Hi Jaehoon, > If card and host are supported DDR mode, then it can be used the DDR > mode. This patch-set has dependency about beomho's patch-set. > (Based-on u-boot-samsung repository) > > http://patchwork.ozlabs.org/patch/331986/ > http://patchwork.ozlabs.org/patch/331987/ > http://patchwork.ozlabs.org/patch/331989/ > http://patchwork.ozlabs.org/patch/331988/ > > It's result for loading image. > > sdhci controller ->5260488 bytes read in 259 ms (19.4 MiB/s) > dwmmc controller without DDR mode -> 5260488 bytes read in 202 ms > (24.8 MiB/s) dwmmc controller with DDR mode -> 5260488 bytes read in > 118 ms (42.5 MiB/s) > > Download the 400M image with lthor. > sdhci controller -> 59.4sec (Avg 6.95 MB/s) > dwmmc controller without DDR mode -> 61.6sec (Avg 6.72MB/s) > dwmmc controller with DDR mode -> 60.4sec (Avg 6.85MB/s)
With downloading we aren't observing time improvement for downloading the test image and flashing it, because of the time consuming crc32 calculation. After applying the patch: http://patchwork.ozlabs.org/patch/335223/ The time itself reduces significantly to less than 20 seconds. In spite of the above I've tested this patch set on Trats2, so Tested-by: Lukasz Majewski <l.majew...@samsung.com> Acked-by: Lukasz Majewski <l.majew...@samsung.com> -- Best regards, Lukasz Majewski Samsung R&D Institute Poland (SRPOL) | Linux Platform Group _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
