linux-kernel - [PATCH 2/4] arm64: tegra: Define pinmuxing for gpio pads on Tegra210

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Message-Id: <20250224-diogo-gpio_exp-v1-2-80fb84ac48c6@tecnico.ulisboa.pt>
Date: Mon, 24 Feb 2025 12:17:37 +0000
From: Diogo Ivo <diogo.ivo@...nico.ulisboa.pt>
To: Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, 
 Thierry Reding <thierry.reding@...il.com>, 
 Jonathan Hunter <jonathanh@...dia.com>
Cc: devicetree@...r.kernel.org, linux-tegra@...r.kernel.org, 
 linux-kernel@...r.kernel.org, Diogo Ivo <diogo.ivo@...nico.ulisboa.pt>
Subject: [PATCH 2/4] arm64: tegra: Define pinmuxing for gpio pads on
 Tegra210

As the gpio pads are capable of operating at either 1.8V or 3.3V add
both options to the pinmuxing so that the appropriate level can be set
depending on the voltage of the regulator driving the pads.

Signed-off-by: Diogo Ivo <diogo.ivo@...nico.ulisboa.pt>
---
 arch/arm64/boot/dts/nvidia/tegra210.dtsi | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/arch/arm64/boot/dts/nvidia/tegra210.dtsi b/arch/arm64/boot/dts/nvidia/tegra210.dtsi
index 942e3a0f81ed768021d2ac25f6369998a9fbfd76..b6c84d195c0ef9ae90721fada09ffd46a9c11fa3 100644
--- a/arch/arm64/boot/dts/nvidia/tegra210.dtsi
+++ b/arch/arm64/boot/dts/nvidia/tegra210.dtsi
@@ -874,6 +874,16 @@ sdmmc3_3v3: sdmmc3-3v3 {
 				pins = "sdmmc3";
 				power-source = <TEGRA_IO_PAD_VOLTAGE_3V3>;
 			};
+
+			gpio_1v8: gpio-1v8 {
+				pins = "gpio";
+				power-source = <TEGRA_IO_PAD_VOLTAGE_1V8>;
+			};
+
+			gpio_3v3: gpio-3v3 {
+				pins = "gpio";
+				power-source = <TEGRA_IO_PAD_VOLTAGE_3V3>;
+			};
 		};
 
 		powergates {

-- 
2.48.1