1# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause 2%YAML 1.2 3--- 4$id: http://devicetree.org/schemas/mfd/rohm,bd9576-pmic.yaml# 5$schema: http://devicetree.org/meta-schemas/core.yaml# 6 7title: ROHM BD9576MUF and BD9573MUF Power Management Integrated Circuit bindings 8 9maintainers: 10 - Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com> 11 12description: | 13 BD9576MUF and BD9573MUF are power management ICs primarily intended for 14 powering the R-Car series processors. 15 The IC provides 6 power outputs with configurable sequencing and safety 16 monitoring. A watchdog logic with slow ping/windowed modes is also included. 17 18properties: 19 compatible: 20 enum: 21 - rohm,bd9576 22 - rohm,bd9573 23 24 reg: 25 description: 26 I2C slave address. 27 maxItems: 1 28 29 interrupts: 30 maxItems: 1 31 32 rohm,vout1-en-low: 33 description: 34 BD9576 and BD9573 VOUT1 regulator enable state can be individually 35 controlled by a GPIO. This is dictated by state of vout1-en pin during 36 the PMIC startup. If vout1-en is LOW during PMIC startup then the VOUT1 37 enable sate is controlled via this pin. Set this property if vout1-en 38 is wired to be down at PMIC start-up. 39 type: boolean 40 41 rohm,vout1-en-gpios: 42 description: 43 GPIO specifier to specify the GPIO connected to vout1-en for vout1 ON/OFF 44 state control. 45 maxItems: 1 46 47 rohm,ddr-sel-low: 48 description: 49 The BD9576 and BD9573 output voltage for DDR can be selected by setting 50 the ddr-sel pin low or high. Set this property if ddr-sel is grounded. 51 type: boolean 52 53 rohm,watchdog-enable-gpios: 54 description: The GPIO line used to enable the watchdog. 55 maxItems: 1 56 57 rohm,watchdog-ping-gpios: 58 description: The GPIO line used to ping the watchdog. 59 maxItems: 1 60 61 rohm,hw-timeout-ms: 62 maxItems: 2 63 description: 64 Watchog timeout in milliseconds. If single value is given it is 65 the maximum timeout. Eg. if pinging watchdog is not done within this time 66 limit the watchdog will be triggered. If two values are given watchdog 67 is configured in "window mode". Then first value is limit for short-ping 68 Eg. if watchdog is pinged sooner than that the watchdog will trigger. 69 When two values is given the second value is the maximum timeout. 70 # (HW) minimum for short timeout is 2ms, maximum 220 ms. 71 # (HW) minimum for max timeout is 4ms, maximum 4416 ms. 72 73 regulators: 74 $ref: ../regulator/rohm,bd9576-regulator.yaml 75 description: 76 List of child nodes that specify the regulators. 77 78required: 79 - compatible 80 - reg 81 - regulators 82 83additionalProperties: false 84 85examples: 86 - | 87 #include <dt-bindings/gpio/gpio.h> 88 #include <dt-bindings/leds/common.h> 89 i2c { 90 #address-cells = <1>; 91 #size-cells = <0>; 92 pmic: pmic@30 { 93 compatible = "rohm,bd9576"; 94 reg = <0x30>; 95 rohm,vout1-en-low; 96 rohm,vout1-en-gpios = <&gpio2 6 GPIO_ACTIVE_HIGH>; 97 rohm,ddr-sel-low; 98 rohm,watchdog-enable-gpios = <&gpio2 6 GPIO_ACTIVE_HIGH>; 99 rohm,watchdog-ping-gpios = <&gpio2 7 GPIO_ACTIVE_HIGH>; 100 rohm,hw-timeout-ms = <150>, <2300>; 101 102 regulators { 103 boost1: regulator-vd50 { 104 regulator-name = "VD50"; 105 }; 106 buck1: regulator-vd18 { 107 regulator-name = "VD18"; 108 }; 109 buck2: regulator-vdddr { 110 regulator-name = "VDDDR"; 111 }; 112 buck3: regulator-vd10 { 113 regulator-name = "VD10"; 114 }; 115 ldo: regulator-voutl1 { 116 regulator-name = "VOUTL1"; 117 }; 118 sw: regulator-vouts1 { 119 regulator-name = "VOUTS1"; 120 }; 121 }; 122 }; 123 }; 124