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Groups > linux.kernel > #1502773
| From | Jean-Francois Moine <moinejf@free.fr> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH] clk: sunxi-ng: sun6i-a31: Force AHB1 clock to use PLL6 as parent |
| Date | 2016-10-18 10:00 +0200 |
| Message-ID | <stxtw-7at-7@gated-at.bofh.it> (permalink) |
| References | <stvrH-5XY-5@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On Tue, 18 Oct 2016 13:42:09 +0800 Chen-Yu Tsai <wens@csie.org> wrote: > On the A31, the DMA engine only works if AHB1 is clocked from PLL6. > In addition, the hstimer is clocked from AHB1, and if AHB1 is clocked > from the CPU clock, and cpufreq is working, we get an unstable timer. > > Force the AHB1 clock to use PLL6 as its parent. Previously this was done > in the device tree with the assigned-clocks and assigned-clocks-parent > bindings. However with this new monolithic driver, the system critical > clocks aren't exported through the device tree. The alternative is to > force this setting in the driver before the clocks are registered. It should be simpler to export the constant (CLK_AHB1) instead of adding code... -- Ken ar c'hentañ | ** Breizh ha Linux atav! ** Jef | http://moinejf.free.fr/
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[PATCH] clk: sunxi-ng: sun6i-a31: Force AHB1 clock to use PLL6 as parent Chen-Yu Tsai <wens@csie.org> - 2016-10-18 07:50 +0200 Re: [PATCH] clk: sunxi-ng: sun6i-a31: Force AHB1 clock to use PLL6 as parent Chen-Yu Tsai <wens@csie.org> - 2016-10-18 10:00 +0200 Re: [PATCH] clk: sunxi-ng: sun6i-a31: Force AHB1 clock to use PLL6 as parent Jean-Francois Moine <moinejf@free.fr> - 2016-10-18 10:00 +0200 Re: [PATCH] clk: sunxi-ng: sun6i-a31: Force AHB1 clock to use PLL6 as parent Maxime Ripard <maxime.ripard@free-electrons.com> - 2016-10-19 16:50 +0200
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