Rockchip sdhci controller capable of 8-bit transfer. The original can
only run at 4 bit mode.
Signed-off-by: Ziyuan Xu <xzy...@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) {
--
2.7.4
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