Update: On 1/27/20 1:09 PM, Stefan Roese wrote: > On 27.01.20 12:37, Mauro Condarelli wrote: >> Unfortunately this still doesn't work as it should. >> >> I've been doing more tests and I found out MMC/SD *does* >> work, but with a ridiculously low throughput (~20KB/s) >> which is enough to trigger WDT loading uImage. >> >> Adding explicit "max-frequency = <48000000>;" to >> .dts *seems* to cure speed problem, but makes >> transfer unreliable: relatively small files (<200k) >> usually work fine, but larger files invariably exit >> with error: >> >> Error reading cluster >> ** Unable to read file uboot-ram.bin ** >> >> after which mmc subsystem is unusable (till next reset). >> >> @Stefan: do MMC/SD work right on LinkIt/Gardena ? >> apparently neither define mmc section in .dts > > I have zero experience with MMC/SD on these platforms as this IF is > not used on the GARDENA board at all. So sorry, I can't help. > > Thanks, > Stefan MANY Thanks just the same, Stefan!
===8<---- Apparently it's really a speed problem: changing setting to: max-frequency = <24000000>; *seems* to work right (pending more tests). I fear I'll have to wait Weijie input on this. I'll keep this as is now, till further notice. ANY input very welcome. Regards Mauro
