Re: [PATCH v8 9/9] arm64: dts: ti: Add wkup R5F nodes to pre-ram bootphase

[Francesco Dolcini]

Hello Markus

On Thu, Sep 03, 2026 at 02:39:30PM +0200, Markus Schneider-Pargmann (TI) wrote:
> For IO+DDR the wkup_r5fss0_core0 and the
> wkup_r5fss0_core0_lpm_metadata_region need to be accessed before RAM
> setup is done. These are used to read the lpm metadata region in
> which data is stored to resume. This needs to be done before RAM is
> in use to avoid overwriting data.
> 
> Add the bootph-pre-ram flag to the wkup_r5fss0_core0 node in both
> ipc-firmware dtsi files and to the lpm metadata region nodes of the
> AM62A and AM62P boards.
> 
> The board level bootph-pre-ram flag of k3-am62d2-evm.dts becomes
> redundant with the dtsi-wide flag and is dropped.
> 
> Signed-off-by: Markus Schneider-Pargmann (TI) <msp@xxxxxxxxxxxx>
...

> diff --git a/arch/arm64/boot/dts/ti/k3-am62p-verdin.dtsi b/arch/arm64/boot/dts/ti/k3-am62p-verdin.dtsi
> index 45ab9d947b3a..8976c0424cd1 100644
> --- a/arch/arm64/boot/dts/ti/k3-am62p-verdin.dtsi
> +++ b/arch/arm64/boot/dts/ti/k3-am62p-verdin.dtsi
> @@ -184,6 +184,7 @@ wkup_r5fss0_core0_lpm_metadata_region: memory@9ca08000 {
>  			compatible = "shared-dma-pool";
>  			reg = <0x00 0x9ca08000 0x00 0x1000>;
>  			no-map;
> +			bootph-pre-ram;
>  		};

verdin-am62p has the various bootph tags only in the U-Boot dtsi
(k3-am62p5-verdin-wifi-dev-u-boot.dtsi) as of now, I am not convinced it
is a good idea to just add this single one here.

Francesco