On Thu, May 08, 2014 at 06:17:32PM +0800, Dong Aisheng wrote: > I just tested an old Chris/mmc-next tree which is 3.14 rc2 with the top > commit is b42b9b. > The eMMC works well on SabreSD boards. > But it failed and got the same issue with latest chris/mmc-next tree. > I noticed there's no changes on sdhci-esdhc-imx.c > Probably some other changes breaks this function. > > Fabio, > You may bisect it yourself or i will do it later when i'm a bit free.
The regression is caused by the following commit ... commit 79f7ae7c45a6ccf04e2908337461dee615f6afb0 Author: Seungwon Jeon <[email protected]> Date: Fri Mar 14 21:11:56 2014 +0900 mmc: clarify DDR timing mode between SD-UHS and eMMC This change distinguishes DDR timing mode of current mixed usage to clarify device type. Signed-off-by: Seungwon Jeon <[email protected]> Acked-by: Jaehoon Chung <[email protected]> Signed-off-by: Ulf Hansson <[email protected]> Signed-off-by: Chris Ball <[email protected]> ... and the line below. @@ -1264,7 +1264,7 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr, goto err; } mmc_card_set_ddr_mode(card); - mmc_set_timing(card->host, MMC_TIMING_UHS_DDR50); + mmc_set_timing(card->host, MMC_TIMING_MMC_DDR52); mmc_set_bus_width(card->host, bus_width); } } > Shawn, > I remember this patch should have been upstream through your tree long time > ago. > http://lists.infradead.org/pipermail/linux-arm-kernel/2013-October/206446.html > It seems somehow missed. Ah, yes. It got lost. Shawn -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
