| Message ID | 1420684821-23988-3-git-send-email-Peng.Fan@freescale.com |
|---|---|
| State | Accepted |
| Delegated to: | Jagannadha Sutradharudu Teki |
| Headers | show |
On 8 January 2015 at 08:10, Peng Fan <Peng.Fan@freescale.com> wrote: > 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> > --- > include/configs/mx6sxsabresd.h | 3 +++ > 1 file changed, 3 insertions(+) > > 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 > -- > 1.8.4 > > Applied to u-boot-spi/master thanks!
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
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> --- include/configs/mx6sxsabresd.h | 3 +++ 1 file changed, 3 insertions(+)