On Wednesday 04 of February 2009 13:47:41 Ganeshan N wrote: > Hi All, > I am using OMAP3EVM and measuring DDR memory bandwidth. Used "lmbench" to > measure the bandwidth. I am getting low bandwidth around 460 MB/S in TI > kernel 2.6.22 and getting bandwidth around 800 MB/S in git kernel > 2.6.28-rc8. > > In kernel 2.6.22, there are two SDRC registers (SDRC_DLLA_CTRL and > SDRC_POWER_REG), which are getting modified. I have updated code such that > SDRC values for both the the kernel 2.6.22 and 2.6.28 are same. After this > updation there is no improvement in the bandwidth. The SDRC is running at > 166MHz. I am using same x-loader and u-boot for both the kernel (2.6.22 > and 2.6.28). > > Can you please suggest some pointers/methods, to increase the DDR memroy > bandwidth in 2.6.22 TI kernel. > > Thanks in advance. why don't you use the .28 one then ? .22 is way too deprecated. > > With Regards > Ganeshan > > > > > > -- > To unsubscribe from this list: send the line "unsubscribe linux-omap" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
