linux-kernel - Re: [PATCH] arm64: dts: qcom: sc7180: Make MSA memory fixed for wifi

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Message-ID: <20191205005646.GL228856@google.com>
Date:   Wed, 4 Dec 2019 16:56:46 -0800
From:   Matthias Kaehlcke <mka@...omium.org>
To:     Rakesh Pillai <pillair@...eaurora.org>
Cc:     devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org
Subject: Re: [PATCH] arm64: dts: qcom: sc7180: Make MSA memory fixed for wifi

On Wed, Dec 04, 2019 at 09:20:18AM +0000, Rakesh Pillai wrote:

> arm64: dts: qcom: sc7180: Make MSA memory fixed for wifi

This is not really done for sc7180, but only for the sc7180-idp,
which should be reflected in the subject (i.e. s/sc7180/sc7180-idp/)

> The MSA memory is at a fixed offset, which will be
> a part of reserved memory. Add this flag to indicate
> that wifi in sc7180 will use a fixed memory for MSA.

ditto, say it's the IDP

> Signed-off-by: Rakesh Pillai <pillair@...eaurora.org>
> ---
> This patchet is dependent on the below changes
> arm64: dts: qcom: sc7180: Add WCN3990 WLAN module device node (https://lore.kernel.org/patchwork/patch/1162434/)
> dt: bindings: add dt entry flag to skip SCM call for msa region (https://patchwork.ozlabs.org/patch/1192725/)
> ---
>  arch/arm64/boot/dts/qcom/sc7180-idp.dts | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sc7180-idp.dts b/arch/arm64/boot/dts/qcom/sc7180-idp.dts
> index 8a6a760..b2ca143f 100644
> --- a/arch/arm64/boot/dts/qcom/sc7180-idp.dts
> +++ b/arch/arm64/boot/dts/qcom/sc7180-idp.dts
> @@ -250,6 +250,7 @@
>  
>  &wifi {
>  	status = "okay";
> +	qcom,msa_fixed_perm;
>  };
>  
>  /* PINCTRL - additions to nodes defined in sc7180.dtsi */
> -- 
> 2.7.4
>