Messages in this thread | | | Date | Tue, 27 May 2014 10:32:01 +0200 | From | Maxime Ripard <> | Subject | Re: [PATCH 03/22] clk: sunxi: add "pll6" to sun6i protected clock list |
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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@free-electrons.com> 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 [unhandled content-type:application/pgp-signature] | |