Re: [RFC][PATCH] arm64: dts: renesas: r8a779f0: Add GICv3 ITS and update PCIe nodes

From: Geert Uytterhoeven

Date: Mon Sep 14 2026 - 09:11:19 EST


On Wed, 9 Sept 2026 at 19:59, Marek Vasut
<marek.vasut+renesas@xxxxxxxxxxx> wrote:
> This SoC implements GIC600 with GICv3 ITS and PCIe host mode on this
> SoC can use it. Add GIC ITS node into GIC node, update interrupt-map
> and add msi-map into PCIe controller node.
>
> The GIC ITS does have master interface to issue transactions to RAM.
> The interface does support cacheable transactions, however, it does
> not support shareable attribute, because the AXI port signals are tied
> to inactive in this implementation. Therefore, add "dma-noncoherent"
> DT property into the GIC ITS subnode.
>
> The GIC redistributor does not have cacheable/shareable, therefore
> add "dma-noncoherent" DT property into the GIC node.
>
> Signed-off-by: Marek Vasut <marek.vasut+renesas@xxxxxxxxxxx>

Reviewed-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
i.e. will queue in renesas-devel for v7.4.

Gr{oetje,eeting}s,

Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds