Hi Will, On Thu, Feb 24 2011, Jaehoon Chung wrote: > This patch is applied fixed burst. > If use internal DMA controller, i think that need to set this bit. > > I tested when set this bit or not. I found that increase performance with IDMAC > > Signed-off-by: Jaehoon Chung <jh80.chung@xxxxxxxxxxx> > Signed-off-by: Kyungmin Park <kyungmin.park@xxxxxxxxxxx> > --- > drivers/mmc/host/dw_mmc.c | 4 ++-- > 1 files changed, 2 insertions(+), 2 deletions(-) > > diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c > index 58476c1..46e5a89 100644 > --- a/drivers/mmc/host/dw_mmc.c > +++ b/drivers/mmc/host/dw_mmc.c > @@ -315,7 +315,7 @@ static void dw_mci_idmac_stop_dma(struct dw_mci *host) > > /* Stop the IDMAC running */ > temp = mci_readl(host, BMOD); > - temp &= ~SDMMC_IDMAC_ENABLE; > + temp &= ~(SDMMC_IDMAC_ENABLE | SDMMC_IDMAC_FB); > mci_writel(host, BMOD, temp); > } > > @@ -384,7 +384,7 @@ static void dw_mci_idmac_start_dma(struct dw_mci *host, unsigned int sg_len) > > /* Enable the IDMAC */ > temp = mci_readl(host, BMOD); > - temp |= SDMMC_IDMAC_ENABLE; > + temp |= SDMMC_IDMAC_ENABLE | SDMMC_IDMAC_FB; > mci_writel(host, BMOD, temp); > > /* Start it running */ Any thoughts on this patch? Thanks, - Chris. -- Chris Ball <cjb@xxxxxxxxxx> <http://printf.net/> One Laptop Per Child -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
