1.. SPDX-License-Identifier: GPL-2.0-or-later 2 3Kernel driver pt5161l 4===================== 5 6Supported chips: 7 8 * Astera Labs PT5161L 9 10 Prefix: 'pt5161l' 11 12 Addresses scanned: I2C 0x20 - 0x27 13 14 Datasheet: Not publicly available. 15 16Authors: Cosmo Chou <cosmo.chou@quantatw.com> 17 18Description 19----------- 20 21This driver implements support for temperature monitoring of Astera Labs 22PT5161L series PCIe retimer chips. 23 24This driver implementation originates from the CSDK available at 25https://github.com/facebook/openbmc/tree/helium/common/recipes-lib/retimer-v2.14 26The communication protocol utilized is based on the I2C/SMBus standard. 27 28Sysfs entries 29---------------- 30 31================ ============================================== 32temp1_input Measured temperature (in millidegrees Celsius) 33================ ============================================== 34 35Debugfs entries 36---------------- 37 38================ =============================== 39fw_load_status Firmware load status 40fw_ver Firmware version of the retimer 41heartbeat_status Heartbeat status 42================ =============================== 43