linux-kernel - [PATCH V2 2/6] arm64: tegra: Add device-tree node for NVVRS PSEQ

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Message-ID: <20250520090832.3564104-3-shgarg@nvidia.com>
Date: Tue, 20 May 2025 09:08:28 +0000
From: Shubhi Garg <shgarg@...dia.com>
To: <jonathanh@...dia.com>, <lee@...nel.org>, <robh@...nel.org>,
	<krzk@...nel.org>, <alexandre.belloni@...tlin.com>,
	<thierry.reding@...il.com>, <devicetree@...r.kernel.org>,
	<linux-tegra@...r.kernel.org>, <linux-kernel@...r.kernel.org>
CC: Shubhi Garg <shgarg@...dia.com>
Subject: [PATCH V2 2/6] arm64: tegra: Add device-tree node for NVVRS PSEQ

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

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

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..b36df0c0c498 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@...mc@...0000";
 		mmc1 = "/bus@...mc@...0000";
+		rtc0 = "/bpmp/i2c/vrs@3c";
 	};
 
 	bus@0 {
@@ -170,6 +171,16 @@ bpmp {
 		i2c {
 			status = "okay";
 
+			vrs@3c {
+				compatible = "nvidia,vrs-pseq";
+				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..feae098033fc 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@...mc@...0000";
+		rtc0 = "/bpmp/i2c/vrs@3c";
 	};
 
 	bus@0 {
@@ -121,6 +122,20 @@ pmc@...0000 {
 		};
 	};
 
+	bpmp {
+		i2c {
+			vrs@3c {
+				compatible = "nvidia,vrs-pseq";
+				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