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| author | Luca Ceresoli <luca@lucaceresoli.net> | 2020-01-29 18:19:44 +0300 |
|---|---|---|
| committer | Wolfram Sang <wsa@the-dreams.de> | 2020-01-30 00:01:49 +0300 |
| commit | 95b83774e310fa5ef8fc60434ac55fe3dc375adc (patch) | |
| tree | 0518b75e3389f8b9f6825ae73dd9ae7fd6f30e50 /Documentation/i2c | |
| parent | c7148b059c2f88b2b70325cfe45a3271f5c16c43 (diff) | |
| download | linux-95b83774e310fa5ef8fc60434ac55fe3dc375adc.tar.xz | |
docs: i2c: smbus-protocol: improve I2C Block transactions description
Clarify from the beginning what these transactions are, and specifically
how they differ from the SMBus counterparts, i.e. the lack of a Count byte.
Signed-off-by: Luca Ceresoli <luca@lucaceresoli.net>
Reviewed-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Diffstat (limited to 'Documentation/i2c')
| -rw-r--r-- | Documentation/i2c/smbus-protocol.rst | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/Documentation/i2c/smbus-protocol.rst b/Documentation/i2c/smbus-protocol.rst index 7350e4b2c2fa..0edaf6069ac1 100644 --- a/Documentation/i2c/smbus-protocol.rst +++ b/Documentation/i2c/smbus-protocol.rst @@ -282,9 +282,10 @@ This is implemented the following way in the Linux kernel: I2C Block Transactions ====================== -The following I2C block transactions are supported by the -SMBus layer and are described here for completeness. -They are *NOT* defined by the SMBus specification. +The following I2C block transactions are similar to the SMBus Block Read +and Write operations, except these do not have a Count byte. They are +supported by the SMBus layer and are described here for completeness, but +they are *NOT* defined by the SMBus specification. I2C block transactions do not limit the number of bytes transferred but the SMBus layer places a limit of 32 bytes. |