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>
master
Lei Wen 13 years ago committed by Andy Fleming
parent a004abde88
commit 3e81c77240
  1. 2
      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);
}

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