76 lines
2.2 KiB
YAML
76 lines
2.2 KiB
YAML
# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/regulator/mediatek,mt6316d-regulator.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: MediaTek MT6316 DP/TP SPMI PMIC Regulators
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maintainers:
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- AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
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description:
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The MediaTek MT6316DP/TP PMICs are fully controlled by SPMI interface, both
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feature four step-down DC/DC (buck) converters, and provides a single Phase,
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joining Buck 1+2+3+4.
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properties:
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compatible:
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const: mediatek,mt6316d-regulator
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reg:
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maxItems: 1
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vbuck1234:
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type: object
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$ref: regulator.yaml#
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unevaluatedProperties: false
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properties:
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regulator-allowed-modes:
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description: |
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Allowed Buck regulator operating modes allowed. Valid values below.
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0 - Normal mode with automatic power saving, reducing the switching
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frequency when light load conditions are detected
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1 - Forced Continuous Conduction mode (FCCM) for improved voltage
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regulation accuracy with constant switching frequency but lower
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regulator efficiency
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2 - Forced Low Power mode for improved regulator efficiency, used
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when no heavy load is expected, will shut down unnecessary IP
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blocks and secondary phases to reduce quiescent current.
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This mode does not limit the maximum output current but unless
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only a light load is applied, there will be regulation accuracy
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and efficiency losses.
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minItems: 1
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maxItems: 3
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items:
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enum: [ 0, 1, 2 ]
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required:
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- compatible
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- reg
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additionalProperties: false
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examples:
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- |
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#include <dt-bindings/spmi/spmi.h>
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spmi {
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#address-cells = <2>;
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#size-cells = <0>;
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pmic@7 {
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compatible = "mediatek,mt6316d-regulator";
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reg = <0x7 SPMI_USID>;
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vbuck1234 {
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regulator-name = "dvdd_gpustack";
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regulator-min-microvolt = <400000>;
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regulator-max-microvolt = <1277500>;
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regulator-allowed-modes = <0 1 2>;
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regulator-enable-ramp-delay = <256>;
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};
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};
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};
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...
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