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Date:   Sat, 28 Jan 2023 15:30:46 +0100
From:   Konrad Dybcio <konrad.dybcio@...aro.org>
To:     Jamie Douglass <jamiemdouglass@...il.com>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     ~postmarketos/upstreaming@...ts.sr.ht, phone-devel@...r.kernel.org,
        Petr Vorel <petr.vorel@...il.com>,
        Dominik Kobinski <dominikkobinski314@...il.com>,
        Konrad Dybico <konrad.dybico@...aro.org>
Subject: Re: [PATCH] arm64: dts: qcom: msm8992-lg-bullhead: Correct memory
 overlap with SMEM region



On 28.01.2023 06:52, Jamie Douglass wrote:
> A previously committed reserved memory region was overlapping with the
> SMEM memory region, causing an error message in dmesg:
> 	OF: reserved mem: OVERLAP DETECTED!
> 	reserved@...0000 (0x0000000005000000--0x0000000007200000)
> 	overlaps with smem_region@...0000
> 	(0x0000000006a00000--0x0000000006c00000)
> This patch splits the previous reserved memory region into two
> reserved sections either side of the SMEM memory region.
> 
> Signed-off-by: Jamie Douglass <jamiemdouglass@...il.com>
> ---
>  arch/arm64/boot/dts/qcom/msm8992-lg-bullhead.dtsi | 9 +++++++--
>  1 file changed, 7 insertions(+), 2 deletions(-)
> 
> diff --git a/arch/arm64/boot/dts/qcom/msm8992-lg-bullhead.dtsi b/arch/arm64/boot/dts/qcom/msm8992-lg-bullhead.dtsi
> index 79de9cc395c4..5e375ea73c79 100644
> --- a/arch/arm64/boot/dts/qcom/msm8992-lg-bullhead.dtsi
> +++ b/arch/arm64/boot/dts/qcom/msm8992-lg-bullhead.dtsi
> @@ -53,8 +53,13 @@ cont_splash_mem: memory@...0000 {
>  			no-map;
>  		};
>  
> -		removed_region: reserved@...0000 {
> -			reg = <0 0x05000000 0 0x2200000>;
> +		reserved@...0000 {
> +			reg = <0x0 0x05000000 0x0 0x1a00000>;
> +			no-map;
> +		};
> +
> +		reserved@...0000 {
> +			reg = <0x0 0x06c00000 0x0 0x400000>;
I think you made this 0x200000 too small, unless there
is supposed to be functional change.

Konrad
>  			no-map;
>  		};
>  	};

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