[alsa-devel] Fwd: Issue on Linux 4.12-rc7 on iMX6 based board

[gianluca]

On 06/29/2017 04:24 PM, gianluca wrote:
> On 06/29/2017 03:49 PM, Fabio Estevam wrote:
>> On Thu, Jun 29, 2017 at 10:39 AM, gianluca
>> <gianlucarenzi at eurekelettronica.it> wrote:
>>
>>> In the device-tree the sound node is so configured:
>>>
>>>>         sound {
>>>>                 compatible = "fsl,imx-audio-sgtl5000";
>>>>                 model = "imx6-ek360-sgtl5000";
>>>>                 ssi-controller = <&ssi1>;
>>>>                 audio-codec = <&sgtl5000>;
>>>>                 audio-routing =
>>>>                         "MIC_IN", "Mic Jack",
>>>>                         "Mic Jack", "Mic Bias",
>>>>                         "Headphone Jack", "HP_OUT";
>>>>                 mux-int-port = <1>;
>>>>                 mux-ext-port = <4>;
>>
>> This should be mux-ext-port = <3>;
>>
>
> I've already modified now.
>
>>> I do not know about the mux-int-port or mux-ext-port. The only thing
>>> I know
>>> is the hardware guy told me he routed the ssi (CLK and DAT) to:
>>>
>>> AUD3_TXC_R (i2s_sclk)
>>> AUD3_TXD   (i2s_din)
>>> AUD3_TXFS  (i2s_lrclk)
>>> AUD3_RXD   (i2s_dout)
>>> SYS_MCLK   (GPIO_0_CLKO sys_mclk)
>>
>> since you are using AUD3 pins.
>>
>
> So, are they good?
>
> My only concern is the value after the MSYS_CLK (GPIO_0_CCM_CLK01). It
> is 0x030b0. Is this correct for output clock signal?
>
>>>
>>> So I configured the pinmux for audio in the following way:
>>>
>>>>                 pinctrl_audmux: audmuxgrp {
>>>>                         fsl,pins = <
>>>>                                 /* SGTL5000 sys_mclk */
>>>>                                 MX6QDL_PAD_GPIO_0__CCM_CLKO1
>>>> 0x030b0
>
> The remaining pins seems to be configured as a lot of boards in the
> current 4.12-rc7 kernel. So I can assume they are good.
>
>>>>                                 MX6QDL_PAD_CSI0_DAT4__AUD3_TXC
>>>> 0x130b0
>>>>                                 MX6QDL_PAD_CSI0_DAT5__AUD3_TXD
>>>> 0x110b0
>>>>                                 MX6QDL_PAD_CSI0_DAT6__AUD3_TXFS
>>>> 0x130b0
>>>>                                 MX6QDL_PAD_CSI0_DAT7__AUD3_RXD
>>>> 0x130b0
>>>>                         >;
>>>>                 };
>>>
>>>
>>
>> They should be good.
>>
>>> How can I check or dump the SGTL5000 registers?
>>
>> cat /sys/kernel/debug/regmap/xxx
>>
>
> I am missing the regmap. Should I configure kernel with additional
> CONFIG_ ?
>
> I started from the imxv6_imxv7_defconfig, then modified to have the
> correct drivers module as built-in or dynamic.
>
> Maybe am I missing something else??? :-(
>

The funny thing is I can clearly hear the 'POP' of the speaker after 
some seconds the end of the audio stream...

> # aplay /usr/share/sounds/alsa/Front_Right.wav




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