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mmc: tmio: Limit DMA to 32bit on R-Car Gen3

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The internal DMAC on Gen3 is 32bit only, limit the DMA address
range to 32bit.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
This commit is contained in:
Marek Vasut 2018-10-03 00:46:24 +02:00 committed by Marek Vasut
parent 92bde154ec
commit beced53a74
1 changed files with 6 additions and 0 deletions
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6
drivers/mmc/tmio-common.c
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@ -379,6 +379,12 @@ static bool tmio_sd_addr_is_dmaable(const char *src)
if (!IS_ALIGNED(addr, TMIO_SD_DMA_MINALIGN))
return false;
#if defined(CONFIG_RCAR_GEN3)
/* Gen3 DMA has 32bit limit */
if (addr >> 32)
return false;
#endif
#if defined(CONFIG_ARCH_UNIPHIER) && !defined(CONFIG_ARM64) && \
defined(CONFIG_SPL_BUILD)
/*