.. SPDX-License-Identifier: GPL-2.0-or-later

Kernel driver pt5161l

Supported chips:

• Astera Labs PT5161L

  Prefix: 'pt5161l'

  Addresses scanned: I2C 0x20 - 0x27

  Datasheet: Not publicly available.

Authors: Cosmo Chou [email protected]

Description

This driver implements support for temperature monitoring of Astera Labs PT5161L series PCIe retimer chips.

This driver implementation originates from the CSDK available at https://github.com/facebook/openbmc/tree/helium/common/recipes-lib/retimer-v2.14 The communication protocol utilized is based on the I2C/SMBus standard.

Sysfs entries

================ ============================================== temp1_input Measured temperature (in millidegrees Celsius) ================ ==============================================

Debugfs entries

================ =============================== fw_load_status Firmware load status fw_ver Firmware version of the retimer heartbeat_status Heartbeat status ================ ===============================