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| author | hotran <hotran@apm.com> | 2016-07-21 15:37:32 -0700 |
|---|---|---|
| committer | Guenter Roeck <linux@roeck-us.net> | 2016-09-08 21:34:16 -0700 |
| commit | ed42cfa881e1d8d9603b7cb872199e3c8e0d1b19 (patch) | |
| tree | 2cb25d6d7b444c57fa2442c2136cb3a7c150a07b /Documentation/hwmon/xgene-hwmon | |
| parent | 86430c1a66fe490fc97b0970575c223e27dee49d (diff) | |
| download | lwn-ed42cfa881e1d8d9603b7cb872199e3c8e0d1b19.tar.gz lwn-ed42cfa881e1d8d9603b7cb872199e3c8e0d1b19.zip | |
hwmon: Add xgene hwmon driver
This patch adds hardware temperature and power reading support for
APM X-Gene SoC using the mailbox communication interface.
Signed-off-by: Hoan Tran <hotran@apm.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Diffstat (limited to 'Documentation/hwmon/xgene-hwmon')
| -rw-r--r-- | Documentation/hwmon/xgene-hwmon | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/Documentation/hwmon/xgene-hwmon b/Documentation/hwmon/xgene-hwmon new file mode 100644 index 000000000000..6ec50ed7cc8f --- /dev/null +++ b/Documentation/hwmon/xgene-hwmon @@ -0,0 +1,30 @@ +Kernel driver xgene-hwmon +======================== + +Supported chips: + * APM X-Gene SoC + +Description +----------- + +This driver adds hardware temperature and power reading support for +APM X-Gene SoC using the mailbox communication interface. +For device tree, it is the standard DT mailbox. +For ACPI, it is the PCC mailbox. + +The following sensors are supported + + * Temperature + - SoC on-die temperature in milli-degree C + - Alarm when high/over temperature occurs + * Power + - CPU power in uW + - IO power in uW + +sysfs-Interface +--------------- + +temp0_input - SoC on-die temperature (milli-degree C) +temp0_critical_alarm - An 1 would indicates on-die temperature exceeded threshold +power0_input - CPU power in (uW) +power1_input - IO power in (uW) |