We can calculate this. Add code to do this if it is not provided.
Signed-off-by: Simon Glass sjg@chromium.org ---
Changes in v4: None
drivers/mmc/dw_mmc.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-)
diff --git a/drivers/mmc/dw_mmc.c b/drivers/mmc/dw_mmc.c index a034c3f..cce2a5d 100644 --- a/drivers/mmc/dw_mmc.c +++ b/drivers/mmc/dw_mmc.c @@ -355,9 +355,15 @@ 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);