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

[Francesco Dolcini <francesco@dolcini.it>]

On Wed, Sep 16, 2026 at 12:17:42PM +0200, Markus Schneider-Pargmann wrote:
> Hi Francesco,
> 
> On Fri Sep 11, 2026 at 7:24 AM CEST, Francesco Dolcini wrote:
> > 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@baylibre.com>
> > ...
> >
> >> 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.
> 
> I don't see any bootph-* flags for any of the related memory regions in
> k3-am62p5-verdin-wifi-dev-u-boot.dtsi. Is it in a different dtsi?

What I meant is that any bootph- property is in
arch/arm/dts/k3-am6p25-verdin-wifi-dev-u-boot.dtsi 

And I would not start adding spreading this in 2 different places.

Francesco