linux-kernel - Re: [PATCH v1 1/1] arm64: dts: qcom: qcs8300-ride: enable BT on qcs8300-ride

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Message-ID: <b74f0591-242d-45eb-8c5b-bfc7edb0441a@oss.qualcomm.com>
Date: Tue, 11 Feb 2025 15:34:51 +0100
From: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
To: Cheng Jiang <quic_chejiang@...cinc.com>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konradybcio@...nel.org>, Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>
Cc: linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, quic_jiaymao@...cinc.com,
        quic_shuaz@...cinc.com, quic_zijuhu@...cinc.com,
        quic_mohamull@...cinc.com
Subject: Re: [PATCH v1 1/1] arm64: dts: qcom: qcs8300-ride: enable BT on
 qcs8300-ride

On 11.02.2025 11:44 AM, Cheng Jiang wrote:
> Enable BT on qcs8300-ride by adding a node for the BT module. Since the
> platform uses the QCA6698 Bluetooth chip. While the QCA6698 shares th
> same IP core as the WCN6855, it has different RF components and RAM sizes,
> requiring new firmware files. Use the firmware-name property to specify
> the NVM and rampatch firmware to load.
> 
> Signed-off-by: Cheng Jiang <quic_chejiang@...cinc.com>
> ---
>  arch/arm64/boot/dts/qcom/qcs8300-ride.dts | 24 +++++++++++++++++++++++
>  1 file changed, 24 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/qcs8300-ride.dts b/arch/arm64/boot/dts/qcom/qcs8300-ride.dts
> index a6991e8e2df6..93458773b72d 100644
> --- a/arch/arm64/boot/dts/qcom/qcs8300-ride.dts
> +++ b/arch/arm64/boot/dts/qcom/qcs8300-ride.dts
> @@ -17,6 +17,7 @@ / {
>  
>  	aliases {
>  		serial0 = &uart7;
> +		serial1 = &uart2;
>  	};
>  
>  	chosen {
> @@ -451,6 +452,13 @@ &serdes0 {
>  };
>  
>  &tlmm {
> +	bt_en_state: bt-en-state {
> +		pins = "gpio55";
> +		function = "normal";
> +		output-low;
> +		bias-pull-down;
> +	};
> +
>  	ethernet0_default: ethernet0-default-state {
>  		ethernet0_mdc: ethernet0-mdc-pins {
>  			pins = "gpio5";
> @@ -544,6 +552,22 @@ wlan_en_state: wlan-en-state {
>  	};
>  };
>  
> +&uart2 {
> +	status = "okay";
> +	bluetooth: bluetooth {

Please add a newline between the last property and subnodes

> +		compatible = "qcom,wcn6855-bt";
> +		firmware-name = "QCA6698/hpnv21", "QCA6698/hpbtfw21.tlv";
> +
> +		pinctrl-names = "default";
> +		pinctrl-0 = <&bt_en_state>;

You should use qcom,wcn6855-pmu (see e.g. sc8280xp-crd.dts)

> +		enable-gpios = <&tlmm 55 GPIO_ACTIVE_HIGH>; /* BT_EN */
> +
> +		vddio-supply       = <&vreg_conn_pa>;         /* bt-vdd-ctrl1-supply */
> +		vddbtcxmx-supply   = <&vreg_conn_1p8>;        /* bt-vdd-ctrl2-supply */

Drop these comments