linux-kernel - [PATCH 1/2] dt-bindings: regulator: Add binding for Richtek RT5759 DCDC converter

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Date:   Fri, 25 Mar 2022 09:06:40 +0800
From:   cy_huang <u0084500@...il.com>
To:     broonie@...nel.org, robh+dt@...nel.org
Cc:     lgirdwood@...il.com, cy_huang@...htek.com, gene_chen@...htek.com,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org
Subject: [PATCH 1/2] dt-bindings: regulator: Add binding for Richtek RT5759 DCDC converter

From: ChiYuan Huang <cy_huang@...htek.com>

Add bindings for Richtek RT5759 high-performance DCDC converter.

Signed-off-by: ChiYuan Huang <cy_huang@...htek.com>
---
 .../regulator/richtek,rt5759-regulator.yaml        | 90 ++++++++++++++++++++++
 1 file changed, 90 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/regulator/richtek,rt5759-regulator.yaml

diff --git a/Documentation/devicetree/bindings/regulator/richtek,rt5759-regulator.yaml b/Documentation/devicetree/bindings/regulator/richtek,rt5759-regulator.yaml
new file mode 100644
index 00000000..c24b583
--- /dev/null
+++ b/Documentation/devicetree/bindings/regulator/richtek,rt5759-regulator.yaml
@@ -0,0 +1,90 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/regulator/richtek,rt5759-regulator.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Richtek RT5759 High Performance DCDC Concverter
+
+maintainers:
+  - ChiYuan Huang <cy_huang@...htek.com>
+
+description: |
+  The RT5759 is a high-performance, synchronous step-down DC-DC converter that
+  can deliver up to 9A output current from 3V to 6.5V input supply, The output
+  voltage can be programmable with I2C controlled 7-Bit VID.
+
+  Datasheet is available at
+  https://www.richtek.com/assets/product_file/RT5759/DS5759-00.pdf
+
+allOf:
+  - $ref: regulator.yaml#
+
+properties:
+  compatible:
+    enum:
+      - richtek,rt5759
+      - richtek,rt5759a
+
+  reg:
+    maxItems: 1
+
+  regulator-allowed-modes:
+    description: |
+      buck allowed operating mode
+        0: auto mode (PSKIP: pulse skipping)
+        1: force pwm mode
+    items:
+      enum: [0, 1]
+
+  richtek,watchdog-enable:
+    description: enable the external watchdog reset pin listening
+    type: boolean
+
+if:
+  properties:
+    compatible:
+      contains:
+        const: richtek,rt5759
+then:
+  properties:
+    richtek,watchdog-enable: false
+
+required:
+  - compatible
+  - reg
+
+unevaluatedProperties: false
+
+examples:
+  # example 1 for RT5759
+  - |
+    i2c {
+      #address-cells = <1>;
+      #size-cells = <0>;
+
+      rt5759@62 {
+        compatible = "richtek,rt5759";
+        reg = <0x62>;
+        regulator-name = "rt5759-buck";
+        regulator-min-microvolt = <600000>;
+        regulator-max-microvolt = <1500000>;
+        regulator-boot-on;
+      };
+    };
+  # example 2 for RT5759A
+  - |
+    i2c {
+      #address-cells = <1>;
+      #size-cells = <0>;
+
+      rt5759a@62 {
+        compatible = "richtek,rt5759a";
+        reg = <0x62>;
+        regulator-name = "rt5759a-buck";
+        regulator-min-microvolt = <600000>;
+        regulator-max-microvolt = <1725000>;
+        regulator-boot-on;
+        richtek,watchdog-enable;
+      };
+    };
-- 
2.7.4