diff options
Diffstat (limited to 'Documentation/hwmon')
| -rw-r--r-- | Documentation/hwmon/ntc_thermistor | 6 | ||||
| -rw-r--r-- | Documentation/hwmon/submitting-patches | 7 | ||||
| -rw-r--r-- | Documentation/hwmon/tc74 | 20 | ||||
| -rw-r--r-- | Documentation/hwmon/w83792d | 18 |
4 files changed, 44 insertions, 7 deletions
diff --git a/Documentation/hwmon/ntc_thermistor b/Documentation/hwmon/ntc_thermistor index c5e05e290..1d4cc847c 100644 --- a/Documentation/hwmon/ntc_thermistor +++ b/Documentation/hwmon/ntc_thermistor @@ -2,8 +2,10 @@ Kernel driver ntc_thermistor ================= Supported thermistors from Murata: -* Murata NTC Thermistors NCP15WB473, NCP18WB473, NCP21WB473, NCP03WB473, NCP15WL333 - Prefixes: 'ncp15wb473', 'ncp18wb473', 'ncp21wb473', 'ncp03wb473', 'ncp15wl333' +* Murata NTC Thermistors NCP15WB473, NCP18WB473, NCP21WB473, NCP03WB473, + NCP15WL333, NCP03WF104 + Prefixes: 'ncp15wb473', 'ncp18wb473', 'ncp21wb473', 'ncp03wb473', + 'ncp15wl333', 'ncp03wf104' Datasheet: Publicly available at Murata Supported thermistors from EPCOS: diff --git a/Documentation/hwmon/submitting-patches b/Documentation/hwmon/submitting-patches index 3d1bac399..d201828d2 100644 --- a/Documentation/hwmon/submitting-patches +++ b/Documentation/hwmon/submitting-patches @@ -81,6 +81,13 @@ increase the chances of your change being accepted. * Provide a detect function if and only if a chip can be detected reliably. +* Only the following I2C addresses shall be probed: 0x18-0x1f, 0x28-0x2f, + 0x48-0x4f, 0x58, 0x5c, 0x73 and 0x77. Probing other addresses is strongly + discouraged as it is known to cause trouble with other (non-hwmon) I2C + chips. If your chip lives at an address which can't be probed then the + device will have to be instantiated explicitly (which is always better + anyway.) + * Avoid writing to chip registers in the detect function. If you have to write, only do it after you have already gathered enough data to be certain that the detection is going to be successful. diff --git a/Documentation/hwmon/tc74 b/Documentation/hwmon/tc74 new file mode 100644 index 000000000..43027aad5 --- /dev/null +++ b/Documentation/hwmon/tc74 @@ -0,0 +1,20 @@ +Kernel driver tc74 +==================== + +Supported chips: + * Microchip TC74 + Prefix: 'tc74' + Datasheet: Publicly available at Microchip website. + +Description +----------- + +Driver supports the above part. + +The tc74 has an 8-bit sensor, with 1 degree centigrade resolution +and +- 2 degrees centigrade accuracy. + +Notes +----- + +Currently entering low power standby mode is not supported. diff --git a/Documentation/hwmon/w83792d b/Documentation/hwmon/w83792d index 53f7b6866..f2ffc402e 100644 --- a/Documentation/hwmon/w83792d +++ b/Documentation/hwmon/w83792d @@ -8,6 +8,7 @@ Supported chips: Datasheet: http://www.winbond.com.tw Author: Shane Huang (Winbond) +Updated: Roger Lucas Module Parameters @@ -38,9 +39,16 @@ parameter; this will put it into a more well-behaved state first. The driver implements three temperature sensors, seven fan rotation speed sensors, nine voltage sensors, and two automatic fan regulation strategies called: Smart Fan I (Thermal Cruise mode) and Smart Fan II. -Automatic fan control mode is possible only for fan1-fan3. Fan4-fan7 can run -synchronized with selected fan (fan1-fan3). This functionality and manual PWM -control for fan4-fan7 is not yet implemented. + +The driver also implements up to seven fan control outputs: pwm1-7. Pwm1-7 +can be configured to PWM output or Analogue DC output via their associated +pwmX_mode. Outputs pwm4 through pwm7 may or may not be present depending on +how the W83792AD/D was configured by the BIOS. + +Automatic fan control mode is possible only for fan1-fan3. + +For all pwmX outputs, a value of 0 means minimum fan speed and a value of +255 means maximum fan speed. Temperatures are measured in degrees Celsius and measurement resolution is 1 degC for temp1 and 0.5 degC for temp2 and temp3. An alarm is triggered when @@ -157,14 +165,14 @@ for each fan. /sys files ---------- -pwm[1-3] - this file stores PWM duty cycle or DC value (fan speed) in range: +pwm[1-7] - this file stores PWM duty cycle or DC value (fan speed) in range: 0 (stop) to 255 (full) pwm[1-3]_enable - this file controls mode of fan/temperature control: * 0 Disabled * 1 Manual mode * 2 Smart Fan II * 3 Thermal Cruise -pwm[1-3]_mode - Select PWM of DC mode +pwm[1-7]_mode - Select PWM or DC mode * 0 DC * 1 PWM thermal_cruise[1-3] - Selects the desired temperature for cruise (degC) |