Re: [PATCH] arm64: dts: qcom: ipq5424: Add reserved memory for TF-A

From: Konrad Dybcio
Date: Tue Jun 24 2025 - 09:29:06 EST


On 6/24/25 12:36 PM, Kathiravan Thirumoorthy wrote:
> From: Vignesh Viswanathan <quic_viswanat@xxxxxxxxxxx>
>
> IPQ5424 supports both TZ and TF-A as secure software options and various
> DDR sizes. In most cases, TF-A or TZ is loaded at the same memory
> location, but in the 256MB DDR configuration TF-A is loaded at a different
> region.
>
> So, add the reserved memory node for TF-A and keep it disabled by default.
> During bootup, U-Boot will detect which secure software is running and
> enable or disable the node accordingly.
>
> Signed-off-by: Vignesh Viswanathan <quic_viswanat@xxxxxxxxxxx>
> Signed-off-by: Kathiravan Thirumoorthy <kathiravan.thirumoorthy@xxxxxxxxxxxxxxxx>
> ---

Can the said u-boot simply dynamically add the reservation then?

Konrad