From: Luca Ceresoli Date: Wed, 29 Jan 2020 15:19:44 +0000 (+0100) Subject: docs: i2c: smbus-protocol: improve I2C Block transactions description X-Git-Tag: v5.15~4517^2~17 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=95b83774e310fa5ef8fc60434ac55fe3dc375adc;p=platform%2Fkernel%2Flinux-starfive.git 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 Reviewed-by: Jean Delvare Signed-off-by: Wolfram Sang --- diff --git a/Documentation/i2c/smbus-protocol.rst b/Documentation/i2c/smbus-protocol.rst index 7350e4b..0edaf60 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.