0001 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
0002 %YAML 1.2
0003 ---
0004 $id: http://devicetree.org/schemas/mfd/rohm,bd71828-pmic.yaml#
0005 $schema: http://devicetree.org/meta-schemas/core.yaml#
0006
0007 title: ROHM BD71828 Power Management Integrated Circuit bindings
0008
0009 maintainers:
0010 - Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
0011
0012 description: |
0013 BD71828GW is a single-chip power management IC for battery-powered portable
0014 devices. The IC integrates 7 buck converters, 7 LDOs, and a 1500 mA
0015 single-cell linear charger. Also included is a Coulomb counter, a real-time
0016 clock (RTC), and a 32.768 kHz clock gate.
0017
0018 properties:
0019 compatible:
0020 const: rohm,bd71828
0021
0022 reg:
0023 description:
0024 I2C slave address.
0025 maxItems: 1
0026
0027 interrupts:
0028 maxItems: 1
0029
0030 gpio-controller: true
0031
0032 "#gpio-cells":
0033 const: 2
0034 description: |
0035 The first cell is the pin number and the second cell is used to specify
0036 flags. See ../gpio/gpio.txt for more information.
0037
0038 clocks:
0039 maxItems: 1
0040
0041 "#clock-cells":
0042 const: 0
0043
0044 clock-output-names:
0045 const: bd71828-32k-out
0046
0047 rohm,clkout-open-drain:
0048 description: clk32kout mode. Set to 1 for "open-drain" or 0 for "cmos".
0049 $ref: "/schemas/types.yaml#/definitions/uint32"
0050 minimum: 0
0051 maximum: 1
0052
0053 rohm,charger-sense-resistor-ohms:
0054 minimum: 10000000
0055 maximum: 50000000
0056 description: |
0057 BD71827 and BD71828 have SAR ADC for measuring charging currents.
0058 External sense resistor (RSENSE in data sheet) should be used. If some
0059 other but 30MOhm resistor is used the resistance value should be given
0060 here in Ohms.
0061
0062 regulators:
0063 $ref: ../regulator/rohm,bd71828-regulator.yaml
0064 description:
0065 List of child nodes that specify the regulators.
0066
0067 leds:
0068 $ref: ../leds/rohm,bd71828-leds.yaml
0069
0070 gpio-reserved-ranges:
0071 description: |
0072 Usage of BD71828 GPIO pins can be changed via OTP. This property can be
0073 used to mark the pins which should not be configured for GPIO. Please see
0074 the ../gpio/gpio.txt for more information.
0075
0076 required:
0077 - compatible
0078 - reg
0079 - interrupts
0080 - clocks
0081 - "#clock-cells"
0082 - regulators
0083 - gpio-controller
0084 - "#gpio-cells"
0085
0086 additionalProperties: false
0087
0088 examples:
0089 - |
0090 #include <dt-bindings/interrupt-controller/irq.h>
0091 #include <dt-bindings/leds/common.h>
0092 i2c {
0093 #address-cells = <1>;
0094 #size-cells = <0>;
0095 pmic: pmic@4b {
0096 compatible = "rohm,bd71828";
0097 reg = <0x4b>;
0098
0099 interrupt-parent = <&gpio1>;
0100 interrupts = <29 IRQ_TYPE_LEVEL_LOW>;
0101
0102 clocks = <&osc 0>;
0103 #clock-cells = <0>;
0104 clock-output-names = "bd71828-32k-out";
0105
0106 gpio-controller;
0107 #gpio-cells = <2>;
0108 gpio-reserved-ranges = <0 1>, <2 1>;
0109
0110 rohm,charger-sense-resistor-ohms = <10000000>;
0111
0112 regulators {
0113 buck1: BUCK1 {
0114 regulator-name = "buck1";
0115 regulator-min-microvolt = <500000>;
0116 regulator-max-microvolt = <2000000>;
0117 regulator-ramp-delay = <2500>;
0118 };
0119 buck2: BUCK2 {
0120 regulator-name = "buck2";
0121 regulator-min-microvolt = <500000>;
0122 regulator-max-microvolt = <2000000>;
0123 regulator-ramp-delay = <2500>;
0124 };
0125 buck3: BUCK3 {
0126 regulator-name = "buck3";
0127 regulator-min-microvolt = <1200000>;
0128 regulator-max-microvolt = <2000000>;
0129 };
0130 buck4: BUCK4 {
0131 regulator-name = "buck4";
0132 regulator-min-microvolt = <1000000>;
0133 regulator-max-microvolt = <1800000>;
0134 };
0135 buck5: BUCK5 {
0136 regulator-name = "buck5";
0137 regulator-min-microvolt = <2500000>;
0138 regulator-max-microvolt = <3300000>;
0139 };
0140 buck6: BUCK6 {
0141 regulator-name = "buck6";
0142 regulator-min-microvolt = <500000>;
0143 regulator-max-microvolt = <2000000>;
0144 regulator-ramp-delay = <2500>;
0145 };
0146 buck7: BUCK7 {
0147 regulator-name = "buck7";
0148 regulator-min-microvolt = <500000>;
0149 regulator-max-microvolt = <2000000>;
0150 regulator-ramp-delay = <2500>;
0151 };
0152 ldo1: LDO1 {
0153 regulator-name = "ldo1";
0154 regulator-min-microvolt = <800000>;
0155 regulator-max-microvolt = <3300000>;
0156 };
0157 ldo2: LDO2 {
0158 regulator-name = "ldo2";
0159 regulator-min-microvolt = <800000>;
0160 regulator-max-microvolt = <3300000>;
0161 };
0162 ldo3: LDO3 {
0163 regulator-name = "ldo3";
0164 regulator-min-microvolt = <800000>;
0165 regulator-max-microvolt = <3300000>;
0166 };
0167 ldo4: LDO4 {
0168 regulator-name = "ldo4";
0169 regulator-min-microvolt = <800000>;
0170 regulator-max-microvolt = <3300000>;
0171 };
0172 ldo5: LDO5 {
0173 regulator-name = "ldo5";
0174 regulator-min-microvolt = <800000>;
0175 regulator-max-microvolt = <3300000>;
0176 };
0177 ldo6: LDO6 {
0178 regulator-name = "ldo6";
0179 regulator-min-microvolt = <1800000>;
0180 regulator-max-microvolt = <1800000>;
0181 };
0182 ldo7_reg: LDO7 {
0183 regulator-name = "ldo7";
0184 regulator-min-microvolt = <800000>;
0185 regulator-max-microvolt = <3300000>;
0186 };
0187 };
0188
0189 leds {
0190 compatible = "rohm,bd71828-leds";
0191
0192 led-1 {
0193 rohm,led-compatible = "bd71828-grnled";
0194 function = LED_FUNCTION_INDICATOR;
0195 color = <LED_COLOR_ID_GREEN>;
0196 };
0197 led-2 {
0198 rohm,led-compatible = "bd71828-ambled";
0199 function = LED_FUNCTION_CHARGING;
0200 color = <LED_COLOR_ID_AMBER>;
0201 };
0202 };
0203 };
0204 };
