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

Add support for the CANFD controller on the Renesas RZ/T2H Soc.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
---
 arch/arm64/boot/dts/renesas/r9a09g077.dtsi | 31 ++++++++++++++++++++++
 1 file changed, 31 insertions(+)

diff --git a/arch/arm64/boot/dts/renesas/r9a09g077.dtsi b/arch/arm64/boot/dts/renesas/r9a09g077.dtsi
index 63de8271f47c..19ace8d86160 100644
--- a/arch/arm64/boot/dts/renesas/r9a09g077.dtsi
+++ b/arch/arm64/boot/dts/renesas/r9a09g077.dtsi
@@ -237,6 +237,37 @@ rspi3: spi@81007000 {
 			status = "disabled";
 		};
 
+		canfd: can@80040000 {
+			compatible = "renesas,r9a09g077-canfd";
+			reg = <0 0x80040000 0 0x20000>;
+			interrupts = <GIC_SPI 633 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 632 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 627 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 628 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 626 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 630 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 631 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 629 IRQ_TYPE_LEVEL_HIGH>;
+			interrupt-names = "g_err", "g_recc",
+					  "ch0_err", "ch0_rec", "ch0_trx",
+					  "ch1_err", "ch1_rec", "ch1_trx";
+			clocks = <&cpg CPG_MOD 310>,
+				 <&cpg CPG_CORE R9A09G077_CLK_PCLKH>,
+				 <&cpg CPG_CORE R9A09G077_PCLKCAN>;
+			clock-names = "fck", "ram_clk", "can_clk";
+			assigned-clocks = <&cpg CPG_CORE R9A09G077_PCLKCAN>;
+			assigned-clock-rates = <80000000>;
+			power-domains = <&cpg>;
+			status = "disabled";
+
+			channel0 {
+				status = "disabled";
+			};
+			channel1 {
+				status = "disabled";
+			};
+		};
+
 		wdt0: watchdog@80082000 {
 			compatible = "renesas,r9a09g077-wdt";
 			reg = <0 0x80082000 0 0x400>,
-- 
2.52.0

On Wed, 24 Dec 2025 at 18:52, Prabhakar <prabhakar.csengg@gmail.com> wrote:
> From: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
>
> Add support for the CANFD controller on the Renesas RZ/T2H Soc.
>
> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>

Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
i.e. will queue in renesas-devel for v6.20.

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