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mmc: rk_sdmmc: edmac limit FIFOTH when mburst exceed limitation

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Signed-off-by: lintao <lintao@rock-chips.com>
This commit is contained in:
lintao 2015-03-03 21:31:10 +08:00
parent fc81f4bf58
commit 9420778cf0
1 changed files with 7 additions and 1 deletions
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8
drivers/mmc/host/rk_sdmmc.c
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@ -637,7 +637,13 @@ static void dw_mci_edmac_start_dma(struct dw_mci *host, unsigned int sg_len)
else
burst_limit = 16;
slave_config.dst_maxburst = (mburst > burst_limit) ? burst_limit : mburst;
if (mburst > burst_limit) {
mburst = burst_limit;
fifoth_val = SDMMC_SET_FIFOTH(mszs[3], mszs[3] - 1, (host->fifo_depth) / 2);
mci_writel(host, FIFOTH, fifoth_val);
}
slave_config.dst_maxburst = mburst;
slave_config.src_maxburst = slave_config.dst_maxburst;
if(host->data->flags & MMC_DATA_WRITE){