-While the SPI controller speed is defined by DTS, the maximum slave speed (connected devices) is limited by the pre-defined configuration value CONFIG_SF_DEFAULT_SPEED from 10 MHz to 30Mhz.
-set the Value of SPI flash max frequency for environment to 30Mhz.
This patch increases this maximum SPI slave device speed and SPI flash max frequency for environment to 30MHz .
difference in time of erase and update a region of SPI flash from memory with 10Mhz and 30Mhz frequencey range updation :
=> sf update 0x300000 0x800000 0x400000
with 10 Mhz frequency updation :- 4194304 bytes written, 0 bytes skipped in 36.819s, speed 119837 B/s
with 30Mhz frequency updation :- 4194304 bytes written, 0 bytes skipped in 20.319s, speed 220752 B/s
Signed-off-by: Manoj Sai abbaraju.manojsai@amarulasolutions.com Signed-off-by: Da Xue da.xue@libretech.co Signed-off-by: dsx724 da@lessconfused.com --- configs/roc-pc-rk3399_defconfig | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/configs/roc-pc-rk3399_defconfig b/configs/roc-pc-rk3399_defconfig index 84e72e8b60..7754cb8388 100644 --- a/configs/roc-pc-rk3399_defconfig +++ b/configs/roc-pc-rk3399_defconfig @@ -45,6 +45,7 @@ CONFIG_CMD_TIME=y CONFIG_SPL_OF_CONTROL=y CONFIG_OF_SPL_REMOVE_PROPS="pinctrl-0 pinctrl-names clock-names interrupt-parent assigned-clocks assigned-clock-rates assigned-clock-parents" CONFIG_ENV_IS_IN_SPI_FLASH=y +CONFIG_ENV_SPI_MAX_HZ=30000000 CONFIG_SYS_RELOC_GD_ENV_ADDR=y CONFIG_SPL_DM_SEQ_ALIAS=y CONFIG_ROCKCHIP_GPIO=y @@ -55,6 +56,7 @@ CONFIG_MMC_DW_ROCKCHIP=y CONFIG_MMC_SDHCI=y CONFIG_MMC_SDHCI_ROCKCHIP=y CONFIG_SF_DEFAULT_BUS=1 +CONFIG_SF_DEFAULT_SPEED=30000000 CONFIG_SPI_FLASH_WINBOND=y CONFIG_ETH_DESIGNWARE=y CONFIG_GMAC_ROCKCHIP=y