From 9781725fb1b6568133f50ec0ffc73b6c378256ad Mon Sep 17 00:00:00 2001 From: Kishore Kadiyala Date: Wed, 17 Feb 2010 19:34:47 +0530 Subject: [PATCH 31/45] Fix for bus width which improves SD card's peformance. This patch fixes bus width which improves peformance for SD cards. OMAP-MMC controller's can support maximum bus width of '8'. when bus width is mentioned as "8" in controller data,the SD stack will check whether bus width is "4" and if not it will set bus width to "1" and there by degrading peformance. Signed-off-by: Kishore Kadiyala --- drivers/mmc/host/omap_hsmmc.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c index fa94580..9646a75 100644 --- a/drivers/mmc/host/omap_hsmmc.c +++ b/drivers/mmc/host/omap_hsmmc.c @@ -1776,7 +1776,7 @@ static int __init omap_hsmmc_probe(struct platform_device *pdev) MMC_CAP_WAIT_WHILE_BUSY; if (mmc_slot(host).wires >= 8) - mmc->caps |= MMC_CAP_8_BIT_DATA; + mmc->caps |= (MMC_CAP_8_BIT_DATA | MMC_CAP_4_BIT_DATA); else if (mmc_slot(host).wires >= 4) mmc->caps |= MMC_CAP_4_BIT_DATA; -- 1.6.6.1