Hi, On 24/10/2014 16:33, Soeren Moch wrote: > With enabled framebuffer console the printenv command can take several > seconds to complete. This patch temporarily disables cache flush when > writing strings to fb console. Then there is no noticable delay anymore. > > Tested with imx6 hdmi framebuffer. > > Signed-off-by: Soeren Moch <[email protected]> > --- > Cc: Stefano Babic <[email protected]> > --- > drivers/video/cfb_console.c | 9 +++++++++ > 1 file changed, 9 insertions(+) > > diff --git a/drivers/video/cfb_console.c b/drivers/video/cfb_console.c > index 9231927..e7548e1 100644 > --- a/drivers/video/cfb_console.c > +++ b/drivers/video/cfb_console.c > @@ -1160,10 +1160,19 @@ void video_putc(struct stdio_dev *dev, const char c) > > void video_puts(struct stdio_dev *dev, const char *s) > { > + int flush = cfb_do_flush_cache; > int count = strlen(s); > > + /* temporarily disable cache flush */ > + cfb_do_flush_cache = 0; > + > while (count--) > video_putc(dev, *s++); > + > + if (flush) { > + cfb_do_flush_cache = flush; > + flush_cache(VIDEO_FB_ADRS, VIDEO_SIZE); > + } > }
Sure it makes sense that the video is updated only once. Acked-by: Stefano Babic <[email protected]> Best regards, Stefano Babic -- ===================================================================== DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: +49-8142-66989-53 Fax: +49-8142-66989-80 Email: [email protected] ===================================================================== _______________________________________________ U-Boot mailing list [email protected] http://lists.denx.de/mailman/listinfo/u-boot
