From: Biju Das <biju.das.jz@bp.renesas.com>

The latest RZ/G3E pin control document (rev 1.2) recommends using Schmitt
input when PS0 pin used as NMI function. Enable Schmitt input for PS0 pin.

Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
---
 arch/arm64/boot/dts/renesas/r9a09g047e57-smarc.dts | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/boot/dts/renesas/r9a09g047e57-smarc.dts b/arch/arm64/boot/dts/renesas/r9a09g047e57-smarc.dts
index 9f6716fa1086..08e814c03fa8 100644
--- a/arch/arm64/boot/dts/renesas/r9a09g047e57-smarc.dts
+++ b/arch/arm64/boot/dts/renesas/r9a09g047e57-smarc.dts
@@ -132,6 +132,7 @@ i2c0_pins: i2c0 {
 
 	nmi_pins: nmi {
 		pinmux = <RZG3E_PORT_PINMUX(S, 0, 0)>; /* NMI */
+		input-schmitt-enable;
 	};
 
 	scif_pins: scif {
-- 
2.43.0

On Sun, 17 Aug 2025 at 16:51, Biju <biju.das.au@gmail.com> wrote:
> From: Biju Das <biju.das.jz@bp.renesas.com>
>
> The latest RZ/G3E pin control document (rev 1.2) recommends using Schmitt
> input when PS0 pin used as NMI function. Enable Schmitt input for PS0 pin.
>
> Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>

Makes perfect sense, sp
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
i.e. will queue in renesas-devel for v6.18.

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