ROHM BD96801 is a highly configurable automotive grade PMIC. Introduce DT bindings for the BD96801 core. Signed-off-by: Matti Vaittinen <mazziesaccount@xxxxxxxxx> --- .../bindings/mfd/rohm,bd96801-pmic.yaml | 155 ++++++++++++++++++ 1 file changed, 155 insertions(+) create mode 100644 Documentation/devicetree/bindings/mfd/rohm,bd96801-pmic.yaml diff --git a/Documentation/devicetree/bindings/mfd/rohm,bd96801-pmic.yaml b/Documentation/devicetree/bindings/mfd/rohm,bd96801-pmic.yaml new file mode 100644 index 000000000000..0d512fe19081 --- /dev/null +++ b/Documentation/devicetree/bindings/mfd/rohm,bd96801-pmic.yaml @@ -0,0 +1,155 @@ +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/mfd/rohm,bd96801-pmic.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: ROHM BD96801 Scalable Power Management Integrated Circuit + +maintainers: + - Matti Vaittinen <matti.vaittinen@xxxxxxxxxxxxxxxxx> + +description: | + BD96801 is an automotive grade single-chip power management IC. + It integrates 4 buck converters and 3 LDOs with safety features like + over-/under voltage and over current detection and a watchdog. + +properties: + compatible: + const: rohm,bd96801 + + reg: + description: + I2C slave address. + maxItems: 1 + + interrupts: + description: + The PMIC provides intb and errb IRQ lines. The errb IRQ line is used + for fatal IRQs which will cause the PMIC to shut down power outputs. + In many systems this will shut down the SoC contolling the PMIC and + connecting/handling the errb can be omitted. However, there are cases + where the SoC is not powered by the PMIC. In that case it may be + useful to connect the errb and handle errb events. + minItems: 1 + maxItems: 2 + + interrupt-names: + minItems: 1 + items: + - enum: [intb, errb] + - const: errb + + regulators: + $ref: ../regulator/rohm,bd96801-regulator.yaml + description: + List of child nodes that specify the regulators. + +required: + - compatible + - reg + - interrupts + - interrupt-names + - regulators + +additionalProperties: false + +examples: + - | + #include <dt-bindings/interrupt-controller/irq.h> + #include <dt-bindings/leds/common.h> + i2c { + #address-cells = <1>; + #size-cells = <0>; + pmic: pmic@60 { + reg = <0x60>; + compatible = "rohm,bd96801"; + interrupt-parent = <&gpio1>; + interrupts = <29 IRQ_TYPE_LEVEL_LOW>, <6 IRQ_TYPE_LEVEL_LOW>; + interrupt-names = "intb", "errb"; + + regulators { + buck1: BUCK1 { + regulator-name = "buck1"; + regulator-ramp-delay = <1250>; + /* 0.5V min INITIAL - 150 mV tune */ + regulator-min-microvolt = <350000>; + /* 3.3V + 150mV tune */ + regulator-max-microvolt = <3450000>; + + /* These can be set only when PMIC is in STBY */ + rohm,initial-voltage-microvolt = <500000>; + regulator-ov-error-microvolt = <230000>; + regulator-uv-error-microvolt = <230000>; + regulator-temp-protection-kelvin = <1>; + regulator-temp-warn-kelvin = <0>; + }; + buck2: BUCK2 { + regulator-name = "buck2"; + regulator-min-microvolt = <350000>; + regulator-max-microvolt = <3450000>; + + rohm,initial-voltage-microvolt = <3000000>; + regulator-ov-error-microvolt = <18000>; + regulator-uv-error-microvolt = <18000>; + regulator-temp-protection-kelvin = <1>; + regulator-temp-warn-kelvin = <1>; + }; + buck3: BUCK3 { + regulator-name = "buck3"; + regulator-min-microvolt = <350000>; + regulator-max-microvolt = <3450000>; + + rohm,initial-voltage-microvolt = <600000>; + regulator-ov-warn-microvolt = <18000>; + regulator-uv-warn-microvolt = <18000>; + regulator-temp-protection-kelvin = <1>; + regulator-temp-error-kelvin = <0>; + }; + buck4: BUCK4 { + regulator-name = "buck4"; + regulator-min-microvolt = <350000>; + regulator-max-microvolt = <3450000>; + + rohm,initial-voltage-microvolt = <600000>; + regulator-ov-warn-microvolt = <18000>; + regulator-uv-warn-microvolt = <18000>; + regulator-temp-protection-kelvin = <1>; + regulator-temp-error-kelvin = <0>; + }; + ldo5: LDO5 { + regulator-name = "ldo5"; + regulator-min-microvolt = <300000>; + regulator-max-microvolt = <3300000>; + + rohm,initial-voltage-microvolt = <500000>; + regulator-ov-error-microvolt = <36000>; + regulator-uv-error-microvolt = <34000>; + regulator-temp-protection-kelvin = <1>; + regulator-temp-warn-kelvin = <0>; + }; + ldo6: LDO6 { + regulator-name = "ldo6"; + regulator-min-microvolt = <300000>; + regulator-max-microvolt = <3300000>; + + rohm,initial-voltage-microvolt = <300000>; + regulator-ov-error-microvolt = <36000>; + regulator-uv-error-microvolt = <34000>; + regulator-temp-protection-kelvin = <1>; + regulator-temp-warn-kelvin = <0>; + }; + ldo7: LDO7 { + regulator-name = "ldo7"; + regulator-min-microvolt = <300000>; + regulator-max-microvolt = <3300000>; + + rohm,initial-voltage-microvolt = <500000>; + regulator-ov-error-microvolt = <36000>; + regulator-uv-error-microvolt = <34000>; + regulator-temp-protection-kelvin = <1>; + regulator-temp-warn-kelvin = <0>; + }; + }; + }; + }; -- 2.43.2 -- Matti Vaittinen, Linux device drivers ROHM Semiconductors, Finland SWDC Kiviharjunlenkki 1E 90220 OULU FINLAND ~~~ "I don't think so," said Rene Descartes. Just then he vanished ~~~ Simon says - in Latin please. ~~~ "non cogito me" dixit Rene Descarte, deinde evanescavit ~~~ Thanks to Simon Glass for the translation =]
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