1 .. SPDX-License-Identifier: GPL-2.0-or-later 1 .. SPDX-License-Identifier: GPL-2.0-or-later
2 2
3 Kernel driver mc34vr500 3 Kernel driver mc34vr500
4 ======================= 4 =======================
5 5
6 Supported Chips: 6 Supported Chips:
7 7
8 * NXP MC34VR500 8 * NXP MC34VR500
9 9
10 Prefix: 'mc34vr500' 10 Prefix: 'mc34vr500'
11 11
12 Datasheet: https://www.nxp.com/docs/en/dat 12 Datasheet: https://www.nxp.com/docs/en/data-sheet/MC34VR500.pdf
13 13
14 Author: Mario Kicherer <dev@kicherer.org> 14 Author: Mario Kicherer <dev@kicherer.org>
15 15
16 Description 16 Description
17 ----------- 17 -----------
18 18
19 This driver implements initial support for the 19 This driver implements initial support for the NXP MC34VR500 PMIC. The MC34VR500
20 monitors the temperature, input voltage and ou 20 monitors the temperature, input voltage and output currents and provides
21 corresponding alarms. For the temperature, the 21 corresponding alarms. For the temperature, the chip can send interrupts if
22 the temperature rises above one of the followi 22 the temperature rises above one of the following values: 110°, 120°, 125° and
23 130° Celsius. For the input voltage, an inter 23 130° Celsius. For the input voltage, an interrupt is sent when the voltage
24 drops below 2.8V. 24 drops below 2.8V.
25 25
26 Currently, this driver only implements the inp 26 Currently, this driver only implements the input voltage and temperature
27 alarms. The interrupts are mapped as follows: 27 alarms. The interrupts are mapped as follows:
28 28
29 <= 2.8V -> in0_min_alarm 29 <= 2.8V -> in0_min_alarm
30 >110°c -> temp1_max_alarm 30 >110°c -> temp1_max_alarm
31 >120°c -> temp1_crit_alarm 31 >120°c -> temp1_crit_alarm
32 >130°c -> temp1_emergency_alarm 32 >130°c -> temp1_emergency_alarm
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