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https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
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4e9a2c91bf
Convert the vctrl-regulator bindings to DT schema. This resolves a dtbs check warning for the rk3399-gru devices. Signed-off-by: Heiko Stuebner <heiko@sntech.de> Reviewed-by: Conor Dooley <conor.dooley@microchip.com> Link: https://patch.msgid.link/20240930210424.1994047-1-heiko@sntech.de Signed-off-by: Mark Brown <broonie@kernel.org>
81 lines
2.4 KiB
YAML
81 lines
2.4 KiB
YAML
# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/regulator/vctrl-regulator.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Voltage controlled regulators
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maintainers:
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- Heiko Stuebner <heiko@sntech.de>
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allOf:
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- $ref: regulator.yaml#
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properties:
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compatible:
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const: vctrl-regulator
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ctrl-supply:
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description: Regulator supplying the control voltage
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ctrl-voltage-range:
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description:
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Array of two integer values describing the range (min/max) of the
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control voltage. The values specify the control voltage needed to
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generate the corresponding regulator-min/max-microvolt output
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voltage.
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minItems: 2
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maxItems: 2
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$ref: /schemas/types.yaml#/definitions/uint32-array
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min-slew-down-rate:
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description:
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Describes how slowly the regulator voltage will decay down in the
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worst case (lightest expected load). Specified in uV / us (like
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main regulator ramp rate). This value is required when
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ovp-threshold-percent is specified.
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$ref: /schemas/types.yaml#/definitions/uint32
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ovp-threshold-percent:
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description:
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Overvoltage protection (OVP) threshold of the regulator in percent.
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Some regulators have an OVP circuitry which shuts down the regulator
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when the actual output voltage deviates beyond a certain margin from
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the expected value for a given control voltage. On larger voltage
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decreases this can occur undesiredly since the output voltage does
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not adjust immediately to changes in the control voltage. To avoid
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this situation the vctrl driver breaks down larger voltage decreases
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into multiple steps, where each step is within the OVP threshold.
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minimum: 0
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maximum: 100
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unevaluatedProperties: false
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dependencies:
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ovp-threshold-percent: [ min-slew-down-rate ]
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required:
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- compatible
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- ctrl-supply
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- ctrl-voltage-range
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- regulator-min-microvolt
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- regulator-max-microvolt
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examples:
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- |
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vctrl-reg {
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compatible = "vctrl-regulator";
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regulator-name = "vctrl_reg";
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ctrl-supply = <&ctrl_reg>;
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ctrl-voltage-range = <200000 500000>;
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min-slew-down-rate = <225>;
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ovp-threshold-percent = <16>;
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regulator-min-microvolt = <800000>;
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regulator-max-microvolt = <1500000>;
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};
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...
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