From: Jon Hunter <jonathanh@nvidia.com>
To: Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>,
Thierry Reding <thierry.reding@kernel.org>
Cc: <devicetree@vger.kernel.org>, <linux-tegra@vger.kernel.org>,
Jon Hunter <jonathanh@nvidia.com>
Subject: [PATCH] arm64: tegra: Fix RTC aliases
Date: Thu, 5 Mar 2026 15:16:59 +0000 [thread overview]
Message-ID: <20260305151659.703273-1-jonathanh@nvidia.com> (raw)
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>
---
arch/arm64/boot/dts/nvidia/tegra234-p3701.dtsi | 1 +
arch/arm64/boot/dts/nvidia/tegra234-p3767.dtsi | 1 +
2 files changed, 2 insertions(+)
diff --git a/arch/arm64/boot/dts/nvidia/tegra234-p3701.dtsi b/arch/arm64/boot/dts/nvidia/tegra234-p3701.dtsi
index 58bf55c0e414..c10d041c183b 100644
--- a/arch/arm64/boot/dts/nvidia/tegra234-p3701.dtsi
+++ b/arch/arm64/boot/dts/nvidia/tegra234-p3701.dtsi
@@ -9,6 +9,7 @@ aliases {
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 ab391a71c3d3..9e9e80d57623 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 {
--
2.43.0
next reply other threads:[~2026-03-05 15:17 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-05 15:16 Jon Hunter [this message]
2026-03-20 22:57 ` [PATCH] arm64: tegra: Fix RTC aliases Thierry Reding
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20260305151659.703273-1-jonathanh@nvidia.com \
--to=jonathanh@nvidia.com \
--cc=conor+dt@kernel.org \
--cc=devicetree@vger.kernel.org \
--cc=krzk+dt@kernel.org \
--cc=linux-tegra@vger.kernel.org \
--cc=robh@kernel.org \
--cc=thierry.reding@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox