On Mon, May 26, 2014 at 12:47:30PM +0800, Chen-Yu Tsai wrote: > On Mon, May 26, 2014 at 2:48 AM, Maxime Ripard > <maxime.ripard@xxxxxxxxxxxxxxxxxx> wrote: > > On Fri, May 23, 2014 at 03:51:06PM +0800, Chen-Yu Tsai wrote: > >> PLL6 is used by some important but undocumented module, most likely > >> memory related, such as mbus or the actual memory controller. As we > >> do not have a driver for that, add pll6 to the list of protected > >> clocks, so that it won't be disabled and leave us with a non-responsive > >> system. > > > > What issue have you seen? > > Completely unresponsive after PLL6 is gated (on the A23). > > > The system actually works pretty great on the A31. > > Does it work when there aren't any other PLL6 consumers? Yes. > Maybe the boot0 on A31 and A23 setup some DRAM-related modules differently. > > If the A31 works without protecting PLL6, I'll add a separate list > for the A23. Thanks! Maxime -- Maxime Ripard, Free Electrons Embedded Linux, Kernel and Android engineering http://free-electrons.com
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