From: Joan Na <joan.na@analog.com>
Add device tree binding YAML schema for the Maxim MAX77675 PMIC regulator.
This defines the node properties and supported regulator names for use
in device tree sources.
Signed-off-by: Joan Na <joan.na@analog.com>
---
.../bindings/regulator/maxim,max77675.yaml | 186 ++++++++++++++++++
1 file changed, 186 insertions(+)
create mode 100644 Documentation/devicetree/bindings/regulator/maxim,max77675.yaml
diff --git a/Documentation/devicetree/bindings/regulator/maxim,max77675.yaml b/Documentation/devicetree/bindings/regulator/maxim,max77675.yaml
new file mode 100644
index 000000000000..5d4a643ea5b1
--- /dev/null
+++ b/Documentation/devicetree/bindings/regulator/maxim,max77675.yaml
@@ -0,0 +1,186 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/regulator/maxim,max77675.yaml#
+$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
+
+properties:
+ compatible:
+ const: maxim,max77675
+
+ reg:
+ maxItems: 1
+
+ reset-time-sec:
+ description: Manual reset time in seconds
+ enum: [4, 8, 12, 16]
+ default: 4
+
+ maxim,en-mode:
+ description: |
+ Enable mode configuration.
+ The debounce time set by 'maxim,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 level powers on, high level powers down
+ "logic" - Low level powers on, high level powers down (no debounce time)
+ $ref: /schemas/types.yaml#/definitions/string
+ enum: [push-button, slide-switch, logic]
+ default: slide-switch
+
+ maxim,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
+
+ maxim,drv-sbb-strength:
+ description: |
+ SIMO Buck-Boost Drive Strength Trim.
+ Controls the drive strength of the SIMO regulator's power MOSFETs.
+ This setting affects the switching speed, which impacts 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)
+ $ref: /schemas/types.yaml#/definitions/string
+ enum: [max, high, low, min]
+ default: max
+
+ maxim,dvs-slew-rate-mv-per-us:
+ description:
+ Dynamic rising slew rate for output voltage transitions, in mV/μs.
+ This setting is only used when 'maxim,fixed-slew-rate' is not present.
+ enum: [5, 10]
+ default: 5
+
+ maxim,debounce-time-us:
+ description: Debounce time for the enable pin, in microseconds
+ enum: [100, 30000]
+ default: 100
+
+ maxim,en-pullup-disable:
+ type: boolean
+ description: Disable internal pull-up for EN pin
+ default: false
+
+ maxim,bias-low-power-request:
+ type: boolean
+ description: Request low-power bias mode
+ default: false
+
+ maxim,simo-int-ldo-always-on:
+ type: boolean
+ description: Set internal LDO to always supply 1.8V
+ default: false
+
+ regulators:
+ type: object
+ description: Regulator child nodes
+ patternProperties:
+ "^sbb[0-3]$":
+ type: object
+ $ref: regulator.yaml#
+ properties:
+ maxim,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 OTP and read from the register
+ $ref: /schemas/types.yaml#/definitions/string
+ enum: [slot0, slot1, slot2, slot3, default]
+ default: default
+
+ maxim,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 'maxim,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 = "maxim,max77675";
+ reg = <0x44>;
+
+ reset-time-sec = <4>;
+
+ maxim,en-mode = "slide-switch";
+ maxim,voltage-change-latency-us = <100>;
+ maxim,drv-sbb-strength = "max";
+ maxim,dvs-slew-rate-mv-per-us = <5>;
+ maxim,debounce-time-us = <100>;
+
+ regulators {
+ sbb0: sbb0 {
+ regulator-name = "sbb0";
+ regulator-min-microvolt = <500000>;
+ regulator-max-microvolt = <5500000>;
+ maxim,fps-slot = "default";
+ maxim,fixed-slew-rate;
+ };
+
+ sbb1: sbb1 {
+ regulator-name = "sbb1";
+ regulator-min-microvolt = <500000>;
+ regulator-max-microvolt = <5500000>;
+ maxim,fps-slot = "default";
+ maxim,fixed-slew-rate;
+ };
+
+ sbb2: sbb2 {
+ regulator-name = "sbb2";
+ regulator-min-microvolt = <500000>;
+ regulator-max-microvolt = <5500000>;
+ maxim,fps-slot = "default";
+ maxim,fixed-slew-rate;
+ };
+
+ sbb3: sbb3 {
+ regulator-name = "sbb3";
+ regulator-min-microvolt = <500000>;
+ regulator-max-microvolt = <5500000>;
+ maxim,fps-slot = "default";
+ maxim,fixed-slew-rate;
+ };
+ };
+ };
+ };
+
--
2.34.1
On Wed, Oct 29, 2025 at 11:32:52AM +0900, Joan-Na-adi wrote: > From: Joan Na <joan.na@analog.com> > > Add device tree binding YAML schema for the Maxim MAX77675 PMIC regulator. > This defines the node properties and supported regulator names for use > in device tree sources. My comments form v3 were still not applied. I pointed out this at v4. You still did not reply to comments. Did not implement them, either. <form letter> This is a friendly reminder during the review process. It seems my or other reviewer's previous comments were not fully addressed. Maybe the feedback got lost between the quotes, maybe you just forgot to apply it. Please go back to the previous discussion and either implement all requested changes or keep discussing them. Thank you. </form letter> Best regards, Krzysztof
On Wed, Oct 29, 2025 at 06:52:48AM +0100, Krzysztof Kozlowski wrote: > On Wed, Oct 29, 2025 at 11:32:52AM +0900, Joan-Na-adi wrote: > > From: Joan Na <joan.na@analog.com> > > > > Add device tree binding YAML schema for the Maxim MAX77675 PMIC regulator. > > This defines the node properties and supported regulator names for use > > in device tree sources. > > My comments form v3 were still not applied. I pointed out this at v4. > > You still did not reply to comments. Did not implement them, either. > > <form letter> > This is a friendly reminder during the review process. > > It seems my or other reviewer's previous comments were not fully > addressed. Maybe the feedback got lost between the quotes, maybe you > just forgot to apply it. Please go back to the previous discussion and > either implement all requested changes or keep discussing them. > > Thank you. > </form letter> > > Best regards, > Krzysztof > Thank you for pointing this out. I apologize for missing your comments from v3 and v4. I’ll make sure to review them carefully and address each point in the next update. I appreciate your patience. -- Best regards, Joan Na
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