Rockchip sdhci controller capable of 8-bit transfer. The original can only run at 4 bit mode.
Signed-off-by: Ziyuan Xu xzy.xu@rock-chips.com ---
drivers/mmc/rockchip_sdhci.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+)
diff --git a/drivers/mmc/rockchip_sdhci.c b/drivers/mmc/rockchip_sdhci.c index bdde831..562fb35 100644 --- a/drivers/mmc/rockchip_sdhci.c +++ b/drivers/mmc/rockchip_sdhci.c @@ -47,11 +47,26 @@ static int arasan_sdhci_probe(struct udevice *dev)
host->name = dev->name; host->ioaddr = map_sysmem(dtplat->reg[1], dtplat->reg[3]); + host->host_caps |= MMC_MODE_8BIT; max_frequency = dtplat->max_frequency; ret = clk_get_by_index_platdata(dev, 0, dtplat->clocks, &clk); #else max_frequency = fdtdec_get_int(gd->fdt_blob, dev_of_offset(dev), "max-frequency", 0); + switch (fdtdec_get_int(gd->fdt_blob, dev_of_offset(dev), + "bus-width", 4)) { + case 8: + host->host_caps |= MMC_MODE_8BIT; + break; + case 4: + host->host_caps |= MMC_MODE_4BIT; + break; + case 1: + break; + default: + printf("Invalid "bus-width" value\n"); + return -EINVAL; + } ret = clk_get_by_index(dev, 0, &clk); #endif if (!ret) {