Based on kernel version 6.11
. Page generated on 2024-09-24 08:21 EST
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 | Kernel driver lm70 ================== Supported chips: * National Semiconductor LM70 Datasheet: https://www.ti.com/product/LM70 * Texas Instruments TMP121/TMP123 Information: http://focus.ti.com/docs/prod/folders/print/tmp121.html * Texas Instruments TMP122/TMP124 Information: https://www.ti.com/product/tmp122 * Texas Instruments TMP125 Information: https://www.ti.com/product/tmp125 * National Semiconductor LM71 Datasheet: https://www.ti.com/product/LM71 * National Semiconductor LM74 Datasheet: https://www.ti.com/product/LM74 Author: Kaiwan N Billimoria <kaiwan@designergraphix.com> Description ----------- This driver implements support for the National Semiconductor LM70 temperature sensor. The LM70 temperature sensor chip supports a single temperature sensor. It communicates with a host processor (or microcontroller) via an SPI/Microwire Bus interface. Communication with the LM70 is simple: when the temperature is to be sensed, the driver accesses the LM70 using SPI communication: 16 SCLK cycles comprise the MOSI/MISO loop. At the end of the transfer, the 11-bit 2's complement digital temperature (sent via the SIO line), is available in the driver for interpretation. This driver makes use of the kernel's in-core SPI support. As a real (in-tree) example of this "SPI protocol driver" interfacing with a "SPI master controller driver", see drivers/spi/spi_lm70llp.c and its associated documentation. The LM74 and TMP121/TMP122/TMP123/TMP124 are very similar; main difference is 13-bit temperature data (0.0625 degrees celsius resolution). The TMP122/TMP124 also feature configurable temperature thresholds. The TMP125 is less accurate and provides 10-bit temperature data with 0.25 degrees Celsius resolution. The LM71 is also very similar; main difference is 14-bit temperature data (0.03125 degrees celsius resolution). Thanks to --------- Jean Delvare <jdelvare@suse.de> for mentoring the hwmon-side driver development. |