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1.. SPDX-License-Identifier: GPL-2.0-only2 3Kernel driver mpq87854=======================5 6Supported chips:7 8 * MPS MPQ87859 10 Prefix: 'mpq8785'11 12Author: Charles Hsu <ythsu0511@gmail.com>13 14Description15-----------16 17The MPQ8785 is a fully integrated, PMBus-compatible, high-frequency, synchronous18buck converter. The MPQ8785 offers a very compact solution that achieves up to1940A output current per phase, with excellent load and line regulation over a20wide input supply range. The MPQ8785 operates at high efficiency over a wide21output current load range.22 23The PMBus interface provides converter configurations and key parameters24monitoring.25 26The MPQ8785 adopts MPS's proprietary multi-phase digital constant-on-time (MCOT)27control, which provides fast transient response and eases loop stabilization.28The MCOT scheme also allows multiple MPQ8785 devices to be connected in parallel29with excellent current sharing and phase interleaving for high-current30applications.31 32Fully integrated protection features include over-current protection (OCP),33over-voltage protection (OVP), under-voltage protection (UVP), and34over-temperature protection (OTP).35 36The MPQ8785 requires a minimal number of readily available, standard external37components, and is available in a TLGA (5mmx6mm) package.38 39Device compliant with:40 41- PMBus rev 1.3 interface.42 43The driver exports the following attributes via the 'sysfs' files44for input voltage:45 46**in1_input**47 48**in1_label**49 50**in1_max**51 52**in1_max_alarm**53 54**in1_min**55 56**in1_min_alarm**57 58**in1_crit**59 60**in1_crit_alarm**61 62The driver provides the following attributes for output voltage:63 64**in2_input**65 66**in2_label**67 68**in2_alarm**69 70The driver provides the following attributes for output current:71 72**curr1_input**73 74**curr1_label**75 76**curr1_max**77 78**curr1_max_alarm**79 80**curr1_crit**81 82**curr1_crit_alarm**83 84The driver provides the following attributes for temperature:85 86**temp1_input**87 88**temp1_max**89 90**temp1_max_alarm**91 92**temp1_crit**93 94**temp1_crit_alarm**95