixner]

On Wed, Jul 01 2026 at 22:37, Marek Vasut wrote:
> Renesas R-Car S4/V4H/V4M GIC600 integration has address width for AXI
> or APB interface configured to 32 bit, it can therefore access only
> the first 4 GiB of physical address space. This information comes from
> R-Car V4H Interface Specification sheet, there is currently no technical
> update number assigned to this limitation. Further input from hardware
> engineer indicates that this limitation also applies to R-Car S4 and V4M.
> Name the limitation GEN4GICITS1, and add a driver quirk to mitigate this
> limitation.
>
> The quirk is keyed on the combination of the GIC implementation
> and the platform identification in the device tree.
>
> Acked-by: Marc Zyngier <maz@xxxxxxxxxx>
> Co-developed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@xxxxxxxxxxx>
> Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@xxxxxxxxxxx>
> Signed-off-by: Marek Vasut <marek.vasut+renesas@xxxxxxxxxxx>

Assuming this goes through the PCI tree:

Acked-by: Thomas Gleixner <tglx@xxxxxxxxxx>