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1.. SPDX-License-Identifier: GPL-2.02 3Kernel driver xdpe1224=====================5 6Supported chips:7 8 * Infineon XDPE112809 10 Prefix: 'xdpe11280'11 12 * Infineon XDPE1225413 14 Prefix: 'xdpe12254'15 16 * Infineon XDPE1228417 18 Prefix: 'xdpe12284'19 20Authors:21 22 Vadim Pasternak <vadimp@mellanox.com>23 24Description25-----------26 27This driver implements support for Infineon Multi-phase XDPE112 and XDPE12228family dual loop voltage regulators.29These families include XDPE11280, XDPE12284 and XDPE12254 devices.30The 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-DC33 converter specification.34- Intel SVID rev 1.9. protocol.35- PMBus rev 1.3 interface.36 37Devices support linear format for reading input voltage, input and output current,38input and output power and temperature.39Device supports VID format for reading output voltage. The below modes are40supported: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 46Devices support two pages for telemetry.47 48The driver provides for current: input, maximum and critical thresholds49and maximum and critical alarms. Critical thresholds and critical alarm are50supported only for current output.51The driver exports the following attributes for via the sysfs files, where52indexes 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 66The driver provides for voltage: input, critical and low critical thresholds67and critical and low critical alarms.68The driver exports the following attributes for via the sysfs files, where69indexes 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 83The driver provides for power: input and alarms. Power alarm is supported only84for power input.85The driver exports the following attributes for via the sysfs files, where86indexes 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 94The driver provides for temperature: input, maximum and critical thresholds95and maximum and critical alarms.96The 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**107