Hi Dave,
On Wed, 5 Oct 2011, Dave Hylands wrote:
> I have an older overo board, which has an OMAP3503
>
> U-booot reports:
> OMAP3503-GP ES2.1, CPU-OPP2, L3-165MHz, Max CPU Clock 600 mHz
>
> In order to get the 2.6.39 kernel to boot, I had to make 2 modifications:
>
> In arch/arm/mach-omap2/pm34xx.c, in the omap_sram_idle routine I had
> to put an #if 0 around:
>
> #if 0
> if (omap3_has_io_wakeup() &&
> (per_next_state < PWRDM_POWER_ON ||
> core_next_state < PWRDM_POWER_ON)) {
> omap2_prm_set_mod_reg_bits(OMAP3430_EN_IO_MASK,
> WKUP_MOD, PM_WKEN);
> omap3_enable_io_chain();
> }
> #endif
>
> or I would get continuous
>
> Wake up daisy chain activation failed.
>
> messages on the console.
Looking at the 2.6.39 kernel sources, those messages are coming from
mach-omap2/pm34xx.c:omap3_enable_io_chain(). That means that something is
seriously wrong since that code should only be executing on ES3.1 chips
and higher.
Could you put something similar to a
pr_err("** omap_rev is %08x\n", omap_rev());
in your pm34xx.c right above the #if 0 that you added and let us know what
it says?
thanks
- Paul
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