From ed42cfa881e1d8d9603b7cb872199e3c8e0d1b19 Mon Sep 17 00:00:00 2001 From: hotran Date: Thu, 21 Jul 2016 15:37:32 -0700 Subject: 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 Reviewed-by: Guenter Roeck Signed-off-by: Guenter Roeck --- Documentation/hwmon/xgene-hwmon | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) create mode 100644 Documentation/hwmon/xgene-hwmon (limited to 'Documentation/hwmon') 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) -- cgit v1.2.3