Re: [alsa-devel] Imx6 i2s master driver without i2c

10 May 2016


      Hi Nicola,
Answers inline.  BTW, it's highly preferred on this list that you
don't 'top-post', which I had to look up when I was told not to do it
:-).  Basically, put replies below the stuff they refer to, not above,
so somebody coming into the middle of the conversation later can read
it in a normal top to bottom order rather than a bottom to top, or
worse yet, some combination.
On Tue, May 10, 2016 at 8:28 AM, nick83ola nick83ola@gmail.com wrote:
...
enabling kernel debug on all modules it says:
sound/soc/fsl/imx-pcm-fiq.c:226 [imx_pcm_fiq]snd_imx_pcm_mmap =_ "%s: ret:
%d %p 0x%08x 0x%08x\012"
sound/soc/fsl/fsl_ssi.c:1289 [snd_soc_fsl_ssi]fsl_ssi_imx_probe =_ "could
not get baud clock: %ld\012"
sound/soc/fsl/imx-audmux.c:333 [snd_soc_imx_audmux]imx_audmux_probe =p
"cannot get clock: %ld\012"
sound/soc/generic/simple-card.c:180
[snd_soc_simple_card]asoc_simple_card_parse_of =p "card-name : %s\012"
sound/soc/generic/simple-card.c:181
[snd_soc_simple_card]asoc_simple_card_parse_of =p "platform : %04x\012"
sound/soc/generic/simple-card.c:185
[snd_soc_simple_card]asoc_simple_card_parse_of =p "cpu : %s / %04x / %d\012"
sound/soc/generic/simple-card.c:189
[snd_soc_simple_card]asoc_simple_card_parse_of =p "codec : %s / %04x /
%d\012"
sound/soc/generic/simple-card.c:33
[snd_soc_simple_card]__asoc_simple_card_dai_init =p "ASoC: set_fmt is not
supported\012"
2016-05-10 16:57 GMT+02:00 nick83ola nick83ola@gmail.com:
...
Hello Caleb
thanks for your help
Here's my current dts
I want to use ssi1 on port 4
I added #sound-dai-cells = <0>; on ssi1 because simple card complaijning
about it (what is that?? I could not find documentation about it)
Yeah, I don't really understand how that stuff works.  I just have a
working setup, so I go with it.
...
...
Now the driver says:
 asoc-simple-card sound.26: snd-soc-dummy-dai <-> 2028000.ssi mapping ok
Yay!
...
...
and
...
aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: D2028000ssisnds [2028000.ssi-snd-soc-dummy-dai], device 0:
2028000.ssi-snd-soc-dummy-dai snd-soc-dummy-dai-0 []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
...
aplay -L
null
    Discard all samples (playback) or generate zero samples (capture)
sysdefault:CARD=D2028000ssisnds
    2028000.ssi-snd-soc-dummy-dai,
    Default Audio Device
Are you using the new kernel I pointed you to (v4.5) , or still the
old 3.14?  I don't have my system up right now to check against what
mine looks like.
For the most part, people on this list are on the latest kernel, and
are not terribly motivated to go back and figure out problems with old
kernels.
...
...
but if I try to play a file it hangs and nothing escape
How I can debug the various modules? ssi, dma, ???
Well, the way I do it is with lots and lots of printk's, and a really
fast automated way to rebuild/copy/reboot the kernel (a custom
makefile that does it all for me).
I don't see anything obviously wrong with your DTS, but I'm no expert.
You might want to try with a v4.5 kernel to see if that makes any
difference.  Sorry I can't be of more help, but kernel hacking is
definitely not my main job :-)
-Caleb
...
...
how I can print debug messages?? (i cannot see the various dev_dbg no
matter what I try...)
==================================================================
/dts-v1/;
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/sound/fsl-imx-audmux.h>
#include "imx6dl.dtsi"
#include "imx6qdl-icore.dtsi"
#define SSI_TEST_MASTER
/*

port 4 is datasheet port 5 (aud5)
port 6 is datasheet port 7 (ssi3)

*/
#define AUDMUX_EXT_PORT 3
#define AUDMUX_INT_PORT 0
#define AUDMUX_INT_PORT_NAME port4
&audmux {
/*    pinctrl-names = "default";
    pinctrl-0 = <&pinctrl_audmux_4>;*/
    status = "okay";
};
&ssi1 {
    #sound-dai-cells = <0>;
    pinctrl-names = "default";
    pinctrl-0 = <&pinctrl_audmux_4>;
// select the a clock parent suitable for 48000 Hz sampling rate
assigned-clocks = <&clks IMX6QDL_CLK_SSI1_SEL>, <&clks

IMX6QDL_CLK_SSI1>;
    assigned-clock-parents = <&clks IMX6QDL_CLK_PLL4_AUDIO_DIV>;
    assigned-clock-rates = <0>, <49152000>;
    fsl,mode = "i2s-master";
    status = "okay";
};
&audmux {
    status = "okay";
ssi1 {
    fsl,audmux-port = <AUDMUX_INT_PORT>;
    fsl,port-config = <

#ifdef SSI_TEST_MASTER
            IMX_AUDMUX_V2_PTCR_SYN
#else
            (IMX_AUDMUX_V2_PTCR_TFSDIR |
            IMX_AUDMUX_V2_PTCR_TFSEL(AUDMUX_EXT_PORT) |
            IMX_AUDMUX_V2_PTCR_TCLKDIR |
            IMX_AUDMUX_V2_PTCR_TCSEL(AUDMUX_EXT_PORT) |
            IMX_AUDMUX_V2_PTCR_SYN
            )
#endif
            IMX_AUDMUX_V2_PDCR_RXDSEL(AUDMUX_EXT_PORT)
        >;
    };
AUDMUX_INT_PORT_NAME {
    fsl,audmux-port = <AUDMUX_EXT_PORT>;
    fsl,port-config = <

#ifdef SSI_TEST_MASTER
            (IMX_AUDMUX_V2_PTCR_TFSDIR |
            IMX_AUDMUX_V2_PTCR_TFSEL(AUDMUX_INT_PORT) |
            IMX_AUDMUX_V2_PTCR_TCLKDIR |
            IMX_AUDMUX_V2_PTCR_TCSEL(AUDMUX_INT_PORT) |
            IMX_AUDMUX_V2_PTCR_SYN
            )
#else
            IMX_AUDMUX_V2_PTCR_SYN
#endif
            IMX_AUDMUX_V2_PDCR_RXDSEL(AUDMUX_INT_PORT)
        >;
    };
};
...
...
/ {
    model = "Engicam i.CoreM6 DualLite/Solo starterkit";
    compatible = "fsl,imx6-icore", "fsl,imx6dl";
codec_test: codec_test {
    compatible = "linux,snd-soc-dummy";
    #sound-dai-cells = <0>;
};

sound {
    compatible = "simple-audio-card";
    simple-audio-card,name = "test";
    simple-audio-card,format="dsp_a";
    simple-audio-card,frame-master = <&sound2_ssi>;
    simple-audio-card,bitclock-master = <&sound2_ssi>;

    sound2_ssi: simple-audio-card,cpu {
        sound-dai = <&ssi1>;
        system-clock-frequency = <1536000>;
        dai-tdm-slot-num = <2>;
        dai-tdm-slot-width = <16>;
    };

    sound2codec: simple-audio-card,codec {
        sound-dai = <&codec_test>;
    };
};


};
&iomuxc {
    audmux {
        pinctrl_audmux_1: audmux-1 {
            fsl,pins = <
                MX6QDL_PAD_SD2_DAT0__AUD4_RXD  0x130b0
                MX6QDL_PAD_SD2_DAT3__AUD4_TXC  0x130b0
                MX6QDL_PAD_SD2_DAT2__AUD4_TXD  0x110b0
                MX6QDL_PAD_SD2_DAT1__AUD4_TXFS 0x130b0
            >;
        };
    pinctrl_audmux_2: audmux-2 {
        fsl,pins = <
            MX6QDL_PAD_CSI0_DAT7__AUD3_RXD  0x130b0
            MX6QDL_PAD_CSI0_DAT4__AUD3_TXC  0x130b0
            MX6QDL_PAD_CSI0_DAT5__AUD3_TXD  0x110b0
            MX6QDL_PAD_CSI0_DAT6__AUD3_TXFS 0x130b0
        >;
    };

    pinctrl_audmux_3: audmux-3 {
        fsl,pins = <
            MX6QDL_PAD_DISP0_DAT16__AUD5_TXC  0x130b0
            MX6QDL_PAD_DISP0_DAT18__AUD5_TXFS 0x130b0
            MX6QDL_PAD_DISP0_DAT19__AUD5_RXD  0x130b0
        >;
    };

    pinctrl_audmux_4: audmux-4 {
        fsl,pins = <
            MX6QDL_PAD_DISP0_DAT20__AUD4_TXC  0x130b0
            MX6QDL_PAD_DISP0_DAT21__AUD4_TXD 0x110b0
            MX6QDL_PAD_DISP0_DAT22__AUD4_TXFS  0x130b0
            MX6QDL_PAD_DISP0_DAT23__AUD4_RXD  0x130b0
        >;
    };
};

};
2016-05-09 19:21 GMT+02:00 Caleb Crome caleb@crome.org:
...
On Mon, May 9, 2016 at 4:17 AM, nick83ola nick83ola@gmail.com wrote:
...
Dear Alsa, Caleb and Arnaud
I need to output an i2s master stream from my IMX6 solo board
my board have this configuration for sound: (it have an sgtl5000 codec
not
on module, but on dev board)
==========================================================================
sound {
        compatible = "fsl,imx6q-icore-sgtl5000",
                 "fsl,imx-audio-sgtl5000";
        model = "imx6q-icore-sgtl5000";
        ssi-controller = <&ssi1>;
        audio-codec = <&codec>;
        audio-routing =
           "MIC_IN", "Mic Jack",
            "Mic Jack", "Mic Bias",
            "Headphone Jack", "HP_OUT";
        mux-int-port = <2>;
        mux-ext-port = <4>;
    };
&ssi1 {
    fsl,mode = "i2s-master";
    status = "okay";
};
&audmux {
    pinctrl-names = "default";
    pinctrl-0 = <&pinctrl_audmux_4>;
    status = "okay";
};
&iomuxc {
    audmux {
        pinctrl_audmux_4: audmux-4 {
            fsl,pins = <
                MX6QDL_PAD_DISP0_DAT20__AUD4_TXC  0x130b0
                MX6QDL_PAD_DISP0_DAT21__AUD4_TXD 0x110b0
                MX6QDL_PAD_DISP0_DAT22__AUD4_TXFS  0x130b0
                MX6QDL_PAD_DISP0_DAT23__AUD4_RXD  0x130b0
            >;
       };
  };
==========================================================================
I need to output i2s on the same port as sgtl5000, bit in master mode
i've patched sound/soc/soc-utils.c to add support for dts as per arnaud
patch
==========================================================================
#ifdef CONFIG_OF
static const struct of_device_id soc_dummy_ids[] = {
    { .compatible = "linux,snd-soc-dummy", },
    { }
};
MODULE_DEVICE_TABLE(of, soc_dummy_ids);
#endif
...
.of_match_table = of_match_ptr(soc_dummy_ids),
==========================================================================
--> (it is necessary?????? or can I use simple audio card??????
-> i've put this in my dts file
==========================================================================
&audmux {
    ssi3 {
        fsl,audmux-port = <6>;
        fsl,port-config = <
             0x00000000
             IMX_AUDMUX_V2_PDCR_RXDSEL(4)
         >;
     };
 port5 {
     fsl,audmux-port = <4>;
     fsl,port-config = <
         (IMX_AUDMUX_V2_PTCR_TFSDIR |
         IMX_AUDMUX_V2_PTCR_TFSEL(6) |
         IMX_AUDMUX_V2_PTCR_TCLKDIR |
         IMX_AUDMUX_V2_PTCR_TCSEL(6))
         IMX_AUDMUX_V2_PDCR_RXDSEL(6)
     >;
 };

};
&ssi1 {
     status = "disabled";
};
&ssi2 {
     status = "disabled";
};
&ssi3 {
     status = "okay";
     #sound-dai-cells = <0>;
     // select the a clock parent suitable for 48000 Hz sampling rate
     assigned-clocks = <&clks IMX6QDL_CLK_SSI3_SEL>, <&clks
IMX6QDL_CLK_SSI3>;
     assigned-clock-parents = <&clks IMX6QDL_CLK_PLL4_AUDIO_DIV>;
     assigned-clock-rates = <0>, <49152000>;
};
/ {
    model = "Engicam i.CoreM6 DualLite/Solo starterkit";
    compatible = "fsl,imx6-icore", "fsl,imx6dl";
sound{
 status = "disabled";
};

sound-itel {
    compatible = "simple-audio-card";
    simple-audio-card,name = "test";
    simple-audio-card,format="dsp_a";
    simple-audio-card,frame-master = <&sound2_ssi>;
    simple-audio-card,bitclock-master = <&sound2_ssi>;
    sound2_ssi: simple-audio-card,cpu {
        sound-dai = <&ssi3>;
        system-clock-frequency = <1536000>;
        dai-tdm-slot-num = <2>;
        dai-tdm-slot-width = <16>;
    };
};

};
==========================================================================
here's my log
/sound-itel/simple-audio-card,cpu: arguments longer than property
asoc-simple-card sound-itel.31: parse error -22
asoc-simple-card: probe of sound-itel.31 failed with error -22
Hi Nikola,
   Here is my working setup for a wandboard with no i2c codecs.
https://github.com/ccrome/linux-caleb-dev/blob/v4.5-caleb-wandboard/arch/arm...
You need to be sure to set up the audmux right.    I'm not sure with
that old kernel if everything with audmux works right or not -- I
haven't tested it.
That should get you pretty close to what you need for your board I
suspect.
That branch (v4.5-caleb-wandboard) will build and run the SSI3 port on
AUD5 port, with the mx6 in master mode.  And, with all arnaud's
patches (included already in that repo), it will actually be robust.
-caleb
...
2016-05-06 17:38 GMT+02:00 Caleb Crome caleb@crome.org:
...
Hi there,
   Arnaud had a neat patch here that lets you set up a dummy sound
card from the DTS.
http://mailman.alsa-project.org/pipermail/alsa-devel/2015-November/100896.ht...
With that patch, you can set up your DTS to simply start streaming, no
codec or anything required, which should work for a codec with no I2C.
Hope that helps,
  -Caleb
On Thu, May 5, 2016 at 12:56 PM, nick83ola nick83ola@gmail.com
wrote:
...
Hello Alsa dev!
Anyone have an example of an i2s only driver for imx6 solo? I need a
driver
without i2c....
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--
P.S. Le informazioni trasmesse attraverso la presente comunicazione sono
di esclusiva
spettanza dell'effettivo destinatario. Nel caso in cui le stesse
raggiungessero, per
qualunque motivo, soggetti non interessati, questi ultimi vorranno darne
immediata
notizia al mittente. In ogni caso, eventuali soggetti diversi dai
legittimi destinatari
della presente comunicazione e dei dati contenuti negli allegati, possono
essere
sanzionati ai sensi del T.U. sul trattamento dei dati personali d.lgs.
196/2003, sia ai
sensi dell'art. 616 del Codice Penale che disciplina la violazione del
segreto sulla
corrispondenza.
--
P.S. Le informazioni trasmesse attraverso la presente comunicazione sono di
esclusiva
spettanza dell'effettivo destinatario. Nel caso in cui le stesse
raggiungessero, per
qualunque motivo, soggetti non interessati, questi ultimi vorranno darne
immediata
notizia al mittente. In ogni caso, eventuali soggetti diversi dai legittimi
destinatari
della presente comunicazione e dei dati contenuti negli allegati, possono
essere
sanzionati ai sensi del T.U. sul trattamento dei dati personali d.lgs.
196/2003, sia ai
sensi dell'art. 616 del Codice Penale che disciplina la violazione del
segreto sulla
corrispondenza.