From: ChiYuan Huang <cy_huang@xxxxxxxxxxx> Add the binding document for Richtek RT5739. Signed-off-by: ChiYuan Huang <cy_huang@xxxxxxxxxxx> --- .../bindings/regulator/richtek,rt5739.yaml | 80 ++++++++++++++++++++++ 1 file changed, 80 insertions(+) create mode 100644 Documentation/devicetree/bindings/regulator/richtek,rt5739.yaml diff --git a/Documentation/devicetree/bindings/regulator/richtek,rt5739.yaml b/Documentation/devicetree/bindings/regulator/richtek,rt5739.yaml new file mode 100644 index 00000000..7dc4f78 --- /dev/null +++ b/Documentation/devicetree/bindings/regulator/richtek,rt5739.yaml @@ -0,0 +1,80 @@ +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/regulator/richtek,rt5739.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Richtek RT5739 2.4MHz 3.5A Step-Down Converter + +maintainers: + - ChiYuan Huang <cy_huang@xxxxxxxxxxx> + +description: | + The RT5739 is a step-down switching voltage regulator that delivers a + digitally programmable output from an input voltage supply of 2.5V to 5.5V. + The output voltage is programmed through an I2C interface capable of + operating up to 3.4MHz. + + Using a proprietary architecture with synchronous rectification, the RT5739 + is capable of delivering 3.5A continuously at over 80% efficiency, + maintaining that efficiency at load current as low as 10mA. The regulator + operates at a normal fixed frequency of 2.4MHz, which reduces the value of + the external components. Additional output capacitance can be added to + improve regulation during load transients without affecting stability. + +allOf: + - $ref: regulator.yaml# + +properties: + compatible: + enum: + - richtek,rt5739 + + reg: + maxItems: 1 + + enable-gpios: + maxItems: 1 + + richtek,vsel-active-high: + description: | + If property is present, use the 'VSEL1' register group for buck control. + Else, use the 'VSEL0' register group. This depends on external hardware + 'VSEL' pin connecton. + type: boolean + + regulator-allowed-modes: + description: | + buck allowed operating mode + 0: Auto PFM/PWM mode + 1: Forced PWM mode + maxItems: 2 + items: + enum: [0, 1] + +required: + - compatible + - reg + +unevaluatedProperties: false + +examples: + - | + #include <dt-bindings/gpio/gpio.h> + + i2c { + #address-cells = <1>; + #size-cells = <0>; + + regulator@50 { + compatible = "richtek,rt5739"; + reg = <0x50>; + enable-gpios = <&gpio26 1 GPIO_ACTIVE_HIGH>; + richtek,vsel-active-high; + regulator-name = "richtek,rt5739-buck"; + regulator-min-microvolt = <3000000>; + regulator-max-microvolt = <13000000>; + regulator-allowed-modes = <0 1>; + regulator-boot-on; + }; + }; -- 2.7.4
