[PATCH v6 1/2] regulator: dt-bindings: Add MAX77675 regulator

[Joan-Na-adi <joan.na.devcode@gmail.com>]

From: Joan Na <joan.na@analog.com>

Add device tree binding YAML schema for the Maxim MAX77675 PMIC regulator.

Signed-off-by: Joan Na <joan.na@analog.com>
---
 .../bindings/regulator/adi,max77675.yaml      | 188 ++++++++++++++++++
 1 file changed, 188 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/regulator/adi,max77675.yaml

diff --git a/Documentation/devicetree/bindings/regulator/adi,max77675.yaml b/Documentation/devicetree/bindings/regulator/adi,max77675.yaml
new file mode 100644
index 000000000000..54cbbd59ff5b
--- /dev/null
+++ b/Documentation/devicetree/bindings/regulator/adi,max77675.yaml
@@ -0,0 +1,188 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/regulator/adi,max77675.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Maxim MAX77675 PMIC Regulator
+
+maintainers:
+  - Joan Na <joan.na@analog.com>
+
+description:
+  The MAX77675 is a Power Management IC providing four switching buck
+  regulators (SBB0–SBB3) accessible via I2C. It supports configuration
+  of output voltages and enable controls for each regulator.
+
+allOf:
+  - $ref: /schemas/input/input.yaml
+  - $ref: /schemas/pinctrl/pincfg-node.yaml
+
+properties:
+  compatible:
+    const: adi,max77675
+
+  reg:
+    maxItems: 1
+
+  reset-time-sec:
+    description: Manual reset time in seconds
+    enum: [4, 8, 12, 16]
+    default: 4
+
+  bias-disable:
+    type: boolean
+    description: Disable internal pull-up for EN pin
+    default: false
+
+  input-debounce:
+    description: Debounce time for the enable pin, in microseconds
+    items:
+      - enum: [100, 30000]
+    default: 100
+
+  adi,en-mode:
+    description: |
+      Enable mode configuration.
+      The debounce time set by 'adi,debounce-time-us' applies to
+      both push-button and slide-switch modes.
+      "push-button"  - A long press triggers power-on or power-down
+      "slide-switch" - Low : powers on, High : powers down
+      "logic"        - Low : powers on, High : powers down (no debounce time)
+    $ref: /schemas/types.yaml#/definitions/string
+    enum: [push-button, slide-switch, logic]
+    default: slide-switch
+
+  adi,voltage-change-latency-us:
+    description:
+      Specifies the delay (in microseconds) between an output voltage change
+      request and the start of the SBB voltage ramp.
+    enum: [10, 100]
+    default: 100
+
+  adi,drv-sbb-strength:
+    description: |
+      SIMO Buck-Boost Drive Strength Trim.
+      Controls the drive strength of the SIMO regulator's power MOSFETs.
+      This setting affects switching speed, impacting power efficiency and EMI.
+      "max"  – Maximum drive strength (~0.6 ns transition time)
+      "high" – High drive strength (~1.2 ns transition time)
+      "low"  – Low drive strength (~1.8 ns transition time)
+      "min"  – Minimum drive strength (~8 ns transition time)
+    $ref: /schemas/types.yaml#/definitions/string
+    enum: [max, high, low, min]
+    default: max
+
+  adi,dvs-slew-rate-mv-per-us:
+    description:
+      Dynamic rising slew rate for output voltage transitions, in mV/μs.
+      This setting is only used when 'adi,fixed-slew-rate' is not present.
+    enum: [5, 10]
+    default: 5
+
+  adi,bias-low-power-request:
+    type: boolean
+    description: Request low-power bias mode
+    default: false
+
+  adi,simo-ldo-always-on:
+    type: boolean
+    description: Set internal LDO to always supply 1.8V
+    default: false
+
+  regulators:
+    type: object
+    description: Regulator child nodes
+    patternProperties:
+      "^sbb[0-3]$":
+        type: object
+        $ref: regulator.yaml#
+        properties:
+          adi,fps-slot:
+            description: |
+              FPS (Flexible Power Sequencer) slot selection.
+              The Flexible Power Sequencer allows resources to power up under
+              hardware or software control. Additionally, each resource can
+              power up independently or among a group of other regulators with
+              adjustable power-up and power-down slots.
+              "slot0"   - Assign to FPS Slot 0
+              "slot1"   - Assign to FPS Slot 1
+              "slot2"   - Assign to FPS Slot 2
+              "slot3"   - Assign to FPS Slot 3
+              "default" - Use the default FPS slot value stored in register
+            $ref: /schemas/types.yaml#/definitions/string
+            enum: [slot0, slot1, slot2, slot3, default]
+            default: default
+
+          adi,fixed-slew-rate:
+            type: boolean
+            description:
+              When this property is present, the device uses a constant 2 mV/μs
+              slew rate and ignores any dynamic slew rate configuration.
+              When absent, the device uses the dynamic slew rate specified
+              by 'adi,dvs-slew-rate-mv-per-us'
+            default: true
+
+        unevaluatedProperties: false
+
+required:
+  - compatible
+  - reg
+  - regulators
+
+additionalProperties: false
+
+examples:
+  - |
+    i2c {
+      #address-cells = <1>;
+      #size-cells = <0>;
+
+      max77675: pmic@44 {
+        compatible = "adi,max77675";
+        reg = <0x44>;
+
+        reset-time-sec = <4>;
+        input-debounce = <100>;
+
+        adi,en-mode = "slide-switch";
+        adi,voltage-change-latency-us = <100>;
+        adi,drv-sbb-strength = "max";
+        adi,dvs-slew-rate-mv-per-us = <5>;
+
+        regulators {
+          sbb0: sbb0 {
+            regulator-name = "sbb0";
+            regulator-min-microvolt = <500000>;
+            regulator-max-microvolt = <5500000>;
+            adi,fps-slot = "default";
+            adi,fixed-slew-rate;
+          };
+
+          sbb1: sbb1 {
+            regulator-name = "sbb1";
+            regulator-min-microvolt = <500000>;
+            regulator-max-microvolt = <5500000>;
+            adi,fps-slot = "default";
+            adi,fixed-slew-rate;
+          };
+
+          sbb2: sbb2 {
+            regulator-name = "sbb2";
+            regulator-min-microvolt = <500000>;
+            regulator-max-microvolt = <5500000>;
+            adi,fps-slot = "default";
+            adi,fixed-slew-rate;
+          };
+
+          sbb3: sbb3 {
+            regulator-name = "sbb3";
+            regulator-min-microvolt = <500000>;
+            regulator-max-microvolt = <5500000>;
+            adi,fps-slot = "default";
+            adi,fixed-slew-rate;
+          };
+        };
+      };
+    };
+
--
2.34.1