[alsa-devel] Post Audio codec sgtl5000 with ARM/Zynq under Linux

[Nikolay Dimitrov]

Hi Wojciech,

On 06/11/2015 09:59 AM, Wojciech Zebrowski wrote:
> Hi All
>
> I try solve problem with support SGTL5000  under Linux , ARM / ZYNQ
> ARCHITECTURE. Please add this post to "alsa" forum.  If you need any
> others information i can send it .
>
> My post:
>
>   I try use freescale audio chip sgtl5000 on my custom board with Zynq
> chip. I need help with instance driver in device tree and debug first
> execution.
>
> 1.*I use I2C* controler to configure sgtl5000 :
> /        axi_iic_sgtl: i2c at 41610000 {//
> //            #address-cells = <1>;//
> //            #size-cells = <0>;//
> //            compatible = "xlnx,xps-iic-2.00.a";//
> //            interrupt-parent = <&gic>;//
> //            interrupts = <0 31 4>;//
> //            reg = <0x41610000 0x10000>;//
> ////
> //            codec: sgtl5000 at 0a {//
> //                #sound-dai-cells = <0>;//
> //                compatible = "fsl,sgtl5000";//
> //                reg = <0x0a>;//
> //////                VDDA-supply = <&reg_3p3v>;//
> //////                VDDIO-supply = <&reg_3p3v>;//
> //                clocks = <&clkc 19>;//
> //      }; /
>
>   How can i set comment lines ?
>
> 2. sound :
> /        sound {
>            compatible = "fsl,imx51-babbage-sgtl5000",
> "fsl,imx-audio-sgtl5000";
>            model = "imx51-babbage-sgtl5000";
> //          ssi-controller = <&ssi1>;
>            audio-codec = <&codec>;
>            audio-routing =
>                    "MIC_IN", "Mic Jack",
>                    "Mic Jack", "Mic Bias",
>                    "Headphone Jack", "HP_OUT";
>            mux-int-port = <1>;
>            mux-ext-port = <3>;
>          };/
> I want use I2C configuration driver not SPI . How can i set comment line ?
>
> 3. I2S driver looks like ok  :
> /        axi_i2s_adi_0: axi_i2s_adi at 77600000 {
>              compatible = "xlnx,axi-i2s-adi-1.0";
>              reg = <0x77600000 0x10000>;
>              xlnx,bclk-pol = <0x0>;
>              xlnx,dma-type = <0x1>;
>              xlnx,has-rx = <0x1>;
>              xlnx,has-tx = <0x1>;
>              xlnx,lrclk-pol = <0x0>;
>              xlnx,num-ch = <0x1>;
>              xlnx,s-axi-min-size = <0x000001FF>;
>              xlnx,slot-width = <0x18>;
>          };/
>
>
> PS.
> Right now i can compile device tree but audio is not detected.
> What kind of log do you need to check Linux boot problem ?

Comments in DTS files are done the old-school C way, /* */.

Regarding the SGTL5K configuration, please take a look here for
reference:

https://github.com/torvalds/linux/blob/0f57d86787d8b1076ea8f9cbdddda2a46d534a27/arch/arm/boot/dts/imx6dl-riotboard.dts

If the audio codec device is detected during boot, you should see
something like this in you boot logs:


...
sgtl5000 0-000a: sgtl5000 revision 0x11
sgtl5000 0-000a: Using internal LDO instead of VDDD
imx-sgtl5000 sound: sgtl5000 <-> 2028000.ssi mapping ok
...
ALSA device list:
#0: imx6-riotboard-sgtl5000
...


Regards,
Nikolay