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module/cdns_i2c: Enhance I2C error handling

Darryl Green requested to merge github/fork/anukou/master into master

Created by: anukou

Bump up the I2C interface timeout to the maximum value supported by the IP. This is particularly useful when communicating with slow I2C target devices.

Also, reset the I2C FIFO at the start of a Tx/Rx sequence in order to clear any error state latched for a previously failed transaction.

Change-Id: I3c7aa91fcc5515c41c482cdc0249b6b0024ad616 Signed-off-by: Anurag Koul

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