[PATCH 2/8] arm64: dts: qcom: sm8450: Remove unneeded reserved memory nodes

[Konrad Dybcio]

On 6/23/26 2:54 AM, Esteban Urrutia via B4 Relay wrote:
> From: Esteban Urrutia <esteuwu at proton.me>
> 
> These nodes are not present on downstream device trees and only take
> memory away from the AP.
> No crashes occur without these nodes, so remove them.
> 
> Signed-off-by: Esteban Urrutia <esteuwu at proton.me>
> ---
>  arch/arm64/boot/dts/qcom/sm8450.dtsi | 15 ---------------
>  1 file changed, 15 deletions(-)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sm8450.dtsi b/arch/arm64/boot/dts/qcom/sm8450.dtsi
> index 56cb6e959e4e..e34e3c05bf74 100644
> --- a/arch/arm64/boot/dts/qcom/sm8450.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sm8450.dtsi
> @@ -752,11 +752,6 @@ oem_vm_mem: memory at bb000000 {
>  			no-map;
>  		};
>  
> -		mte_mem: memory at c0000000 {
> -			reg = <0x0 0xc0000000 0x0 0x20000000>;
> -			no-map;
> -		};

This is mentioned in the memory map description, but is not part
of it.

I booted up a 8450 HDK and it doesn't even have MTE, so it's
probably valid

> -
>  		qheebsp_reserved_mem: memory at e0000000 {
>  			reg = <0x0 0xe0000000 0x0 0x600000>;
>  			no-map;
> @@ -806,16 +801,6 @@ qtee_mem: memory at e9b00000 {
>  			reg = <0x0 0xe9b00000 0x0 0x500000>;
>  			no-map;
>  		};
> -
> -		trusted_apps_mem: memory at ea000000 {
> -			reg = <0x0 0xea000000 0x0 0x3900000>;
> -			no-map;
> -		};
> -
> -		trusted_apps_ext_mem: memory at ed900000 {
> -			reg = <0x0 0xed900000 0x0 0x3b00000>;
> -			no-map;
> -		};

These exist in the memory map, but I'd guess they may be unused if
you don't load any trusted apps

Konrad