[PATCH] i2c: bcm2835: Set up the clock stretching timeout at boot.

Eric Anholt eric at anholt.net
Sun Jul 3 18:02:32 PDT 2016


Wolfram Sang <wsa at the-dreams.de> writes:

>> +	/*
>> +	 * SMBUS says "Devices participating in a transfer will
>> +	 * timeout when any clock low exceeds the value of
>> +	 * T_TIMEOUT,MIN of 25 ms."
>> +	 */
>
> SMBus has that timeout, but I2C doesn't. How about disabling the timeout
> simply? Or using the max value if you want to keep the timeout
> detection?

Disabling the timeout seems fine to me.  We still have a 1-second
timeout around the entire transfer.  I'll be back on my DSI branch this
week and test it out then.
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 818 bytes
Desc: not available
URL: <http://lists.infradead.org/pipermail/linux-arm-kernel/attachments/20160703/83f4c082/attachment.sig>


More information about the linux-arm-kernel mailing list