On Fri, Oct 02, 2020 at 05:23:04PM +0200, Christian Eggers wrote: > Arbitration Lost (IAL) can happen after every single byte transfer. If > arbitration is lost, the I2C hardware will autonomously switch from > master mode to slave. If a transfer is not aborted in this state, > consecutive transfers will not be executed by the hardware and will > timeout. > > Signed-off-by: Christian Eggers <ceggers@xxxxxxx> > Cc: stable@xxxxxxxxxxxxxxx > --- > drivers/i2c/busses/i2c-imx.c | 18 ++++++++++++++++++ > 1 file changed, 18 insertions(+) > Tested (not extensively) on Vybrid VF500 (Toradex VF50): Tested-by: Krzysztof Kozlowski <krzk@xxxxxxxxxx> The I2C on Vybrid VF500 still works fine. I did not test this actual condition (arbitration) but only a regular I2C driver (BQ27xxx fuel gauge). Obviously this only proves that regular operation is not broken... Alternatively if you have a specific testing procedure (reproduction of a problem), please share. Best regards, Krzysztof
