Index: linux-2.6.39.4/drivers/mmc/host/at91_mci.c =================================================================== --- linux-2.6.39.4.orig/drivers/mmc/host/at91_mci.c 2012-09-10 14:29:38.217293988 -0500 +++ linux-2.6.39.4/drivers/mmc/host/at91_mci.c 2012-09-10 14:41:35.352414089 -0500 @@ -724,7 +724,8 @@ else clkdiv = (at91_master_clock / ios->clock) / 2; - pr_debug("clkdiv = %d. mcck = %ld\n", clkdiv, + pr_info("MMC: requested clock: %ld\n", ios->clock); + pr_info("MMC: clkdiv = %d. mcck = %ld\n", clkdiv, at91_master_clock / (2 * (clkdiv + 1))); } if (ios->bus_width == MMC_BUS_WIDTH_4 && host->board->wire4) {