linux-kernel - Re: [PATCH v2 4/4] arm64: dts: qcom: msm8976: Add WCNSS node

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Date: Tue, 2 Apr 2024 11:26:58 +0100
From: Bryan O'Donoghue <bryan.odonoghue@...aro.org>
To: Adam Skladowski <a39.skl@...il.com>
Cc: phone-devel@...r.kernel.org, ~postmarketos/upstreaming@...ts.sr.ht,
 Andy Gross <agross@...nel.org>, Bjorn Andersson <andersson@...nel.org>,
 Konrad Dybcio <konrad.dybcio@...aro.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 v2 4/4] arm64: dts: qcom: msm8976: Add WCNSS node

On 01/04/2024 18:21, Adam Skladowski wrote:
> Add node describing wireless connectivity subsystem.
> 
> Signed-off-by: Adam Skladowski <a39.skl@...il.com>
> ---
>   arch/arm64/boot/dts/qcom/msm8976.dtsi | 104 ++++++++++++++++++++++++++
>   1 file changed, 104 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/msm8976.dtsi b/arch/arm64/boot/dts/qcom/msm8976.dtsi
> index 77670fce9b8f..41c748c78347 100644
> --- a/arch/arm64/boot/dts/qcom/msm8976.dtsi
> +++ b/arch/arm64/boot/dts/qcom/msm8976.dtsi
> @@ -771,6 +771,36 @@ blsp2_i2c4_sleep: blsp2-i2c4-sleep-state {
>   				drive-strength = <2>;
>   				bias-disable;
>   			};
> +
> +			wcss_wlan_default: wcss-wlan-default-state  {
> +				wcss-wlan2-pins {
> +					pins = "gpio40";
> +					function = "wcss_wlan2";
> +					drive-strength = <6>;
> +					bias-pull-up;
> +				};
> +
> +				wcss-wlan1-pins {
> +					pins = "gpio41";
> +					function = "wcss_wlan1";
> +					drive-strength = <6>;
> +					bias-pull-up;
> +				};
> +
> +				wcss-wlan0-pins {
> +					pins = "gpio42";
> +					function = "wcss_wlan0";
> +					drive-strength = <6>;
> +					bias-pull-up;
> +				};
> +
> +				wcss-wlan-pins {
> +					pins = "gpio43", "gpio44";
> +					function = "wcss_wlan";
> +					drive-strength = <6>;
> +					bias-pull-up;
> +				};
> +			};
>   		};

Doesn't look right

arch/arm64/boot/dts/qcom/msm8916.dtsi
arch/arm64/boot/dts/qcom/msm8939.dtsi

wcss_wlan_default: wcss-wlan-default-state {
	pins = "gpio40", "gpio41", "gpio42", "gpio43", "gpio44";
	function = "wcss_wlan";
	drive-strength = <6>;
	bias-pull-up;
};


>   
>   		gcc: clock-controller@...0000 {
> @@ -1446,6 +1476,80 @@ blsp2_i2c4: i2c@...8000 {
>   			status = "disabled";
>   		};
>   
> +		wcnss: remoteproc@...4000 {
> +			compatible = "qcom,pronto-v3-pil", "qcom,pronto";
> +			reg = <0x0a204000 0x2000>,
> +			      <0x0a202000 0x1000>,
> +			      <0x0a21b000 0x3000>;
> +			reg-names = "ccu",
> +				    "dxe",
> +				    "pmu";
> +
> +			memory-region = <&wcnss_fw_mem>;

For preference and consistency "wcnss_fw_mem" should be "wcnss_mem"

The ordering of the compatible/reg/interrupt is different to 8916/8939 too.

I'm not sure which is currently the preferred order of declaration but 
for V3 of this series would appreciate if you could find out and add the 
comment to your cover letter.

Otherwise LGTM.

Please CC me on V3.

---
bod