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