Re: [PATCH v4 6/9] arm64: dts : ti: k3-am68-sk-som: Add DDR carveout memory nodes for R5F

[Kumar, Udit]

On 9/6/2023 4:54 PM, Apurva Nandan wrote:
> Two carveout reserved memory nodes each have been added for each of the
> R5F remote processor device within both the MCU and MAIN domains for the
> TI K3 AM68 SK boards. These nodes are assigned to the respective rproc
> device nodes as well. The first region will be used as the DMA pool for
> the rproc device, and the second region will furnish the static carveout
> regions for the firmware memory.
>
> The current carveout addresses and sizes are defined statically for each
> device. The R5F processors do not have an MMU, and as such require the
> exact memory used by the firmwares to be set-aside. The firmware images
> do not require any RSC_CARVEOUT entries in their resource tables either
> to allocate the memory for firmware memory segments.
>
> Note that the R5F1 carveouts are needed only if the R5F cluster is
> running in Split (non-LockStep) mode. The reserved memory nodes can be
> disabled later on if there is no use-case defined to use the
> corresponding
> remote processor.
>
> Signed-off-by: Sinthu Raja <sinthu.raja@xxxxxx>
> Signed-off-by: Apurva Nandan <a-nandan@xxxxxx>
> ---
>   arch/arm64/boot/dts/ti/k3-am68-sk-som.dtsi | 156 +++++++++++++++++++++
>   1 file changed, 156 insertions(+)

Reviewed by: Udit Kumar<u-kumar1@xxxxxx>

> [...]