[PATCH v2 3/5] rockchip: rockpro64: Use SDMA to boost eMMC performance

[Jonas Karlman]

Enable the use of SDMA mode to boost eMMC performance on RockPro64.
Also add missing flags to indicate the supported MMC modes.

Using mmc read command to read 32 MiB data shows following improvement:

  => time mmc read 10000000 2000 10000

Before: time: 3.178 seconds
After: time: 0.402 seconds

This also enables CONFIG_SPL_FIT_SIGNATURE option to help discover
any possible future issue with loading TF-A into DRAM/SRAM.

Signed-off-by: Jonas Karlman <jonas at kwiboo.se>
Reviewed-by: Kever Yang <kever.yang at rock-chips.com>
---
v2:
- Collect r-b tag

 arch/arm/dts/rk3399-rockpro64-u-boot.dtsi | 5 +++++
 configs/rockpro64-rk3399_defconfig        | 2 ++
 2 files changed, 7 insertions(+)

diff --git a/arch/arm/dts/rk3399-rockpro64-u-boot.dtsi b/arch/arm/dts/rk3399-rockpro64-u-boot.dtsi
index 32a83b2855ac..bd864d067018 100644
--- a/arch/arm/dts/rk3399-rockpro64-u-boot.dtsi
+++ b/arch/arm/dts/rk3399-rockpro64-u-boot.dtsi
@@ -15,6 +15,11 @@
 	};
 };
 
+&sdhci {
+	cap-mmc-highspeed;
+	mmc-ddr-1_8v;
+};
+
 &spi1 {
 	spi_flash: flash at 0 {
 		bootph-all;
diff --git a/configs/rockpro64-rk3399_defconfig b/configs/rockpro64-rk3399_defconfig
index 2b89b1baba51..0ca2cecade25 100644
--- a/configs/rockpro64-rk3399_defconfig
+++ b/configs/rockpro64-rk3399_defconfig
@@ -20,6 +20,7 @@ CONFIG_SPL_SPI=y
 CONFIG_SYS_LOAD_ADDR=0x800800
 CONFIG_PCI=y
 CONFIG_DEBUG_UART=y
+CONFIG_SPL_FIT_SIGNATURE=y
 CONFIG_BOOTSTAGE=y
 CONFIG_BOOTSTAGE_REPORT=y
 CONFIG_USE_PREBOOT=y
@@ -63,6 +64,7 @@ CONFIG_ROCKCHIP_EFUSE=y
 CONFIG_MMC_DW=y
 CONFIG_MMC_DW_ROCKCHIP=y
 CONFIG_MMC_SDHCI=y
+CONFIG_MMC_SDHCI_SDMA=y
 CONFIG_MMC_SDHCI_ROCKCHIP=y
 CONFIG_SF_DEFAULT_BUS=1
 CONFIG_SPI_FLASH_GIGADEVICE=y
-- 
2.40.1