[PATCH v3 0/2] Exynos850 AP-to-APM mailbox support

[Alexey Klimov]

This patch series introduces support for the AP-to-APM 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 (which was
already merged). I also dropped clk-list emails from this series.

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

Signed-off-by: Alexey Klimov <alexey.klimov at linaro.org>
---
Changes in v3:
- exynos850 dts change is split out to a separate patch;
- updated commit messages to a proper name AP-to-APM;
- added comment "ring the doorbell" right before generating an IRQ to APM;
- renamed regs callback names to intgr, intgr_shift, intmr, intmr_mask;
- Link to v2: https://lore.kernel.org/r/20260402-exynos850-ap2apm-mailbox-v2-0-ca5ffdff99d4@linaro.org

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 at intel.com>);
- Link to v1: https://lore.kernel.org/r/20260320-exynos850-ap2apm-mailbox-v1-0-983eb3f296fc@linaro.org

---
Alexey Klimov (2):
      dt-bindings: mailbox: google,gs101-mbox: Add samsung,exynos850-mbox
      mailbox: exynos: Add support for Exynos850 mailbox

 .../bindings/mailbox/google,gs101-mbox.yaml        |  4 +-
 drivers/mailbox/exynos-mailbox.c                   | 59 ++++++++++++++++++++--
 2 files changed, 59 insertions(+), 4 deletions(-)
---
base-commit: 0787c45ea08a13b5482e701fabc741877cf681f6
change-id: 20260320-exynos850-ap2apm-mailbox-cff0c8d69898

Best regards,
-- 
Alexey Klimov <alexey.klimov at linaro.org>