1# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/mfd/rohm,bd71847-pmic.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: ROHM BD71847 and BD71850 Power Management Integrated Circuit
8
9maintainers:
10  - Matti Vaittinen <mazziesaccount@gmail.com>
11
12description: |
13  BD71847AMWV and BD71850MWV are programmable Power Management ICs for powering
14  single-core,  dual-core, and quad-core SoCs such as NXP-i.MX 8M. It is
15  optimized for low BOM cost and compact solution footprint. BD71847MWV and
16  BD71850MWV integrate 6 Buck regulators and 6 LDOs.
17  Datasheets are available at
18  https://www.rohm.com/products/power-management/power-management-ic-for-system/industrial-consumer-applications/nxp-imx/bd71847amwv-product
19  https://www.rohm.com/products/power-management/power-management-ic-for-system/industrial-consumer-applications/nxp-imx/bd71850mwv-product
20
21properties:
22  compatible:
23    enum:
24      - rohm,bd71847
25      - rohm,bd71850
26
27  reg:
28    description:
29      I2C slave address.
30    maxItems: 1
31
32  interrupts:
33    maxItems: 1
34
35  clocks:
36    maxItems: 1
37
38  "#clock-cells":
39    const: 0
40
41  clock-output-names:
42    maxItems: 1
43
44# The BD71847 abd BD71850 support two different HW states as reset target
45# states. States are called as SNVS and READY. At READY state all the PMIC
46# power outputs go down and OTP is reload. At the SNVS state all other logic
47# and external devices apart from the SNVS power domain are shut off. Please
48# refer to NXP i.MX8 documentation for further information regarding SNVS
49# state. When a reset is done via SNVS state the PMIC OTP data is not reload.
50# This causes power outputs that have been under SW control to stay down when
51# reset has switched power state to SNVS. If reset is done via READY state the
52# power outputs will be returned to HW control by OTP loading. Thus the reset
53# target state is set to READY by default. If SNVS state is used the boot
54# crucial regulators must have the regulator-always-on and regulator-boot-on
55# properties set in regulator node.
56
57  rohm,reset-snvs-powered:
58    description:
59      Transfer PMIC to SNVS state at reset.
60    type: boolean
61
62# Configure the "short press" and "long press" timers for the power button.
63# Values are rounded to what hardware supports
64# Short-press:
65#   Shortest being 10ms, next 500ms and then multiple of 500ms up to 7,5s
66# Long-press:
67#   Shortest being 10ms, next 1000ms and then multiple of 1000ms up to 15s
68# If these properties are not present the existing # configuration (from
69# bootloader or OTP) is not touched.
70
71  rohm,short-press-ms:
72    description:
73      Short press duration in milliseconds
74    enum:
75      - 10
76      - 500
77      - 1000
78      - 1500
79      - 2000
80      - 2500
81      - 3000
82      - 3500
83      - 4000
84      - 4500
85      - 5000
86      - 5500
87      - 6000
88      - 6500
89      - 7000
90      - 7500
91
92  rohm,long-press-ms:
93    description:
94      Long press duration in milliseconds
95    enum:
96      - 10
97      - 1000
98      - 2000
99      - 3000
100      - 4000
101      - 5000
102      - 6000
103      - 7000
104      - 8000
105      - 9000
106      - 10000
107      - 11000
108      - 12000
109      - 13000
110      - 14000
111      - 15000
112
113  regulators:
114    $ref: ../regulator/rohm,bd71847-regulator.yaml
115    description:
116      List of child nodes that specify the regulators.
117
118required:
119  - compatible
120  - reg
121  - interrupts
122  - regulators
123
124additionalProperties: false
125
126dependencies:
127  '#clock-cells': [clocks]
128  clocks: ['#clock-cells']
129
130examples:
131  - |
132    #include <dt-bindings/interrupt-controller/irq.h>
133    #include <dt-bindings/leds/common.h>
134
135    i2c {
136        #address-cells = <1>;
137        #size-cells = <0>;
138        pmic: pmic@4b {
139            compatible = "rohm,bd71847";
140            reg = <0x4b>;
141            interrupt-parent = <&gpio1>;
142            interrupts = <29 IRQ_TYPE_LEVEL_LOW>;
143            #clock-cells = <0>;
144            clocks = <&osc 0>;
145            rohm,reset-snvs-powered;
146            rohm,short-press-ms = <10>;
147            rohm,long-press-ms = <2000>;
148
149            regulators {
150                buck1: BUCK1 {
151                    regulator-name = "buck1";
152                    regulator-min-microvolt = <700000>;
153                    regulator-max-microvolt = <1300000>;
154                    regulator-boot-on;
155                    regulator-always-on;
156                    regulator-ramp-delay = <1250>;
157                    rohm,dvs-run-voltage = <900000>;
158                    rohm,dvs-idle-voltage = <850000>;
159                    rohm,dvs-suspend-voltage = <800000>;
160                };
161                buck2: BUCK2 {
162                    regulator-name = "buck2";
163                    regulator-min-microvolt = <700000>;
164                    regulator-max-microvolt = <1300000>;
165                    regulator-boot-on;
166                    regulator-always-on;
167                    regulator-ramp-delay = <1250>;
168                    rohm,dvs-run-voltage = <1000000>;
169                    rohm,dvs-idle-voltage = <900000>;
170                };
171                buck3: BUCK3 {
172                    regulator-name = "buck3";
173                    regulator-min-microvolt = <550000>;
174                    regulator-max-microvolt = <1350000>;
175                    regulator-boot-on;
176                };
177                buck4: BUCK4 {
178                    regulator-name = "buck4";
179                    regulator-min-microvolt = <2600000>;
180                    regulator-max-microvolt = <3300000>;
181                    regulator-boot-on;
182                };
183                buck5: BUCK5 {
184                    regulator-name = "buck5";
185                    regulator-min-microvolt = <1605000>;
186                    regulator-max-microvolt = <1995000>;
187                    regulator-boot-on;
188                };
189                buck8: BUCK6 {
190                    regulator-name = "buck6";
191                    regulator-min-microvolt = <800000>;
192                    regulator-max-microvolt = <1400000>;
193                };
194
195                ldo1: LDO1 {
196                    regulator-name = "ldo1";
197                    regulator-min-microvolt = <1600000>;
198                    regulator-max-microvolt = <3300000>;
199                    regulator-boot-on;
200                };
201                ldo2: LDO2 {
202                    regulator-name = "ldo2";
203                    regulator-min-microvolt = <800000>;
204                    regulator-max-microvolt = <900000>;
205                    regulator-boot-on;
206                };
207                ldo3: LDO3 {
208                    regulator-name = "ldo3";
209                    regulator-min-microvolt = <1800000>;
210                    regulator-max-microvolt = <3300000>;
211                };
212                ldo4: LDO4 {
213                    regulator-name = "ldo4";
214                    regulator-min-microvolt = <900000>;
215                    regulator-max-microvolt = <1800000>;
216                };
217                ldo5: LDO5 {
218                    regulator-name = "ldo5";
219                    regulator-min-microvolt = <800000>;
220                    regulator-max-microvolt = <3300000>;
221                };
222                ldo6: LDO6 {
223                    regulator-name = "ldo6";
224                    regulator-min-microvolt = <900000>;
225                    regulator-max-microvolt = <1800000>;
226                };
227            };
228        };
229    };
230