Hi Markus, On Thu, Sep 05, 2013 at 03:31:20PM +0200, Markus Niebel wrote: > From: Markus Niebel <Markus.Niebel@xxxxxx> > > Signed-off-by: Markus Niebel <Markus.Niebel@xxxxxx> > > At least i.MX53 has errata ENGcm12360: > > Occurs when a pending command which issues busy is completed. > For a command with R1b response, the proper software sequence > is to poll the DLA for R1b commands to determine busy > state completion. The DLA polling is not working properly for > the ESDHC module. This is relevant for all eSDHC ports (eSDHC1-4 ports) > > DLA bit in PRSSTAT register cannot be > polled to wait for busy state completion. > > Updated block guide to reflect that DLA is not applicable to detect > busy state, instead, should poll bit 24 in PRSSTAT register (DLSL[0] bit) > to check that wait busy state is over. I'll give it a try in the -next branch. The patch looks as if it is safe on other SoCs, but let's see. Sascha -- Pengutronix e.K. | | Industrial Linux Solutions | http://www.pengutronix.de/ | Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 | _______________________________________________ barebox mailing list barebox@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/barebox
