Merging upstream version 6.9.2.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 42 insertions, 0 deletions

diff --git a/Documentation/hwmon/pt5161l.rst b/Documentation/hwmon/pt5161l.rst
new file mode 100644
index 0000000000..1b97336991
--- /dev/null
+++ b/Documentation/hwmon/pt5161l.rst
@@ -0,0 +1,42 @@
+.. 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
+================ ===============================