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Diffstat (limited to 'Documentation/hwmon/aspeed-pwm-tacho.rst')
| -rw-r--r-- | Documentation/hwmon/aspeed-pwm-tacho.rst | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/Documentation/hwmon/aspeed-pwm-tacho.rst b/Documentation/hwmon/aspeed-pwm-tacho.rst new file mode 100644 index 000000000000..6dcec845fbc7 --- /dev/null +++ b/Documentation/hwmon/aspeed-pwm-tacho.rst @@ -0,0 +1,24 @@ +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). +=============== ======= ===================================================== |