Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 69 insertions, 0 deletions

diff --git a/Documentation/hwmon/lm70.rst b/Documentation/hwmon/lm70.rst
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+Kernel driver lm70
+==================
+
+Supported chips:
+
+  * National Semiconductor LM70
+
+    Datasheet: http://www.national.com/pf/LM/LM70.html
+
+  * 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.