1# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) 2%YAML 1.2 3--- 4$id: http://devicetree.org/schemas/regulator/mediatek,mt6316d-regulator.yaml# 5$schema: http://devicetree.org/meta-schemas/core.yaml# 6 7title: MediaTek MT6316 DP/TP SPMI PMIC Regulators 8 9maintainers: 10 - AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> 11 12description: 13 The MediaTek MT6316DP/TP PMICs are fully controlled by SPMI interface, both 14 feature four step-down DC/DC (buck) converters, and provides a single Phase, 15 joining Buck 1+2+3+4. 16 17properties: 18 compatible: 19 const: mediatek,mt6316d-regulator 20 21 reg: 22 maxItems: 1 23 24 vbuck1234: 25 type: object 26 $ref: regulator.yaml# 27 unevaluatedProperties: false 28 properties: 29 regulator-allowed-modes: 30 description: | 31 Allowed Buck regulator operating modes allowed. Valid values below. 32 0 - Normal mode with automatic power saving, reducing the switching 33 frequency when light load conditions are detected 34 1 - Forced Continuous Conduction mode (FCCM) for improved voltage 35 regulation accuracy with constant switching frequency but lower 36 regulator efficiency 37 2 - Forced Low Power mode for improved regulator efficiency, used 38 when no heavy load is expected, will shut down unnecessary IP 39 blocks and secondary phases to reduce quiescent current. 40 This mode does not limit the maximum output current but unless 41 only a light load is applied, there will be regulation accuracy 42 and efficiency losses. 43 minItems: 1 44 maxItems: 3 45 items: 46 enum: [ 0, 1, 2 ] 47 48required: 49 - compatible 50 - reg 51 52additionalProperties: false 53 54examples: 55 - | 56 #include <dt-bindings/spmi/spmi.h> 57 58 spmi { 59 #address-cells = <2>; 60 #size-cells = <0>; 61 62 pmic@7 { 63 compatible = "mediatek,mt6316d-regulator"; 64 reg = <0x7 SPMI_USID>; 65 66 vbuck1234 { 67 regulator-name = "dvdd_gpustack"; 68 regulator-min-microvolt = <400000>; 69 regulator-max-microvolt = <1277500>; 70 regulator-allowed-modes = <0 1 2>; 71 regulator-enable-ramp-delay = <256>; 72 }; 73 }; 74 }; 75... 76