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

[Fabio Estevam]

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 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 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
>>                                 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
>>                         >;
>>                 };
>
>
> Are the values correct for that?

They should be good.

> How can I check or dump the SGTL5000 registers?

cat /sys/kernel/debug/regmap/xxx