[PATCH] lmb: enable LMB_LIMIT_DMA_BELOW_RAM_TOP for ARCH_IMX8M

[Andreas Henriksson]

On boards with >3GiB ram, we can end up with transfers above 4GiB
which is not allowed by SDHC driver.

fsl_esdhc_imx.c: esdhc_setup_dma():
        if (upper_32_bits(priv->dma_addr))
                printf("Cannot use 64 bit addresses with SDMA\n");

Tested on Toradex Verdin i.MX8M Plus SoM, where bootefi would not work
(with systemd-boot as efi application) and print the above message.

Signed-off-by: Andreas Henriksson <andr...@fatal.se>
---
 lib/Kconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/Kconfig b/lib/Kconfig
index 021a82d4709..a5f2e3e1058 100644
--- a/lib/Kconfig
+++ b/lib/Kconfig
@@ -1371,7 +1371,7 @@ config SPL_LMB_ARCH_MEM_MAP
 config LMB_LIMIT_DMA_BELOW_RAM_TOP
        bool
        depends on LMB
-       default y if ARCH_BCM283X || ARCH_MVEBU || ARCH_ROCKCHIP || 
STARFIVE_JH7110
+       default y if ARCH_BCM283X || ARCH_IMX8M || ARCH_MVEBU || ARCH_ROCKCHIP 
|| STARFIVE_JH7110
        help
          Some architectures can not DMA above ram_top boundary,
          which is after 4 GiB or 32-bit boundary too. Limit the
-- 
2.47.3