linux-kernel - [PATCH 2/2] arm64: dts: renesas: r9a09g047e57-smarc: Use schmitt input for NMI function

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Message-ID: <20250817145135.166591-3-biju.das.jz@bp.renesas.com>
Date: Sun, 17 Aug 2025 15:51:31 +0100
From: Biju <biju.das.au@...il.com>
To: Geert Uytterhoeven <geert+renesas@...der.be>,
	Magnus Damm <magnus.damm@...il.com>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>
Cc: Biju Das <biju.das.jz@...renesas.com>,
	linux-renesas-soc@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Prabhakar Mahadev Lad <prabhakar.mahadev-lad.rj@...renesas.com>,
	Biju Das <biju.das.au@...il.com>
Subject: [PATCH 2/2] arm64: dts: renesas: r9a09g047e57-smarc: Use schmitt input for NMI function

From: Biju Das <biju.das.jz@...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@...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