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authorMichael Walle <michael@walle.cc>2020-04-20 20:21:13 +0200
committerDavid S. Miller <davem@davemloft.net>2020-04-22 12:14:18 -0700
commit4406d36dfdf1fbd954400e16ffeb915c1907d58a (patch)
treecab71d01eb20818aa975b4c607fc16beb598582e /Documentation/hwmon
parent6937602ed3f9ebd46ed6a6b5e609c0ae4ed99008 (diff)
net: phy: bcm54140: add hwmon support
The PHY supports monitoring its die temperature as well as two analog voltages. Add support for it. Signed-off-by: Michael Walle <michael@walle.cc> Acked-by: Guenter Roeck <linux@roeck-us.net> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'Documentation/hwmon')
-rw-r--r--Documentation/hwmon/bcm54140.rst45
-rw-r--r--Documentation/hwmon/index.rst1
2 files changed, 46 insertions, 0 deletions
diff --git a/Documentation/hwmon/bcm54140.rst b/Documentation/hwmon/bcm54140.rst
new file mode 100644
index 000000000000..bc6ea4b45966
--- /dev/null
+++ b/Documentation/hwmon/bcm54140.rst
@@ -0,0 +1,45 @@
+.. SPDX-License-Identifier: GPL-2.0-only
+
+Broadcom BCM54140 Quad SGMII/QSGMII PHY
+=======================================
+
+Supported chips:
+
+ * Broadcom BCM54140
+
+ Datasheet: not public
+
+Author: Michael Walle <michael@walle.cc>
+
+Description
+-----------
+
+The Broadcom BCM54140 is a Quad SGMII/QSGMII PHY which supports monitoring
+its die temperature as well as two analog voltages.
+
+The AVDDL is a 1.0V analogue voltage, the AVDDH is a 3.3V analogue voltage.
+Both voltages and the temperature are measured in a round-robin fashion.
+
+Sysfs entries
+-------------
+
+The following attributes are supported.
+
+======================= ========================================================
+in0_label "AVDDL"
+in0_input Measured AVDDL voltage.
+in0_min Minimum AVDDL voltage.
+in0_max Maximum AVDDL voltage.
+in0_alarm AVDDL voltage alarm.
+
+in1_label "AVDDH"
+in1_input Measured AVDDH voltage.
+in1_min Minimum AVDDH voltage.
+in1_max Maximum AVDDH voltage.
+in1_alarm AVDDH voltage alarm.
+
+temp1_input Die temperature.
+temp1_min Minimum die temperature.
+temp1_max Maximum die temperature.
+temp1_alarm Die temperature alarm.
+======================= ========================================================
diff --git a/Documentation/hwmon/index.rst b/Documentation/hwmon/index.rst
index 8ef62fd39787..1f0affb3b6e0 100644
--- a/Documentation/hwmon/index.rst
+++ b/Documentation/hwmon/index.rst
@@ -42,6 +42,7 @@ Hardware Monitoring Kernel Drivers
asb100
asc7621
aspeed-pwm-tacho
+ bcm54140
bel-pfe
coretemp
da9052