From: Marek Vasut <marek.vasut+renesas@gmail.com>
Date: Tue, 2 Oct 2018 22:46:24 +0000 (+0200)
Subject: mmc: tmio: Limit DMA to 32bit on R-Car Gen3
X-Git-Tag: v2018.11-rc2~8^2~1
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=beced53a74a32087651150b0c2a8a95eaddd53c2;p=oweals%2Fu-boot.git

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 6b21941991..138de59470 100644
--- 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)
 	/*