diff options
| author | Michael Walle <michael@walle.cc> | 2020-04-20 20:21:13 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-04-22 21:14:18 +0200 |
| commit | 4406d36dfdf1fbd954400e16ffeb915c1907d58a (patch) | |
| tree | cab71d01eb20818aa975b4c607fc16beb598582e /Documentation/hwmon/bcm54140.rst | |
| parent | net: phy: add Broadcom BCM54140 support (diff) | |
| download | linux-4406d36dfdf1fbd954400e16ffeb915c1907d58a.tar.xz linux-4406d36dfdf1fbd954400e16ffeb915c1907d58a.zip | |
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/bcm54140.rst')
| -rw-r--r-- | Documentation/hwmon/bcm54140.rst | 45 |
1 files changed, 45 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. +======================= ======================================================== |