i.MX ProcessorsのトピックRe: imx6 can support pcm codec

imx6 can support pcm codec

kingliu — Tue, 15 Apr 2014 06:33:17 GMT

i.MX 6Dual/6Quad Applications Processor Reference Manual say the ssi of the imx6 only suport i2s ac97 mode opreation mode?

Anybody konow do the ssi suport pcm mode ?

Re: imx6 can support pcm codec

justin_jiang — Tue, 15 Apr 2014 07:40:13 GMT

Hi Liu King,

You can configure he SSI to network mode to support PCM data.

B.R

Jusin

Re: imx6 can support pcm codec

kingliu — Tue, 15 Apr 2014 08:37:28 GMT

Hi Qingrong

There are two modes mode A and mode B of pcm mode.

Which mode does the network mode of ssi support?

Re: imx6 can support pcm codec

justin_jiang — Tue, 15 Apr 2014 08:52:48 GMT

You can config the TSCKP and RSCKP to support both mode A&B.

TSCKP

Transmit Clock Polarity. This bit controls which bit clock edge is used to clock out data for the transmit

section. Note: TSCKP is 0 CLK_IST = 0; TSCKP is 1CLK_IST = 1

0 Data clocked out on rising edge of bit clock.

1 Data clocked out on falling edge of bit clock.

RSCKP

Receive Clock Polarity. This bit controls which bit clock edge is used to latch in data for the receive

section.

0 Data latched on falling edge of bit clock.

1 Data latched on rising edge of bit clock.

Re: imx6 can support pcm codec

nagendrasarma — Wed, 01 Apr 2015 14:51:52 GMT

hi Freescale,

can you please provide the steps to enable Network mode (PCM) to capture 6 channel audio ?

in dtsi file can i change the CPU_DAI configuration as below ?

&ssi2 {

fsl,mode = "pcm-slave";

status = "okay";

};

regards

Nagendra

Re: imx6 can support pcm codec

sumit8915 — Wed, 01 Jul 2015 05:50:21 GMT

Hi Justin,

We have a custom Designed Board based on i.mx6D, Where the SLIC IC, LE9641 (Supporting PCM +SPI) is connected to the AUDMUX interface and the SPI interface of the i.mx6D respectively.

We are able to communicate with the SLIC IC trough SPI interface, but i m not getting CLOCK from the AUDMUX fro the PCM interface.

Could you please suggest anything on this?

Thanks

Sumit

Re: imx6 can support pcm codec

saurabh206 — Wed, 01 Jul 2015 06:08:46 GMT

Sumit

You need to configure SSI in master mode than only you will get clock from AUDMUX interface.

Re: imx6 can support pcm codec

sumit8915 — Wed, 01 Jul 2015 06:21:35 GMT

Hi Saurabh,

It is configured in Mater mode only. But still no clock comes on AUD5_TXC Pin :smileyplain:.

Thanks

Sumit

Re: imx6 can support pcm codec

saurabh206 — Wed, 01 Jul 2015 09:04:24 GMT

Sumit

Can you shared the information for where the code modification done?

Re: imx6 can support pcm codec

sumit8915 — Wed, 01 Jul 2015 09:18:41 GMT

Hi Saurabh patel,

Here are my code changes.

&audmux {

pinctrl-names = "default";

pinctrl-0 = <&pinctrl_audmux_3>;

status = "okay";

};

pinctrl_audmux_3: audmux-3 {

fsl,pins = <

MX6QDL_PAD_KEY_ROW1__AUD5_RXD 0x130b0

MX6QDL_PAD_KEY_COL0__AUD5_TXC 0x130b0

MX6QDL_PAD_KEY_ROW0__AUD5_TXD 0x110b0

MX6QDL_PAD_KEY_COL1__AUD5_TXFS 0x130b0

};

&ssi1 {

fsl,mode = "i2s-master";

status = "okay";

};

mux-int-port = 5 mux-ext-port = 2 and we are setting dai format as SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |SND_SOC_DAIFMT_CBS_CFS

and audmux configurations as

ret = imx_audmux_v2_configure_port(int_port,

IMX_AUDMUX_V2_PTCR_SYN |

IMX_AUDMUX_V2_PTCR_TFSEL(ext_port) |

IMX_AUDMUX_V2_PTCR_TCSEL(ext_port) |

IMX_AUDMUX_V2_PTCR_TFSDIR |

IMX_AUDMUX_V2_PTCR_TCLKDIR,

IMX_AUDMUX_V2_PDCR_RXDSEL(ext_port));

ret = imx_audmux_v2_configure_port(ext_port,

IMX_AUDMUX_V2_PTCR_SYN,

IMX_AUDMUX_V2_PDCR_RXDSEL(int_port));

Re: imx6 can support pcm codec

saurabh206 — Wed, 01 Jul 2015 09:33:29 GMT

Hi Sumit

Have you set "snd_soc_dai_set_sysclk" clock direction out.

It will solve your issue.

Re: imx6 can support pcm codec

sumit8915 — Wed, 01 Jul 2015 09:44:04 GMT

Hi Saurabh Patel,

Our clock direction is OUT only.Here is our function call.

ret = snd_soc_dai_set_sysclk(cpu_dai, 0,

pll_out, SND_SOC_CLOCK_OUT);

Re: imx6 can support pcm codec

sumit8915 — Thu, 02 Jul 2015 10:23:29 GMT

Hi Saurabh,

After using the SSI2 controller instead of SSI1, We are able to get the PCM Clock of 2.048Mhz and Frame Sync of 32Khz, But the SLIC IC supports PCM Clock rates of 1.024MHz, 1.536MHz, 2.048MHz. 3.073MHz, 4.096Mhz, 6.144MHz and 8.192Mhz with a Frame SYNC of 8KHz.

We have changed the "SSIx_SRCCR" register corresponding to SSI2 controller of i.MX6 processor with values of "0x00007F03" to make frame sync freq of 8Khz, But still no change, But we did not see any change in the Frame sync clock ,

Here in the below table we have used with marked configuration.

Do you have any idea, how we can get the frame Sync of 8Khz.

Thanks

Sumit

Re: imx6 can support pcm codec

sumit8915 — Tue, 07 Jul 2015 12:31:35 GMT

Hi,

Can Anybody reply on my last question posted.

Thanks

Sumit

Re: imx6 can support pcm codec

shichinhuang — Thu, 24 Sep 2015 06:38:20 GMT

Hi Qingrong,

Our implement is using audio PCM format via I2S interface connect to Bluetooth to support audio function.

Does i.MX6Solo can support it? (Please also see the attachment)

Thanks!

Re: imx6 can support pcm codec

justin_jiang — Thu, 24 Sep 2015 07:41:15 GMT

Yes, i.MX 6Solo can support I2S interface.

Re: imx6 can support pcm codec

shichinhuang — Thu, 24 Sep 2015 08:35:45 GMT

Hi Qingrong,

So you mean i.MX6Solo can set audio format to PCM format and stream it with Bluetooth via I2S interface?

Thank you for your support!

Re: imx6 can support pcm codec

maheshk — Wed, 10 Feb 2016 13:23:20 GMT

Hi all,

I am working on PROGRAMMABLE VOICE DAA SI3050, It has SPI Interface for control as well as PCM highway data interface, which is to be interfaced with I.MX6UL. Can anybody tell whether I.MX6UL has SSI interface ?. If this interface is possible, Please share the information on this.

Regards

Mahesh

Re: imx6 can support pcm codec

justin_jiang — Tue, 16 Feb 2016 01:58:13 GMT

It is Synchronous Audio Interface (SAI) in i.MX6UL.

The synchronous audio interface (SAI) supports full-duplex serial interfaces with frame synchronization such as I2S, AC97, TDM, and codec/DSP interfaces

You can download i.MX6UL Reference Manual for more detail information.

It can be found in: i.MX 6UltraLite Applications Processor|NXP

Re: imx6 can support pcm codec

guslabao — Fri, 15 Apr 2016 23:57:11 GMT

Hi Shichin,

Did you get the IMX6Solo AUD3 interface to connect to BT PCM interface to work?

Thanks,

Gus