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OSCL-LXR

 
 

    


0001 Kernel driver tmp401
0002 ====================
0003 
0004 Supported chips:
0005 
0006   * Texas Instruments TMP401
0007 
0008     Prefix: 'tmp401'
0009 
0010     Addresses scanned: I2C 0x4c
0011 
0012     Datasheet: http://focus.ti.com/docs/prod/folders/print/tmp401.html
0013 
0014   * Texas Instruments TMP411
0015 
0016     Prefix: 'tmp411'
0017 
0018     Addresses scanned: I2C 0x4c, 0x4d, 0x4e
0019 
0020     Datasheet: http://focus.ti.com/docs/prod/folders/print/tmp411.html
0021 
0022   * Texas Instruments TMP431
0023 
0024     Prefix: 'tmp431'
0025 
0026     Addresses scanned: I2C 0x4c, 0x4d
0027 
0028     Datasheet: http://focus.ti.com/docs/prod/folders/print/tmp431.html
0029 
0030   * Texas Instruments TMP432
0031 
0032     Prefix: 'tmp432'
0033 
0034     Addresses scanned: I2C 0x4c, 0x4d
0035 
0036     Datasheet: http://focus.ti.com/docs/prod/folders/print/tmp432.html
0037 
0038   * Texas Instruments TMP435
0039 
0040     Prefix: 'tmp435'
0041 
0042     Addresses scanned: I2C 0x48 - 0x4f
0043 
0044     Datasheet: http://focus.ti.com/docs/prod/folders/print/tmp435.html
0045 
0046 
0047 
0048 Authors:
0049 
0050         - Hans de Goede <hdegoede@redhat.com>
0051         - Andre Prendel <andre.prendel@gmx.de>
0052 
0053 Description
0054 -----------
0055 
0056 This driver implements support for Texas Instruments TMP401, TMP411,
0057 TMP431, TMP432, and TMP435 chips. These chips implement one or two
0058 remote and one local temperature sensors. Temperature is measured in degrees
0059 Celsius. Resolution of the remote sensor is 0.0625 degree. Local
0060 sensor resolution can be set to 0.5, 0.25, 0.125 or 0.0625 degree (not
0061 supported by the driver so far, so using the default resolution of 0.5
0062 degree).
0063 
0064 The driver provides the common sysfs-interface for temperatures (see
0065 Documentation/hwmon/sysfs-interface.rst under Temperatures).
0066 
0067 The TMP411 and TMP431 chips are compatible with TMP401. TMP411 provides
0068 some additional features.
0069 
0070 * Minimum and Maximum temperature measured since power-on, chip-reset
0071 
0072   Exported via sysfs attributes tempX_lowest and tempX_highest.
0073 
0074 * Reset of historical minimum/maximum temperature measurements
0075 
0076   Exported via sysfs attribute temp_reset_history. Writing 1 to this
0077   file triggers a reset.
0078 
0079 TMP432 is compatible with TMP401 and TMP431. It supports two external
0080 temperature sensors.