On Tue, 28 Feb 2006, Nori, Soma Sekhar wrote: > > During my try, after changing the PLL Freq, the board is stops > > running. I feel, it is due to change in SDRAM Refresh rate. Is it > > right ?? Any body tried this, Kindly share exprience with me. Like > > how to reprogram the peripherals with-out affecting the operation > > etc.. > > Changing the PLL feeding only to the MIPS should not freeze the > board. You are likely messing with PLL which feeds the peripherals > as well. No. PLL-A (Low Freq) is feeding to peripherals and PLL-B(High Feeq) is feeding the MIPS. To save power, I switch from PLL-B to PLL-A during run-time. After wirte in to PLL-Reg the MIPS Hangs. No reboot. > Changing the PLL which feeds the SDRAM will also likely cause memory > corruption. Try putting the SDRAM in self-refresh for the duration > of PLL stablization and then re-program the SDRAM refresh rate. I didn't tried this Self-Refresh trick, Let me try ... Kindly CC to me. Thanks :) -- Bharathi S
