Setting some clocks back to DUMMY fixes spdif output on imx6q wandboard rev B1
Xavi Drudis Ferran
xdrudis at tinet.cat
Tue Aug 30 21:14:14 AEST 2016
El Mon, Aug 29, 2016 at 09:54:28PM +0200, Xavi Drudis Ferran deia:
> El Mon, Aug 29, 2016 at 12:28:21PM -0700, Nicolin Chen deia:
> > Would you
> > please do a little debug using "#define DEBUG 1" and check printk
> > from fsl_spdif_probe_txclk() to see the difference between before
> > and after Shengjiu's commit?
>
> Yes, but I'm compiling the kernel in the wandboard, so it'll take me some time.
>
Now. Sorry for the delay.
I did a mistake and had to do it twice. I added a couple of sanity check messages:
"enter fsl_spdif_probe"
"enter fsl_spdif_probe_txclk"
linux-libre-4.7 without my patch, i.e. clocks defined like this :
arch/arm/boot/dts/imx6qdl.dtsi:
aips-bus at 02000000 { /* AIPS1 */
[...]
spba-bus at 02000000 {
[...]
spdif: spdif at 02004000 {
clocks = <&clks IMX6QDL_CLK_SPDIF_GCLK>, <&clks IMX6QDL_CLK_OSC>,
<&clks IMX6QDL_CLK_SPDIF>, <&clks IMX6QDL_CLK_ASRC>,
<&clks IMX6QDL_CLK_DUMMY>, <&clks IMX6QDL_CLK_ESAI_EXTAL>,
<&clks IMX6QDL_CLK_IPG>, <&clks IMX6QDL_CLK_MLB>,
<&clks IMX6QDL_CLK_DUMMY>, <&clks IMX6QDL_CLK_SPBA>;
clock-names = "core", "rxtx0",
"rxtx1", "rxtx2",
"rxtx3", "rxtx4",
"rxtx5", "rxtx6",
"rxtx7", "spba";
[...]
The messages at boot:
[ 8.803603] 20ec000.sdma: Missing Free firmware (non-Free firmware loading is disabled)
[ 8.813737] imx-sdma 20ec000.sdma: failed to get firmware from device tree
[ 8.870764] imx-sdma 20ec000.sdma: Direct firmware load for /*(DEBLOBBED)*/ failed with error -2
[...]
[ 9.083301] fsl-asrc 2034000.asrc: driver registered
[ 9.087050] sgtl5000 1-000a: sgtl5000 revision 0x11
[ 9.107141] fsl-spdif-dai 2004000.spdif: enter fsl_spdif_probe
[ 9.144839] fsl-spdif-dai 2004000.spdif: enter fsl_spdif_probe_txclk
[ 9.225228] fsl-spdif-dai 2004000.spdif: use rxtx5 as tx clock source for 32000Hz sample rate
[ 9.234058] fsl-spdif-dai 2004000.spdif: use txclk df 16 for 32000Hz sample rate
[ 9.235565] imx-spdif sound-spdif: ASoC: CPU DAI (null) not registered
[ 9.236007] imx-spdif sound-spdif: snd_soc_register_card failed: -517
[...]
[ 9.262713] fsl-spdif-dai 2004000.spdif: use sysclk df 2 for 32000Hz sample rate
[ 9.269349] fsl-spdif-dai 2004000.spdif: the best rate for 32000Hz sample rate is 32226Hz
[ 9.276431] fsl-asoc-card sound: ASoC: CPU DAI (null) not registered
[ 9.276438] fsl-asoc-card sound: snd_soc_register_card failed (-517)
[ 9.289559] fsl-spdif-dai 2004000.spdif: enter fsl_spdif_probe_txclk
[ 9.306991] imx-sgtl5000 sound: ASoC: CPU DAI (null) not registered
[ 9.346253] imx-sgtl5000 sound: snd_soc_register_card failed (-517)
[ 9.376398] fsl-spdif-dai 2004000.spdif: use rxtx6 as tx clock source for 44100Hz sample rate
[ 9.376404] fsl-spdif-dai 2004000.spdif: use txclk df 94 for 44100Hz sample rate
[ 9.376409] fsl-spdif-dai 2004000.spdif: the best rate for 44100Hz sample rate is 43882Hz
[ 9.376415] fsl-spdif-dai 2004000.spdif: enter fsl_spdif_probe_txclk
[ 9.403159] fsl-spdif-dai 2004000.spdif: use rxtx6 as tx clock source for 48000Hz sample rate
[ 9.403165] fsl-spdif-dai 2004000.spdif: use txclk df 86 for 48000Hz sample rate
[ 9.403170] fsl-spdif-dai 2004000.spdif: the best rate for 48000Hz sample rate is 47965Hz
[ 9.403174] fsl-spdif-dai 2004000.spdif: enter fsl_spdif_probe_txclk
[ 9.424007] fsl-spdif-dai 2004000.spdif: use rxtx6 as tx clock source for 96000Hz sample rate
[ 9.424013] fsl-spdif-dai 2004000.spdif: use txclk df 43 for 96000Hz sample rate
[ 9.424021] fsl-spdif-dai 2004000.spdif: the best rate for 96000Hz sample rate is 95930Hz
[ 9.424025] fsl-spdif-dai 2004000.spdif: enter fsl_spdif_probe_txclk
[ 9.450424] fsl-spdif-dai 2004000.spdif: use rxtx6 as tx clock source for 192000Hz sample rate
[ 9.481561] fsl-spdif-dai 2004000.spdif: use txclk df 21 for 192000Hz sample rate
[ 9.488400] fsl-spdif-dai 2004000.spdif: the best rate for 192000Hz sample rate is 196428Hz
[ 9.536785] fsl-ssi-dai 2028000.ssi: No cache defaults, reading back from HW
[ 9.582106] imx-spdif sound-spdif: snd-soc-dummy-dai <-> 2004000.spdif mapping ok
[ 9.612159] fsl-asoc-card sound: ASoC: CPU DAI (null) not registered
[ 9.621942] fsl-asoc-card sound: snd_soc_register_card failed (-517)
[ 9.638227] imx-sgtl5000 sound: ASoC: CPU DAI (null) not registered
[ 9.647247] imx-sgtl5000 sound: snd_soc_register_card failed (-517)
[ 9.682092] sgtl5000 1-000a: Using internal LDO instead of VDDD
[ 9.776989] fsl-asoc-card sound: sgtl5000 <-> 2028000.ssi mapping ok
[...]
[ 70.407805] fsl-spdif-dai 2004000.spdif: expected clock rate = 265305600
[ 70.407829] fsl-spdif-dai 2004000.spdif: actual clock rate = 264000000
[ 70.407857] fsl-spdif-dai 2004000.spdif: set sample rate to 43882Hz for 44100Hz playback
[ 70.407867] fsl-spdif-dai 2004000.spdif: STCSCH: 0x304000
[ 70.407875] fsl-spdif-dai 2004000.spdif: STCSCL: 0x000000
[ 70.469948] fsl-spdif-dai 2004000.spdif: expected clock rate = 265305600
[ 70.469965] fsl-spdif-dai 2004000.spdif: actual clock rate = 264000000
[ 70.469977] fsl-spdif-dai 2004000.spdif: set sample rate to 43882Hz for 44100Hz playback
[ 70.469999] fsl-spdif-dai 2004000.spdif: STCSCH: 0x304000
[ 70.470014] fsl-spdif-dai 2004000.spdif: STCSCL: 0x000000
[...]
Then when I try to play sound through spdif:
[ 140.176536] fsl-spdif-dai 2004000.spdif: expected clock rate = 265305600
[ 140.176555] fsl-spdif-dai 2004000.spdif: actual clock rate = 264000000
[ 140.176566] fsl-spdif-dai 2004000.spdif: set sample rate to 43882Hz for 44100Hz playback
[ 140.176579] fsl-spdif-dai 2004000.spdif: STCSCH: 0x304000
[ 140.176587] fsl-spdif-dai 2004000.spdif: STCSCL: 0x000000
linux-libre-4.7 with my patch, i.e. clocks defined like this :
arch/arm/boot/dts/imx6qdl.dtsi:
aips-bus at 02000000 { /* AIPS1 */
[...]
spba-bus at 02000000 {
[...]
spdif: spdif at 02004000 {
clocks = <&clks IMX6QDL_CLK_SPDIF_GCLK>, <&clks IMX6QDL_CLK_OSC>,
<&clks IMX6QDL_CLK_SPDIF>, <&clks IMX6QDL_CLK_DUMMY>,
<&clks IMX6QDL_CLK_DUMMY>, <&clks IMX6QDL_CLK_DUMMY>,
<&clks IMX6QDL_CLK_DUMMY>, <&clks IMX6QDL_CLK_DUMMY>,
<&clks IMX6QDL_CLK_DUMMY>, <&clks IMX6QDL_CLK_SPBA>;
clock-names = "core", "rxtx0",
"rxtx1", "rxtx2",
"rxtx3", "rxtx4",
"rxtx5", "rxtx6",
"rxtx7", "spba";
[...]
The messages at boot:
[...]
[ 6.655532] imx-spdif sound-spdif: ASoC: CPU DAI (null) not registered
[ 6.655545] imx-spdif sound-spdif: snd_soc_register_card failed: -517
[ 6.656895] fsl-spdif-dai 2004000.spdif: enter fsl_spdif_probe
[ 6.657567] fsl-spdif-dai 2004000.spdif: enter fsl_spdif_probe_txclk
[ 6.660895] fsl-spdif-dai 2004000.spdif: use rxtx1 as tx clock source for 32000Hz sample rate
[ 6.660902] fsl-spdif-dai 2004000.spdif: use txclk df 4 for 32000Hz sample rate
[ 6.660907] fsl-spdif-dai 2004000.spdif: the best rate for 32000Hz sample rate is 31719Hz
[ 6.660911] fsl-spdif-dai 2004000.spdif: enter fsl_spdif_probe_txclk
[ 6.662922] fsl-spdif-dai 2004000.spdif: use rxtx1 as tx clock source for 44100Hz sample rate
[ 6.662927] fsl-spdif-dai 2004000.spdif: use txclk df 9 for 44100Hz sample rate
[ 6.662932] fsl-spdif-dai 2004000.spdif: the best rate for 44100Hz sample rate is 43859Hz
[ 6.662936] fsl-spdif-dai 2004000.spdif: enter fsl_spdif_probe_txclk
[ 6.663205] fsl-asoc-card sound: ASoC: CPU DAI (null) not registered
[ 6.663213] fsl-asoc-card sound: snd_soc_register_card failed (-517)
[ 6.676779] fsl-spdif-dai 2004000.spdif: use rxtx1 as tx clock source for 48000Hz sample rate
[ 6.676785] fsl-spdif-dai 2004000.spdif: use txclk df 5 for 48000Hz sample rate
[ 6.676790] fsl-spdif-dai 2004000.spdif: the best rate for 48000Hz sample rate is 47368Hz
[ 6.676795] fsl-spdif-dai 2004000.spdif: enter fsl_spdif_probe_txclk
[ 6.687008] imx-sgtl5000 sound: ASoC: CPU DAI (null) not registered
[ 6.687016] imx-sgtl5000 sound: snd_soc_register_card failed (-517)
[ 6.704876] fsl-spdif-dai 2004000.spdif: use rxtx1 as tx clock source for 96000Hz sample rate
[ 6.704882] fsl-spdif-dai 2004000.spdif: use txclk df 3 for 96000Hz sample rate
[ 6.704888] fsl-spdif-dai 2004000.spdif: the best rate for 96000Hz sample rate is 94736Hz
[ 6.704892] fsl-spdif-dai 2004000.spdif: enter fsl_spdif_probe_txclk
[ 6.723554] fsl-spdif-dai 2004000.spdif: use rxtx0 as tx clock source for 192000Hz sample rate
[ 6.723561] fsl-spdif-dai 2004000.spdif: use txclk df 2 for 192000Hz sample rate
[ 6.723567] fsl-spdif-dai 2004000.spdif: the best rate for 192000Hz sample rate is 187500Hz
[ 6.723679] fsl-spdif-dai 2004000.spdif: imx_pcm_dma_init failed: -517
[ 7.626351] fsl-asrc 2034000.asrc: driver registered
[ 7.642378] imx-spdif sound-spdif: ASoC: CPU DAI (null) not registered
[ 7.650279] imx-spdif sound-spdif: snd_soc_register_card failed: -517
[ 7.667765] fsl-asoc-card sound: ASoC: CPU DAI (null) not registered
[ 7.676924] fsl-asoc-card sound: snd_soc_register_card failed (-517)
[ 7.696535] imx-sgtl5000 sound: ASoC: CPU DAI (null) not registered
[ 7.704977] imx-sgtl5000 sound: snd_soc_register_card failed (-517)
[ 7.718722] sgtl5000 1-000a: sgtl5000 revision 0x11
[...]
[ 7.725855] fsl-ssi-dai 2028000.ssi: No cache defaults, reading back from HW
[ 7.728561] fsl-spdif-dai 2004000.spdif: enter fsl_spdif_probe
[ 7.738178] fsl-spdif-dai 2004000.spdif: enter fsl_spdif_probe_txclk
[ 7.740172] fsl-spdif-dai 2004000.spdif: use rxtx1 as tx clock source for 32000Hz sample rate
[ 7.740177] fsl-spdif-dai 2004000.spdif: use txclk df 4 for 32000Hz sample rate
[ 7.740183] fsl-spdif-dai 2004000.spdif: the best rate for 32000Hz sample rate is 31719Hz
[ 7.740187] fsl-spdif-dai 2004000.spdif: enter fsl_spdif_probe_txclk
[ 7.760659] fsl-spdif-dai 2004000.spdif: use rxtx1 as tx clock source for 44100Hz sample rate
[ 7.760665] fsl-spdif-dai 2004000.spdif: use txclk df 9 for 44100Hz sample rate
[ 7.760672] fsl-spdif-dai 2004000.spdif: the best rate for 44100Hz sample rate is 43859Hz
[ 7.760676] fsl-spdif-dai 2004000.spdif: enter fsl_spdif_probe_txclk
[ 7.765495] fsl-spdif-dai 2004000.spdif: use rxtx1 as tx clock source for 48000Hz sample rate
[ 7.765501] fsl-spdif-dai 2004000.spdif: use txclk df 5 for 48000Hz sample rate
[ 7.765506] fsl-spdif-dai 2004000.spdif: the best rate for 48000Hz sample rate is 47368Hz
[ 7.765510] fsl-spdif-dai 2004000.spdif: enter fsl_spdif_probe_txclk
[ 7.774373] fsl-spdif-dai 2004000.spdif: use rxtx1 as tx clock source for 96000Hz sample rate
[ 7.774378] fsl-spdif-dai 2004000.spdif: use txclk df 3 for 96000Hz sample rate
[ 7.774384] fsl-spdif-dai 2004000.spdif: the best rate for 96000Hz sample rate is 94736Hz
[ 7.774388] fsl-spdif-dai 2004000.spdif: enter fsl_spdif_probe_txclk
[ 7.778530] fsl-spdif-dai 2004000.spdif: use rxtx0 as tx clock source for 192000Hz sample rate
[ 7.778536] fsl-spdif-dai 2004000.spdif: use txclk df 2 for 192000Hz sample rate
[ 7.778541] fsl-spdif-dai 2004000.spdif: the best rate for 192000Hz sample rate is 187500Hz
[ 7.783897] fsl-spdif-dai 2004000.spdif: imx_pcm_dma_init failed: -517
[ 7.828163] imx-spdif sound-spdif: ASoC: CPU DAI (null) not registered
[ 7.828174] imx-spdif sound-spdif: snd_soc_register_card failed: -517
[ 7.828703] fsl-asoc-card sound: ASoC: CPU DAI (null) not registered
[ 7.828712] fsl-asoc-card sound: snd_soc_register_card failed (-517)
[ 7.828825] imx-sgtl5000 sound: ASoC: CPU DAI (null) not registered
[ 7.828832] imx-sgtl5000 sound: snd_soc_register_card failed (-517)
[ 7.829908] fsl-ssi-dai 2028000.ssi: No cache defaults, reading back from HW
[ 7.834312] fsl-spdif-dai 2004000.spdif: enter fsl_spdif_probe
[ 7.837686] fsl-spdif-dai 2004000.spdif: enter fsl_spdif_probe_txclk
[ 7.842472] fsl-spdif-dai 2004000.spdif: use rxtx1 as tx clock source for 32000Hz sample rate
[ 7.842478] fsl-spdif-dai 2004000.spdif: use txclk df 4 for 32000Hz sample rate
[ 7.842485] fsl-spdif-dai 2004000.spdif: the best rate for 32000Hz sample rate is 31719Hz
[ 7.842490] fsl-spdif-dai 2004000.spdif: enter fsl_spdif_probe_txclk
[ 7.844695] fsl-spdif-dai 2004000.spdif: use rxtx1 as tx clock source for 44100Hz sample rate
[ 7.844700] fsl-spdif-dai 2004000.spdif: use txclk df 9 for 44100Hz sample rate
[ 7.844705] fsl-spdif-dai 2004000.spdif: the best rate for 44100Hz sample rate is 43859Hz
[ 7.844708] fsl-spdif-dai 2004000.spdif: enter fsl_spdif_probe_txclk
[ 7.848458] fsl-spdif-dai 2004000.spdif: use rxtx1 as tx clock source for 48000Hz sample rate
[ 7.848464] fsl-spdif-dai 2004000.spdif: use txclk df 5 for 48000Hz sample rate
[ 7.848470] fsl-spdif-dai 2004000.spdif: the best rate for 48000Hz sample rate is 47368Hz
[ 7.848474] fsl-spdif-dai 2004000.spdif: enter fsl_spdif_probe_txclk
[ 7.858907] fsl-spdif-dai 2004000.spdif: use rxtx1 as tx clock source for 96000Hz sample rate
[ 7.858912] fsl-spdif-dai 2004000.spdif: use txclk df 3 for 96000Hz sample rate
[ 7.858917] fsl-spdif-dai 2004000.spdif: the best rate for 96000Hz sample rate is 94736Hz
[ 7.858921] fsl-spdif-dai 2004000.spdif: enter fsl_spdif_probe_txclk
[ 7.868189] fsl-spdif-dai 2004000.spdif: use rxtx0 as tx clock source for 192000Hz sample rate
[ 7.868195] fsl-spdif-dai 2004000.spdif: use txclk df 2 for 192000Hz sample rate
[ 7.868200] fsl-spdif-dai 2004000.spdif: the best rate for 192000Hz sample rate is 187500Hz
[ 7.868555] fsl-spdif-dai 2004000.spdif: imx_pcm_dma_init failed: -517
[ 8.094960] imx-spdif sound-spdif: ASoC: CPU DAI (null) not registered
[ 8.094994] imx-spdif sound-spdif: snd_soc_register_card failed: -517
[ 8.095669] fsl-asoc-card sound: ASoC: CPU DAI (null) not registered
[ 8.095808] fsl-asoc-card sound: snd_soc_register_card failed (-517)
[ 8.098338] imx-sgtl5000 sound: ASoC: CPU DAI (null) not registered
[ 8.098347] imx-sgtl5000 sound: snd_soc_register_card failed (-517)
[ 8.099067] fsl-ssi-dai 2028000.ssi: No cache defaults, reading back from HW
[ 8.109691] fsl-spdif-dai 2004000.spdif: enter fsl_spdif_probe
[ 8.113038] fsl-spdif-dai 2004000.spdif: enter fsl_spdif_probe_txclk
[ 8.117534] fsl-spdif-dai 2004000.spdif: use rxtx1 as tx clock source for 32000Hz sample rate
[ 8.117539] fsl-spdif-dai 2004000.spdif: use txclk df 4 for 32000Hz sample rate
[ 8.117544] fsl-spdif-dai 2004000.spdif: the best rate for 32000Hz sample rate is 31719Hz
[ 8.117548] fsl-spdif-dai 2004000.spdif: enter fsl_spdif_probe_txclk
[ 8.120341] fsl-spdif-dai 2004000.spdif: use rxtx1 as tx clock source for 44100Hz sample rate
[ 8.120347] fsl-spdif-dai 2004000.spdif: use txclk df 9 for 44100Hz sample rate
[ 8.120352] fsl-spdif-dai 2004000.spdif: the best rate for 44100Hz sample rate is 43859Hz
[ 8.120356] fsl-spdif-dai 2004000.spdif: enter fsl_spdif_probe_txclk
[ 8.134938] fsl-spdif-dai 2004000.spdif: use rxtx1 as tx clock source for 48000Hz sample rate
[ 8.134944] fsl-spdif-dai 2004000.spdif: use txclk df 5 for 48000Hz sample rate
[ 8.134949] fsl-spdif-dai 2004000.spdif: the best rate for 48000Hz sample rate is 47368Hz
[ 8.134953] fsl-spdif-dai 2004000.spdif: enter fsl_spdif_probe_txclk
[ 8.139127] fsl-spdif-dai 2004000.spdif: use rxtx1 as tx clock source for 96000Hz sample rate
[ 8.139133] fsl-spdif-dai 2004000.spdif: use txclk df 3 for 96000Hz sample rate
[ 8.139139] fsl-spdif-dai 2004000.spdif: the best rate for 96000Hz sample rate is 94736Hz
[ 8.139143] fsl-spdif-dai 2004000.spdif: enter fsl_spdif_probe_txclk
[ 8.147727] fsl-spdif-dai 2004000.spdif: use rxtx0 as tx clock source for 192000Hz sample rate
[ 8.147734] fsl-spdif-dai 2004000.spdif: use txclk df 2 for 192000Hz sample rate
[ 8.147740] fsl-spdif-dai 2004000.spdif: the best rate for 192000Hz sample rate is 187500Hz
[ 8.147822] fsl-spdif-dai 2004000.spdif: imx_pcm_dma_init failed: -517
[...]
[ 8.831797] 20ec000.sdma: Missing Free firmware (non-Free firmware loading is disabled)
[ 8.880684] imx-sdma 20ec000.sdma: failed to get firmware from device tree
[ 8.910258] imx-sdma 20ec000.sdma: Direct firmware load for /*(DEBLOBBED)*/ failed with error -2
[ 9.073968] imx-spdif sound-spdif: ASoC: CPU DAI (null) not registered
[ 9.081645] imx-spdif sound-spdif: snd_soc_register_card failed: -517
[ 9.095074] fsl-asoc-card sound: ASoC: CPU DAI (null) not registered
[ 9.110834] fsl-asoc-card sound: snd_soc_register_card failed (-517)
[ 9.121216] imx-sgtl5000 sound: ASoC: CPU DAI (null) not registered
[ 9.130267] imx-sgtl5000 sound: snd_soc_register_card failed (-517)
[ 9.153016] fsl-ssi-dai 2028000.ssi: No cache defaults, reading back from HW
[ 9.165177] fsl-spdif-dai 2004000.spdif: enter fsl_spdif_probe
[ 9.195832] fsl-spdif-dai 2004000.spdif: enter fsl_spdif_probe_txclk
[ 9.211198] fsl-spdif-dai 2004000.spdif: use rxtx1 as tx clock source for 32000Hz sample rate
[ 9.217917] fsl-spdif-dai 2004000.spdif: use txclk df 4 for 32000Hz sample rate
[ 9.224900] fsl-spdif-dai 2004000.spdif: the best rate for 32000Hz sample rate is 31719Hz
[ 9.231164] fsl-spdif-dai 2004000.spdif: enter fsl_spdif_probe_txclk
[ 9.241790] fsl-spdif-dai 2004000.spdif: use rxtx1 as tx clock source for 44100Hz sample rate
[ 9.248073] fsl-spdif-dai 2004000.spdif: use txclk df 9 for 44100Hz sample rate
[ 9.254457] fsl-spdif-dai 2004000.spdif: the best rate for 44100Hz sample rate is 43859Hz
[ 9.260822] fsl-spdif-dai 2004000.spdif: enter fsl_spdif_probe_txclk
[ 9.279536] fsl-spdif-dai 2004000.spdif: use rxtx1 as tx clock source for 48000Hz sample rate
[ 9.285950] fsl-spdif-dai 2004000.spdif: use txclk df 5 for 48000Hz sample rate
[ 9.292236] fsl-spdif-dai 2004000.spdif: the best rate for 48000Hz sample rate is 47368Hz
[ 9.298648] fsl-spdif-dai 2004000.spdif: enter fsl_spdif_probe_txclk
[ 9.313550] fsl-spdif-dai 2004000.spdif: use rxtx1 as tx clock source for 96000Hz sample rate
[...]
[ 9.328117] fsl-spdif-dai 2004000.spdif: use txclk df 3 for 96000Hz sample rate
[ 9.334526] fsl-spdif-dai 2004000.spdif: the best rate for 96000Hz sample rate is 94736Hz
[ 9.340888] fsl-spdif-dai 2004000.spdif: enter fsl_spdif_probe_txclk
[ 9.351639] fsl-spdif-dai 2004000.spdif: use rxtx0 as tx clock source for 192000Hz sample rate
[ 9.358052] fsl-spdif-dai 2004000.spdif: use txclk df 2 for 192000Hz sample rate
[ 9.364471] fsl-spdif-dai 2004000.spdif: the best rate for 192000Hz sample rate is 187500Hz
[ 9.417677] imx-spdif sound-spdif: snd-soc-dummy-dai <-> 2004000.spdif mapping ok
[ 9.461316] sgtl5000 1-000a: Using internal LDO instead of VDDD
[ 9.592189] fsl-asoc-card sound: sgtl5000 <-> 2028000.ssi mapping ok
[...]
[ 69.198853] fsl-spdif-dai 2004000.spdif: expected clock rate = 25401600
[ 69.198874] fsl-spdif-dai 2004000.spdif: actual clock rate = 25263158
[ 69.198892] fsl-spdif-dai 2004000.spdif: set sample rate to 43859Hz for 44100Hz playback
[ 69.198902] fsl-spdif-dai 2004000.spdif: STCSCH: 0x304000
[ 69.198910] fsl-spdif-dai 2004000.spdif: STCSCL: 0x000000
[ 69.349763] fsl-spdif-dai 2004000.spdif: expected clock rate = 25401600
[ 69.349776] fsl-spdif-dai 2004000.spdif: actual clock rate = 25263158
[ 69.349793] fsl-spdif-dai 2004000.spdif: set sample rate to 43859Hz for 44100Hz playback
[ 69.349812] fsl-spdif-dai 2004000.spdif: STCSCH: 0x304000
[ 69.349820] fsl-spdif-dai 2004000.spdif: STCSCL: 0x000000
[...]
Then when I try (successfully) to play sound through spdif:
[ 113.186850] fsl-spdif-dai 2004000.spdif: expected clock rate = 25401600
[ 113.186863] fsl-spdif-dai 2004000.spdif: actual clock rate = 25263158
[ 113.186872] fsl-spdif-dai 2004000.spdif: set sample rate to 43859Hz for 44100Hz playback
[ 113.186882] fsl-spdif-dai 2004000.spdif: STCSCH: 0x304000
[ 113.186889] fsl-spdif-dai 2004000.spdif: STCSCL: 0x000000
Does it mean that a 43859Hz clock is close enough to theoretical 44100Hz
but 43882Hz is not ?
The clock that doesn't work seems closer to the desired value.
I don't understand.
Maybe there's something wrong with rxtx6 (IMX6QDL_CLK_MLB). This clock
does not seem to be used elsewhere (I mean in files, it's used in any
board that includes imx6qdl.dtsi)
include/dt-bindings/clock/imx6qdl-clock.h:
#define IMX6QDL_CLK_MLB 139
Might it have to do with the fact I'm using (still trying in fact) to use etnaviv ?
drivers/clk/imx/clk-imx6q.c:
if (clk_on_imx6dl())
/*
* The multiplexer and divider of the imx6q clock gpu2d get
* redefined/reused as mlb_sys_sel and mlb_sys_clk_podf on imx6dl.
*/
clk[IMX6QDL_CLK_MLB] = imx_clk_gate2("mlb", "gpu2d_core_podf", base + 0x74, 18);
else
clk[IMX6QDL_CLK_MLB] = imx_clk_gate2("mlb", "axi", base + 0x74, 18);
But I'm on a imx6q not imx6dl .
It seems I've found a similar case, just more ancient. I've tried the
patch in the last message there instead of the one I sent, and it
works for me (gives me sound on the spdif output) but I still don't
understand.
https://community.nxp.com/thread/387131
The patch is
--- linux-4.7-no-spdif-out/arch/arm/boot/dts/imx6qdl.dtsi 2016-07-25 00:19:43.000000000 +0200
+++ linux-4.7/arch/arm/boot/dts/imx6qdl.dtsi 2016-08-30 12:51:37.369431791 +0200
@@ -242,7 +242,7 @@
clocks = <&clks IMX6QDL_CLK_SPDIF_GCLK>, <&clks IMX6QDL_CLK_OSC>,
<&clks IMX6QDL_CLK_SPDIF>, <&clks IMX6QDL_CLK_ASRC>,
<&clks IMX6QDL_CLK_DUMMY>, <&clks IMX6QDL_CLK_ESAI_EXTAL>,
- <&clks IMX6QDL_CLK_IPG>, <&clks IMX6QDL_CLK_MLB>,
+ <&clks IMX6QDL_CLK_IPG>, <&clks IMX6QDL_CLK_DUMMY>,
<&clks IMX6QDL_CLK_DUMMY>, <&clks IMX6QDL_CLK_SPBA>;
clock-names = "core", "rxtx0",
"rxtx1", "rxtx2",
And the dmesg is:
[...]
[ 6.757672] fsl-asoc-card sound: ASoC: CPU DAI (null) not registered
[ 6.757680] fsl-asoc-card sound: snd_soc_register_card failed (-517)
[ 6.767863] imx-sgtl5000 sound: ASoC: CPU DAI (null) not registered
[ 6.767874] imx-sgtl5000 sound: snd_soc_register_card failed (-517)
[ 6.771927] fsl-ssi-dai 2028000.ssi: No cache defaults, reading back from HW
[ 6.782230] fsl-spdif-dai 2004000.spdif: enter fsl_spdif_probe
[ 6.795682] fsl-spdif-dai 2004000.spdif: enter fsl_spdif_probe_txclk
[ 6.851089] fsl-spdif-dai 2004000.spdif: use rxtx5 as tx clock source for 32000Hz sample rate
[ 6.857631] fsl-spdif-dai 2004000.spdif: use txclk df 16 for 32000Hz sample rate
[ 6.864477] fsl-spdif-dai 2004000.spdif: use sysclk df 2 for 32000Hz sample rate
[ 6.864484] fsl-spdif-dai 2004000.spdif: the best rate for 32000Hz sample rate is 32226Hz
[ 6.864489] fsl-spdif-dai 2004000.spdif: enter fsl_spdif_probe_txclk
[ 6.909089] fsl-spdif-dai 2004000.spdif: use rxtx1 as tx clock source for 44100Hz sample rate
[ 6.909096] fsl-spdif-dai 2004000.spdif: use txclk df 9 for 44100Hz sample rate
[ 6.909101] fsl-spdif-dai 2004000.spdif: the best rate for 44100Hz sample rate is 43859Hz
[ 6.909105] fsl-spdif-dai 2004000.spdif: enter fsl_spdif_probe_txclk
[ 6.981874] fsl-spdif-dai 2004000.spdif: use rxtx1 as tx clock source for 48000Hz sample rate
[ 6.992935] fsl-spdif-dai 2004000.spdif: use txclk df 5 for 48000Hz sample rate
[ 6.992943] fsl-spdif-dai 2004000.spdif: the best rate for 48000Hz sample rate is 47368Hz
[ 6.992948] fsl-spdif-dai 2004000.spdif: enter fsl_spdif_probe_txclk
[ 6.993678] fsl-asoc-card sound: ASoC: CPU DAI (null) not registered
[ 6.993688] fsl-asoc-card sound: snd_soc_register_card failed (-517)
[ 6.993809] imx-sgtl5000 sound: ASoC: CPU DAI (null) not registered
[ 6.993816] imx-sgtl5000 sound: snd_soc_register_card failed (-517)
[ 6.994121] fsl-ssi-dai 2028000.ssi: No cache defaults, reading back from HW
[ 7.024546] 20ec000.sdma: Missing Free firmware (non-Free firmware loading is disabled)
[ 7.024577] imx-sdma 20ec000.sdma: failed to get firmware from device tree
[ 7.025416] fsl-spdif-dai 2004000.spdif: use rxtx1 as tx clock source for 96000Hz sample rate
[ 7.025422] fsl-spdif-dai 2004000.spdif: use txclk df 3 for 96000Hz sample rate
[ 7.025426] fsl-spdif-dai 2004000.spdif: the best rate for 96000Hz sample rate is 94736Hz
[ 7.025430] fsl-spdif-dai 2004000.spdif: enter fsl_spdif_probe_txclk
[ 7.040198] imx-sdma 20ec000.sdma: Direct firmware load for /*(DEBLOBBED)*/ failed with error -2
[ 7.052490] fsl-spdif-dai 2004000.spdif: use rxtx0 as tx clock source for 192000Hz sample rate
[ 7.052497] fsl-spdif-dai 2004000.spdif: use txclk df 2 for 192000Hz sample rate
[ 7.052503] fsl-spdif-dai 2004000.spdif: the best rate for 192000Hz sample rate is 187500Hz
[ 7.052601] fsl-spdif-dai 2004000.spdif: imx_pcm_dma_init failed: -517
[ 7.053550] fsl-asoc-card sound: ASoC: CPU DAI (null) not registered
[ 7.053560] fsl-asoc-card sound: snd_soc_register_card failed (-517)
[ 7.054022] imx-sgtl5000 sound: ASoC: CPU DAI (null) not registered
[ 7.054295] imx-sgtl5000 sound: snd_soc_register_card failed (-517)
[ 7.056803] fsl-ssi-dai 2028000.ssi: No cache defaults, reading back from HW
[ 7.060206] fsl-asrc 2034000.asrc: driver registered
[ 7.063842] fsl-spdif-dai 2004000.spdif: enter fsl_spdif_probe
[ 7.064485] fsl-spdif-dai 2004000.spdif: enter fsl_spdif_probe_txclk
[ 7.096570] fsl-spdif-dai 2004000.spdif: use rxtx5 as tx clock source for 32000Hz sample rate
[ 7.096579] fsl-spdif-dai 2004000.spdif: use txclk df 16 for 32000Hz sample rate
[ 7.096584] fsl-spdif-dai 2004000.spdif: use sysclk df 2 for 32000Hz sample rate
[ 7.096589] fsl-spdif-dai 2004000.spdif: the best rate for 32000Hz sample rate is 32226Hz
[ 7.096593] fsl-spdif-dai 2004000.spdif: enter fsl_spdif_probe_txclk
[ 7.123283] fsl-spdif-dai 2004000.spdif: use rxtx1 as tx clock source for 44100Hz sample rate
[ 7.123289] fsl-spdif-dai 2004000.spdif: use txclk df 9 for 44100Hz sample rate
[ 7.123295] fsl-spdif-dai 2004000.spdif: the best rate for 44100Hz sample rate is 43859Hz
[ 7.123299] fsl-spdif-dai 2004000.spdif: enter fsl_spdif_probe_txclk
[ 7.144167] fsl-spdif-dai 2004000.spdif: use rxtx1 as tx clock source for 48000Hz sample rate
[ 7.144173] fsl-spdif-dai 2004000.spdif: use txclk df 5 for 48000Hz sample rate
[ 7.144180] fsl-spdif-dai 2004000.spdif: the best rate for 48000Hz sample rate is 47368Hz
[ 7.144185] fsl-spdif-dai 2004000.spdif: enter fsl_spdif_probe_txclk
[ 7.169620] fsl-spdif-dai 2004000.spdif: use rxtx1 as tx clock source for 96000Hz sample rate
[ 7.169626] fsl-spdif-dai 2004000.spdif: use txclk df 3 for 96000Hz sample rate
[ 7.169634] fsl-spdif-dai 2004000.spdif: the best rate for 96000Hz sample rate is 94736Hz
[ 7.169637] fsl-spdif-dai 2004000.spdif: enter fsl_spdif_probe_txclk
[ 7.190745] fsl-spdif-dai 2004000.spdif: use rxtx0 as tx clock source for 192000Hz sample rate
[ 7.190753] fsl-spdif-dai 2004000.spdif: use txclk df 2 for 192000Hz sample rate
[ 7.190758] fsl-spdif-dai 2004000.spdif: the best rate for 192000Hz sample rate is 187500Hz
[ 7.190883] fsl-spdif-dai 2004000.spdif: imx_pcm_dma_init failed: -517
[ 7.191660] fsl-asoc-card sound: ASoC: CPU DAI (null) not registered
[ 7.191671] fsl-asoc-card sound: snd_soc_register_card failed (-517)
[ 7.191777] imx-sgtl5000 sound: ASoC: CPU DAI (null) not registered
[ 7.191784] imx-sgtl5000 sound: snd_soc_register_card failed (-517)
[ 7.192106] fsl-ssi-dai 2028000.ssi: No cache defaults, reading back from HW
[ 7.220888] fsl-spdif-dai 2004000.spdif: enter fsl_spdif_probe
[ 7.221677] fsl-spdif-dai 2004000.spdif: enter fsl_spdif_probe_txclk
[ 7.246497] fsl-spdif-dai 2004000.spdif: use rxtx5 as tx clock source for 32000Hz sample rate
[ 7.246504] fsl-spdif-dai 2004000.spdif: use txclk df 16 for 32000Hz sample rate
[ 7.246510] fsl-spdif-dai 2004000.spdif: use sysclk df 2 for 32000Hz sample rate
[ 7.246515] fsl-spdif-dai 2004000.spdif: the best rate for 32000Hz sample rate is 32226Hz
[ 7.246520] fsl-spdif-dai 2004000.spdif: enter fsl_spdif_probe_txclk
[ 7.266974] fsl-spdif-dai 2004000.spdif: use rxtx1 as tx clock source for 44100Hz sample rate
[ 7.266980] fsl-spdif-dai 2004000.spdif: use txclk df 9 for 44100Hz sample rate
[ 7.266985] fsl-spdif-dai 2004000.spdif: the best rate for 44100Hz sample rate is 43859Hz
[ 7.266989] fsl-spdif-dai 2004000.spdif: enter fsl_spdif_probe_txclk
[ 7.288040] fsl-spdif-dai 2004000.spdif: use rxtx1 as tx clock source for 48000Hz sample rate
[ 7.288046] fsl-spdif-dai 2004000.spdif: use txclk df 5 for 48000Hz sample rate
[ 7.288051] fsl-spdif-dai 2004000.spdif: the best rate for 48000Hz sample rate is 47368Hz
[ 7.288055] fsl-spdif-dai 2004000.spdif: enter fsl_spdif_probe_txclk
[ 7.320893] fsl-spdif-dai 2004000.spdif: use rxtx1 as tx clock source for 96000Hz sample rate
[ 7.320901] fsl-spdif-dai 2004000.spdif: use txclk df 3 for 96000Hz sample rate
[ 7.320909] fsl-spdif-dai 2004000.spdif: the best rate for 96000Hz sample rate is 94736Hz
[ 7.320915] fsl-spdif-dai 2004000.spdif: enter fsl_spdif_probe_txclk
[ 7.342352] fsl-spdif-dai 2004000.spdif: use rxtx0 as tx clock source for 192000Hz sample rate
[ 7.342363] fsl-spdif-dai 2004000.spdif: use txclk df 2 for 192000Hz sample rate
[ 7.342370] fsl-spdif-dai 2004000.spdif: the best rate for 192000Hz sample rate is 187500Hz
[ 7.369879] fsl-asoc-card sound: ASoC: CPU DAI (null) not registered
[ 7.369889] fsl-asoc-card sound: snd_soc_register_card failed (-517)
[ 7.370024] imx-sgtl5000 sound: ASoC: CPU DAI (null) not registered
[ 7.370033] imx-sgtl5000 sound: snd_soc_register_card failed (-517)
[ 7.391119] fsl-ssi-dai 2028000.ssi: No cache defaults, reading back from HW
[ 7.422777] fsl-asoc-card sound: ASoC: CODEC DAI sgtl5000 not registered
[ 7.422789] fsl-asoc-card sound: snd_soc_register_card failed (-517)
[ 7.423120] imx-sgtl5000 sound: ASoC: CODEC DAI sgtl5000 not registered
[ 7.423133] imx-sgtl5000 sound: snd_soc_register_card failed (-517)
[ 7.454462] sgtl5000 1-000a: sgtl5000 revision 0x11
[...]
[ 7.658346] sgtl5000 1-000a: Using internal LDO instead of VDDD
[ 7.766216] fsl-asoc-card sound: sgtl5000 <-> 2028000.ssi mapping ok
[...]
[ 8.496784] imx-spdif sound-spdif: snd-soc-dummy-dai <-> 2004000.spdif mapping ok
[...]
[ 110.494306] fsl-spdif-dai 2004000.spdif: expected clock rate = 25401600
[ 110.494321] fsl-spdif-dai 2004000.spdif: actual clock rate = 25263158
[ 110.494343] fsl-spdif-dai 2004000.spdif: set sample rate to 43859Hz for 44100Hz playback
[ 110.494352] fsl-spdif-dai 2004000.spdif: STCSCH: 0x304000
[ 110.494359] fsl-spdif-dai 2004000.spdif: STCSCL: 0x000000
[ 110.549945] fsl-spdif-dai 2004000.spdif: expected clock rate = 25401600
[ 110.549959] fsl-spdif-dai 2004000.spdif: actual clock rate = 25263158
[ 110.549973] fsl-spdif-dai 2004000.spdif: set sample rate to 43859Hz for 44100Hz playback
[ 110.549988] fsl-spdif-dai 2004000.spdif: STCSCH: 0x304000
[ 110.549996] fsl-spdif-dai 2004000.spdif: STCSCL: 0x000000
Then, when I play music:
[ 178.269300] fsl-spdif-dai 2004000.spdif: expected clock rate = 25401600
[ 178.269311] fsl-spdif-dai 2004000.spdif: actual clock rate = 25263158
[ 178.269321] fsl-spdif-dai 2004000.spdif: set sample rate to 43859Hz for 44100Hz playback
[ 178.269332] fsl-spdif-dai 2004000.spdif: STCSCH: 0x304000
[ 178.269339] fsl-spdif-dai 2004000.spdif: STCSCL: 0x000000
AFAICS it just uses rxtx5 (IMX6QDL_CLK_IPG) for 32KHz and gets a little closer to that.
But I haven't tried to play at 32KHz
Is there anything else I can try ?
Thanks.
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