linux-kernel - [PATCH v1 1/2] dt-bindings: regulator: document max77838 pmic

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Message-ID: <20250914130230.2622030-2-ivo.ivanov.ivanov1@gmail.com>
Date: Sun, 14 Sep 2025 16:02:29 +0300
From: Ivaylo Ivanov <ivo.ivanov.ivanov1@...il.com>
To: Krzysztof Kozlowski <krzk@...nel.org>,
	Rob Herring <robh@...nel.org>,
	Liam Girdwood <lgirdwood@...il.com>,
	Mark Brown <broonie@...nel.org>
Cc: linux-samsung-soc@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH v1 1/2] dt-bindings: regulator: document max77838 pmic

The max77838 is a pmic, containing a BUCK regulator and 4 LDOs. It's
primarily used in the Samsung Galaxy S7 lineup and is accessed over I2C.
Document it.

Signed-off-by: Ivaylo Ivanov <ivo.ivanov.ivanov1@...il.com>
---
 .../bindings/regulator/maxim,max77838.yaml    | 68 +++++++++++++++++++
 MAINTAINERS                                   |  6 ++
 2 files changed, 74 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/regulator/maxim,max77838.yaml

diff --git a/Documentation/devicetree/bindings/regulator/maxim,max77838.yaml b/Documentation/devicetree/bindings/regulator/maxim,max77838.yaml
new file mode 100644
index 000000000..bed36af54
--- /dev/null
+++ b/Documentation/devicetree/bindings/regulator/maxim,max77838.yaml
@@ -0,0 +1,68 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/regulator/maxim,max77838.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Maxim Integrated MAX77838 PMIC
+
+maintainers:
+  - Ivaylo Ivanov <ivo.ivanov.ivanov1@...il.com>
+
+properties:
+  $nodename:
+    pattern: "pmic@[0-9a-f]{1,2}"
+  compatible:
+    enum:
+      - maxim,max77838
+
+  reg:
+    maxItems: 1
+
+  regulators:
+    type: object
+    $ref: regulator.yaml#
+    description: |
+      list of regulators provided by this controller, must be named
+      after their hardware counterparts ldo[1-4] and buck
+
+    properties:
+      buck:
+        type: object
+        $ref: regulator.yaml#
+        unevaluatedProperties: false
+
+    patternProperties:
+      "^ldo([1-4])$":
+        type: object
+        $ref: regulator.yaml#
+        unevaluatedProperties: false
+
+    additionalProperties: false
+
+required:
+  - compatible
+  - reg
+  - regulators
+
+additionalProperties: false
+
+examples:
+  - |
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        pmic@60 {
+            compatible = "maxim,max77838";
+            reg = <0x60>;
+
+            regulators {
+                ldo2 {
+                    regulator-min-microvolt = <1800000>;
+                    regulator-max-microvolt = <1800000>;
+                };
+            };
+       };
+     };
+...
diff --git a/MAINTAINERS b/MAINTAINERS
index fed6cd812..a4916a178 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -15061,6 +15061,12 @@ F:	Documentation/devicetree/bindings/*/*max77802.yaml
 F:	drivers/regulator/max77802-regulator.c
 F:	include/dt-bindings/*/*max77802.h
 
+MAXIM MAX77838 PMIC REGULATOR DEVICE DRIVER
+M:	Ivaylo Ivanov <ivo.ivanov.ivanov1@...il.com>
+L:	linux-kernel@...r.kernel.org
+S:	Maintained
+F:	Documentation/devicetree/bindings/regulator/maxim,max77838.yaml
+
 MAXIM MAX77976 BATTERY CHARGER
 M:	Luca Ceresoli <luca@...aceresoli.net>
 S:	Supported
-- 
2.43.0