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

[gianluca]

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??? :-(

Regards,
-- 
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