> > Assuming that recover_bus is not called on BUS_BUSY but on TIMEOUTs,, > > this should work? > How do you differentiate these two? You're machine boots and sees sda > being low. How long should it wait for action on sda or scl until it can > diagnose a timeout?
Timeout value. I consider I2C a static bus with no hotplugging. So, either we have seen a START bit and know we are inside a transaction or SDA is low because a slave is in an unknown state. > > This scl check should not depend on skip_sda_polling, or? > Well right. But note this might also just be a slave doing clock > streching. Which is a good reason to exit recovery. Thanks, Wolfram -- Pengutronix e.K. | Wolfram Sang | Industrial Linux Solutions | http://www.pengutronix.de/ |
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