linux-kernel - Re: [PATCH 2/3] arm64: dts: qcom: acer-aspire1: Correct audio codec definition

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Date:   Tue, 31 Oct 2023 11:06:44 +0100
From:   Konrad Dybcio <konrad.dybcio@...aro.org>
To:     Nikita Travkin <nikita@...n.ru>
Cc:     cros-qcom-dts-watchers@...omium.org,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/3] arm64: dts: qcom: acer-aspire1: Correct audio codec
 definition

On 31.10.2023 08:20, Nikita Travkin wrote:
> Konrad Dybcio писал(а) 31.10.2023 02:48:
>> On 27.10.2023 16:42, Nikita Travkin wrote:
>>> When initially added, a mistake was made in the definition of the codec.
>>>
>>> Despite the fact that the DMIC line is connected on the side of the
>>> codec chip, and relevant passive components, including 0-ohm resistors
>>> connecting the dmics, are present, the dmic line is still cut in
>>> another place on the board, which was overlooked.
>>>
>>> Correct this by replacing the dmic configuration with a comment
>>> describing this hardware detail.
>>>
>>> While at it, also add missing regulators definitions. This is not a
>>> functional change as all the relevant regulators were already added via
>>> the other rail supplies.
>>>
>>> Fixes: 4a9f8f8f2ada ("arm64: dts: qcom: Add Acer Aspire 1")
>>> Signed-off-by: Nikita Travkin <nikita@...n.ru>
>>> ---
>>>  arch/arm64/boot/dts/qcom/sc7180-acer-aspire1.dts | 17 +++++++++++++++--
>>>  1 file changed, 15 insertions(+), 2 deletions(-)
>>>
>>> diff --git a/arch/arm64/boot/dts/qcom/sc7180-acer-aspire1.dts b/arch/arm64/boot/dts/qcom/sc7180-acer-aspire1.dts
>>> index cfde8cd47107..00b442696618 100644
>>> --- a/arch/arm64/boot/dts/qcom/sc7180-acer-aspire1.dts
>>> +++ b/arch/arm64/boot/dts/qcom/sc7180-acer-aspire1.dts
>>> @@ -209,9 +209,22 @@ alc5682: codec@1a {
>>>  		AVDD-supply = <&vreg_l15a_1p8>;
>>>  		MICVDD-supply = <&reg_codec_3p3>;
>>>  		VBAT-supply = <&reg_codec_3p3>;
>>> +		DBVDD-supply = <&vreg_l15a_1p8>;
>>> +		LDO1-IN-supply = <&vreg_l15a_1p8>;
>>> +
>>> +		/*
>>> +		 * NOTE: The board has a path from this codec to the
>>> +		 * DMIC microphones in the lid, however some of the option
>>> +		 * resistors are absent and the microphones are connected
>>> +		 * to the SoC instead.
>> Would that not also require more DT changes and maybe UCM?
> 
> I don't think I had any other descriptions to support the dmic in
> the initial set (first audio support for this board is 3/3 here)
> and there is no upstream UCM yet - I will probably hold it off until
> I get vamacro and dmic on it working.
I was told that VAMACRO is "the easiest thing possible to get going"
(paraphrasing), did you go through something like this sequence [1]?

https://git.linaro.org/people/srinivas.kandagatla/alsa-ucm-conf.git/tree/ucm2/codecs/qcom-lpass/va-macro/DMIC0EnableSeq.conf?h=x13s&id=244979b03f5b9284e6a68eae6f9995f6ac735be8

Konrad