From: Frank Li <Frank.Li@nxp.com>
To: Liam Girdwood <lgirdwood@gmail.com>,
Mark Brown <broonie@kernel.org>, Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>, Frank Li <Frank.Li@nxp.com>,
linux-kernel@vger.kernel.org (open list:VOLTAGE AND CURRENT
REGULATOR FRAMEWORK),
devicetree@vger.kernel.org (open list:OPEN FIRMWARE AND
FLATTENED DEVICE TREE BINDINGS)
Cc: imx@lists.linux.dev
Subject: [PATCH 1/1] dt-bindings: regulator: convert ltc3589 to yaml format
Date: Tue, 12 May 2026 18:45:42 -0400 [thread overview]
Message-ID: <20260512224544.1223283-1-Frank.Li@nxp.com> (raw)
Convert the Linear Technology LTC3589/LTC3589-1/LTC3589-2 regulator
binding from text to yaml format.
Signed-off-by: Frank Li <Frank.Li@nxp.com>
---
.../bindings/regulator/lltc,ltc3589.yaml | 147 ++++++++++++++++++
.../devicetree/bindings/regulator/ltc3589.txt | 99 ------------
2 files changed, 147 insertions(+), 99 deletions(-)
create mode 100644 Documentation/devicetree/bindings/regulator/lltc,ltc3589.yaml
delete mode 100644 Documentation/devicetree/bindings/regulator/ltc3589.txt
diff --git a/Documentation/devicetree/bindings/regulator/lltc,ltc3589.yaml b/Documentation/devicetree/bindings/regulator/lltc,ltc3589.yaml
new file mode 100644
index 0000000000000..f406c2bd252d4
--- /dev/null
+++ b/Documentation/devicetree/bindings/regulator/lltc,ltc3589.yaml
@@ -0,0 +1,147 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/regulator/lltc,ltc3589.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Linear Technology LTC3589, LTC3589-1, and LTC3589-2 8-output regulators
+
+maintainers:
+ - Frank Li <Frank.Li@nxp.com>
+
+description:
+ Regulators sw1, sw2, sw3, and ldo2 can regulate the feedback reference from
+ 0.3625 V to 0.75 V in 12.5 mV steps. The output voltage thus ranges between
+ 0.3625 * (1 + R1/R2) V and 0.75 * (1 + R1/R2) V. Regulators bb-out and ldo1
+ have a fixed 0.8 V reference and thus output 0.8 * (1 + R1/R2) V. The ldo3
+ regulator is fixed to 1.8 V on LTC3589 and to 2.8 V on LTC3589-1,2. The ldo4
+ regulator can output between 1.8 V and 3.3 V on LTC3589 and between 1.2 V
+ and 3.2 V on LTC3589-1,2 in four steps. The ldo1 standby regulator can not
+ be disabled and thus should have the regulator-always-on property set.
+
+properties:
+ compatible:
+ enum:
+ - lltc,ltc3589
+ - lltc,ltc3589-1
+ - lltc,ltc3589-2
+
+ reg:
+ maxItems: 1
+
+ regulators:
+ type: object
+ description:
+ Contains eight regulator child nodes sw1, sw2, sw3, bb-out,
+ ldo1, ldo2, ldo3, and ldo4.
+
+ patternProperties:
+ "^(sw[1-3]|bb-out|ldo[1-2])$":
+ type: object
+ $ref: regulator.yaml#
+ unevaluatedProperties: false
+
+ properties:
+ lltc,fb-voltage-divider:
+ description:
+ An array of two integers containing the resistor values R1 and R2
+ of the feedback voltage divider in ohms.
+ $ref: /schemas/types.yaml#/definitions/uint32-array
+ items:
+ - description: R1 resistor value in ohms
+ - description: R2 resistor value in ohms
+
+ required:
+ - lltc,fb-voltage-divider
+
+ "^ldo[3-4]$":
+ type: object
+ $ref: regulator.yaml#
+ unevaluatedProperties: false
+
+ additionalProperties: false
+
+required:
+ - compatible
+ - reg
+ - regulators
+
+additionalProperties: false
+
+examples:
+ - |
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ pmic@34 {
+ compatible = "lltc,ltc3589-1";
+ reg = <0x34>;
+
+ regulators {
+ sw1 {
+ regulator-min-microvolt = <591930>;
+ regulator-max-microvolt = <1224671>;
+ lltc,fb-voltage-divider = <100000 158000>;
+ regulator-ramp-delay = <7000>;
+ regulator-boot-on;
+ regulator-always-on;
+ };
+
+ sw2 {
+ regulator-min-microvolt = <704123>;
+ regulator-max-microvolt = <1456803>;
+ lltc,fb-voltage-divider = <180000 191000>;
+ regulator-ramp-delay = <7000>;
+ regulator-boot-on;
+ regulator-always-on;
+ };
+
+ sw3 {
+ regulator-min-microvolt = <1341250>;
+ regulator-max-microvolt = <2775000>;
+ lltc,fb-voltage-divider = <270000 100000>;
+ regulator-ramp-delay = <7000>;
+ regulator-boot-on;
+ regulator-always-on;
+ };
+
+ bb-out {
+ regulator-min-microvolt = <3387341>;
+ regulator-max-microvolt = <3387341>;
+ lltc,fb-voltage-divider = <511000 158000>;
+ regulator-boot-on;
+ regulator-always-on;
+ };
+
+ ldo1 {
+ regulator-min-microvolt = <1306329>;
+ regulator-max-microvolt = <1306329>;
+ lltc,fb-voltage-divider = <100000 158000>;
+ regulator-boot-on;
+ regulator-always-on;
+ };
+
+ ldo2 {
+ regulator-min-microvolt = <704123>;
+ regulator-max-microvolt = <1456806>;
+ lltc,fb-voltage-divider = <180000 191000>;
+ regulator-ramp-delay = <7000>;
+ regulator-boot-on;
+ regulator-always-on;
+ };
+
+ ldo3 {
+ regulator-min-microvolt = <2800000>;
+ regulator-max-microvolt = <2800000>;
+ regulator-boot-on;
+ };
+
+ ldo4 {
+ regulator-min-microvolt = <1200000>;
+ regulator-max-microvolt = <3200000>;
+ };
+ };
+ };
+ };
+
diff --git a/Documentation/devicetree/bindings/regulator/ltc3589.txt b/Documentation/devicetree/bindings/regulator/ltc3589.txt
deleted file mode 100644
index 8010530361465..0000000000000
--- a/Documentation/devicetree/bindings/regulator/ltc3589.txt
+++ /dev/null
@@ -1,99 +0,0 @@
-Linear Technology LTC3589, LTC3589-1, and LTC3589-2 8-output regulators
-
-Required properties:
-- compatible: "lltc,ltc3589", "lltc,ltc3589-1" or "lltc,ltc3589-2"
-- reg: I2C slave address
-
-Required child node:
-- regulators: Contains eight regulator child nodes sw1, sw2, sw3, bb-out,
- ldo1, ldo2, ldo3, and ldo4, specifying the initialization data as
- documented in Documentation/devicetree/bindings/regulator/regulator.txt.
-
-Each regulator is defined using the standard binding for regulators. The
-nodes for sw1, sw2, sw3, bb-out, ldo1, and ldo2 additionally need to specify
-the resistor values of their external feedback voltage dividers:
-
-Required properties (not on ldo3, ldo4):
-- lltc,fb-voltage-divider: An array of two integers containing the resistor
- values R1 and R2 of the feedback voltage divider in ohms.
-
-Regulators sw1, sw2, sw3, and ldo2 can regulate the feedback reference from
-0.3625 V to 0.75 V in 12.5 mV steps. The output voltage thus ranges between
-0.3625 * (1 + R1/R2) V and 0.75 * (1 + R1/R2) V. Regulators bb-out and ldo1
-have a fixed 0.8 V reference and thus output 0.8 * (1 + R1/R2) V. The ldo3
-regulator is fixed to 1.8 V on LTC3589 and to 2.8 V on LTC3589-1,2. The ldo4
-regulator can output between 1.8 V and 3.3 V on LTC3589 and between 1.2 V
-and 3.2 V on LTC3589-1,2 in four steps. The ldo1 standby regulator can not
-be disabled and thus should have the regulator-always-on property set.
-
-Example:
-
- ltc3589: pmic@34 {
- compatible = "lltc,ltc3589-1";
- reg = <0x34>;
-
- regulators {
- sw1_reg: sw1 {
- regulator-min-microvolt = <591930>;
- regulator-max-microvolt = <1224671>;
- lltc,fb-voltage-divider = <100000 158000>;
- regulator-ramp-delay = <7000>;
- regulator-boot-on;
- regulator-always-on;
- };
-
- sw2_reg: sw2 {
- regulator-min-microvolt = <704123>;
- regulator-max-microvolt = <1456803>;
- lltc,fb-voltage-divider = <180000 191000>;
- regulator-ramp-delay = <7000>;
- regulator-boot-on;
- regulator-always-on;
- };
-
- sw3_reg: sw3 {
- regulator-min-microvolt = <1341250>;
- regulator-max-microvolt = <2775000>;
- lltc,fb-voltage-divider = <270000 100000>;
- regulator-ramp-delay = <7000>;
- regulator-boot-on;
- regulator-always-on;
- };
-
- bb_out_reg: bb-out {
- regulator-min-microvolt = <3387341>;
- regulator-max-microvolt = <3387341>;
- lltc,fb-voltage-divider = <511000 158000>;
- regulator-boot-on;
- regulator-always-on;
- };
-
- ldo1_reg: ldo1 {
- regulator-min-microvolt = <1306329>;
- regulator-max-microvolt = <1306329>;
- lltc,fb-voltage-divider = <100000 158000>;
- regulator-boot-on;
- regulator-always-on;
- };
-
- ldo2_reg: ldo2 {
- regulator-min-microvolt = <704123>;
- regulator-max-microvolt = <1456806>;
- lltc,fb-voltage-divider = <180000 191000>;
- regulator-ramp-delay = <7000>;
- regulator-boot-on;
- regulator-always-on;
- };
-
- ldo3_reg: ldo3 {
- regulator-min-microvolt = <2800000>;
- regulator-max-microvolt = <2800000>;
- regulator-boot-on;
- };
-
- ldo4_reg: ldo4 {
- regulator-min-microvolt = <1200000>;
- regulator-max-microvolt = <3200000>;
- };
- };
- };
--
2.43.0
next reply other threads:[~2026-05-12 22:46 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-12 22:45 Frank Li [this message]
2026-05-13 1:28 ` [PATCH 1/1] dt-bindings: regulator: convert ltc3589 to yaml format Mark Brown
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