Re: [PATCH v8 6/9] arm64: dts: ti: var-som-am62p: Fix wkup R5F memory region size

[Stefano Radaelli]

On Thu, Sep 3, 2026 at 9:40 AM Markus Schneider-Pargmann (TI)
<msp@xxxxxxxxxxxx> wrote:
>
> The wkup_r5fss0_core0_memory_region was reserved with
> 0x01e00000 but the MCU SDK linker for the wkup R5F firmware on
> AM62P defines the DM code/data DDR footprint differently:
>
>     /* DDR for DM R5F code/data [ size 27 MiB + 396 KB ] */
>     DDR                         : ORIGIN = 0x9CAA5000 LENGTH = 0x1B63000
>
> which results in an end at 0x9e608000. For this memory region which
> starts at 0x9c900000 this means a length of:
>
>     0x9e608000 - 0x9c900000 = 0x1d08000
>
> Link: https://github.com/TexasInstruments/mcupsdk-core-k3/blob/k3_main/examples/drivers/ipc/ipc_rpmsg_echo_linux/am62px-sk/wkup-r5fss0-0_freertos/ti-arm-clang/linker.cmd
> Fixes: 571562e76458 ("arm64: dts: ti: Add support for Variscite VAR-SOM-AM62P")
> Signed-off-by: Markus Schneider-Pargmann (TI) <msp@xxxxxxxxxxxx>
> ---
>  arch/arm64/boot/dts/ti/k3-am62p5-var-som.dtsi | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/arch/arm64/boot/dts/ti/k3-am62p5-var-som.dtsi b/arch/arm64/boot/dts/ti/k3-am62p5-var-som.dtsi
> index 8a8dec80cb30..3d1a2c5bc464 100644
> --- a/arch/arm64/boot/dts/ti/k3-am62p5-var-som.dtsi
> +++ b/arch/arm64/boot/dts/ti/k3-am62p5-var-som.dtsi
> @@ -71,7 +71,7 @@ wkup_r5fss0_core0_dma_memory_region: r5f-dma-memory@9c800000 {
>
>                 wkup_r5fss0_core0_memory_region: r5f-memory@9c900000 {
>                         compatible = "shared-dma-pool";
> -                       reg = <0x00 0x9c900000 0x00 0x01e00000>;
> +                       reg = <0x00 0x9c900000 0x00 0x01d08000>;
>                         no-map;
>                 };
>
>
> --
> 2.55.0
>

Reviewed-by: Stefano Radaelli <stefano.r@xxxxxxxxxxxxx>

Thanks!