Hi, On Sun, Jun 10, 2018 at 1:46 AM, Markus Mitsch <markusmitsch86@xxxxxxxxxxxxxx> 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 <markusmitsch86@xxxxxxxxxxxxxx>: >> 2018-05-26 16:57 GMT+02:00 Markus Mitsch <markusmitsch86@xxxxxxxxxxxxxx>: >>> 2018-05-23 17:12 GMT+02:00 Code Kipper <codekipper@xxxxxxxxx>: >>>> 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 <codekipper@xxxxxxxxx> 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 <markusmitsch86@xxxxxxxxxxxxxx> wrote: >>>>>> 2018-05-21 15:17 GMT+02:00 Maxime Ripard <maxime.ripard@xxxxxxxxxxx>: >>>>>>> On Mon, May 21, 2018 at 02:43:55PM +0200, Markus Mitsch wrote: >>>>>>>> 2018-05-21 11:43 GMT+02:00 Markus Mitsch <markusmitsch86@xxxxxxxxxxxxxx>: >>>>>>>> >>> 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 _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
