.. 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 <cosmo.chou@quantatw.com>

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
================ ===============================
