On 12 August 2015 at 14:35, Hans de Goede <[email protected]> wrote: > Hi, > > On 12-08-15 14:23, Michal Suchanek wrote: >> >> When core does not set the MMC_QUIRK_BROKEN_CLK_GATING flag enable >> automatic hardware controlled clock gating on the mmc interface. >> >> Signed-off-by: Michal Suchanek <[email protected]> > > > In general this looks good, but I wonder how intensively this has > been tested ?
Unlike the wrong timeout it does not cause the boards to crash frequently ;-) It would be nice if somebody actively using some board atm tested this. > Also given the long latencies when using manual > clock on/off support, have you done any testing to check what I suspect the long latency is due to the controller flushing data to the card or something like that since it happens only under load. > sort of latencies this adds, e.g. Both with and without > the patch, dump all the filesystem caches: > > echo 3 > /proc/sys/vm/drop_caches > > And then do: > > time cat /some/small/file/on/the/sdcard > > Do this at least 3 time both with and without the patch, and see > if there are any noticable differences ? Yes, it would be good idea to test. Thanks Michal -- You received this message because you are subscribed to the Google Groups "linux-sunxi" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
