Re: [PATCH 3/4] arm64: dts: qcom: sdm630: describe adsp_mem region properly

Konrad Dybcio
2026-04-15T09:52:22Z

On 4/15/26 11:40 AM, Nickolay Goppen wrote:
> Downstream [1] this region is marked as shared and reusable so
> describe it that way.
>
> [1]: https://github.com/xiaomi-sdm660/android_kernel_xiaomi_sdm660/blob/11-EAS/arch/arm/boot/dts/qcom/sdm660.dtsi#L448
>
> Signed-off-by: Nickolay Goppen <setotau@mainlining.org>
> ---

+Ekansh some insight, please?

We're giving away that memory via qcom_scm_assign_mem() anyway
and I would assume that making it not-"no-map" could introduce issues
when the OS tries to access that region

Konrad

> arch/arm64/boot/dts/qcom/sdm630.dtsi | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/arch/arm64/boot/dts/qcom/sdm630.dtsi b/arch/arm64/boot/dts/qcom/sdm630.dtsi
> index 4b47efdb57b2..13094b5e9339 100644
> --- a/arch/arm64/boot/dts/qcom/sdm630.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sdm630.dtsi
> @@ -495,8 +495,9 @@ venus_region: venus@9f800000 {
> };
>
> adsp_mem: adsp-region@f6000000 {
> + compatible = "shared-dma-pool";
> reg = <0x0 0xf6000000 0x0 0x800000>;
> - no-map;
> + reusable;
> };
>
> qseecom_mem: qseecom-region@f6800000 {
>