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Diffstat (limited to 'Documentation/hwmon/aspeed-pwm-tacho')
| -rw-r--r-- | Documentation/hwmon/aspeed-pwm-tacho | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/Documentation/hwmon/aspeed-pwm-tacho b/Documentation/hwmon/aspeed-pwm-tacho new file mode 100644 index 000000000000..7cfb34977460 --- /dev/null +++ b/Documentation/hwmon/aspeed-pwm-tacho @@ -0,0 +1,22 @@ +Kernel driver aspeed-pwm-tacho +============================== + +Supported chips: + ASPEED AST2400/2500 + +Authors: + <jaghu@google.com> + +Description: +------------ +This driver implements support for ASPEED AST2400/2500 PWM and Fan Tacho +controller. The PWM controller supports upto 8 PWM outputs. The Fan tacho +controller supports up to 16 tachometer inputs. + +The driver provides the following sensor accesses in sysfs: + +fanX_input ro provide current fan rotation value in RPM as reported + by the fan to the device. + +pwmX rw get or set PWM fan control value. This is an integer + value between 0(off) and 255(full speed). |