[PATCH 1/5] dt-bindings: mfd: add bindings for NVIDIA VRS PSEQ

Shubhi Garg
2025-04-16T12:06:52Z

Add bindings for NVIDIA VRS (Voltage Regulator Specification) power
sequencer device. NVIDIA VRS PSEQ controls ON/OFF and suspend/resume
power sequencing of system power rails on Tegra234 SoC. This device
also provides 32kHz RTC support with backup battery for system timing.

Signed-off-by: Shubhi Garg <shgarg@nvidia.com>
---
.../bindings/mfd/nvidia,vrs-pseq.yaml | 61 +++++++++++++++++++
1 file changed, 61 insertions(+)
create mode 100644 Documentation/devicetree/bindings/mfd/nvidia,vrs-pseq.yaml

diff --git a/Documentation/devicetree/bindings/mfd/nvidia,vrs-pseq.yaml b/Documentation/devicetree/bindings/mfd/nvidia,vrs-pseq.yaml
new file mode 100644
index 000000000000..d4c5984930e9
--- /dev/null
+++ b/Documentation/devicetree/bindings/mfd/nvidia,vrs-pseq.yaml
@@ -0,0 +1,61 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+# SPDX-FileCopyrightText: Copyright (c) 2025 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mfd/nvidia,vrs-pseq.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: NVIDIA Voltage Regulator Specification Power Sequencer
+
+maintainers:
+ - Shubhi Garg <shgarg@nvidia.com>
+
+description:
+ NVIDIA Voltage Regulator Specification Power Sequencer device controls ON/OFF
+ and suspend/resume power sequencing of system power rails for NVIDIA
+ SoCs. It provides 32kHz RTC clock support with backup battery for
+ system timing.
+
+properties:
+ compatible:
+ const: nvidia,vrs-pseq
+
+ reg:
+ maxItems: 1
+
+ interrupts:
+ maxItems: 1
+
+ interrupt-controller: true
+
+ '#interrupt-cells':
+ const: 2
+ description:
+ The first cell is the IRQ number, the second cell is the trigger type.
+
+required:
+ - compatible
+ - reg
+ - interrupts
+ - interrupt-controller
+ - "#interrupt-cells"
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/irq.h>
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ vrs@3c {
+ compatible = "nvidia,vrs-pseq";
+ reg = <0x3c>;
+ interrupt-parent = <&pmc>;
+ interrupts = <24 IRQ_TYPE_LEVEL_LOW>;
+ interrupt-controller;
+ #interrupt-cells = <2>;
+ status = "disabled";
+ };
+ };
--
2.25.1