rohm,bd96802-pmic.yaml

  1# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
  2%YAML 1.2
  3---
  4$id: http://devicetree.org/schemas/mfd/rohm,bd96802-pmic.yaml#
  5$schema: http://devicetree.org/meta-schemas/core.yaml#
  6
  7title: ROHM BD96802 / BD96806 Scalable Power Management Integrated Circuit
  8
  9maintainers:
 10  - Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
 11
 12description: |
 13  BD96802Qxx-C and BD96806 are automotive grade configurable Power Management
 14  Integrated Circuits supporting Functional Safety features for application
 15  processors, SoCs and FPGAs
 16
 17properties:
 18  compatible:
 19    enum:
 20      - rohm,bd96802
 21      - rohm,bd96806
 22
 23  reg:
 24    maxItems: 1
 25
 26  interrupts:
 27    description:
 28      The PMIC provides intb and errb IRQ lines. The errb IRQ line is used
 29      for fatal IRQs which will cause the PMIC to shut down power outputs.
 30      In many systems this will shut down the SoC contolling the PMIC and
 31      connecting/handling the errb can be omitted. However, there are cases
 32      where the SoC is not powered by the PMIC or has a short time backup
 33      energy to handle shutdown of critical hardware. In that case it may be
 34      useful to connect the errb and handle errb events.
 35    minItems: 1
 36    maxItems: 2
 37
 38  interrupt-names:
 39    minItems: 1
 40    items:
 41      - enum: [intb, errb]
 42      - const: errb
 43
 44  regulators:
 45    $ref: ../regulator/rohm,bd96802-regulator.yaml
 46    description:
 47      List of child nodes that specify the regulators.
 48
 49required:
 50  - compatible
 51  - reg
 52  - interrupts
 53  - interrupt-names
 54  - regulators
 55
 56additionalProperties: false
 57
 58examples:
 59  - |
 60    #include <dt-bindings/interrupt-controller/irq.h>
 61    #include <dt-bindings/leds/common.h>
 62    i2c {
 63        #address-cells = <1>;
 64        #size-cells = <0>;
 65        pmic: pmic@62 {
 66            reg = <0x62>;
 67            compatible = "rohm,bd96802";
 68            interrupt-parent = <&gpio1>;
 69            interrupts = <29 IRQ_TYPE_LEVEL_LOW>, <6 IRQ_TYPE_LEVEL_LOW>;
 70            interrupt-names = "intb", "errb";
 71
 72            regulators {
 73                buck1 {
 74                    regulator-name = "buck1";
 75                    regulator-ramp-delay = <1250>;
 76                    /* 0.5V min INITIAL - 150 mV tune */
 77                    regulator-min-microvolt = <350000>;
 78                    /* 3.3V + 150mV tune */
 79                    regulator-max-microvolt = <3450000>;
 80
 81                    /* These can be set only when PMIC is in STBY */
 82                    rohm,initial-voltage-microvolt = <500000>;
 83                    regulator-ov-error-microvolt = <230000>;
 84                    regulator-uv-error-microvolt = <230000>;
 85                    regulator-temp-protection-kelvin = <1>;
 86                    regulator-temp-warn-kelvin = <0>;
 87                };
 88                buck2 {
 89                    regulator-name = "buck2";
 90                    regulator-min-microvolt = <350000>;
 91                    regulator-max-microvolt = <3450000>;
 92
 93                    rohm,initial-voltage-microvolt = <3000000>;
 94                    regulator-ov-error-microvolt = <18000>;
 95                    regulator-uv-error-microvolt = <18000>;
 96                    regulator-temp-protection-kelvin = <1>;
 97                    regulator-temp-warn-kelvin = <1>;
 98                };
 99            };
100        };
101    };