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docs: i2c: i2c-protocol: properly name start and stop conditions

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In I2C there is no such thing as a "start bit" or a "stop bit". Use the
proper naming: "start condition" and "stop condition".

Signed-off-by: Luca Ceresoli <luca@lucaceresoli.net>
Reviewed-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
This commit is contained in:
Luca Ceresoli 2020-01-29 16:19:33 +01:00 committed by Wolfram Sang
parent f72beb8bf9
commit f954731d2a
1 changed files with 8 additions and 7 deletions
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15
Documentation/i2c/i2c-protocol.rst
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@ -8,8 +8,8 @@ Key to symbols
==============
=============== =============================================================
S (1 bit) : Start bit
P (1 bit) : Stop bit
S : Start condition
P : Stop condition
Rd/Wr (1 bit) : Read/Write bit. Rd equals 1, Wr equals 0.
A, NA (1 bit) : Accept and reverse accept bit.
Addr (7 bits): I2C 7 bit address. Note that this can be expanded as usual to
@ -46,9 +46,9 @@ Combined transactions
This corresponds to i2c_transfer().
They are just like the above transactions, but instead of a stop bit P
a start bit S is sent and the transaction continues. An example of
a byte read, followed by a byte write::
They are just like the above transactions, but instead of a stop
condition P a start condition S is sent and the transaction continues.
An example of a byte read, followed by a byte write::
S Addr Rd [A] [Data] NA S Addr Wr [A] Data [A] P
@ -77,8 +77,9 @@ I2C_M_NOSTART:
S Addr Rd [A] [Data] NA Data [A] P
If you set the I2C_M_NOSTART variable for the first partial message,
we do not generate Addr, but we do generate the startbit S. This will
probably confuse all other clients on your bus, so don't try this.
we do not generate Addr, but we do generate the start condition S.
This will probably confuse all other clients on your bus, so don't
try this.
This is often used to gather transmits from multiple data buffers in
system memory into something that appears as a single transfer to the