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authorWolfram Sang <wsa+renesas@sang-engineering.com>2015-03-23 09:26:38 +0100
committerWolfram Sang <wsa@the-dreams.de>2015-03-27 16:53:39 +0100
commitd0c892f59c918535f902caea63637af87d931d91 (patch)
tree2d0598a81e244481473005d8c4b135a00a761628
parent7c6037508357b553670a713ec537b8a76941b952 (diff)
i2c: slave: add documentation for i2c-slave-eeprom
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Acked-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
-rw-r--r--Documentation/i2c/slave-eeprom-backend14
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diff --git a/Documentation/i2c/slave-eeprom-backend b/Documentation/i2c/slave-eeprom-backend
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+Linux I2C slave eeprom backend
+==============================
+
+by Wolfram Sang <wsa@sang-engineering.com> in 2014-15
+
+This is a proof-of-concept backend which acts like an EEPROM on the connected
+I2C bus. The memory contents can be modified from userspace via this file
+located in sysfs:
+
+ /sys/bus/i2c/devices/<device-direcory>/slave-eeprom
+
+As of 2015, Linux doesn't support poll on binary sysfs files, so there is no
+notfication when another master changed the content.
+

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