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authorWolfram Sang <wsa+renesas@sang-engineering.com>2024-06-21 09:30:10 +0200
committerWolfram Sang <wsa+renesas@sang-engineering.com>2024-06-22 10:11:47 +0200
commita5b88cb9fdff337a2867f0dff7c5cd23d4bd6663 (patch)
tree6d2d2d7c4d39cf3f06ff07112ec9a36a12888652 /Documentation/i2c/summary.rst
parentdocs: i2c: summary: update I2C specification link (diff)
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docs: i2c: summary: update speed mode description
Fastest I2C mode is 5 MHz. Update the docs and reword the paragraph slightly. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Reviewed-by: Easwar Hariharan <eahariha@linux.microsoft.com> Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
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@@ -3,8 +3,8 @@ Introduction to I2C and SMBus
=============================
I²C (pronounce: I squared C and written I2C in the kernel documentation) is
-a protocol developed by Philips. It is a slow two-wire protocol (variable
-speed, up to 400 kHz), with a high speed extension (3.4 MHz). It provides
+a protocol developed by Philips. It is a two-wire protocol with variable
+speed (typically up to 400 kHz, high speed modes up to 5 MHz). It provides
an inexpensive bus for connecting many types of devices with infrequent or
low bandwidth communications needs. I2C is widely used with embedded
systems. Some systems use variants that don't meet branding requirements,