Hello Andrea,
On 26.05.23 16:56, Andrea Merello wrote:
In the current implementation, in case of I2C arbitration lost, a retry is attempted; the message counter and pointer are reset to the original values and the I2C xfer process is restart from the beginning.
However the message counter and message pointer are respectively decremented and incremented by one before attempting any transfer, causing the 1st transfer not to be actually retried (in case of a single transfer, nothing is actually retried at all).
This patch fixes this: in case of retry, the 1st transfer is also retried.
Tested on a ZynqMP Kria board, with upstream older u-boot, but the involved file and underlying logic seem basically the same.
Signed-off-by: Andrea Merello andrea.merello@iit.it
drivers/i2c/i2c-cdns.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)
Applied to u-boot-i2c.git master
Thanks!
bye, Heiko