Hi Fabio, Stefan, On Wed, Aug 21, 2024 at 08:01:20AM -0300, Fabio Estevam wrote: > Hi Stefan, > > On Mon, Aug 19, 2024 at 4:20 AM Stefan Eichenberger <eichest@xxxxxxxxx> wrote: > > > > From: Stefan Eichenberger <stefan.eichenberger@xxxxxxxxxxx> > > > > According to the i.MX8M Mini reference manual chapter "16.1.4.2 > > Generation of Start" it is only necessary to poll for bus busy and > > arbitration lost in multi master mode. This helps to avoid rescheduling > > while the i2c bus is busy and avoids SMBus devices to timeout. > > > > Signed-off-by: Stefan Eichenberger <stefan.eichenberger@xxxxxxxxxxx> > > Reviewed-by: Frank Li <Frank.Li@xxxxxxx> > > This fixes a pca953x probe error on an imx8mp board running linux-stable 6.6: > > [ 1.893260] pca953x 2-0020: failed writing register > [ 1.898258] pca953x 2-0020: probe with driver pca953x failed with error -11 > > Could you please add a Fixes tag and Cc stable so that this can reach > the stable kernels? > > Tested-by: Fabio Estevam <festevam@xxxxxxx> > > Thanks a lot, It looks like with this patch, the I2SR_IAL interrupt is not cleared. I would expect some kind of interrupt storm. Can you confirm it? Regards, Oleksij -- Pengutronix e.K. | | Steuerwalder Str. 21 | http://www.pengutronix.de/ | 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
