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| author | Simon Glass <sjg@chromium.org> | 2015-08-06 20:16:29 -0600 |
|---|---|---|
| committer | Pantelis Antoniou <pantelis.antoniou@konsulko.com> | 2015-08-13 11:24:26 +0300 |
| commit | 760177dff4662d000c7b1331ec93b2ea4fbd564e (patch) | |
| tree | 124364e5bd5d87e82057983afa72023c9d44f1e3 /drivers/mmc | |
| parent | 1c87ffe8d1eef2c759b97129fd48e218a039cbcd (diff) | |
| download | blackbird-obmc-uboot-760177dff4662d000c7b1331ec93b2ea4fbd564e.tar.gz blackbird-obmc-uboot-760177dff4662d000c7b1331ec93b2ea4fbd564e.zip | |
dw_mmc: Calculate dwmmc FIFO threshold size if not provided
We can calculate this. Add code to do this if it is not provided.
panto: prefix changed to dw_mmc to make things easier to grep
Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Jaehoon Chung <jh80.chung@samsung.com>
Diffstat (limited to 'drivers/mmc')
| -rw-r--r-- | drivers/mmc/dw_mmc.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/mmc/dw_mmc.c b/drivers/mmc/dw_mmc.c index d34e4ee9dd..77b87e0365 100644 --- a/drivers/mmc/dw_mmc.c +++ b/drivers/mmc/dw_mmc.c @@ -373,9 +373,15 @@ static int dwmci_init(struct mmc *mmc) dwmci_writel(host, DWMCI_IDINTEN, 0); dwmci_writel(host, DWMCI_BMOD, 1); - if (host->fifoth_val) { - dwmci_writel(host, DWMCI_FIFOTH, host->fifoth_val); + if (!host->fifoth_val) { + uint32_t fifo_size; + + fifo_size = dwmci_readl(host, DWMCI_FIFOTH); + fifo_size = ((fifo_size & RX_WMARK_MASK) >> RX_WMARK_SHIFT) + 1; + host->fifoth_val = MSIZE(0x2) | RX_WMARK(fifo_size / 2 - 1) | + TX_WMARK(fifo_size / 2); } + dwmci_writel(host, DWMCI_FIFOTH, host->fifoth_val); dwmci_writel(host, DWMCI_CLKENA, 0); dwmci_writel(host, DWMCI_CLKSRC, 0); |
