Re: [PATCH 0/5] Exynos850 APM-to-AP mailbox support

Krzysztof Kozlowski
2026-03-21T10:44:36Z

On Fri, Mar 20, 2026 at 09:15:12PM +0000, Alexey Klimov wrote:
> Hi all,
>
> This patch series introduces support for the APM-to-AP mailbox on the
> Exynos850 SoC. This mailbox is required for communicating with the APM
> co-processor using ACPM.
>
> The Exynos850 mailbox operates similarly to the existing gs101
> implementation, but the register offsets and IRQ mask bits differ.
> This series abstracts these differences into platform-specific data
> structures matched via the device tree.
>
> Also, it requires APM-to-AP mailbox clock in CMU_APM block.
>
> In theory this can be split into two series with correct dependecies:
> device tree node requires clock changes to be merged. The suggestion
> is to let this go through Samsung SoC tree with corresponding acks
> if it is okay.

I don't understand why this cannot be split into two seris
*practically*. What is exactly the dependency between mailbox and DTS,
that it had to be combined here?

Best regards,
Krzysztof