From mboxrd@z Thu Jan 1 00:00:00 1970 From: maxime.ripard@free-electrons.com (Maxime Ripard) Date: Tue, 27 May 2014 10:32:01 +0200 Subject: [PATCH 03/22] clk: sunxi: add "pll6" to sun6i protected clock list In-Reply-To: References: <1400831485-28576-1-git-send-email-wens@csie.org> <1400831485-28576-4-git-send-email-wens@csie.org> <20140525184808.GP10768@lukather> Message-ID: <20140527083201.GF4730@lukather> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org 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 > 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 -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 819 bytes Desc: Digital signature URL: