Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.kernel > #1464466 > unrolled thread

Re: [PATCH 1/2] ARM: dts: da850-lcdk: Audio support via simple-card

Back to article view | Back to linux.kernel

This discussion starts older than the indexed window; earlier articles aren't shown. The article labeled Started by below is the oldest one visible, not the original post.

Contents

  Re: [PATCH 1/2] ARM: dts: da850-lcdk: Audio support via simple-card Sekhar Nori <nsekhar@ti.com> - 2016-08-17 12:00 +0200
    Re: [PATCH 1/2] ARM: dts: da850-lcdk: Audio support via simple-card Karl Beldan <kbeldan@baylibre.com> - 2016-08-17 12:40 +0200
      Re: [PATCH 1/2] ARM: dts: da850-lcdk: Audio support via simple-card Sekhar Nori <nsekhar@ti.com> - 2016-08-17 13:40 +0200

#1464466 — Re: [PATCH 1/2] ARM: dts: da850-lcdk: Audio support via simple-card

On Thursday 11 August 2016 01:38 AM, Karl Beldan wrote:
> The LCDK embeds a TLV320AIC3106 connected to the SoC McASP for analog
> audio. This relies on the 'dummy' regulator as the codec is always on.
> Quality is good with arecord -pipe- aplay on Line In/Line Out.
> The MIC path doesn't seem to work yet.

I tested the patch and I could not get the MIC to work as well. I
suggest dropping the MIC path parts till that is debugged and root caused.

> Signed-off-by: Karl Beldan <kbeldan@baylibre.com>
> ---
>  arch/arm/boot/dts/da850-lcdk.dts | 75 ++++++++++++++++++++++++++++++++++++++++
>  1 file changed, 75 insertions(+)

> +&i2c0 {
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&i2c0_pins>;
> +	clock-frequency = <100000>;
> +	status = "okay";
> +
> +	tlv320aic3106: tlv320aic3106@18 {
> +		#sound-dai-cells = <0>;
> +		compatible = "ti,tlv320aic3106";
> +		reg = <0x18>;
> +		status = "okay";
> +
> +		ai3x-micbias-vg = <MICBIAS_2_5V>;

It will be nice to add the codec regulators as well (and that in turn
needs the PMIC to be populated). Although I wont insist on that since
the regulators are optional properties.

Rest of the patch looks good to me.

Thanks,
Sekhar

[toc] | [next] | [standalone]

#1464487

On Wed, Aug 17, 2016 at 03:24:42PM +0530, Sekhar Nori wrote:
> On Thursday 11 August 2016 01:38 AM, Karl Beldan wrote:
> > The LCDK embeds a TLV320AIC3106 connected to the SoC McASP for analog
> > audio. This relies on the 'dummy' regulator as the codec is always on.
> > Quality is good with arecord -pipe- aplay on Line In/Line Out.
> > The MIC path doesn't seem to work yet.
> 
> I tested the patch and I could not get the MIC to work as well. I
> suggest dropping the MIC path parts till that is debugged and root caused.
> 

Ok.

> > Signed-off-by: Karl Beldan <kbeldan@baylibre.com>
> > ---
> >  arch/arm/boot/dts/da850-lcdk.dts | 75 ++++++++++++++++++++++++++++++++++++++++
> >  1 file changed, 75 insertions(+)
> 
> > +&i2c0 {
> > +	pinctrl-names = "default";
> > +	pinctrl-0 = <&i2c0_pins>;
> > +	clock-frequency = <100000>;
> > +	status = "okay";
> > +
> > +	tlv320aic3106: tlv320aic3106@18 {
> > +		#sound-dai-cells = <0>;
> > +		compatible = "ti,tlv320aic3106";
> > +		reg = <0x18>;
> > +		status = "okay";
> > +
> > +		ai3x-micbias-vg = <MICBIAS_2_5V>;
> 
> It will be nice to add the codec regulators as well (and that in turn
> needs the PMIC to be populated). Although I wont insist on that since
> the regulators are optional properties.
> 

In the patch comment I stated it relied on the dummy regulator as the
codec is always on but maybe I should have been more precise: it is not
out of convenience to keep things on, it is by HW design: I mentioned
it in the comment of "ARM: dts: da850: Add basic DTS for the LCDK":
 "the main PMIC, different and hard-wired on the LCDK (the LDOs and
 DCDCs are always on)" after reviewing the schematics.
I could add that in the patch comment.

Thanks for reviewing.

Rgds, 
Karl

[toc] | [prev] | [next] | [standalone]

#1464529

On Wednesday 17 August 2016 04:03 PM, Karl Beldan wrote:
> On Wed, Aug 17, 2016 at 03:24:42PM +0530, Sekhar Nori wrote:
>> On Thursday 11 August 2016 01:38 AM, Karl Beldan wrote:
>>> The LCDK embeds a TLV320AIC3106 connected to the SoC McASP for analog
>>> audio. This relies on the 'dummy' regulator as the codec is always on.
>>> Quality is good with arecord -pipe- aplay on Line In/Line Out.
>>> The MIC path doesn't seem to work yet.
>>
>> I tested the patch and I could not get the MIC to work as well. I
>> suggest dropping the MIC path parts till that is debugged and root caused.
>>
> 
> Ok.
> 
>>> Signed-off-by: Karl Beldan <kbeldan@baylibre.com>
>>> ---
>>>  arch/arm/boot/dts/da850-lcdk.dts | 75 ++++++++++++++++++++++++++++++++++++++++
>>>  1 file changed, 75 insertions(+)
>>
>>> +&i2c0 {
>>> +	pinctrl-names = "default";
>>> +	pinctrl-0 = <&i2c0_pins>;
>>> +	clock-frequency = <100000>;
>>> +	status = "okay";
>>> +
>>> +	tlv320aic3106: tlv320aic3106@18 {
>>> +		#sound-dai-cells = <0>;
>>> +		compatible = "ti,tlv320aic3106";
>>> +		reg = <0x18>;
>>> +		status = "okay";
>>> +
>>> +		ai3x-micbias-vg = <MICBIAS_2_5V>;
>>
>> It will be nice to add the codec regulators as well (and that in turn
>> needs the PMIC to be populated). Although I wont insist on that since
>> the regulators are optional properties.
>>
> 
> In the patch comment I stated it relied on the dummy regulator as the
> codec is always on but maybe I should have been more precise: it is not
> out of convenience to keep things on, it is by HW design: I mentioned
> it in the comment of "ARM: dts: da850: Add basic DTS for the LCDK":
>  "the main PMIC, different and hard-wired on the LCDK (the LDOs and
>  DCDCs are always on)" after reviewing the schematics.
> I could add that in the patch comment.

I see. PMIC on the LCDK is not software configurable at all. I think
what you have in the patch comment is already okay. More explanation
wont harm though :)

Regards,
Sekhar

[toc] | [prev] | [standalone]

Back to top | Article view | linux.kernel

csiph-web