[PATCH v2 0/3] Exynos850 APM-to-AP mailbox support

[Alexey Klimov]

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. These
were marged already (thanks Krzysztof!) so they are dropped from
this v2.

Please also advice if mailbox change should be split out as a separate
patch.

Will be appreciated if it can be tested on gs101 to make sure that I
didn't break anything, I don't have dev gs101 devices.

Signed-off-by: Alexey Klimov <alexey.klimov@xxxxxxxxxx>
---
Changes in v2:
- dropped clock patches (they seem to be merged);
- patch 3: updated commit description mentioning that
  exynos850 is not compatible to gs101 mbox (as suggested by Krzysztof);
- fixed comment description for struct exynos_mbox_driver_data
  (reported by kernel test robot <lkp@xxxxxxxxx>);
- Link to v1: https://lore.kernel.org/r/20260320-exynos850-ap2apm-mailbox-v1-0-983eb3f296fc@xxxxxxxxxx

---
Alexey Klimov (3):
      dt-bindings: mailbox: google,gs101-mbox: Add samsung,exynos850-mbox
      mailbox: exynos: Add support for Exynos850 mailbox
      arm64: dts: exynos850: Add ap2apm mailbox

 .../bindings/mailbox/google,gs101-mbox.yaml        |  4 +-
 arch/arm64/boot/dts/exynos/exynos850.dtsi          |  9 +++
 drivers/mailbox/exynos-mailbox.c                   | 67 +++++++++++++++++++++-
 3 files changed, 76 insertions(+), 4 deletions(-)
---
base-commit: bd0f139e5fc11182777b81cefc3893ea508544ec
change-id: 20260320-exynos850-ap2apm-mailbox-cff0c8d69898

Best regards,
-- 
Alexey Klimov <alexey.klimov@xxxxxxxxxx>