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| author | Peng Fan <Peng.Fan@freescale.com> | 2015-01-08 10:40:21 +0800 |
|---|---|---|
| committer | Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com> | 2015-01-09 00:03:28 +0530 |
| commit | adc0fabfd9662fa690e866332cd4277351f991c4 (patch) | |
| tree | 49d04ff8144a0854fb916673269130822304eb18 /include/configs | |
| parent | 5f7f70c1718b74df12724724f6ec72fa1894d49c (diff) | |
| download | u-boot-imx-adc0fabfd9662fa690e866332cd4277351f991c4.zip u-boot-imx-adc0fabfd9662fa690e866332cd4277351f991c4.tar.gz u-boot-imx-adc0fabfd9662fa690e866332cd4277351f991c4.tar.bz2 | |
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 <Peng.Fan@freescale.com>
Reviewed-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
Diffstat (limited to 'include/configs')
| -rw-r--r-- | include/configs/mx6sxsabresd.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/configs/mx6sxsabresd.h b/include/configs/mx6sxsabresd.h index b40dc19..fbaae3f 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 |