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 |