diff options
Diffstat (limited to 'recipes/linux/linux-omap-psp-2.6.32/0030-Fix-for-bus-width-which-improves-SD-card-s-peformanc.patch')
| -rw-r--r-- | recipes/linux/linux-omap-psp-2.6.32/0030-Fix-for-bus-width-which-improves-SD-card-s-peformanc.patch | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/recipes/linux/linux-omap-psp-2.6.32/0030-Fix-for-bus-width-which-improves-SD-card-s-peformanc.patch b/recipes/linux/linux-omap-psp-2.6.32/0030-Fix-for-bus-width-which-improves-SD-card-s-peformanc.patch new file mode 100644 index 0000000000..5650006925 --- /dev/null +++ b/recipes/linux/linux-omap-psp-2.6.32/0030-Fix-for-bus-width-which-improves-SD-card-s-peformanc.patch @@ -0,0 +1,32 @@ +From 19ecb9ad009ce48d903d225ab511539a03a7867b Mon Sep 17 00:00:00 2001 +From: Kishore Kadiyala <kishore.kadiyala@ti.com> +Date: Wed, 17 Feb 2010 19:34:47 +0530 +Subject: [PATCH 30/32] 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 <kishore.kadiyala@ti.com> +--- + 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 4b23225..e7323c6 100644 +--- a/drivers/mmc/host/omap_hsmmc.c ++++ b/drivers/mmc/host/omap_hsmmc.c +@@ -1737,7 +1737,7 @@ 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 + |