[PATCH v6 2/4] arm64: tegra: Add device-tree node for NVVRS RTC

[PATCH v6 2/4] arm64: tegra: Add device-tree node for NVVRS RTC

[Shubhi Garg]

Add NVIDIA VRS (Voltage Regulator Specification) RTC device tree node for
Tegra234 P3701 and P3767 platforms. Assign VRS RTC as primary RTC (rtc0).

Signed-off-by: Shubhi Garg <shgarg@nvidia.com>
---

v6:
- compatible name fixes to "nvidia,vrs-10"
- changed dtb node name to pmic@3c

v5:
- changed dtb node name to rtc@3c

v4:
- fixed device tree node name to "pmic@3c" in aliases

v3:
- fixed device tree node name to generic "pmic@3c"

v2:
- added alias to assign VRS RTC to rtc0
- removed status node from VRS DTB node

 arch/arm64/boot/dts/nvidia/tegra234-p3701.dtsi | 11 +++++++++++
 arch/arm64/boot/dts/nvidia/tegra234-p3767.dtsi | 15 +++++++++++++++
 2 files changed, 26 insertions(+)

diff --git a/arch/arm64/boot/dts/nvidia/tegra234-p3701.dtsi b/arch/arm64/boot/dts/nvidia/tegra234-p3701.dtsi
index 9086a0d010e5..58bf55c0e414 100644
--- a/arch/arm64/boot/dts/nvidia/tegra234-p3701.dtsi
+++ b/arch/arm64/boot/dts/nvidia/tegra234-p3701.dtsi
@@ -8,6 +8,7 @@ / {
 	aliases {
 		mmc0 = "/bus@0/mmc@3460000";
 		mmc1 = "/bus@0/mmc@3400000";
+		rtc0 = "/bpmp/i2c/pmic@3c";
 	};
 
 	bus@0 {
@@ -170,6 +171,16 @@ bpmp {
 		i2c {
 			status = "okay";
 
+			pmic@3c {
+				compatible = "nvidia,vrs-10";
+				reg = <0x3c>;
+				interrupt-parent = <&pmc>;
+				/* VRS Wake ID is 24 */
+				interrupts = <24 IRQ_TYPE_LEVEL_LOW>;
+				interrupt-controller;
+				#interrupt-cells = <2>;
+			};
+
 			thermal-sensor@4c {
 				compatible = "ti,tmp451";
 				status = "okay";
diff --git a/arch/arm64/boot/dts/nvidia/tegra234-p3767.dtsi b/arch/arm64/boot/dts/nvidia/tegra234-p3767.dtsi
index 84db7132e8fc..ab391a71c3d3 100644
--- a/arch/arm64/boot/dts/nvidia/tegra234-p3767.dtsi
+++ b/arch/arm64/boot/dts/nvidia/tegra234-p3767.dtsi
@@ -7,6 +7,7 @@ / {
 
 	aliases {
 		mmc0 = "/bus@0/mmc@3400000";
+		rtc0 = "/bpmp/i2c/pmic@3c";
 	};
 
 	bus@0 {
@@ -121,6 +122,20 @@ pmc@c360000 {
 		};
 	};
 
+	bpmp {
+		i2c {
+			pmic@3c {
+				compatible = "nvidia,vrs-10";
+				reg = <0x3c>;
+				interrupt-parent = <&pmc>;
+				/* VRS Wake ID is 24 */
+				interrupts = <24 IRQ_TYPE_LEVEL_LOW>;
+				interrupt-controller;
+				#interrupt-cells = <2>;
+			};
+		};
+	};
+
 	vdd_5v0_sys: regulator-vdd-5v0-sys {
 		compatible = "regulator-fixed";
 		regulator-name = "VDD_5V0_SYS";
-- 
2.43.0

Re: [PATCH v6 2/4] arm64: tegra: Add device-tree node for NVVRS RTC

[Rob Herring (Arm)]

On Fri, 19 Sep 2025 14:02:17 +0000, Shubhi Garg wrote:
> Add NVIDIA VRS (Voltage Regulator Specification) RTC device tree node for
> Tegra234 P3701 and P3767 platforms. Assign VRS RTC as primary RTC (rtc0).
> 
> Signed-off-by: Shubhi Garg <shgarg@nvidia.com>
> ---
> 
> v6:
> - compatible name fixes to "nvidia,vrs-10"
> - changed dtb node name to pmic@3c
> 
> v5:
> - changed dtb node name to rtc@3c
> 
> v4:
> - fixed device tree node name to "pmic@3c" in aliases
> 
> v3:
> - fixed device tree node name to generic "pmic@3c"
> 
> v2:
> - added alias to assign VRS RTC to rtc0
> - removed status node from VRS DTB node
> 
>  arch/arm64/boot/dts/nvidia/tegra234-p3701.dtsi | 11 +++++++++++
>  arch/arm64/boot/dts/nvidia/tegra234-p3767.dtsi | 15 +++++++++++++++
>  2 files changed, 26 insertions(+)
> 


My bot found new DTB warnings on the .dts files added or changed in this
series.

Some warnings may be from an existing SoC .dtsi. Or perhaps the warnings
are fixed by another series. Ultimately, it is up to the platform
maintainer whether these warnings are acceptable or not. No need to reply
unless the platform maintainer has comments.

If you already ran DT checks and didn't see these error(s), then
make sure dt-schema is up to date:

  pip3 install dtschema --upgrade


This patch series was applied (using b4) to base:
 Base: attempting to guess base-commit...
 Base: tags/next-20250919 (exact match)

If this is not the correct base, please add 'base-commit' tag
(or use b4 which does this automatically)

New warnings running 'make CHECK_DTBS=y for arch/arm64/boot/dts/nvidia/' for 20250919140217.10531-1-shgarg@nvidia.com:

arch/arm64/boot/dts/nvidia/tegra234-p3768-0000+p3767-0000.dtb: /bpmp/i2c/pmic@3c: failed to match any schema with compatible: ['nvidia,vrs-10']
arch/arm64/boot/dts/nvidia/tegra234-p3737-0000+p3701-0008.dtb: /bpmp/i2c/pmic@3c: failed to match any schema with compatible: ['nvidia,vrs-10']
arch/arm64/boot/dts/nvidia/tegra234-p3740-0002+p3701-0008.dtb: /bpmp/i2c/pmic@3c: failed to match any schema with compatible: ['nvidia,vrs-10']
arch/arm64/boot/dts/nvidia/tegra234-p3768-0000+p3767-0005.dtb: /bpmp/i2c/pmic@3c: failed to match any schema with compatible: ['nvidia,vrs-10']
arch/arm64/boot/dts/nvidia/tegra234-p3737-0000+p3701-0000.dtb: /bpmp/i2c/pmic@3c: failed to match any schema with compatible: ['nvidia,vrs-10']