From: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>

Add support for the RZ/V2N Interrupt Control Unit (ICU) by introducing a
dedicated compatible string in the irqchip driver. While the RZ/V2N ICU
differs from the RZ/V2H(P) version in its register layout primarily due
to a reduced set of ECCRAM related registers the irqchip driver does not
currently access these registers.

As a result, the RZ/V2N ICU can be safely handled by rzv2h_icu_probe for
now, but it still requires a distinct compatible so that future changes
can differentiate the SoCs when needed.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
---
v1->v2:
- New patch
---
 drivers/irqchip/irq-renesas-rzv2h.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/irqchip/irq-renesas-rzv2h.c b/drivers/irqchip/irq-renesas-rzv2h.c
index 899a423b5da8..0c44b6109842 100644
--- a/drivers/irqchip/irq-renesas-rzv2h.c
+++ b/drivers/irqchip/irq-renesas-rzv2h.c
@@ -616,6 +616,7 @@ static int rzv2h_icu_probe(struct platform_device *pdev, struct device_node *par
 
 IRQCHIP_PLATFORM_DRIVER_BEGIN(rzv2h_icu)
 IRQCHIP_MATCH("renesas,r9a09g047-icu", rzg3e_icu_probe)
+IRQCHIP_MATCH("renesas,r9a09g056-icu", rzv2h_icu_probe)
 IRQCHIP_MATCH("renesas,r9a09g057-icu", rzv2h_icu_probe)
 IRQCHIP_PLATFORM_DRIVER_END(rzv2h_icu)
 MODULE_AUTHOR("Fabrizio Castro <fabrizio.castro.jz@renesas.com>");
-- 
2.52.0

On Thu, 27 Nov 2025 at 17:24, Prabhakar <prabhakar.csengg@gmail.com> wrote:
> From: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
>
> Add support for the RZ/V2N Interrupt Control Unit (ICU) by introducing a
> dedicated compatible string in the irqchip driver. While the RZ/V2N ICU
> differs from the RZ/V2H(P) version in its register layout primarily due
> to a reduced set of ECCRAM related registers the irqchip driver does not
> currently access these registers.
>
> As a result, the RZ/V2N ICU can be safely handled by rzv2h_icu_probe for
> now, but it still requires a distinct compatible so that future changes
> can differentiate the SoCs when needed.
>
> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>

Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

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