netdev - Re: [RFC PATCH 11/15] arm64: dts: qcom: sdm845-db845c: switch bt+wifi to qca power sequencer

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Message-ID: <YR7r1sWrLR18vGzr@ripper>
Date:   Thu, 19 Aug 2021 16:40:06 -0700
From:   Bjorn Andersson <bjorn.andersson@...aro.org>
To:     Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
Cc:     Andy Gross <agross@...nel.org>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        Marcel Holtmann <marcel@...tmann.org>,
        Johan Hedberg <johan.hedberg@...il.com>,
        Luiz Augusto von Dentz <luiz.dentz@...il.com>,
        Kalle Valo <kvalo@...eaurora.org>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Stanimir Varbanov <svarbanov@...sol.com>,
        linux-arm-msm@...r.kernel.org, linux-mmc@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-bluetooth@...r.kernel.org,
        ath10k@...ts.infradead.org, linux-wireless@...r.kernel.org,
        netdev@...r.kernel.org
Subject: Re: [RFC PATCH 11/15] arm64: dts: qcom: sdm845-db845c: switch
 bt+wifi to qca power sequencer

On Mon 16 Aug 17:55 PDT 2021, Dmitry Baryshkov wrote:

> Switch sdm845-db845c device tree to use new power sequencer driver
> rather than separate regulators.
> 

LGTM!

> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
> ---
>  arch/arm64/boot/dts/qcom/sdm845-db845c.dts | 21 ++++++++++++++-------
>  arch/arm64/boot/dts/qcom/sdm845.dtsi       |  6 ++++++
>  2 files changed, 20 insertions(+), 7 deletions(-)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sdm845-db845c.dts b/arch/arm64/boot/dts/qcom/sdm845-db845c.dts
> index 2d5533dd4ec2..c9b694e934d4 100644
> --- a/arch/arm64/boot/dts/qcom/sdm845-db845c.dts
> +++ b/arch/arm64/boot/dts/qcom/sdm845-db845c.dts
> @@ -629,6 +629,16 @@ &qupv3_id_1 {
>  	status = "okay";
>  };
>  
> +&qca_pwrseq {
> +	status = "okay";
> +
> +	vddio-supply = <&vreg_s4a_1p8>;
> +
> +	vddxo-supply = <&vreg_l7a_1p8>;
> +	vddrfa-supply = <&vreg_l17a_1p3>;
> +	vddch0-supply = <&vreg_l25a_3p3>;
> +};
> +
>  &sdhc_2 {
>  	status = "okay";
>  
> @@ -916,10 +926,8 @@ &uart6 {
>  	bluetooth {
>  		compatible = "qcom,wcn3990-bt";
>  
> -		vddio-supply = <&vreg_s4a_1p8>;
> -		vddxo-supply = <&vreg_l7a_1p8>;
> -		vddrf-supply = <&vreg_l17a_1p3>;
> -		vddch0-supply = <&vreg_l25a_3p3>;
> +		bt-pwrseq = <&qca_pwrseq 1>;

I suppose there will be a DT binding and some defines for the WiFi/BT
argument to &qca_pwrseq?

Regards,
Bjorn

> +
>  		max-speed = <3200000>;
>  	};
>  };
> @@ -1036,9 +1044,8 @@ &wifi {
>  	status = "okay";
>  
>  	vdd-0.8-cx-mx-supply = <&vreg_l5a_0p8>;
> -	vdd-1.8-xo-supply = <&vreg_l7a_1p8>;
> -	vdd-1.3-rfa-supply = <&vreg_l17a_1p3>;
> -	vdd-3.3-ch0-supply = <&vreg_l25a_3p3>;
> +
> +	wifi-pwrseq = <&qca_pwrseq 0>;
>  
>  	qcom,snoc-host-cap-8bit-quirk;
>  };
> diff --git a/arch/arm64/boot/dts/qcom/sdm845.dtsi b/arch/arm64/boot/dts/qcom/sdm845.dtsi
> index 0a86fe71a66d..78e889b2c8dd 100644
> --- a/arch/arm64/boot/dts/qcom/sdm845.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sdm845.dtsi
> @@ -1051,6 +1051,12 @@ psci {
>  		method = "smc";
>  	};
>  
> +	qca_pwrseq: qca-pwrseq {
> +		compatible = "qcom,wcn3990-pwrseq";
> +		#pwrseq-cells = <1>;
> +		status = "disabled";
> +	};
> +
>  	soc: soc@0 {
>  		#address-cells = <2>;
>  		#size-cells = <2>;
> -- 
> 2.30.2
>