[alsa-devel] [BUG] On Allwinner A20 Board Cubietruck distorted SPDIF opical output
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.
mfg
On 20 May 2018 at 14:23, 'Markus Mitsch' via linux-sunxi linux-sunxi@googlegroups.com wrote:
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
mfg
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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
2018-05-21 11:43 GMT+02:00 Markus Mitsch markusmitsch86@googlemail.com:
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. mfg
On Mon, May 21, 2018 at 02:43:55PM +0200, Markus Mitsch wrote:
2018-05-21 11:43 GMT+02:00 Markus Mitsch markusmitsch86@googlemail.com:
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
2018-05-21 15:17 GMT+02:00 Maxime Ripard maxime.ripard@bootlin.com:
On Mon, May 21, 2018 at 02:43:55PM +0200, Markus Mitsch wrote:
2018-05-21 11:43 GMT+02:00 Markus Mitsch markusmitsch86@googlemail.com:
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
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@googlemail.com wrote:
2018-05-21 15:17 GMT+02:00 Maxime Ripard maxime.ripard@bootlin.com:
On Mon, May 21, 2018 at 02:43:55PM +0200, Markus Mitsch wrote:
2018-05-21 11:43 GMT+02:00 Markus Mitsch markusmitsch86@googlemail.com:
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
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@gmail.com 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@googlemail.com wrote:
2018-05-21 15:17 GMT+02:00 Maxime Ripard maxime.ripard@bootlin.com:
On Mon, May 21, 2018 at 02:43:55PM +0200, Markus Mitsch wrote:
2018-05-21 11:43 GMT+02:00 Markus Mitsch markusmitsch86@googlemail.com:
> 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
participants (3)
-
Code Kipper -
Markus Mitsch -
Maxime Ripard