1 .. SPDX-License-Identifier: GPL-2.0 2 3 Kernel driver xdpe122 4 ===================== 5 6 Supported chips: 7 8 * Infineon XDPE11280 9 10 Prefix: 'xdpe11280' 11 12 * Infineon XDPE12254 13 14 Prefix: 'xdpe12254' 15 16 * Infineon XDPE12284 17 18 Prefix: 'xdpe12284' 19 20 Authors: 21 22 Vadim Pasternak <vadimp@mellanox.com> 23 24 Description 25 ----------- 26 27 This driver implements support for Infineon Multi-phase XDPE112 and XDPE122 28 family dual loop voltage regulators. 29 These families include XDPE11280, XDPE12284 and XDPE12254 devices. 30 The devices from this family compliant with: 31 32 - Intel VR13 and VR13HC rev 1.3, IMVP8 rev 1.2 and IMPVP9 rev 1.3 DC-DC 33 converter specification. 34 - Intel SVID rev 1.9. protocol. 35 - PMBus rev 1.3 interface. 36 37 Devices support linear format for reading input voltage, input and output current, 38 input and output power and temperature. 39 Device supports VID format for reading output voltage. The below modes are 40 supported: 41 - VR12.0 mode, 5-mV DAC - 0x01. 42 - VR12.5 mode, 10-mV DAC - 0x02. 43 - IMVP9 mode, 5-mV DAC - 0x03. 44 - AMD mode 6.25mV - 0x10. 45 46 Devices support two pages for telemetry. 47 48 The driver provides for current: input, maximum and critical thresholds 49 and maximum and critical alarms. Critical thresholds and critical alarm are 50 supported only for current output. 51 The driver exports the following attributes for via the sysfs files, where 52 indexes 1, 2 are for "iin" and 3, 4 for "iout": 53 54 **curr[3-4]_crit** 55 56 **curr[3-4]_crit_alarm** 57 58 **curr[1-4]_input** 59 60 **curr[1-4]_label** 61 62 **curr[1-4]_max** 63 64 **curr[1-4]_max_alarm** 65 66 The driver provides for voltage: input, critical and low critical thresholds 67 and critical and low critical alarms. 68 The driver exports the following attributes for via the sysfs files, where 69 indexes 1, 2 are for "vin" and 3, 4 for "vout": 70 71 **in[1-4]_crit** 72 73 **in[1-4_crit_alarm** 74 75 **in[1-4]_input** 76 77 **in[1-4_label** 78 79 **in[1-4]_lcrit** 80 81 **in[1-41_lcrit_alarm** 82 83 The driver provides for power: input and alarms. Power alarm is supported only 84 for power input. 85 The driver exports the following attributes for via the sysfs files, where 86 indexes 1, 2 are for "pin" and 3, 4 for "pout": 87 88 **power[1-2]_alarm** 89 90 **power[1-4]_input** 91 92 **power[1-4]_label** 93 94 The driver provides for temperature: input, maximum and critical thresholds 95 and maximum and critical alarms. 96 The driver exports the following attributes for via the sysfs files: 97 98 **temp[1-2]_crit** 99 100 **temp[1-2]_crit_alarm** 101 102 **temp[1-2]_input** 103 104 **temp[1-2]_max** 105 106 **temp[1-2]_max_alarm**
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