* Igor Grinberg <grinberg@xxxxxxxxxxxxxx> [121107 23:15]: > On 11/07/12 19:33, Tony Lindgren wrote: > > > > I think this should be the default for the timers as that counter > > does not stop during deeper idle states. > > Well, it is the default as you can see from the patch. > The problem is that for boards that for some reason do not have > the 32k wired and rely on MPU/GP timer source, the default will not work > and currently there is no way for board to specify which timer source > it can use. Yes. I was just wondering if we can avoid patching all the board files by doing it the other way around by introducing a new omap_gp_timer rather than renaming all the existing ones? > We have discussed this in San Diego (remember?) and you actually proposed > this way as a solution. Well, may be I took it a bit further than you > thought, but this is because the board code cannot know which timer source > should be used at runtime and the fall back described below, does not work. Yes thanks I agree we should get rid of that Kconfig option for sure. > >> --- a/arch/arm/mach-omap2/board-2430sdp.c > >> +++ b/arch/arm/mach-omap2/board-2430sdp.c > >> @@ -284,6 +284,6 @@ MACHINE_START(OMAP_2430SDP, "OMAP2430 sdp2430 board") > >> .handle_irq = omap2_intc_handle_irq, > >> .init_machine = omap_2430sdp_init, > >> .init_late = omap2430_init_late, > >> - .timer = &omap2_timer, > >> + .timer = &omap2_sync32k_timer, > >> .restart = omap_prcm_restart, > >> MACHINE_END > >> --- a/arch/arm/mach-omap2/board-3430sdp.c > >> +++ b/arch/arm/mach-omap2/board-3430sdp.c > >> @@ -596,6 +596,6 @@ MACHINE_START(OMAP_3430SDP, "OMAP3430 3430SDP board") > >> .handle_irq = omap3_intc_handle_irq, > >> .init_machine = omap_3430sdp_init, > >> .init_late = omap3430_init_late, > >> - .timer = &omap3_timer, > >> + .timer = &omap3_sync32k_timer, > >> .restart = omap_prcm_restart, > >> MACHINE_END > > ... > > > > Can't we assume that the default timer is omap[234]_sync32k_timer to > > avoid renaming the timer entries in all the board files? > > Hmmm... > How will this work with the macros defining the sys_timer structure? > I would also not want to hide the exact timer used under the default name. Can't you just add a new sys_timer (or a new macro) for GP only setups? > > Then we just need a new timer entries for the hardware that does > > not have the sycn32k_timer available? > > Well, I tried to make it small patch just for the hardware that needs it, > but I always found some corner case where, IMHO, this does not work/look good. Can you explain a bit further? I guess what I'm after is just to avoid renaming the existing timers in the board-*.c files and only rename the ones that need gp timer only. Regards, Tony -- 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
