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
7 title: ROHM BD9576MUF and BD9573MUF Power Management Integrated Circuit
8
9 maintainers:
10 - Matti Vaittinen <mazziesaccount@gmail.com>
11
12 description: |
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
18 properties:
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 state 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 Watchdog 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: /schemas/regulator/rohm,bd9576-regulator.yaml
75 description:
76 List of child nodes that specify the regulators.
77
78 required:
79 - compatible
80 - reg
81 - regulators
82
83 additionalProperties: false
84
85 examples:
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 };
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