[PATCH 4/5] rockchip: rock-pi-4: Use SDMA to boost eMMC performance

[Kever Yang]

On 2023/5/7 01:41, Jonas Karlman wrote:
> Enable the use of SDMA mode to boost eMMC performance on ROCK Pi 4.
> 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>

Thanks,
- Kever
> ---
>   arch/arm/dts/rk3399-rock-pi-4-u-boot.dtsi | 6 ++++++
>   configs/rock-pi-4-rk3399_defconfig        | 2 ++
>   2 files changed, 8 insertions(+)
>
> diff --git a/arch/arm/dts/rk3399-rock-pi-4-u-boot.dtsi b/arch/arm/dts/rk3399-rock-pi-4-u-boot.dtsi
> index c17e769f649f..60122f3bcd6c 100644
> --- a/arch/arm/dts/rk3399-rock-pi-4-u-boot.dtsi
> +++ b/arch/arm/dts/rk3399-rock-pi-4-u-boot.dtsi
> @@ -12,6 +12,12 @@
>   	};
>   };
>   
> +&sdhci {
> +	cap-mmc-highspeed;
> +	mmc-ddr-1_8v;
> +	mmc-hs200-1_8v;
> +};
> +
>   &vdd_log {
>   	regulator-init-microvolt = <950000>;
>   };
> diff --git a/configs/rock-pi-4-rk3399_defconfig b/configs/rock-pi-4-rk3399_defconfig
> index 1e96fa706ac4..ee5b4f395a00 100644
> --- a/configs/rock-pi-4-rk3399_defconfig
> +++ b/configs/rock-pi-4-rk3399_defconfig
> @@ -19,6 +19,7 @@ CONFIG_SYS_LOAD_ADDR=0x800800
>   CONFIG_PCI=y
>   CONFIG_DEBUG_UART=y
>   # CONFIG_ANDROID_BOOT_IMAGE is not set
> +CONFIG_SPL_FIT_SIGNATURE=y
>   CONFIG_DEFAULT_FDT_FILE="rockchip/rk3399-rock-pi-4b.dtb"
>   CONFIG_DISPLAY_BOARDINFO_LATE=y
>   CONFIG_MISC_INIT_R=y
> @@ -56,6 +57,7 @@ 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_ETH_DESIGNWARE=y
>   CONFIG_GMAC_ROCKCHIP=y