1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
4 $id: http://devicetree.org/schemas/mfd/rohm,bd71847-pmic.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: ROHM BD71847 and BD71850 Power Management Integrated Circuit bindings
10 - Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
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
41 # The BD71847 abd BD71850 support two different HW states as reset target
42 # states. States are called as SNVS and READY. At READY state all the PMIC
43 # power outputs go down and OTP is reload. At the SNVS state all other logic
44 # and external devices apart from the SNVS power domain are shut off. Please
45 # refer to NXP i.MX8 documentation for further information regarding SNVS
46 # state. When a reset is done via SNVS state the PMIC OTP data is not reload.
47 # This causes power outputs that have been under SW control to stay down when
48 # reset has switched power state to SNVS. If reset is done via READY state the
49 # power outputs will be returned to HW control by OTP loading. Thus the reset
50 # target state is set to READY by default. If SNVS state is used the boot
51 # crucial regulators must have the regulator-always-on and regulator-boot-on
52 # properties set in regulator node.
54 rohm,reset-snvs-powered:
56 Transfer PMIC to SNVS state at reset.
59 # Configure the "short press" and "long press" timers for the power button.
60 # Values are rounded to what hardware supports
62 # Shortest being 10ms, next 500ms and then multiple of 500ms up to 7,5s
64 # Shortest being 10ms, next 1000ms and then multiple of 1000ms up to 15s
65 # If these properties are not present the existing # configuration (from
66 # bootloader or OTP) is not touched.
70 Short press duration in milliseconds
91 Long press duration in milliseconds
111 $ref: ../regulator/rohm,bd71847-regulator.yaml
113 List of child nodes that specify the regulators.
123 additionalProperties: false
127 #include <dt-bindings/interrupt-controller/irq.h>
128 #include <dt-bindings/leds/common.h>
131 #address-cells = <1>;
134 compatible = "rohm,bd71847";
136 interrupt-parent = <&gpio1>;
137 interrupts = <29 IRQ_TYPE_LEVEL_LOW>;
140 rohm,reset-snvs-powered;
141 rohm,short-press-ms = <10>;
142 rohm,long-press-ms = <2000>;
146 regulator-name = "buck1";
147 regulator-min-microvolt = <700000>;
148 regulator-max-microvolt = <1300000>;
151 regulator-ramp-delay = <1250>;
152 rohm,dvs-run-voltage = <900000>;
153 rohm,dvs-idle-voltage = <850000>;
154 rohm,dvs-suspend-voltage = <800000>;
157 regulator-name = "buck2";
158 regulator-min-microvolt = <700000>;
159 regulator-max-microvolt = <1300000>;
162 regulator-ramp-delay = <1250>;
163 rohm,dvs-run-voltage = <1000000>;
164 rohm,dvs-idle-voltage = <900000>;
167 regulator-name = "buck3";
168 regulator-min-microvolt = <550000>;
169 regulator-max-microvolt = <1350000>;
173 regulator-name = "buck4";
174 regulator-min-microvolt = <2600000>;
175 regulator-max-microvolt = <3300000>;
179 regulator-name = "buck5";
180 regulator-min-microvolt = <1605000>;
181 regulator-max-microvolt = <1995000>;
185 regulator-name = "buck6";
186 regulator-min-microvolt = <800000>;
187 regulator-max-microvolt = <1400000>;
191 regulator-name = "ldo1";
192 regulator-min-microvolt = <1600000>;
193 regulator-max-microvolt = <3300000>;
197 regulator-name = "ldo2";
198 regulator-min-microvolt = <800000>;
199 regulator-max-microvolt = <900000>;
203 regulator-name = "ldo3";
204 regulator-min-microvolt = <1800000>;
205 regulator-max-microvolt = <3300000>;
208 regulator-name = "ldo4";
209 regulator-min-microvolt = <900000>;
210 regulator-max-microvolt = <1800000>;
213 regulator-name = "ldo5";
214 regulator-min-microvolt = <800000>;
215 regulator-max-microvolt = <3300000>;
218 regulator-name = "ldo6";
219 regulator-min-microvolt = <900000>;
220 regulator-max-microvolt = <1800000>;