From adc0fabfd9662fa690e866332cd4277351f991c4 Mon Sep 17 00:00:00 2001 From: Peng Fan Date: Thu, 8 Jan 2015 10:40:21 +0800 Subject: [PATCH] imx:mx6sxsabresd support qspi AHB read Add CONFIG_SYS_FSL_QSPI_AHB in header file to enable AHB in driver. In order to count the time, add CONFIG_CMD_TIME. Using AHB read can improve the the read speed about 30%. AHB read: => time sf read 0x8f800000 0 100000 SF: 1048576 bytes @ 0x0 Read: OK time: 0.174 seconds => time sf read 0x8f800000 1000000 100000 SF: 1048576 bytes @ 0x1000000 Read: OK time: 0.174 seconds IP read: => time sf read 0x8f800000 0 100000 SF: 1048576 bytes @ 0x0 Read: OK time: 0.227 seconds => time sf read 0x8f800000 1000000 100000 SF: 1048576 bytes @ 0x1000000 Read: OK time: 0.227 seconds Note: Quad read is not supported in driver, now. In my side, using AHB and Quad read can achieve about 16MB/s. Anyway, I have plan to reimplement the driver using DTB and DM, then make the code cleaner and more feature can be added. Signed-off-by: Peng Fan Reviewed-by: Jagannadha Sutradharudu Teki --- include/configs/mx6sxsabresd.h | 3 +++ 1 file changed, 3 insertions(+) diff --git a/include/configs/mx6sxsabresd.h b/include/configs/mx6sxsabresd.h index b40dc19134..fbaae3f505 100644 --- a/include/configs/mx6sxsabresd.h +++ b/include/configs/mx6sxsabresd.h @@ -235,6 +235,8 @@ /* FLASH and environment organization */ #define CONFIG_SYS_NO_FLASH +#define CONFIG_CMD_TIME + #define CONFIG_FSL_QSPI #ifdef CONFIG_FSL_QSPI @@ -244,6 +246,7 @@ #define CONFIG_SPI_FLASH_SPANSION #define CONFIG_SPI_FLASH_STMICRO #define CONFIG_SYS_FSL_QSPI_LE +#define CONFIG_SYS_FSL_QSPI_AHB #ifdef CONFIG_MX6SX_SABRESD_REVA #define FSL_QSPI_FLASH_SIZE SZ_16M #else -- 2.30.2