If DMA(SDMA or ADMA) is not used, the cache invalidation after reading is no need, should be skipped. Otherwise U-Boot may hang at the cache invalidation.
Found this issue and tested this fix on DragonBoard 410c.
Fixes: commit 4155ad9aac94 ("mmc: sdhci: fix missing cache invalidation after reading by DMA")
Signed-off-by: Yuezhang.Mo Yuezhang.Mo@sony.com --- drivers/mmc/sdhci.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/mmc/sdhci.c b/drivers/mmc/sdhci.c index 0628934312..29099199a7 100644 --- a/drivers/mmc/sdhci.c +++ b/drivers/mmc/sdhci.c @@ -174,8 +174,10 @@ static int sdhci_transfer_data(struct sdhci_host *host, struct mmc_data *data) } } while (!(stat & SDHCI_INT_DATA_END));
+#if (defined(CONFIG_MMC_SDHCI_SDMA) || CONFIG_IS_ENABLED(MMC_SDHCI_ADMA)) dma_unmap_single(host->start_addr, data->blocks * data->blocksize, mmc_get_dma_dir(data)); +#endif
return 0; }