linux-kernel - Re: [PATCH 06/13] arm64: dts: qcom: msm8916-wingtech-wt88047: Add sound and modem

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Message-ID: <f66409be-8444-468e-9e48-cbca5e5a84f7@linaro.org>
Date:   Tue, 26 Sep 2023 20:56:19 +0200
From:   Konrad Dybcio <konrad.dybcio@...aro.org>
To:     Stephan Gerhold <stephan@...hold.net>,
        Bjorn Andersson <andersson@...nel.org>
Cc:     Andy Gross <agross@...nel.org>, linux-arm-msm@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        phone-devel@...r.kernel.org, ~postmarketos/upstreaming@...ts.sr.ht,
        Bryan O'Donoghue <bryan.odonoghue@...aro.org>
Subject: Re: [PATCH 06/13] arm64: dts: qcom: msm8916-wingtech-wt88047: Add
 sound and modem

On 26.09.2023 18:51, Stephan Gerhold wrote:
> Enable sound and modem for the Xiaomi Redmi 2. The setup
> is similar to most MSM8916 devices, i.e.:
> 
>  - QDSP6 audio
>  - Earpiece/headphones/microphones via digital/analog codec in
>    MSM8916/PM8916
>  - Audio jack detection via analog codec in PM8916
>  - WWAN Internet via BAM-DMUX
> 
> except:
> 
>  - Speaker amplifier is connected to HPH_R (headphones) output of the
>    analog codec. There is a separate analog switch that allows disabling
>    playback via the headphone jack.
> 
> Signed-off-by: Stephan Gerhold <stephan@...hold.net>
> ---
>  .../boot/dts/qcom/msm8916-wingtech-wt88047.dts     | 76 ++++++++++++++++++++++
>  1 file changed, 76 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/msm8916-wingtech-wt88047.dts b/arch/arm64/boot/dts/qcom/msm8916-wingtech-wt88047.dts
> index 419f35c1fc92..600c225a2568 100644
> --- a/arch/arm64/boot/dts/qcom/msm8916-wingtech-wt88047.dts
> +++ b/arch/arm64/boot/dts/qcom/msm8916-wingtech-wt88047.dts
> @@ -6,6 +6,8 @@
>  /dts-v1/;
>  
>  #include "msm8916-pm8916.dtsi"
> +#include "msm8916-modem-qdsp6.dtsi"
> +
>  #include <dt-bindings/gpio/gpio.h>
>  #include <dt-bindings/input/input.h>
>  #include <dt-bindings/leds/common.h>
> @@ -25,6 +27,28 @@ chosen {
>  		stdout-path = "serial0";
>  	};
>  
> +	speaker_amp: audio-amplifier {
> +		compatible = "simple-audio-amplifier";
> +		enable-gpios = <&tlmm 117 GPIO_ACTIVE_HIGH>;
> +		sound-name-prefix = "Speaker Amp";
> +		pinctrl-0 = <&speaker_amp_default>;
> +		pinctrl-names = "default";
> +	};
> +
> +	/*
> +	 * This seems to be actually an analog switch that either routes audio
> +	 * to the headphone jack or nowhere. Given that we need to enable a GPIO
> +	 * to get sound on headphones, modelling it as simple-audio-amplifier
> +	 * works just fine.
> +	 */
Funny phones, as always

Reviewed-by: Konrad Dybcio <konrad.dybcio@...aro.org>

Konrad