linux-kernel - Re: [PATCH 1/2] arm64: dts: msm8916-longcheer-l8150: Enable WCNSS for WiFi and BT

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Message-ID: <20191012150854.GA33229@gerhold.net>
Date:   Sat, 12 Oct 2019 17:08:54 +0200
From:   Stephan Gerhold <stephan@...hold.net>
To:     nikitos.tr@...il.com
Cc:     agross@...nel.org, bjorn.andersson@...aro.org, robh+dt@...nel.org,
        mark.rutland@....com, linux-arm-msm@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] arm64: dts: msm8916-longcheer-l8150: Enable WCNSS
 for WiFi and BT

On Sat, Oct 12, 2019 at 07:58:20PM +0500, nikitos.tr@...il.com wrote:
> From: Nikita Travkin <nikitos.tr@...il.com>
> 
> WCNSS is used on L8150 for WiFi and BT.
> Its firmware isn't relocatable and must be loaded at specific address.
> 
> Signed-off-by: Nikita Travkin <nikitos.tr@...il.com>

Reviewed-by: Stephan Gerhold <stephan@...hold.net>

> ---
>  .../boot/dts/qcom/msm8916-longcheer-l8150.dts      | 14 ++++++++++++++
>  1 file changed, 14 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/msm8916-longcheer-l8150.dts b/arch/arm64/boot/dts/qcom/msm8916-longcheer-l8150.dts
> index 2b28e383fd0b..e4d467e7dedb 100644
> --- a/arch/arm64/boot/dts/qcom/msm8916-longcheer-l8150.dts
> +++ b/arch/arm64/boot/dts/qcom/msm8916-longcheer-l8150.dts
> @@ -18,6 +18,16 @@
>  		stdout-path = "serial0";
>  	};
>  
> +	reserved-memory {
> +		// wcnss.mdt is not relocatable, so it must be loaded at 0x8b600000
> +		/delete-node/ wcnss@...00000;
> +
> +		wcnss_mem: wcnss@...00000 {
> +			reg = <0x0 0x8b600000 0x0 0x600000>;
> +			no-map;
> +		};
> +	};
> +
>  	soc {
>  		sdhci@...4000 {
>  			status = "okay";
> @@ -68,6 +78,10 @@
>  			};
>  		};
>  
> +		wcnss@...b000 {
> +			status = "okay";
> +		};
> +
>  		/*
>  		 * Attempting to enable these devices causes a "synchronous
>  		 * external abort". Suspected cause is that the debug power
> -- 
> 2.19.1
>