ARM: uniphier: enable CONFIG_MMC_SDHCI_SDMA for ARMv8 SoCs
I did not enable SDMA when I added sdhci-cadence support because LD20
boards are equipped with a large amount memory beyond 32 bit address
range, but SDMA does not support the 64bit address. U-Boot relocates
itself to the end of effectively available RAM. This would make the
MMC enumeration fail because the buffer for EXT_CSD allocated in the
stack would go too high, then SDMA would fail to transfer data.
Recent SDHCI-compatible controllers support ADMA, but unfortunately
U-Boot does not support ADMA.
In the previous commit, I hided the DRAM area that exceeds the 32 bit
address range. Now, I can enable CONFIG_MMC_SDHCI_SDMA.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
diff --git a/configs/uniphier_v8_defconfig b/configs/uniphier_v8_defconfig
index bbcf3b0..2edc3a9 100644
--- a/configs/uniphier_v8_defconfig
+++ b/configs/uniphier_v8_defconfig
@@ -34,6 +34,7 @@
CONFIG_MMC_UNIPHIER=y
CONFIG_MMC_SDHCI=y
CONFIG_MMC_SDHCI_CADENCE=y
+CONFIG_MMC_SDHCI_SDMA=y
CONFIG_NAND=y
CONFIG_NAND_DENALI_DT=y
CONFIG_NAND_DENALI_SPARE_AREA_SKIP_BYTES=8