Hi, Sorry to step in the discussion, but are there any updates on this? Where can one track the progress on this issue?
Best, Nicolas Le mercredi 8 août 2018 10:00:00 UTC, Chen-Yu Tsai a écrit : > > Hi, > > On Sun, Jun 10, 2018 at 1:46 AM, Markus Mitsch > <[email protected] <javascript:>> wrote: > > hi. > > > > i posted my answer wrong so here is my finding: > > i made the output work by disabling the sigma delta modulation. > > after compiling the kernel i can output through spdif with any rate. > > So it seems that the default mid-level bias current setting for PLL2 > interferes with sigma-delta modulation. Similarly, the VCO bias setting > also interferes. > > Try zeroing out bits 16 ~ 25 in the PLL2 tuning register (0x01c2000c) > with sigma delta on, and see if that fixes things. > > I'll send out a patch later. > > ChenYu > > > greetings > > markus > > > > 2018-05-26 18:38 GMT+02:00 Markus Mitsch <[email protected] > <javascript:>>: > >> 2018-05-26 16:57 GMT+02:00 Markus Mitsch <[email protected] > <javascript:>>: > >>> 2018-05-23 17:12 GMT+02:00 Code Kipper <[email protected] > <javascript:>>: > >>>> Hi All, > >>>> I can see that the problem was introduced somewhere here > >>>> > >>>> DOESN'T WORK > >>>> ffc3eb6f3a83 Merge tag 'sunxi-clk-for-4.15' of > >>>> https://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux into > >>>> clk-next > >>>> ae74ac082886 Merge tag 'clk-v4.15-exynos-pm' of > >>>> git://git.kernel.org/pub/scm/linux/kernel/git/snawrocki/clk into > >>>> clk-next > >>>> faa865f18cb7 Merge tag 'clk-v4.15-samsung' of > >>>> git://git.kernel.org/pub/scm/linux/kernel/git/snawrocki/clk into > >>>> clk-next > >>>> f09a6b86fdae Merge tag 'clk-renesas-for-v4.15-tag1' of > >>>> git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-drivers > >>>> into clk-next > >>>> 4328a2186e51 clk: sunxi-ng: sun4i: Export video PLLs > >>>> 553c7d5ba2fe clk: sunxi-ng: Add A83T display clocks > >>>> 7679eb20353d clk: samsung: Add a separate driver for Exynos4412 ISP > clocks > >>>> 8ca8ac102484 clk: samsung: Add dt bindings for Exynos4412 ISP clock > controller > >>>> 75920aac275a clk: samsung: Instantiate Exynos4412 ISP clocks only > when available > >>>> 24ea78a09f89 clk: sunxi-ng: sun8i: a23: Use sigma-delta modulation > for audio PLL > >>>> ee6501d69217 clk: sunxi-ng: sun6i: Use sigma-delta modulation for > audio PLL > >>>> 042f7f8f9715 clk: sunxi-ng: sun5i: Use sigma-delta modulation for > audio PLL > >>>> de3448519194 clk: sunxi-ng: sun4i: Use sigma-delta modulation for > audio PLL > >>>> a5e3e2b2ef85 clk: sunxi-ng: sun8i: h3: Use sigma-delta modulation for > audio PLL > >>>> 392ba5fafcdf clk: sunxi-ng: nm: Add support for sigma-delta > modulation > >>>> 05d2eaac96d4 clk: sunxi-ng: Add sigma-delta modulation support > >>>> 4cdbc40d64d4 clk: sunxi-ng: nm: Check if requested rate is supported > >>>> by fractional clock > >>>> d51fe3ba9773 clk: sunxi-ng: sun5i: Fix bit offset of audio PLL > post-divider > >>>> 4e8975cbb516 clk: samsung: exynos5433: mark PM functions as > __maybe_unused > >>>> a4f21e9ceb5c clk: samsung: Remove obsolete clkdev alias support > >>>> 45d882daf88a clk: samsung: Add explicit MPLL, EPLL clkdev aliases in > >>>> S3C2443 driver > >>>> cd05417f728b clk: samsung: Rework clkdev alias handling in S3C2443 > driver > >>>> efea8d377184 clk: samsung: Rework clkdev alias handling in Exynos5440 > driver > >>>> 36ba48240b19 clk: samsung: Drop useless alias in Exynos5420 clk > driver > >>>> 29964890f31c clk: samsung: Remove clkdev alias support in Exynos5250 > clk driver > >>>> 6de08891c896 clk: samsung: Remove double assignment of CLK_ARM_CLK in > >>>> Exynos4 driver > >>>> 58f4a5ff3a62 clk: samsung: Remove clkdev alias support in Exynos4 clk > driver > >>>> c9194fb623b0 clk: samsung: Remove support for obsolete Exynos4212 CPU > clock > >>>> d5cd103b06f9 clk: samsung: Remove support for Exynos4212 SoCs in > >>>> Exynos CLKOUT driver > >>>> 7c4f63ec94a1 clk: sunxi-ng: a83t: Fix invalid csi-mclk mux offset > >>>> WORKS > >>>> 0a4e632b6f9d Merge branch 'clk-fixes' into clk-next > >>>> > >>>> BR, > >>>> CK > >>>> > >>>> > >>>> On 22 May 2018 at 21:27, Code Kipper <[email protected] > <javascript:>> wrote: > >>>>> Hi Markus, > >>>>> I've been able to reproduce this on my A31 board with > linux-next(plays > >>>>> at 44100 but not at 96K)so it is an issue. I also tested the same > code > >>>>> on my A64 and it worked fine, The blocks are very similar so it > maybe > >>>>> a clocking issue, I'll look into this. > >>>>> BR, > >>>>> CK > >>>>> > >>>>> On 21 May 2018 at 20:17, Markus Mitsch <[email protected] > <javascript:>> wrote: > >>>>>> 2018-05-21 15:17 GMT+02:00 Maxime Ripard <[email protected] > <javascript:>>: > >>>>>>> On Mon, May 21, 2018 at 02:43:55PM +0200, Markus Mitsch wrote: > >>>>>>>> 2018-05-21 11:43 GMT+02:00 Markus Mitsch < > [email protected] <javascript:>>: > >>>>>>>> >>> Hello, > >>>>>>>> >>> > >>>>>>>> >>> i have a new problem. if i want to output sound from optical > i get > >>>>>>>> >>> distorted sound. At 44.1 khz its like an old vinly, but at 48 > khz and > >>>>>>>> >>> higher it is very bad. thanks in advance for your time. > >>>>>>>> > > >>>>>>>> >> Hi Markus, > >>>>>>>> >> I haven't tested it for a while but when I did it worked as > high as > >>>>>>>> >> 96K with no issues. Does it work ok with the original > cubietruck > >>>>>>>> >> software?, > >>>>>>>> >> CK > >>>>>>>> > > >>>>>>>> > Hello, > >>>>>>>> > i am using arch linux with mainline kernel 4.16.8. parhaps i > can try > >>>>>>>> > today with official image. > >>>>>>>> > mfg > >>>>>>>> > >>>>>>>> Hi. > >>>>>>>> So, with debian image from 2014 with 3.4.79 kernel the sound is > clear > >>>>>>>> up to 96 khz. > >>>>>>> > >>>>>>> You said that it is a new problem, when was it introduced? Could > you > >>>>>>> bisect the issue? > >>>>>>> > >>>>>>> Maxime > >>>>>> > >>>>>> Hello. > >>>>>> I dont know since when this problem appears. When saying "new" i > >>>>>> refered to my older post. I tried to look into the dts file and the > >>>>>> code > >>>>>> but i am afraid this is a bit too high for me. I can say that the > >>>>>> analog output works, even at high sampling rates. > >>>>>> And I have read something about a clock source could be the > problem. > >>>>>> I'm sorry I can't tell you any more. > >>>>>> > >>>>>> mfg > >>>>>> Markus > >>> > >>> Hello, > >>> i tried undoing part of the commit > >>> de3448519194 clk: sunxi-ng: sun4i: Use sigma-delta modulation for > audio PLL > >>> by setting the value for the divider from 1 to 4 again on both places. > >>> with no success. > >>> > >>> markus > >> > >> i now had a little success. the output works!! > >> i disabled the sigma-delta support by making > >> ccu_sdm_helper_enable in drivers/clk/sunxi-ng/ccu_sdm.c return > imediately. > >> > >> markus > -- You received this message because you are subscribed to the Google Groups "linux-sunxi" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
