summaryrefslogtreecommitdiff
path: root/drivers
diff options
context:
space:
mode:
authorSimon Glass <sjg@chromium.org>2015-08-06 20:16:29 -0600
committerPantelis Antoniou <pantelis.antoniou@konsulko.com>2015-08-13 11:24:26 +0300
commit760177dff4662d000c7b1331ec93b2ea4fbd564e (patch)
tree124364e5bd5d87e82057983afa72023c9d44f1e3 /drivers
parent1c87ffe8d1eef2c759b97129fd48e218a039cbcd (diff)
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')
-rw-r--r--drivers/mmc/dw_mmc.c10
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);