1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/mfd/rohm,bd71828-pmic.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: ROHM BD71828 Power Management Integrated Circuit
8
9 maintainers:
10 - Matti Vaittinen <mazziesaccount@gmail.com>
11
12 description: |
13 BD71828GW is a single-chip power management IC for battery-powered portable
14 devices. The IC integrates 7 buck converters, 7 LDOs, and a 1500 mA
15 single-cell linear charger. Also included is a Coulomb counter, a real-time
16 clock (RTC), and a 32.768 kHz clock gate.
17
18 properties:
19 compatible:
20 oneOf:
21 - const: rohm,bd71828
22
23 - items:
24 - const: rohm,bd71879
25 - const: rohm,bd71828
26
27 reg:
28 description:
29 I2C slave address.
30 maxItems: 1
31
32 interrupts:
33 maxItems: 1
34
35 gpio-controller: true
36
37 "#gpio-cells":
38 const: 2
39 description: |
40 The first cell is the pin number and the second cell is used to specify
41 flags. See ../gpio/gpio.txt for more information.
42
43 clocks:
44 maxItems: 1
45
46 "#clock-cells":
47 const: 0
48
49 clock-output-names:
50 const: bd71828-32k-out
51
52 rohm,clkout-open-drain:
53 description: clk32kout mode. Set to 1 for "open-drain" or 0 for "cmos".
54 $ref: /schemas/types.yaml#/definitions/uint32
55 minimum: 0
56 maximum: 1
57
58 rohm,charger-sense-resistor-ohms:
59 minimum: 10000000
60 maximum: 50000000
61 description: |
62 BD71827 and BD71828 have SAR ADC for measuring charging currents.
63 External sense resistor (RSENSE in data sheet) should be used. If some
64 other but 30MOhm resistor is used the resistance value should be given
65 here in Ohms.
66
67 regulators:
68 $ref: /schemas/regulator/rohm,bd71828-regulator.yaml
69 description:
70 List of child nodes that specify the regulators.
71
72 leds:
73 $ref: /schemas/leds/rohm,bd71828-leds.yaml
74
75 gpio-reserved-ranges:
76 description: |
77 Usage of BD71828 GPIO pins can be changed via OTP. This property can be
78 used to mark the pins which should not be configured for GPIO. Please see
79 the ../gpio/gpio.txt for more information.
80
81 system-power-controller: true
82
83 required:
84 - compatible
85 - reg
86 - interrupts
87 - clocks
88 - "#clock-cells"
89 - regulators
90 - gpio-controller
91 - "#gpio-cells"
92
93 additionalProperties: false
94
95 examples:
96 - |
97 #include <dt-bindings/interrupt-controller/irq.h>
98 #include <dt-bindings/leds/common.h>
99 i2c {
100 #address-cells = <1>;
101 #size-cells = <0>;
102 pmic: pmic@4b {
103 compatible = "rohm,bd71828";
104 reg = <0x4b>;
105
106 interrupt-parent = <&gpio1>;
107 interrupts = <29 IRQ_TYPE_LEVEL_LOW>;
108
109 clocks = <&osc 0>;
110 #clock-cells = <0>;
111 clock-output-names = "bd71828-32k-out";
112
113 gpio-controller;
114 #gpio-cells = <2>;
115 gpio-reserved-ranges = <0 1>, <2 1>;
116
117 rohm,charger-sense-resistor-ohms = <10000000>;
118
119 regulators {
120 buck1: BUCK1 {
121 regulator-name = "buck1";
122 regulator-min-microvolt = <500000>;
123 regulator-max-microvolt = <2000000>;
124 regulator-ramp-delay = <2500>;
125 };
126 buck2: BUCK2 {
127 regulator-name = "buck2";
128 regulator-min-microvolt = <500000>;
129 regulator-max-microvolt = <2000000>;
130 regulator-ramp-delay = <2500>;
131 };
132 buck3: BUCK3 {
133 regulator-name = "buck3";
134 regulator-min-microvolt = <1200000>;
135 regulator-max-microvolt = <2000000>;
136 };
137 buck4: BUCK4 {
138 regulator-name = "buck4";
139 regulator-min-microvolt = <1000000>;
140 regulator-max-microvolt = <1800000>;
141 };
142 buck5: BUCK5 {
143 regulator-name = "buck5";
144 regulator-min-microvolt = <2500000>;
145 regulator-max-microvolt = <3300000>;
146 };
147 buck6: BUCK6 {
148 regulator-name = "buck6";
149 regulator-min-microvolt = <500000>;
150 regulator-max-microvolt = <2000000>;
151 regulator-ramp-delay = <2500>;
152 };
153 buck7: BUCK7 {
154 regulator-name = "buck7";
155 regulator-min-microvolt = <500000>;
156 regulator-max-microvolt = <2000000>;
157 regulator-ramp-delay = <2500>;
158 };
159 ldo1: LDO1 {
160 regulator-name = "ldo1";
161 regulator-min-microvolt = <800000>;
162 regulator-max-microvolt = <3300000>;
163 };
164 ldo2: LDO2 {
165 regulator-name = "ldo2";
166 regulator-min-microvolt = <800000>;
167 regulator-max-microvolt = <3300000>;
168 };
169 ldo3: LDO3 {
170 regulator-name = "ldo3";
171 regulator-min-microvolt = <800000>;
172 regulator-max-microvolt = <3300000>;
173 };
174 ldo4: LDO4 {
175 regulator-name = "ldo4";
176 regulator-min-microvolt = <800000>;
177 regulator-max-microvolt = <3300000>;
178 };
179 ldo5: LDO5 {
180 regulator-name = "ldo5";
181 regulator-min-microvolt = <800000>;
182 regulator-max-microvolt = <3300000>;
183 };
184 ldo6: LDO6 {
185 regulator-name = "ldo6";
186 regulator-min-microvolt = <1800000>;
187 regulator-max-microvolt = <1800000>;
188 };
189 ldo7_reg: LDO7 {
190 regulator-name = "ldo7";
191 regulator-min-microvolt = <800000>;
192 regulator-max-microvolt = <3300000>;
193 };
194 };
195
196 leds {
197 compatible = "rohm,bd71828-leds";
198
199 led-1 {
200 rohm,led-compatible = "bd71828-grnled";
201 function = LED_FUNCTION_INDICATOR;
202 color = <LED_COLOR_ID_GREEN>;
203 };
204 led-2 {
205 rohm,led-compatible = "bd71828-ambled";
206 function = LED_FUNCTION_CHARGING;
207 color = <LED_COLOR_ID_AMBER>;
208 };
209 };
210 };
211 };
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