On Tue, 12 Jul 2011, Pavel Machek wrote: > On Wed 2011-06-29 18:40:23, [email protected] wrote: > > From: Jean Pihet <[email protected]> > > > > Most of the ASM sleep code (in arch/arm/mach-omap2/sleep34xx.S) > > is copied to internal SRAM at boot and after wake-up from CORE OFF mode. > > However only a small part of the code really needs to run from internal > > SRAM. > > > > This fix lets most of the ASM idle code run from the DDR > > in order to minimize the SRAM usage and the overhead in the code copy. > > So... what do you plan to use sram for? Because I don't think the > speedup is worth the complexity...
The SDRAM may not be accessible yet when the chip isn't waking up from off-mode, so SRAM is the only option. The comments & code in the patch surrounding the "wait_sdrc_ok" label refer to this issue - albeit, perhaps telegraphically. - Paul -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
