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

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>

diff --git a/drivers/mmc/tmio-common.c b/drivers/mmc/tmio-common.c
index 6b21941..138de59 100644 (file)
--- a/drivers/mmc/tmio-common.c
+++ b/drivers/mmc/tmio-common.c
@@ -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)
        /*