Re: [PATCH v8 1/9] arm64: dts: ti: k3-am62a-phycore-som: Fix wkup R5F memory region size

[Andrew Davis]

On 9/3/26 7:39 AM, Markus Schneider-Pargmann (TI) wrote:
> The wkup_r5fss0_core0_memory_region was reserved with only
> 0x0f00000 but the MCU SDK linker for the wkup R5F firmware on
> AM62A defines the DM code/data DDR footprint differently:
>
>      /* DDR for DM R5F code/data [ size 27 MiB + 364 KB ] */
>      DDR                         : ORIGIN = 0x9CAA5000 LENGTH = 0x1B5B000
>
> which results in an end at 0x9e600000. For this memory region which
> starts at 0x9c900000 this means a length of:
>
>      0x9e600000 - 0x9c900000 = 0x1d00000
>
> AM62A additionally has a second DM firmware for edgeai whose highest
> section end address reaches 0x9e700000, so the region should end there:
>
>      0x9e700000 - 0x9c900000 = 0x1e00000
>
> Link: https://github.com/TexasInstruments/mcupsdk-core-k3/blob/k3_main/examples/drivers/ipc/ipc_rpmsg_echo_linux/am62ax-sk/r5fss0-0_freertos/ti-arm-clang/linker.cmd

Ugh, I really wish the MCU-SDK folks would have stayed within the
usual 16MB boundary.. Oh well, since there is firmware out there now
with this larger size our carveouts will just have to match that,

Acked-by: Andrew Davis <afd@xxxxxx>

> Fixes: 8dd0ac27fcd1 ("arm64: dts: ti: k3-am62a-phycore-som: Enable Co-processors")
> Signed-off-by: Markus Schneider-Pargmann (TI) <msp@xxxxxxxxxxxx>
> ---
>   arch/arm64/boot/dts/ti/k3-am62a-phycore-som.dtsi | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/arch/arm64/boot/dts/ti/k3-am62a-phycore-som.dtsi b/arch/arm64/boot/dts/ti/k3-am62a-phycore-som.dtsi
> index de4048a3564b..53c096da68b5 100644
> --- a/arch/arm64/boot/dts/ti/k3-am62a-phycore-som.dtsi
> +++ b/arch/arm64/boot/dts/ti/k3-am62a-phycore-som.dtsi
> @@ -67,7 +67,7 @@ wkup_r5fss0_core0_dma_memory_region: memory@9c800000 {
>   
>   		wkup_r5fss0_core0_memory_region: memory@9c900000 {
>   			compatible = "shared-dma-pool";
> -			reg = <0x00 0x9c900000 0x00 0xf00000>;
> +			reg = <0x00 0x9c900000 0x00 0x1e00000>;
>   			no-map;
>   		};
>