target/linux/mediatek/patches-5.15/830-v5.18-regulator-Add-bindings-for-Richtek-RT5190A-PMIC.patch

   1 From b77e70f6b8f2cc62fba847f3008a430a09ef275d Mon Sep 17 00:00:00 2001
   2 From: ChiYuan Huang <cy_huang@richtek.com>
   3 Date: Wed, 9 Mar 2022 16:01:42 +0800
   4 Subject: [PATCH 1/2] regulator: Add bindings for Richtek RT5190A PMIC
   5
   6 Add bindings for Richtek RT5190A PMIC.
   7
   8 Signed-off-by: ChiYuan Huang <cy_huang@richtek.com>
   9 Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
  10 Link: https://lore.kernel.org/r/1646812903-32496-2-git-send-email-u0084500@gmail.com
  11 Signed-off-by: Mark Brown <broonie@kernel.org>
  12 ---
  13  .../regulator/richtek,rt5190a-regulator.yaml  | 141 ++++++++++++++++++
  14  .../regulator/richtek,rt5190a-regulator.h     |  15 ++
  15  2 files changed, 156 insertions(+)
  16  create mode 100644 Documentation/devicetree/bindings/regulator/richtek,rt5190a-regulator.yaml
  17  create mode 100644 include/dt-bindings/regulator/richtek,rt5190a-regulator.h
  18
  19 --- /dev/null
  20 +++ b/Documentation/devicetree/bindings/regulator/richtek,rt5190a-regulator.yaml
  21 @@ -0,0 +1,141 @@
  22 +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
  23 +%YAML 1.2
  24 +---
  25 +$id: http://devicetree.org/schemas/regulator/richtek,rt5190a-regulator.yaml#
  26 +$schema: http://devicetree.org/meta-schemas/core.yaml#
  27 +
  28 +title: Richtek RT5190A PMIC Regulator
  29 +
  30 +maintainers:
  31 +  - ChiYuan Huang <cy_huang@richtek.com>
  32 +
  33 +description: |
  34 +  The RT5190A integrates 1 channel buck controller, 3 channels high efficiency
  35 +  synchronous buck converters, 1 LDO, I2C control interface and peripherial
  36 +  logical control.
  37 +
  38 +  It also supports mute AC OFF depop sound and quick setting storage while
  39 +  input power is removed.
  40 +
  41 +properties:
  42 +  compatible:
  43 +    enum:
  44 +      - richtek,rt5190a
  45 +
  46 +  reg:
  47 +    maxItems: 1
  48 +
  49 +  interrupts:
  50 +    maxItems: 1
  51 +
  52 +  vin2-supply:
  53 +    description: phandle to buck2 input voltage.
  54 +
  55 +  vin3-supply:
  56 +    description: phandle to buck3 input voltage.
  57 +
  58 +  vin4-supply:
  59 +    description: phandle to buck4 input voltage.
  60 +
  61 +  vinldo-supply:
  62 +    description: phandle to ldo input voltage
  63 +
  64 +  richtek,mute-enable:
  65 +    description: |
  66 +      The mute function uses 'mutein', 'muteout', and 'vdet' pins as the control
  67 +      signal. When enabled, The normal behavior is to bypass the 'mutein' signal
  68 +      'muteout'. But if the power source removal is detected from 'vdet',
  69 +      whatever the 'mutein' signal is, it will pull down the 'muteout' to force
  70 +      speakers mute. this function is commonly used to prevent the speaker pop
  71 +      noise during AC power turned off in the modern TV system design.
  72 +    type: boolean
  73 +
  74 +  regulators:
  75 +    type: object
  76 +
  77 +    patternProperties:
  78 +      "^buck[1-4]$|^ldo$":
  79 +        type: object
  80 +        $ref: regulator.yaml#
  81 +        description: |
  82 +          regulator description for buck1 and buck4.
  83 +
  84 +        properties:
  85 +          regulator-allowed-modes:
  86 +            description: |
  87 +             buck operating mode, only buck1/4 support mode operating.
  88 +              0: auto mode
  89 +              1: force pwm mode
  90 +            items:
  91 +              enum: [0, 1]
  92 +
  93 +          richtek,latchup-enable:
  94 +            type: boolean
  95 +            description: |
  96 +              If specified, undervolt protection mode changes from the default
  97 +              hiccup to latchup.
  98 +
  99 +        unevaluatedProperties: false
 100 +
 101 +    additionalProperties: false
 102 +
 103 +required:
 104 +  - compatible
 105 +  - reg
 106 +  - regulators
 107 +
 108 +additionalProperties: false
 109 +
 110 +examples:
 111 +  - |
 112 +    #include <dt-bindings/interrupt-controller/irq.h>
 113 +    #include <dt-bindings/regulator/richtek,rt5190a-regulator.h>
 114 +
 115 +    i2c {
 116 +      #address-cells = <1>;
 117 +      #size-cells = <0>;
 118 +
 119 +      pmic@64 {
 120 +        compatible = "richtek,rt5190a";
 121 +        reg = <0x64>;
 122 +        interrupts-extended = <&gpio26 0 IRQ_TYPE_LEVEL_LOW>;
 123 +        vin2-supply = <&rt5190_buck1>;
 124 +        vin3-supply = <&rt5190_buck1>;
 125 +        vin4-supply = <&rt5190_buck1>;
 126 +
 127 +        regulators {
 128 +          rt5190_buck1: buck1 {
 129 +            regulator-name = "rt5190a-buck1";
 130 +            regulator-min-microvolt = <5090000>;
 131 +            regulator-max-microvolt = <5090000>;
 132 +            regulator-allowed-modes = <RT5190A_OPMODE_AUTO RT5190A_OPMODE_FPWM>;
 133 +            regulator-boot-on;
 134 +          };
 135 +          buck2 {
 136 +            regulator-name = "rt5190a-buck2";
 137 +            regulator-min-microvolt = <600000>;
 138 +            regulator-max-microvolt = <1400000>;
 139 +            regulator-boot-on;
 140 +          };
 141 +          buck3 {
 142 +            regulator-name = "rt5190a-buck3";
 143 +            regulator-min-microvolt = <600000>;
 144 +            regulator-max-microvolt = <1400000>;
 145 +            regulator-boot-on;
 146 +          };
 147 +          buck4 {
 148 +            regulator-name = "rt5190a-buck4";
 149 +            regulator-min-microvolt = <850000>;
 150 +            regulator-max-microvolt = <850000>;
 151 +            regulator-allowed-modes = <RT5190A_OPMODE_AUTO RT5190A_OPMODE_FPWM>;
 152 +            regulator-boot-on;
 153 +          };
 154 +          ldo {
 155 +            regulator-name = "rt5190a-ldo";
 156 +            regulator-min-microvolt = <1200000>;
 157 +            regulator-max-microvolt = <1200000>;
 158 +            regulator-boot-on;
 159 +          };
 160 +        };
 161 +      };
 162 +    };
 163 --- /dev/null
 164 +++ b/include/dt-bindings/regulator/richtek,rt5190a-regulator.h
 165 @@ -0,0 +1,15 @@
 166 +/* SPDX-License-Identifier: GPL-2.0 */
 167 +
 168 +#ifndef __DT_BINDINGS_RICHTEK_RT5190A_REGULATOR_H__
 169 +#define __DT_BINDINGS_RICHTEK_RT5190A_REGULATOR_H__
 170 +
 171 +/*
 172 + * BUCK/LDO mode constants which may be used in devicetree properties
 173 + * (eg. regulator-allowed-modes).
 174 + * See the manufacturer's datasheet for more information on these modes.
 175 + */
 176 +
 177 +#define RT5190A_OPMODE_AUTO    0
 178 +#define RT5190A_OPMODE_FPWM    1
 179 +
 180 +#endif