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mmc: sdhci: fix sdma bug for large file transfer

SDHCI spec need to reset the sdma base address while the software
try to accorss the 512k bytes address boundary. When meet such
accross behavior, sdhci controller would generate a interrupt
automatically, and software need handle this.

Signed-off-by: Lei Wen <leiwen@marvell.com>
Lei Wen 13 năm trước cách đây
mục cha
commit
3e81c77240
1 tập tin đã thay đổi với 1 bổ sung1 xóa
  1. 1 1
      drivers/mmc/sdhci.c

+ 1 - 1
drivers/mmc/sdhci.c

@@ -104,7 +104,7 @@ static int sdhci_transfer_data(struct sdhci_host *host, struct mmc_data *data,
 #ifdef CONFIG_MMC_SDMA
 		if (stat & SDHCI_INT_DMA_END) {
 			sdhci_writel(host, SDHCI_INT_DMA_END, SDHCI_INT_STATUS);
-			start_addr &= SDHCI_DEFAULT_BOUNDARY_SIZE - 1;
+			start_addr &= ~(SDHCI_DEFAULT_BOUNDARY_SIZE - 1);
 			start_addr += SDHCI_DEFAULT_BOUNDARY_SIZE;
 			sdhci_writel(host, start_addr, SDHCI_DMA_ADDRESS);
 		}