From: Jon Hunter <jonathanh@nvidia.com>
Date: Thu, 5 Mar 2026 15:16:59 +0000 (+0000)
Subject: arm64: tegra: Fix RTC aliases
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=69ec77b3f1074f3000d28f67f7629303e7999b84;p=thirdparty%2Fkernel%2Flinux.git

arm64: tegra: Fix RTC aliases

The following warning is observed on the Tegra234 Jetson platforms ...

 rtc-nvidia-vrs10 4-003c: /aliases ID 0 not available

This happens because the 'rtc@c2a0000' device is registered before the
vrs10 RTC and so is assigned the 'rtc0' alias. We want the vrs10 RTC to
be the default RTC because this RTC maintains time across power cycles.
Fix this by adding a 'rtc1' alias for the 'rtc@c2a0000' device.

Fixes: b1806f2b4e78 ("arm64: tegra: Add device-tree node for NVVRS RTC")
Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
---

diff --git a/arch/arm64/boot/dts/nvidia/tegra234-p3701.dtsi b/arch/arm64/boot/dts/nvidia/tegra234-p3701.dtsi
index 58bf55c0e414c..c10d041c183be 100644
--- a/arch/arm64/boot/dts/nvidia/tegra234-p3701.dtsi
+++ b/arch/arm64/boot/dts/nvidia/tegra234-p3701.dtsi
@@ -9,6 +9,7 @@
 		mmc0 = "/bus@0/mmc@3460000";
 		mmc1 = "/bus@0/mmc@3400000";
 		rtc0 = "/bpmp/i2c/pmic@3c";
+		rtc1 = "/bus@0/rtc@c2a0000";
 	};
 
 	bus@0 {
diff --git a/arch/arm64/boot/dts/nvidia/tegra234-p3767.dtsi b/arch/arm64/boot/dts/nvidia/tegra234-p3767.dtsi
index ab391a71c3d33..9e9e80d57623c 100644
--- a/arch/arm64/boot/dts/nvidia/tegra234-p3767.dtsi
+++ b/arch/arm64/boot/dts/nvidia/tegra234-p3767.dtsi
@@ -8,6 +8,7 @@
 	aliases {
 		mmc0 = "/bus@0/mmc@3400000";
 		rtc0 = "/bpmp/i2c/pmic@3c";
+		rtc1 = "/bus@0/rtc@c2a0000";
 	};
 
 	bus@0 {