124 lines
3.8 KiB
YAML
124 lines
3.8 KiB
YAML
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# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/mfd/rohm,bd9576-pmic.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: ROHM BD9576MUF and BD9573MUF Power Management Integrated Circuit bindings
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maintainers:
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- Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
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description: |
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BD9576MUF and BD9573MUF are power management ICs primarily intended for
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powering the R-Car series processors.
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The IC provides 6 power outputs with configurable sequencing and safety
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monitoring. A watchdog logic with slow ping/windowed modes is also included.
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properties:
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compatible:
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enum:
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- rohm,bd9576
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- rohm,bd9573
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reg:
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description:
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I2C slave address.
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maxItems: 1
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interrupts:
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maxItems: 1
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rohm,vout1-en-low:
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description:
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BD9576 and BD9573 VOUT1 regulator enable state can be individually
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controlled by a GPIO. This is dictated by state of vout1-en pin during
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the PMIC startup. If vout1-en is LOW during PMIC startup then the VOUT1
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enable sate is controlled via this pin. Set this property if vout1-en
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is wired to be down at PMIC start-up.
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type: boolean
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rohm,vout1-en-gpios:
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description:
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GPIO specifier to specify the GPIO connected to vout1-en for vout1 ON/OFF
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state control.
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maxItems: 1
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rohm,ddr-sel-low:
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description:
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The BD9576 and BD9573 output voltage for DDR can be selected by setting
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the ddr-sel pin low or high. Set this property if ddr-sel is grounded.
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type: boolean
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rohm,watchdog-enable-gpios:
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description: The GPIO line used to enable the watchdog.
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maxItems: 1
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rohm,watchdog-ping-gpios:
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description: The GPIO line used to ping the watchdog.
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maxItems: 1
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rohm,hw-timeout-ms:
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maxItems: 2
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description:
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Watchog timeout in milliseconds. If single value is given it is
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the maximum timeout. Eg. if pinging watchdog is not done within this time
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limit the watchdog will be triggered. If two values are given watchdog
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is configured in "window mode". Then first value is limit for short-ping
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Eg. if watchdog is pinged sooner than that the watchdog will trigger.
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When two values is given the second value is the maximum timeout.
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# (HW) minimum for short timeout is 2ms, maximum 220 ms.
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# (HW) minimum for max timeout is 4ms, maximum 4416 ms.
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regulators:
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$ref: ../regulator/rohm,bd9576-regulator.yaml
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description:
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List of child nodes that specify the regulators.
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required:
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- compatible
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- reg
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- regulators
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additionalProperties: false
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examples:
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- |
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#include <dt-bindings/gpio/gpio.h>
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#include <dt-bindings/leds/common.h>
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i2c {
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#address-cells = <1>;
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#size-cells = <0>;
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pmic: pmic@30 {
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compatible = "rohm,bd9576";
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reg = <0x30>;
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rohm,vout1-en-low;
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rohm,vout1-en-gpios = <&gpio2 6 GPIO_ACTIVE_HIGH>;
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rohm,ddr-sel-low;
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rohm,watchdog-enable-gpios = <&gpio2 6 GPIO_ACTIVE_HIGH>;
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rohm,watchdog-ping-gpios = <&gpio2 7 GPIO_ACTIVE_HIGH>;
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rohm,hw-timeout-ms = <150>, <2300>;
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regulators {
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boost1: regulator-vd50 {
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regulator-name = "VD50";
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};
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buck1: regulator-vd18 {
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regulator-name = "VD18";
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};
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buck2: regulator-vdddr {
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regulator-name = "VDDDR";
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};
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buck3: regulator-vd10 {
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regulator-name = "VD10";
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};
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ldo: regulator-voutl1 {
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regulator-name = "VOUTL1";
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};
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sw: regulator-vouts1 {
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regulator-name = "VOUTS1";
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};
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};
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};
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};
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