1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
4 $id: http://devicetree.org/schemas/mfd/rohm,bd71837-pmic.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: ROHM BD71837 Power Management Integrated Circuit bindings
10 - Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
13 BD71837MWV is programmable Power Management ICs for powering single-core,
14 dual-core, and quad-core SoCs such as NXP-i.MX 8M. It is optimized for low
15 BOM cost and compact solution footprint. BD71837MWV integrates 8 Buck
16 regulators and 7 LDOs.
17 Datasheet for BD71837 is available at
18 https://www.rohm.com/products/power-management/power-management-ic-for-system/industrial-consumer-applications/nxp-imx/bd71837amwv-product
38 # The BD718x7 supports two different HW states as reset target states. States
39 # are called as SNVS and READY. At READY state all the PMIC power outputs go
40 # down and OTP is reload. At the SNVS state all other logic and external
41 # devices apart from the SNVS power domain are shut off. Please refer to NXP
42 # i.MX8 documentation for further information regarding SNVS state. When a
43 # reset is done via SNVS state the PMIC OTP data is not reload. This causes
44 # power outputs that have been under SW control to stay down when reset has
45 # switched power state to SNVS. If reset is done via READY state the power
46 # outputs will be returned to HW control by OTP loading. Thus the reset
47 # target state is set to READY by default. If SNVS state is used the boot
48 # crucial regulators must have the regulator-always-on and regulator-boot-on
49 # properties set in regulator node.
51 rohm,reset-snvs-powered:
53 Transfer PMIC to SNVS state at reset
56 # Configure the "short press" and "long press" timers for the power button.
57 # Values are rounded to what hardware supports
59 # Shortest being 10ms, next 500ms and then multiple of 500ms up to 7,5s
61 # Shortest being 10ms, next 1000ms and then multiple of 1000ms up to 15s
62 # If these properties are not present the existing configuration (from
63 # bootloader or OTP) is not touched.
67 Short press duration in milliseconds
87 Long press duration in milliseconds
106 $ref: ../regulator/rohm,bd71837-regulator.yaml
108 List of child nodes that specify the regulators.
118 additionalProperties: false
122 #include <dt-bindings/interrupt-controller/irq.h>
123 #include <dt-bindings/leds/common.h>
126 #address-cells = <1>;
129 compatible = "rohm,bd71837";
131 interrupt-parent = <&gpio1>;
132 interrupts = <29 IRQ_TYPE_LEVEL_LOW>;
135 rohm,reset-snvs-powered;
136 rohm,short-press-ms = <10>;
137 rohm,long-press-ms = <2000>;
141 regulator-name = "buck1";
142 regulator-min-microvolt = <700000>;
143 regulator-max-microvolt = <1300000>;
146 regulator-ramp-delay = <1250>;
147 rohm,dvs-run-voltage = <900000>;
148 rohm,dvs-idle-voltage = <850000>;
149 rohm,dvs-suspend-voltage = <800000>;
152 regulator-name = "buck2";
153 regulator-min-microvolt = <700000>;
154 regulator-max-microvolt = <1300000>;
157 regulator-ramp-delay = <1250>;
158 rohm,dvs-run-voltage = <1000000>;
159 rohm,dvs-idle-voltage = <900000>;
162 regulator-name = "buck3";
163 regulator-min-microvolt = <700000>;
164 regulator-max-microvolt = <1300000>;
166 rohm,dvs-run-voltage = <1000000>;
169 regulator-name = "buck4";
170 regulator-min-microvolt = <700000>;
171 regulator-max-microvolt = <1300000>;
173 rohm,dvs-run-voltage = <1000000>;
176 regulator-name = "buck5";
177 regulator-min-microvolt = <700000>;
178 regulator-max-microvolt = <1350000>;
182 regulator-name = "buck6";
183 regulator-min-microvolt = <3000000>;
184 regulator-max-microvolt = <3300000>;
188 regulator-name = "buck7";
189 regulator-min-microvolt = <1605000>;
190 regulator-max-microvolt = <1995000>;
194 regulator-name = "buck8";
195 regulator-min-microvolt = <800000>;
196 regulator-max-microvolt = <1400000>;
200 regulator-name = "ldo1";
201 regulator-min-microvolt = <3000000>;
202 regulator-max-microvolt = <3300000>;
206 regulator-name = "ldo2";
207 regulator-min-microvolt = <900000>;
208 regulator-max-microvolt = <900000>;
212 regulator-name = "ldo3";
213 regulator-min-microvolt = <1800000>;
214 regulator-max-microvolt = <3300000>;
217 regulator-name = "ldo4";
218 regulator-min-microvolt = <900000>;
219 regulator-max-microvolt = <1800000>;
222 regulator-name = "ldo5";
223 regulator-min-microvolt = <1800000>;
224 regulator-max-microvolt = <3300000>;
227 regulator-name = "ldo6";
228 regulator-min-microvolt = <900000>;
229 regulator-max-microvolt = <1800000>;
232 regulator-name = "ldo7";
233 regulator-min-microvolt = <1800000>;
234 regulator-max-microvolt = <3300000>;