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1.. SPDX-License-Identifier: GPL-2.02 3Kernel driver tmp4644====================5 6Supported chips:7 8 * Texas Instruments TMP4649 10 Prefix: 'tmp464'11 12 Addresses scanned: I2C 0x48, 0x49, 0x4a and 0x4b13 14 Datasheet: http://focus.ti.com/docs/prod/folders/print/tmp464.html15 16 * Texas Instruments TMP46817 18 Prefix: 'tmp468'19 20 Addresses scanned: I2C 0x48, 0x49, 0x4a and 0x4b21 22 Datasheet: http://focus.ti.com/docs/prod/folders/print/tmp468.html23 24Authors:25 26 Agathe Porte <agathe.porte@nokia.com>27 Guenter Roeck <linux@roeck-us.net>28 29Description30-----------31 32This driver implements support for Texas Instruments TMP464 and TMP46833temperature sensor chips. TMP464 provides one local and four remote34sensors. TMP468 provides one local and eight remote sensors.35Temperature is measured in degrees Celsius. The chips are wired over36I2C/SMBus and specified over a temperature range of -40 to +125 degrees37Celsius. Resolution for both the local and remote channels is 0.062538degree C.39 40The chips support only temperature measurements. The driver exports41temperature values, limits, and alarms via the following sysfs files:42 43**temp[1-9]_input**44 45**temp[1-9]_max**46 47**temp[1-9]_max_hyst**48 49**temp[1-9]_max_alarm**50 51**temp[1-9]_crit**52 53**temp[1-9]_crit_alarm**54 55**temp[1-9]_crit_hyst**56 57**temp[2-9]_offset**58 59**temp[2-9]_fault**60 61Each sensor can be individually disabled via Devicetree or from sysfs62via:63 64**temp[1-9]_enable**65 66If labels were specified in Devicetree, additional sysfs files will67be present:68 69**temp[1-9]_label**70 71The update interval is configurable with the following sysfs attribute.72 73**update_interval**74