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Commit 21b76618 authored by Subhash Jadavani's avatar Subhash Jadavani
Browse files

mmc: core: prefer SDR50 mode over DDR50 for SD card 



If Ultra High Speed SD card supports both SDR50 and DDR50 modes then
this change will give preference to SDR50 over DDR50 mode as it seems
to be more reliable for board designs. While we are doing this, this
change also fixes some indentation issues in the function we are have
modified.

Change-Id: Ifa075563ec41f43584d93f669caecbaed9369e24
Signed-off-by: default avatarSubhash Jadavani <subhashj@codeaurora.org>
parent 16496105

drivers/mmc/core/sd.c

+8 −8
Original line number Diff line number Diff line
@@ -433,15 +433,15 @@ static void sd_update_bus_speed_mode(struct mmc_card *card) 
	    (card->sw_caps.sd3_bus_mode & SD_MODE_UHS_SDR104) &&

	    (card->host->f_max > UHS_SDR104_MIN_DTR)) {

		card->sd_bus_speed = UHS_SDR104_BUS_SPEED;

	} else if ((card->host->caps & MMC_CAP_UHS_DDR50) &&

		   (card->sw_caps.sd3_bus_mode & SD_MODE_UHS_DDR50) &&

		    (card->host->f_max > UHS_DDR50_MIN_DTR)) {

			card->sd_bus_speed = UHS_DDR50_BUS_SPEED;

	} else if ((card->host->caps & (MMC_CAP_UHS_SDR104 |

		    MMC_CAP_UHS_SDR50)) && (card->sw_caps.sd3_bus_mode &

		    SD_MODE_UHS_SDR50) &&

		    (card->host->f_max > UHS_SDR50_MIN_DTR)) {

		card->sd_bus_speed = UHS_SDR50_BUS_SPEED;

	} else if ((card->host->caps & MMC_CAP_UHS_DDR50) &&

		   (card->sw_caps.sd3_bus_mode & SD_MODE_UHS_DDR50) &&

		    (card->host->f_max > UHS_DDR50_MIN_DTR)) {

		card->sd_bus_speed = UHS_DDR50_BUS_SPEED;

	} else if ((card->host->caps & (MMC_CAP_UHS_SDR104 |

		    MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR25)) &&

		   (card->sw_caps.sd3_bus_mode & SD_MODE_UHS_SDR25) &&