Messages in this thread Patch in this message | | | From | Luca Ceresoli <> | Subject | [PATCH v2 19/28] docs: i2c: smbus-protocol: improve I2C Block transactions description | Date | Thu, 23 Jan 2020 15:56:17 +0100 |
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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> --- Documentation/i2c/smbus-protocol.rst | 7 ++++--- 1 file 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. -- 2.25.0
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