On 1/11/21 11:29 PM, Jaehoon Chung wrote:
[...]
@@ -324,6 +324,8 @@ static int tmio_sd_dma_xfer(struct udevice *dev, struct
mmc_data *data)
tmp = tmio_sd_readl(priv, TMIO_SD_DMA_MODE);
+ tmp |= priv->idma_bus_width;
+
if (data->flags & MMC_DATA_READ) {
buf = data->dest;
dir = DMA_FROM_DEVICE;
@@ -702,6 +704,7 @@ static void tmio_sd_host_init(struct tmio_sd_priv *priv)
if (priv->caps & TMIO_SD_CAP_DMA_INTERNAL) {
tmp = tmio_sd_readl(priv, TMIO_SD_DMA_MODE);
tmp |= TMIO_SD_DMA_MODE_ADDR_INC;
+ tmp |= priv->idma_bus_width;
tmio_sd_writel(priv, tmp, TMIO_SD_DMA_MODE);
}
}
diff --git a/drivers/mmc/tmio-common.h b/drivers/mmc/tmio-common.h
index 9062300c64..59d5a0e22e 100644
--- a/drivers/mmc/tmio-common.h
+++ b/drivers/mmc/tmio-common.h
@@ -90,6 +90,7 @@
#define TMIO_SD_VOLT_180 (2 << 0)/* 1.8V signal */
#define TMIO_SD_DMA_MODE 0x410
#define TMIO_SD_DMA_MODE_DIR_RD BIT(16) /* 1: from device, 0: to dev */
+#define TMIO_SD_DMA_MODE_BUS_WIDTH (BIT(5) | BIT(4)) /* RCar, 64bit */
Do those bit always set when machine is 64bit? or Can it be changed to other
bus-width?
I don't have any knowledge on tmio side. Just wondering.
On R-Car3 they are always 2'b11 , i.e. 64bit, all other options are
reserved.
