AM6548: No RHPOUT when aplay stereo sound

Hi Kenn,

Give me a day/two to respond back, as the codec you are using is gone obsolete, I will check internally and get back.

In the meantime, did you see the same behavior if you change it to LOUT and ROUT (Lineout instead of headphone)?

Also, if you can provide the register dumps in order to debug.

Best Regards,

Suren

Thanks, Suren，

I had changed it to LOUT and ROUT, but the result is the same, and  also: no right channel data on AXR0 line when FS signal stay high

can you provide us with the exact register address you want?

Thanks

Kenn

Hi Kun

Can you offer amixer log with me?

Hi, Shenghao Ding

root@am65xx-evm:~# amixer scontrols
Simple mixer control 'Sidetone',0
Simple mixer control 'Line',0
Simple mixer control 'Line Input',0
Simple mixer control 'Mic',0
Simple mixer control 'Mic Booster',0
Simple mixer control 'Mic Input',0
Simple mixer control 'Playback De-emphasis',0
Simple mixer control 'Digital',0
Simple mixer control 'Output Mixer',0
Simple mixer control 'Output Mixer Line Bypass',0
Simple mixer control 'Output Mixer Mic Sidetone',0
root@am65xx-evm:~# dmesg | grep amixer
root@am65xx-evm:~# [ 129.704289] Initializing XFRM netlink socket

root@am65xx-evm:~# amixer scontents
Simple mixer control 'Sidetone',0
Capabilities: volume volume-joined
Playback channels: Mono
Capture channels: Mono
Limits: 0 - 4
Mono: 3 [75%] [-9.00dB]
Simple mixer control 'Line',0
Capabilities: cswitch cswitch-joined cswitch-exclusive
Capture exclusive group: 0
Capture channels: Mono
Mono: Capture [off]
Simple mixer control 'Line Input',0
Capabilities: volume pswitch
Playback channels: Front Left - Front Right
Capture channels: Front Left - Front Right
Limits: 0 - 31
Front Left: 23 [74%] [0.00dB] Playback [off]
Front Right: 23 [74%] [0.00dB] Playback [off]
Simple mixer control 'Mic',0
Capabilities: cswitch cswitch-joined cswitch-exclusive
Capture exclusive group: 0
Capture channels: Mono
Mono: Capture [on]
Simple mixer control 'Mic Booster',0
Capabilities: pswitch pswitch-joined
Playback channels: Mono
Mono: Playback [off]
Simple mixer control 'Mic Input',0
Capabilities: pswitch pswitch-joined
Playback channels: Mono
Mono: Playback [on]
Simple mixer control 'Playback De-emphasis',0
Capabilities: enum
Items: 'None' '32Khz' '44.1Khz' '48Khz'
Item0: '44.1Khz'
Simple mixer control 'Digital',0
Capabilities: pvolume pswitch pswitch-joined
Playback channels: Front Left - Front Right
Limits: Playback 0 - 127
Mono:
Front Left: Playback 112 [88%] [-9.00dB] [on]
Front Right: Playback 112 [88%] [-9.00dB] [on]
Simple mixer control 'Output Mixer',0
Capabilities: pswitch pswitch-joined
Playback channels: Mono
Mono: Playback [on]
Simple mixer control 'Output Mixer Line Bypass',0
Capabilities: pswitch pswitch-joined
Playback channels: Mono
Mono: Playback [off]
Simple mixer control 'Output Mixer Mic Sidetone',0
Capabilities: pswitch pswitch-joined
Playback channels: Mono
Mono: Playback [off]


root@am65xx-evm:~# amixer controls
numid=3,iface=MIXER,name='Line Input Switch'
numid=4,iface=MIXER,name='Line Input Volume'
numid=6,iface=MIXER,name='Mic Booster Switch'
numid=5,iface=MIXER,name='Mic Input Switch'
numid=9,iface=MIXER,name='Capture Source'
numid=8,iface=MIXER,name='Playback De-emphasis'
numid=2,iface=MIXER,name='Digital Playback Switch'
numid=1,iface=MIXER,name='Digital Playback Volume'
numid=10,iface=MIXER,name='Output Mixer Line Bypass Switch'
numid=11,iface=MIXER,name='Output Mixer Mic Sidetone Switch'
numid=12,iface=MIXER,name='Output Mixer Playback Switch'
numid=7,iface=MIXER,name='Sidetone Volume'


root@am65xx-evm:~# amixer contents
numid=3,iface=MIXER,name='Line Input Switch'
; type=BOOLEAN,access=rw------,values=2
: values=off,off
numid=4,iface=MIXER,name='Line Input Volume'
; type=INTEGER,access=rw---R--,values=2,min=0,max=31,step=0
: values=23,23
| dBscale-min=-17.25dB,step=0.75dB,mute=0
numid=6,iface=MIXER,name='Mic Booster Switch'
; type=BOOLEAN,access=rw------,values=1
: values=off
numid=5,iface=MIXER,name='Mic Input Switch'
; type=BOOLEAN,access=rw------,values=1
: values=on
numid=9,iface=MIXER,name='Capture Source'
; type=ENUMERATED,access=rw------,values=1,items=2
; Item #0 'Line'
; Item #1 'Mic'
: values=1
numid=8,iface=MIXER,name='Playback De-emphasis'
; type=ENUMERATED,access=rw------,values=1,items=4
; Item #0 'None'
; Item #1 '32Khz'
; Item #2 '44.1Khz'
; Item #3 '48Khz'
: values=2
numid=2,iface=MIXER,name='Digital Playback Switch'
; type=BOOLEAN,access=rw------,values=1
: values=on
numid=1,iface=MIXER,name='Digital Playback Volume'
; type=INTEGER,access=rw---R--,values=2,min=0,max=127,step=0
: values=112,112
| dBscale-min=-121.00dB,step=1.00dB,mute=0
numid=10,iface=MIXER,name='Output Mixer Line Bypass Switch'
; type=BOOLEAN,access=rw------,values=1
: values=off
numid=11,iface=MIXER,name='Output Mixer Mic Sidetone Switch'
; type=BOOLEAN,access=rw------,values=1
: values=off
numid=12,iface=MIXER,name='Output Mixer Playback Switch'
; type=BOOLEAN,access=rw------,values=1
: values=on
numid=7,iface=MIXER,name='Sidetone Volume'
; type=INTEGER,access=rw---R--,values=1,min=0,max=4,step=0
: values=3
| dBscale-min=-18.00dB,step=3.00dB,mute=0

are these info enough?

Kindly use amixer to set output to stereo instead of mono.

Hi, Shenghao Ding

I tried to change the value of " Output Mixer", but it didn't work.

How to use amixer to set output to stereo instead of mono?  is there a document about it? 

I also felt strange that tlv320aic23.c indicate its minimal playback channels = 2, but actually, it is Mono mode， what's wrong with it?

Thanks

Kenn

Kindly dump the register to me.

Have you set the amixer before aplay?

Thanks, Shenghao Ding

Yes, I set the amixer before aplay,  but I didn't find the right amixer command to configure it to work in stereo mode, it seemed no simple control or control to configure stereo mode, or it was just because I didn't know.

By the way, I can use devmem2 to dump some related Mcasp registers, but I don't know how to dump related registers on codec tlv320aic23, I had tried to use I2C read command to read its register, but the system indicated that the I2C device was occupied, can you tell us other methods to dump codec's registers?

MCASP_GBLCTL

root@am65xx-evm:~# devmem2 0x02B10044
/dev/mem opened.
Memory mapped at address 0xffff9d3c0000.
Read at address 0x02B10044 (0xffff9d3c0044): 0x00000000

MCASP_AMUTE

root@am65xx-evm:~# devmem2 0x02B10048
/dev/mem opened.
Memory mapped at address 0xffffbdb50000.
Read at address 0x02B10048 (0xffffbdb50048): 0x00000000

MCASP_PID

root@am65xx-evm:~# devmem2 0x02B10000
/dev/mem opened.
Memory mapped at address 0xffff82b50000.
Read at address 0x02B10000 (0xffff82b50000): 0x44307B02

MCASP_PFUNC

root@am65xx-evm:~# devmem2 0x02B10010
/dev/mem opened.
Memory mapped at address 0xffff88990000.
Read at address  0x02B10010 (0xffff88990010): 0x00000000

MCASP_XRSRCTL0

root@am65xx-evm:~# devmem2 0x02B10180
/dev/mem opened.
Memory mapped at address 0xffff99f90000.
Read at address  0x02B10180 (0xffff99f90180): 0x00000019

MCASP_TXSTAT

root@am65xx-evm:~# devmem2 0x02B100C0
/dev/mem opened.
Memory mapped at address 0xffff95a10000.
Read at address  0x02B100C0 (0xffff95a100c0): 0x0000010C

MCASP_GBLCTLX

root@am65xx-evm:~# devmem2 0x02B100A0
/dev/mem opened.
Memory mapped at address 0xffff97e30000.
Read at address  0x02B100A0 (0xffff97e300a0): 0x00000000

MCASP_GBLCTLR

root@am65xx-evm:~# devmem2 0x02B10060
/dev/mem opened.
Memory mapped at address 0xffff88b30000.
Read at address  0x02B10060 (0xffff88b30060): 0x00000000

MCASP_TXMASK
root@am65xx-ghmi:~# devmem2 0x02B100A4
/dev/mem opened.
Memory mapped at address 0xffffb64a0000.
Read at address  0x02B100A4 (0xffffb64a00a4): 0x0000FFFF

MCASP_TXFMT
root@am65xx-ghmi:~# devmem2 0x02B100A8
/dev/mem opened.
Memory mapped at address 0xffffa09a0000.
Read at address  0x02B100A8 (0xffffa09a00a8): 0x00008074

MCASP_TXFMCTL
root@am65xx-ghmi:~# devmem2 0x02B100AC
/dev/mem opened.
Memory mapped at address 0xffff991b0000.
Read at address  0x02B100AC (0xffff991b00ac): 0x00000100

MCASP_ACLKXCTL
root@am65xx-evm:~# devmem2 0x02B100B0
/dev/mem opened.
Memory mapped at address 0xffffb8490000.
Read at address  0x02B100B0 (0xffffb84900b0): 0x00180000

MCASP_AHCLKXCTL
root@am65xx-evm:~# devmem2 0x02B100B4
/dev/mem opened.
Memory mapped at address 0xffff93dd0000.
Read at address  0x02B100B4 (0xffff93dd00b4): 0x00000000

Thanks

Kenn

#i2cdump -y -f 0 4c
0 is i2c bus no
4c is 7-bit i2c device address

Can you tell me the left amixer you used?

The am6528 is not sending data on right channel.

Make sure the driver and am6528 are configured to send stereo data.

Hi Kenn,

Can you also try changing the audio_format to dsp_b instead of i2s.

simple-audio-card,format = "i2s"; 

Best Regards

Suren

Thanks Shenghao Ding

I had tried the method you given, but it appeared error as follow:

root@am65xx-evm:/dev# i2cdump -y -f 3 0x1b
No size specified (using byte-data access)
[  380.890446] omap_i2c 2010000.i2c: Arbitration lost
     0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f    0123456789abcdef
00: XX [  383.921159] omap_i2c 2010000.i2c: controller timed out
XX [  383.941260] omap_i2c 2010000.i2c: Arbitration lost
XX [  386.993146] omap_i2c 2010000.i2c: controller timed out
XX [  387.021290] omap_i2c 2010000.i2c: Arbitration lost
XX [  390.065156] omap_i2c 2010000.i2c: controller timed out
XX [  390.085270] omap_i2c 2010000.i2c: Arbitration lost
XX [  393.137154] omap_i2c 2010000.i2c: controller timed out
XX [  393.165261] omap_i2c 2010000.i2c: Arbitration lost
XX [  396.209148] omap_i2c 2010000.i2c: controller timed out
XX [  396.229269] omap_i2c 2010000.i2c: Arbitration lost
XX [  399.281148] omap_i2c 2010000.i2c: controller timed out
XX [  399.309262] omap_i2c 2010000.i2c: Arbitration lost
XX [  402.353147] omap_i2c 2010000.i2c: controller timed out
XX [  402.381275] omap_i2c 2010000.i2c: Arbitration lost
XX [  405.425149] omap_i2c 2010000.i2c: controller timed out
XX    XXXXXXXXXXXXXXXX
10: [  405.453274] omap_i2c 2010000.i2c: Arbitration lost
XX [  408.497165] omap_i2c 2010000.i2c: controller timed out
XX [  408.525272] omap_i2c 2010000.i2c: Arbitration lost
XX [  411.569151] omap_i2c 2010000.i2c: controller timed out
XX [  411.597271] omap_i2c 2010000.i2c: Arbitration lost
XX [  414.641148] omap_i2c 2010000.i2c: controller timed out
XX [  414.661271] omap_i2c 2010000.i2c: Arbitration lost
XX [  417.713151] omap_i2c 2010000.i2c: controller timed out
XX [  417.741272] omap_i2c 2010000.i2c: Arbitration lost
XX [  420.785164] omap_i2c 2010000.i2c: controller timed out
XX [  420.813267] omap_i2c 2010000.i2c: Arbitration lost
XX [  423.857146] omap_i2c 2010000.i2c: controller timed out
XX [  423.877271] omap_i2c 2010000.i2c: Arbitration lost
XX [  426.929153] omap_i2c 2010000.i2c: controller timed out
XX [  426.957270] omap_i2c 2010000.i2c: Arbitration lost
XX [  430.001177] omap_i2c 2010000.i2c: controller timed out
XX    XXXXXXXXXXXXXXXX
20: [  430.029276] omap_i2c 2010000.i2c: Arbitration lost
XX [  433.073154] omap_i2c 2010000.i2c: controller timed out
XX [  433.093274] omap_i2c 2010000.i2c: Arbitration lost
XX [  436.145150] omap_i2c 2010000.i2c: controller timed out
XX [  436.173271] omap_i2c 2010000.i2c: Arbitration lost
XX [  439.217148] omap_i2c 2010000.i2c: controller timed out
XX [  439.245270] omap_i2c 2010000.i2c: Arbitration lost
XX [  442.289153] omap_i2c 2010000.i2c: controller timed out
XX [  442.309272] omap_i2c 2010000.i2c: Arbitration lost
XX [  445.361148] omap_i2c 2010000.i2c: controller timed out
XX [  445.389290] omap_i2c 2010000.i2c: Arbitration lost
XX [  448.433149] omap_i2c 2010000.i2c: controller timed out
XX [  448.461267] omap_i2c 2010000.i2c: Arbitration lost
XX [  451.505154] omap_i2c 2010000.i2c: controller timed out
XX [  451.533267] omap_i2c 2010000.i2c: Arbitration lost
XX [  454.577164] omap_i2c 2010000.i2c: controller timed out
XX    XXXXXXXXXXXXXXXX
30: [  454.605271] omap_i2c 2010000.i2c: Arbitration lost
XX [  457.649153] omap_i2c 2010000.i2c: controller timed out
XX [  457.677268] omap_i2c 2010000.i2c: Arbitration lost
XX [  460.721153] omap_i2c 2010000.i2c: controller timed out
XX [  460.749275] omap_i2c 2010000.i2c: Arbitration lost
XX [  463.793154] omap_i2c 2010000.i2c: controller timed out
XX [  463.821263] omap_i2c 2010000.i2c: Arbitration lost
XX [  466.865149] omap_i2c 2010000.i2c: controller timed out
XX [  466.885270] omap_i2c 2010000.i2c: Arbitration lost
XX [  469.937150] omap_i2c 2010000.i2c: controller timed out
XX [  469.957273] omap_i2c 2010000.i2c: Arbitration lost
XX [  473.009151] omap_i2c 2010000.i2c: controller timed out
XX [  473.037267] omap_i2c 2010000.i2c: Arbitration lost
XX [  476.081154] omap_i2c 2010000.i2c: controller timed out
XX [  476.109264] omap_i2c 2010000.i2c: Arbitration lost
XX [  479.153160] omap_i2c 2010000.i2c: controller timed out
XX    XXXXXXXXXXXXXXXX
40: [  479.181266] omap_i2c 2010000.i2c: Arbitration lost
........

XX    XXXXXXXXXXXXXXXX
f0: [  749.517281] omap_i2c 2010000.i2c: Arbitration lost
XX [  752.561162] omap_i2c 2010000.i2c: controller timed out
XX [  752.589267] omap_i2c 2010000.i2c: Arbitration lost
XX [  755.633178] omap_i2c 2010000.i2c: controller timed out
XX [  755.653278] omap_i2c 2010000.i2c: Arbitration lost
XX [  758.705150] omap_i2c 2010000.i2c: controller timed out
XX [  758.733270] omap_i2c 2010000.i2c: Arbitration lost
XX [  761.777148] omap_i2c 2010000.i2c: controller timed out
XX [  761.805269] omap_i2c 2010000.i2c: Arbitration lost
XX [  764.849147] omap_i2c 2010000.i2c: controller timed out
XX [  764.877262] omap_i2c 2010000.i2c: Arbitration lost
XX [  767.921148] omap_i2c 2010000.i2c: controller timed out
XX [  767.949268] omap_i2c 2010000.i2c: Arbitration lost
XX [  770.993160] omap_i2c 2010000.i2c: controller timed out
XX [  771.021263] omap_i2c 2010000.i2c: Arbitration lost
XX [  774.065148] omap_i2c 2010000.i2c: controller timed out
XX    XXXXXXXXXXXXXXXX

is it a timing issue? do we need to check I2C timing issue? there are also other two devices on this i2c bus, these two devices works fine, it's strange!

Thanks

Kenn

pdjuandi said:

The am6528 is not sending data on right channel.

Make sure the driver and am6528 are configured to send stereo data.

Thanks pdjuandi, 

How to make sure that am6528 are configured to send stereo data? the only setting in dts I found is to set its mode in "i2s", now its output is mono because of waveform and amixer's result,  can you tell me the other setting about this stereo output?

Thanks

Kenn

Hello Suren

Suren Porwar said:

Can you also try changing the audio_format to dsp_b instead of i2s.

simple-audio-card,format = "i2s"; 

 Its rhpout will output noise when I change its mode from "i2s" to "dsp_b", but lhpout output is good .

Thanks

Kenn

Yes, it is impossible. Other i2c devices can work fine, while the code can't work.

II check the dts setting for the code, it is set as the master. Pls check whether the audio data from AP to codec is stereo.

Shenghao Ding said:

II check the dts setting for the code, it is set as the master. Pls check whether the audio data from AP to codec is stereo.

In I2S mode, when FS signal stay high, AXR0 signal should output  Right channel data, but the signal on our board didn't have any data on AXR0 at that time, you can see the waveform on my first post.

Thanks

Kenn

I'm not familiar with AM6528 or the driver, from codec point of view the data coming in on right channel is empty.

Suren/Shenghao might be able to direct you.

Can you share the schematic on the connection between tlv320aic23 and AM6528?

Thanks Shenghao Ding!

Kenn

Confirm from you that, the signal is from SDIN, right?

the signal from DIN， SDIN is I2C data pin。

Have you measured the waveform on DIN pin with scope?

DIN is the AXR0 signal， you can see this waveform in my first post.

pdjuandi said:

I'm not familiar with AM6528 or the driver, from codec point of view the data coming in on right channel is empty.

Suren/Shenghao might be able to direct you.

Thanks a lot, pdjuandi

In the wave form, there's no signal in the right channel of DIN. The right channel of audio source is no signal, so why do you want RHPOUT to generate the signal?

our product needs stereo output, now only the left channel has sound, it is unacceptable.

is it a bug for I2S mode on am6528?  I didn't find it in the " known issues " from the release note.

Thanks

Kenn

Can you share the wav file you tested?

it's not the problem with the wav file, I tested it in my old product(am335x), and that's fine, and I also downloaded the other stereo wav file from the internet, the same behaviour.

Hi, Shenghao Ding

why is there no rhpout data in I2S mode? it's a bug or not.

Thanks

Kenn

Kindly consult the platform vendor on the no signal from the right channel of the audio source.

Shenghao Ding said:

Kindly consult the platform vendor on the no signal from the right channel of the audio source.

 I don't understand what's your means about " the platform vendor", am6528 and tlv320aic23 are both from TI, right? or you found that the audio source(wave file) had a problem?

Thanks

I belong to LPA, focus on audio codec support. So far, your question is to ask for the am6528 support to help fix the issue of audio data only in left channel, none in right channel. After that fixing, we can go on check no sound in RHPOUT.

Ok, got it， thank you for your info.

Hi  Kenn,

Can you point us which file are you referring to create the dts file? Please refer the below link for reference:

https://lore.kernel.org/linux-arm-kernel/9d22e2a9-ed36-8687-cc99-e0798bac4d68@ti.com/T/

Also, can you take the oscilloscope waveform for Data Out and Frame Sync on AM335x, where audio seems to be working fine along with McASP register dumps.

As far as I know, MCASP on AM6548 supports dsp_b format only. Please share the dts file with modifying to dsp_b format as simple-audio-format and share us the oscilloscope waveforms.

Best Regards,

Suren

Hi, Suren

Thanks for your info, we had confirmed the content of the link you provided.

Suren Porwar said:

Also, can you take the oscilloscope waveform for Data Out and Frame Sync on AM335x, where audio seems to be working fine along with McASP register dumps.

C1-BCLK; C2-AXR0;C3-FS

Suren Porwar said:

Please share the dts file with modifying to dsp_b format as simple-audio-format and share us the oscilloscope waveforms.

sound {
                compatible = "simple-audio-card";
                simple-audio-card,name = "AM65x-GHMI+";
                simple-audio-card,widgets =
                        "Headphone", "Headphone Jack";
                simple-audio-card,routing =
                        "Headphone Jack",       "LHPOUT",
                        "Headphone Jack",       "RHPOUT";

                simple-audio-card,format = "dsp_b";
                simple-audio-card,bitclock-master = <&sound_master>;
                simple-audio-card,frame-master = <&sound_master>;
                simple-audio-card,bitclock-inversion;

                simple-audio-card,cpu {
                        sound-dai = <&mcasp1>;
                };

                sound_master: simple-audio-card,codec {
                        sound-dai = <&tlv320aic23>;
                        system-clock-frequency = <12000000>;
                };
        };


.........

mcasp1_pins: mcasp1-pins {
                pinctrl-single,pins = <
                        AM65X_IOPAD(0x0244, PIN_INPUT_PULLDOWN, 5) /* (AB28) PRG0_PRU1_GPO0.MCASP1_ACLKX */
                        AM65X_IOPAD(0x0248, PIN_INPUT_PULLDOWN, 5) /* (AC28) PRG0_PRU1_GPO1.MCASP1_AFSX */
                        AM65X_IOPAD(0x0254, PIN_INPUT_PULLDOWN, 5) /* (AA25) PRG0_PRU1_GPO4.MCASP1_AXR0 */
                >;
        };

.........

tlv320aic23: tlv320aic23@1b {
                #sound-dai-cells = <0>;
                compatible = "ti,tlv320aic23";
                reg = <0x1b>;
                status = "okay";

                /* Regulators 
                AVDD-supply = <&codec_vcc_3v3>;
                IOVDD-supply = <&gp_vcc_1v8>;
                DRVDD-supply = <&codec_vcc_3v3>;
                DVDD-supply = <&gp_vcc_1v8>;*/
        };
........

&mcasp1 {
        #sound-dai-cells = <0>;
        status = "okay";

        pinctrl-names = "default";
        pinctrl-0 = <&mcasp1_pins>;
        op-mode = <0>;          /* MCASP_IIS_MODE */
        tdm-slots = <2>;
        /* 16 serializers */
        /* num-serializer = <10>;*/
        serial-dir = <  /* 0: INACTIVE, 1: TX, 2: RX */
                1 0 0 0
                0 0 0 0
                0 0
        >;
        tx-num-evt = <32>;
        rx-num-evt = <32>;
};

C1-FS;C2-AXR0

Related Mcasp1 and codec's register on am335x platform list as follow:

root@am335x-evm:~# devmem2 0x4803C0A0
/dev/mem opened.
Memory mapped at address 0xb6fdc000.
Read at address  0x4803C0A0 (0xb6fdc0a0): 0x00000000
root@am335x-evm:~# devmem2 0x4803C0A4
/dev/mem opened.
Memory mapped at address 0xb6f26000.
Read at address  0x4803C0A4 (0xb6f260a4): 0x00000000
root@am335x-evm:~# devmem2 0x4803C0A8
/dev/mem opened.
Memory mapped at address 0xb6f6c000.
Read at address  0x4803C0A8 (0xb6f6c0a8): 0x00000000
root@am335x-evm:~# devmem2 0x4803C0AC
/dev/mem opened.
Memory mapped at address 0xb6fce000.
Read at address  0x4803C0AC (0xb6fce0ac): 0x00000000
root@am335x-evm:~# devmem2 0x4803C0B0
/dev/mem opened.
Memory mapped at address 0xb6f45000.
Read at address  0x4803C0B0 (0xb6f450b0): 0x00000060
root@am335x-evm:~# devmem2 0x4803C0B4
/dev/mem opened.
Memory mapped at address 0xb6fbc000.
Read at address  0x4803C0B4 (0xb6fbc0b4): 0x00008000
root@am335x-evm:~# devmem2 0x4803C0B8
/dev/mem opened.
Memory mapped at address 0xb6f70000.
Read at address  0x4803C0B8 (0xb6f700b8): 0x00000000
root@am335x-evm:~# devmem2 0x4803C0BC
/dev/mem opened.
Memory mapped at address 0xb6f3a000.
Read at address  0x4803C0BC (0xb6f3a0bc): 0x00000000
root@am335x-evm:~# devmem2 0x4803C0C0
/dev/mem opened.
Memory mapped at address 0xb6f2a000.
Read at address  0x4803C0C0 (0xb6f2a0c0): 0x0000010C
root@am335x-evm:~# devmem2 0x4803C0C4
/dev/mem opened.
Memory mapped at address 0xb6f10000.
Read at address  0x4803C0C4 (0xb6f100c4): 0x0000017F
root@am335x-evm:~# devmem2 0x4803C0C8
/dev/mem opened.
Memory mapped at address 0xb6fd6000.
Read at address  0x4803C0C8 (0xb6fd60c8): 0x00000000
root@am335x-evm:~# devmem2 0x4803C0CC
/dev/mem opened.
Memory mapped at address 0xb6f32000.
Read at address  0x4803C0CC (0xb6f320cc): 0x00000000

--------------------------------------------------------------------
root@am335x-evm:~# i2cdump -y -f 0 0x1b
No size specified (using byte-data access)[   85.629665] omap_i2c 44e0b000.i2c: Arbitration lost

     0  1  2  3  4  5  6  7  8  9  a  b  c  d [   85.638401] omap_i2c 44e0b000.i2c: Arbitration lost
 e  f    0123456789abcdef
00: XX XX [   85.647486] omap_i2c 44e0b000.i2c: Arbitration lost
XX [   85.655923] omap_i2c 44e0b000.i2c: Arbitration lost
XX [   85.673395] omap_i2c 44e0b000.i2c: Arbitration lost
XX [   85.693442] omap_i2c 44e0b000.i2c: Arbitration lost
XX [   85.713397] omap_i2c 44e0b000.i2c: Arbitration lost
XX [   85.733462] omap_i2c 44e0b000.i2c: Arbitration lost
XX [   85.753382] omap_i2c 44e0b000.i2c: Arbitration lost
XX [   85.773427] omap_i2c 44e0b000.i2c: Arbitration lost
XX [   85.793385] omap_i2c 44e0b000.i2c: Arbitration lost
XX [   85.813428] omap_i2c 44e0b000.i2c: Arbitration lost
XX [   85.833385] omap_i2c 44e0b000.i2c: Arbitration lost
XX [   85.853411] omap_i2c 44e0b000.i2c: Arbitration lost
XX [   85.873382] omap_i2c 44e0b000.i2c: Arbitration lost
XX [   85.893415] omap_i2c 44e0b000.i2c: Arbitration lost
XX    XXXXXXXXXXXXXXXX
10: [   85.913465] omap_i2c 44e0b000.i2c: Arbitration lost
XX [   85.933424] omap_i2c 44e0b000.i2c: Arbitration lost
XX [   85.953373] omap_i2c 44e0b000.i2c: Arbitration lost
XX [   85.973431] omap_i2c 44e0b000.i2c: Arbitration lost
XX [   85.993383] omap_i2c 44e0b000.i2c: Arbitration lost
XX [   86.013427] omap_i2c 44e0b000.i2c: Arbitration lost
XX [   86.033377] omap_i2c 44e0b000.i2c: Arbitration lost
XX [   86.053453] omap_i2c 44e0b000.i2c: Arbitration lost
XX [   86.073394] omap_i2c 44e0b000.i2c: Arbitration lost
XX [   86.093437] omap_i2c 44e0b000.i2c: Arbitration lost
XX [   86.113391] omap_i2c 44e0b000.i2c: Arbitration lost
XX [   86.133426] omap_i2c 44e0b000.i2c: Arbitration lost
XX [   86.153372] omap_i2c 44e0b000.i2c: Arbitration lost
XX [   86.173436] omap_i2c 44e0b000.i2c: Arbitration lost
XX [   86.193384] omap_i2c 44e0b000.i2c: Arbitration lost
XX [   86.213429] omap_i2c 44e0b000.i2c: Arbitration lost
XX    XXXXXXXXXXXXXXXX
20: [   86.233432] omap_i2c 44e0b000.i2c: Arbitration lost
XX [   86.253416] omap_i2c 44e0b000.i2c: Arbitration lost
XX [   86.273380] omap_i2c 44e0b000.i2c: Arbitration lost
XX [   86.293419] omap_i2c 44e0b000.i2c: Arbitration lost
XX [   86.313388] omap_i2c 44e0b000.i2c: Arbitration lost
XX [   86.333425] omap_i2c 44e0b000.i2c: Arbitration lost
XX [   86.353378] omap_i2c 44e0b000.i2c: Arbitration lost
XX [   86.373429] omap_i2c 44e0b000.i2c: Arbitration lost
XX [   86.393393] omap_i2c 44e0b000.i2c: Arbitration lost
XX [   86.413428] omap_i2c 44e0b000.i2c: Arbitration lost
XX [   86.433381] omap_i2c 44e0b000.i2c: Arbitration lost
XX [   86.453415] omap_i2c 44e0b000.i2c: Arbitration lost
XX [   86.473381] omap_i2c 44e0b000.i2c: Arbitration lost
XX [   86.493423] omap_i2c 44e0b000.i2c: Arbitration lost
XX [   86.513389] omap_i2c 44e0b000.i2c: Arbitration lost
XX [   86.533416] omap_i2c 44e0b000.i2c: Arbitration lost
XX    XXXXXXXXXXXXXXXX
30: [   86.553419] omap_i2c 44e0b000.i2c: Arbitration lost
XX [   86.573424] omap_i2c 44e0b000.i2c: Arbitration lost
XX [   86.593398] omap_i2c 44e0b000.i2c: Arbitration lost
XX [   86.613439] omap_i2c 44e0b000.i2c: Arbitration lost
XX [   86.618820] omap_i2c 44e0b000.i2c: Arbitration lost
XX [   86.643378] omap_i2c 44e0b000.i2c: Arbitration lost
XX [   86.663393] omap_i2c 44e0b000.i2c: Arbitration lost
XX [   86.683372] omap_i2c 44e0b000.i2c: Arbitration lost
XX [   86.703383] omap_i2c 44e0b000.i2c: Arbitration lost
XX [   86.723443] omap_i2c 44e0b000.i2c: Arbitration lost
XX [   86.743397] omap_i2c 44e0b000.i2c: Arbitration lost
XX [   86.763387] omap_i2c 44e0b000.i2c: Arbitration lost
XX [   86.783383] omap_i2c 44e0b000.i2c: Arbitration lost
XX [   86.803378] omap_i2c 44e0b000.i2c: Arbitration lost
XX [   86.823383] omap_i2c 44e0b000.i2c: Arbitration lost
XX [   86.843374] omap_i2c 44e0b000.i2c: Arbitration lost
XX    XXXXXXXXXXXXXXXX
40: [   86.863437] omap_i2c 44e0b000.i2c: Arbitration lost
XX [   86.883373] omap_i2c 44e0b000.i2c: Arbitration lost
XX [   86.903374] omap_i2c 44e0b000.i2c: Arbitration lost
XX [   86.923381] omap_i2c 44e0b000.i2c: Arbitration lost
XX [   86.943385] omap_i2c 44e0b000.i2c: Arbitration lost
XX [   86.963383] omap_i2c 44e0b000.i2c: Arbitration lost
XX [   86.983379] omap_i2c 44e0b000.i2c: Arbitration lost
XX [   87.003378] omap_i2c 44e0b000.i2c: Arbitration lost
XX [   87.023384] omap_i2c 44e0b000.i2c: Arbitration lost
XX [   87.044138] omap_i2c 44e0b000.i2c: Arbitration lost
XX [   87.063397] omap_i2c 44e0b000.i2c: Arbitration lost
XX [   87.083375] omap_i2c 44e0b000.i2c: Arbitration lost
XX [   87.103376] omap_i2c 44e0b000.i2c: Arbitration lost
XX [   87.123631] omap_i2c 44e0b000.i2c: Arbitration lost
XX [   87.143385] omap_i2c 44e0b000.i2c: Arbitration lost
XX [   87.163390] omap_i2c 44e0b000.i2c: Arbitration lost
XX    XXXXXXXXXXXXXXXX

Thanks

Kenn

Suren,

I compared the register dump of AM335x and AM654x, there are difference, not sure what is wrong in AM654x .dts configuration:

Hi Kenn,

I saw the MMR in McASP in your previous replies:

MCASP_TXFMCTL
root@am65xx-ghmi:~# devmem2 0x02B100AC
/dev/mem opened.
Memory mapped at address 0xffff991b0000.
Read at address 0x02B100AC (0xffff991b00ac): 0x00000100

From the TRM:  Section 12.5.4.2.3

Frame sync mode - the appropriate frame sync generation pattern for the selected transfer mode is defined in the MCASP_TXFMCTL[15-7] XMOD bit field, as follows:

– For DIT mode (384 slots) - MCASP_TXFMCTL[15-7] XMOD = 0x180

– For I2S mode (2 TDM slots) - MCASP_TXFMCTL[15-7] XMOD = 0x2

– For TDM mode (from 3 to 32 TDM slots) - MCASP_TXFMCTL[15-7] XMOD bit field set in range 0x3 - 0x20

Also XTDM should have 0x00000003 in  it to indicate transmit is active in both slots.

You can also check XSTAT for any error bits set.

If you were to write the registers with correct values, can you confirm playing the output in stereo?

Best Regards,

Suren 

Hi, Suren

The current value of MCASP_TXFMCTL is 0x00000100, its MCASP_TXFMCTL[15-7] XMOD = 0x2 (I2S mode), do you want us to configure it to MCASP_TXFMCTL[15-7] XMOD = 0x3(3 TDM slots)?  change the value of MCASP_TXFMCTL to 0x00000180?

if yes, I didn't understand your intention. lhpout and rhpout need two slots for transferring data, what's the usage of the rest slot?

Thanks

Kenn

With the help of Tony, we configured the MCASP_TXTDM(0x02B100B8) register to the value of 0x00000003, but the rhpout is still noise.

Thanks

Kenn

I did same test on AM62-sk board. can here stereo, during play audio read codec register, it show codec is master. after audio ended, read codec register again, it return to default value. 

root@am62xx-evm:~# aplay -Dplughw:0,0 4426.test.wav&
[1] 504056
root@am62xx-evm:~# Playing WAVE '4426.test.wav' : Signed 16 bit Little Endian, Rate 44100 Hz, Stereo
root@am62xx-evm:~# i2cget -f 1 0x1b 8
WARNING! This program can confuse your I2C bus, cause data loss and worse!
I will read from device file /dev/i2c-1, chip address 0x1b, data address
0x08, using read byte data.
Continue? [Y/n] y
0xc0

root@am62xx-evm:~# i2cget -f 1 0x1b 9
WARNING! This program can confuse your I2C bus, cause data loss and worse!
I will read from device file /dev/i2c-1, chip address 0x1b, data address
0x09, using read byte data.
Continue? [Y/n] y
0x40

root@am62xx-evm:~# [ 4556.689706] ti-bcdma 485c0100.dma-controller: chan1 teardown timeout!
^C
[1]+ Done aplay -Dplughw:0,0 4426.test.wav
root@am62xx-evm:~# i2cget -f 1 0x1b 9
WARNING! This program can confuse your I2C bus, cause data loss and worse!
I will read from device file /dev/i2c-1, chip address 0x1b, data address
0x09, using read byte data.
Continue? [Y/n] y
0x00
root@am62xx-evm:~#

but can't read McASP registers, no matter from command line devmem2 or from CCS JTAG physical address view. Even read from M4, all are 0.

root@am62xx-evm:~#
root@am62xx-evm:~# devmem2 0x02b10000
/dev/mem opened.Unhandled Exception in EL3.
x30 = 0x000000009e780f88
x0 = 0x0000ffffcb3b89a0
x1 = 0x0000000000401030
x2 = 0x0000000000000008
x3 = 0x0000000000000000
x4 = 0x0000000000000000
x5 = 0x000000003353a2c9
x6 = 0x000000000000002e
x7 = 0x000000000000000a
x8 = 0x0000000000000040
x9 = 0xffffff80ffffffc8
x10 = 0x0000000000000000
x11 = 0x0000ffffcb3b8820
x12 = 0x000000000000000c
x13 = 0x0000000000000010
x14 = 0x0000000000000001
x15 = 0x0000000000000000
x16 = 0x0000000000412068
x17 = 0x0000ffff9c79ad58
x18 = 0x0000000000000000
x19 = 0x0000ffff9c8d1000
x20 = 0x0000000000001000
x21 = 0x0000000002b10000
x22 = 0x0000000000000002
x23 = 0x0000000000000003
x24 = 0x0000ffffcb3b89a0
x25 = 0x0000ffffcb3b8b68
x26 = 0x0000ffff9c8d1000
x27 = 0x0000000000412000
x28 = 0x0000000000000000
x29 = 0x0000ffffcb3b8930
scr_el3 = 0x000000000000073d
sctlr_el3 = 0x0000000030cd183f
cptr_el3 = 0x0000000000000000
tcr_el3 = 0x0000000080803520
daif = 0x00000000000002c0
mair_el3 = 0x00000000004404ff
spsr_el3 = 0x0000000060000000
elr_el3 = 0x0000000000400ab4
ttbr0_el3 = 0x000000009e7910c0
esr_el3 = 0x0000000092000010
far_el3 = 0x0000ffff9c8d1000
spsr_el1 = 0x0000000020000000
elr_el1 = 0x0000ffff9c7f83d0
spsr_abt = 0x0000000000000000
spsr_und = 0x0000000000000000
spsr_irq = 0x0000000000000000
spsr_fiq = 0x0000000000000000
sctlr_el1 = 0x0000000034d4d91d
actlr_el1 = 0x0000000000000000
cpacr_el1 = 0x0000000000300000
csselr_el1 = 0x0000000000000000
sp_el1 = 0xffff8000153dc000
esr_el1 = 0x0000000056000000
ttbr0_el1 = 0x000000008b916000
ttbr1_el1 = 0x1ef6000082eb9000
mair_el1 = 0x000c0400bb44ffff
amair_el1 = 0x0000000000000000
tcr_el1 = 0x00000032b5d03590
tpidr_el1 = 0xffff80006ec46000
tpidr_el0 = 0x0000ffff9c8a52f0
tpidrro_el0 = 0x0000000000000000
par_el1 = 0x0000000000000000
mpidr_el1 = 0x0000000080000000
afsr0_el1 = 0x0000000000000000
afsr1_el1 = 0x0000000000000000
contextidr_el1 = 0x0000000000000000
vbar_el1 = 0xffff800010010800
cntp_ctl_el0 = 0x0000000000000005
cntp_cval_el0 = 0x00000001e51eb6e0
cntv_ctl_el0 = 0x0000000000000000
cntv_cval_el0 = 0x0000000000000000
cntkctl_el1 = 0x00000000000000d6
sp_el0 = 0x0000ffffcb3b8930
isr_el1 = 0x0000000000000040
dacr32_el2 = 0x0000000000000000
ifsr32_el2 = 0x0000000000000000
cpuectlr_el1 = 0x0000000000000040
cpumerrsr_el1 = 0x0000000008000239
l2merrsr_el1 = 0x0000000010247508
cpuactlr_el1 = 0x00001000090ca000

Probed signals: BCLK, WCLK, DIN: it is burst format, there are 32bit of one frame.

put the dts of AM335x and AM654x in below for comparing, reminding they are using different driver of different version SDK.

AM335x:

 sound {

                        compatible = "ti,am33xx-evm-audio";

                        ti,model = "AM33xx_EVM";

                        ti,audio-codec = <&tlv320aic23>;

                        ti,mcasp-controller = <&mcasp1>;

                        ti,codec-clock-rate = <12000000>;

                        ti,audio-routing =

                                "Headphone Jack",       "HPLOUT",

                                "Headphone Jack",       "HPROUT";

                };

&mcasp1 {

                pinctrl-names = "default";

                pinctrl-0 = <&mcasp1_pins>;

                 status = "okay";

                 op-mode = <0>;          /* MCASP_IIS_MODE */

                tdm-slots = <2>;

                /* 16 serializer */

                serial-dir = <  /* 0: INACTIVE, 1: TX, 2: RX */

                        1 0 0 0

                >;

                tx-num-evt = <32>;

                rx-num-evt = <32>;

};

  tlv320aic23: tlv320aic23@1b {

                                compatible = "ti,tlv320aic23";

                                reg = <0x1b>;

                                status = "okay";

                                /* Regulators */

                                AVDD-supply = <&vaux2_reg>;

                                IOVDD-supply = <&vaux2_reg>;

                                DRVDD-supply = <&vaux2_reg>;

                                DVDD-supply = <&vbat>;

                        };

 AM654x:

 sound {

                compatible = "simple-audio-card";

                simple-audio-card,name = "AM65x-evm";

                simple-audio-card,widgets =

                        "Headphone", "Headphone Jack";

                simple-audio-card,routing =

                        "Headphone Jack",       "LHPOUT",

                        "Headphone Jack",       "RHPOUT";

                 simple-audio-card,format = "dsp_b";

                simple-audio-card,bitclock-master = <&sound_master>;

                simple-audio-card,frame-master = <&sound_master>;

                simple-audio-card,bitclock-inversion;

                 simple-audio-card,cpu {

                        sound-dai = <&mcasp1>;

                };

                 sound_master: simple-audio-card,codec {

                        sound-dai = <&tlv320aic23>;

                        system-clock-frequency = <12000000>;

                };

        };

 .........

 mcasp1_pins: mcasp1-pins {

                pinctrl-single,pins = <

                        AM65X_IOPAD(0x0244, PIN_INPUT_PULLDOWN, 5) /* (AB28) PRG0_PRU1_GPO0.MCASP1_ACLKX */

                        AM65X_IOPAD(0x0248, PIN_INPUT_PULLDOWN, 5) /* (AC28) PRG0_PRU1_GPO1.MCASP1_AFSX */

                        AM65X_IOPAD(0x0254, PIN_INPUT_PULLDOWN, 5) /* (AA25) PRG0_PRU1_GPO4.MCASP1_AXR0 */

                >;

        };

.........

tlv320aic23: tlv320aic23@1b {

                #sound-dai-cells = <0>;

                compatible = "ti,tlv320aic23";

                reg = <0x1b>;

                status = "okay";

                /* Regulators

                AVDD-supply = <&codec_vcc_3v3>;

                IOVDD-supply = <&gp_vcc_1v8>;

                DRVDD-supply = <&codec_vcc_3v3>;

                DVDD-supply = <&gp_vcc_1v8>;*/

        };

........

 &mcasp1 {

        #sound-dai-cells = <0>;

        status = "okay";

        pinctrl-names = "default";

        pinctrl-0 = <&mcasp1_pins>;

        op-mode = <0>;          /* MCASP_IIS_MODE */

        tdm-slots = <2>;

        /* 16 serializers */

        /* num-serializer = <10>;*/

        serial-dir = <  /* 0: INACTIVE, 1: TX, 2: RX */

                1 0 0 0

                0 0 0 0

                0 0

        >;

        tx-num-evt = <32>;

        rx-num-evt = <32>;

}; 

Shenghao,

Is AIC23B register readable via I2C?

Hi Tony

Sure, 2-wire in the datasheet means i2c. Following link can tell your more.

A Guide to Arduino & the I2C Protocol (Two Wire) | Arduino Documentation

@Peter kindly add your comments on 2-wire. Thanks.

Shenghao,

I am asking if AIC23B register can only be wrote in I2C mode, can't read out register via I2C. if so, i2cdump, i2cget doesn't work can be explained. 

Maybe AIC23 is too old for today's engineer know the details.

Kenn,

Suggest provide a scope waveform include FS, CLK, DATA, and detail frequency information. the first AM335x waveform looks strange, there are 128bit in one frame? did not find such configuration in AIC23 datasheet. 

ok, please see the photo below:

C1--BCLK; C2--AXR0; C4--FS

I think I found the problem from wave form, not sure where result in the error, but can give you a hint, should be driver configured wrong.