From patchwork Wed Dec 5 13:31:34 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: [U-Boot,1/4] MMC: DWMMC: Modified fifo size computation Date: Wed, 05 Dec 2012 03:31:34 -0000 From: Amar X-Patchwork-Id: 203869 Message-Id: <1354714297-11568-2-git-send-email-amarendra.xt@samsung.com> To: u-boot@lists.denx.de, jh80.chung@samsung.com Cc: afleming@gmail.com, patches@linaro.org The current implementation of fifo size computation was giving improper values for eMMC channel. Modified the computation as per user manual. Signed-off-by: Amarendra Reddy Acked-by: Jaehoon Chung --- drivers/mmc/dw_mmc.c | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-) diff --git a/drivers/mmc/dw_mmc.c b/drivers/mmc/dw_mmc.c index 4070d4e..62dc152 100644 --- a/drivers/mmc/dw_mmc.c +++ b/drivers/mmc/dw_mmc.c @@ -332,6 +332,8 @@ static int dwmci_init(struct mmc *mmc) dwmci_writel(host, DWMCI_BMOD, 1); fifo_size = dwmci_readl(host, DWMCI_FIFOTH); + fifo_size = ((fifo_size & RX_WMARK(0xFFF)) >> 16) + 1; + if (host->fifoth_val) fifoth_val = host->fifoth_val; else