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rockchip: mmc: get the fifo mode and fifo depth property from dts

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rk3036 mmc do not have internal dma, so we use fifo mode when read
and write data, we get the fifo mode and fifo depth property from
dts, pass to dw_mmc driver.

Signed-off-by: Lin Huang <hl@rock-chips.com>
This commit is contained in:
huang lin 2015-11-17 14:20:24 +08:00 committed by Simon Glass
parent ace2198b7c
commit 2863724831
2 changed files with 18 additions and 4 deletions
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1
arch/arm/dts/rk3036.dtsi
View file

@ -257,6 +257,7 @@
cap-mmc-highspeed;
mmc-ddr-1_8v;
disable-wp;
fifo-mode;
non-removable;
num-slots = <1>;
default-sample-phase = <158>;

19
drivers/mmc/rockchip_dw_mmc.c
View file

@ -64,6 +64,7 @@ static int rockchip_dwmmc_probe(struct udevice *dev)
struct dwmci_host *host = &priv->host;
u32 minmax[2];
int ret;
int fifo_depth;
priv->grf = syscon_get_first_range(ROCKCHIP_SYSCON_GRF);
if (IS_ERR(priv->grf))
@ -72,9 +73,21 @@ static int rockchip_dwmmc_probe(struct udevice *dev)
if (ret)
return ret;
ret = fdtdec_get_int_array(gd->fdt_blob, dev->of_offset,
"clock-freq-min-max", minmax, 2);
if (!ret)
if (fdtdec_get_int_array(gd->fdt_blob, dev->of_offset,
"clock-freq-min-max", minmax, 2))
return -EINVAL;
fifo_depth = fdtdec_get_int(gd->fdt_blob, dev->of_offset,
"fifo-depth", 0);
if (fifo_depth < 0)
return -EINVAL;
host->fifoth_val = MSIZE(0x2) |
RX_WMARK(fifo_depth / 2 - 1) | TX_WMARK(fifo_depth / 2);
if (fdtdec_get_bool(gd->fdt_blob, dev->of_offset, "fifo-mode"))
host->fifo_mode = true;
ret = add_dwmci(host, minmax[1], minmax[0]);
if (ret)
return ret;