i2c: add binding to mark a bus as SMBus

Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git

kernel os linux

SMBus is largely compatible with I2C but there are some specifics. In
case we need them on a bus, we can now use this new binding.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>

authored by

Wolfram Sang and committed by

Wolfram Sang 5 years ago e6277308 60a9f851

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Documentation

devicetree

bindings

i2c

i2c.txt

Documentation/devicetree/bindings/i2c/i2c.txt

··· 87 87 this information to detect a stalled bus more reliably, for example. 88 88 Can not be combined with 'multi-master'. 89 89 90 + - smbus 91 + states that additional SMBus restrictions and features apply to this bus. 92 + Examples of features are SMBusHostNotify and SMBusAlert. Examples of 93 + restrictions are more reserved addresses and timeout definitions. 94 + 90 95 Required properties (per child device) 91 96 -------------------------------------- 92 97