Re: [PATCH 19/26] docs: i2c: smbus-protocol: improve I2C Block transactions description
From: Jean Delvare <hidden>
Date: 2020-01-21 09:16:47
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linux-i2c, lkml
On Sun, 5 Jan 2020 23:50:05 +0100, Luca Ceresoli wrote:
quoted hunk ↗ jump to hunk
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> --- 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.
Reviewed-by: Jean Delvare <redacted> -- Jean Delvare SUSE L3 Support