[PATCH 0/3] thermal: samsung: acpm-tmu: Add Exynos850 support

[Alexey Klimov]

This series adds support for the Thermal Management Unit found on
the Samsung Exynos850 SoC to the existing acpm-tmu driver.

The acpm-tmu driver was recently introduced to support a hybrid thermal
architecture where hardware management is shared between the kernel and
the ACPM firmware. 

However, the distribution of responsibilities between the Application
Processor and the firmware varies depending on the SoC:

1. GS101 (Existing):
   The ACPM firmware handles sensor initialization, threshold configuration,
   and temperature reading via ACPM IPC. The kernel only uses MMIO to read
   the interrupt pending registers.

2. Exynos850 (This series):
   The firmware implements a much smaller subset of TMU IPC commands
   (temperature readings, TMU suspend/resume, basic TMU init).
   The driver should use direct MMIO register access to support the
   remaining functionality.

In this series the patch 2/3 prepares the acpm-tmu driver by moving the
hardcoded GS101 IPC calls into SoC-specific callbacks: tz_control,
tmu_init, tmu_update_thresholds, and tmu_check_and_clear_irqs.

The patch 3/3 implements actual Exynos850 support.

There are some updates to be made (rework defines a little bit
and get rid of hardcoded values in exynos850_tmu_init() but it will
be useful to get feedback about patch 2/3 which is refactoring
acpm-tmu to support more than one SoC.

Dependencies
============

This series is done on top of the following series from Tudor:
v8 gs101 acpm-tmu support
https://lore.kernel.org/linux-samsung-soc/20260603-acpm-tmu-v8-0-0f1810a356e6@xxxxxxxxxx/

Signed-off-by: Alexey Klimov <alexey.klimov@xxxxxxxxxx>
---
Alexey Klimov (3):
      dt-bindings: thermal: gs101-tmu: add Exynos850 compatible
      thermal: samsung: acpm-tmu: refactor SoC-specific operations into driver data
      thermal: samsung: acpm-tmu: add Exynos850 support

 .../bindings/thermal/google,gs101-tmu-top.yaml     |  26 +-
 drivers/thermal/samsung/acpm-tmu.c                 | 460 +++++++++++++++++++--
 2 files changed, 445 insertions(+), 41 deletions(-)
---
base-commit: a1c3227fc1a1cd83cd7fceb93406da4e37fe06eb
change-id: 20260708-acpm-tmu-e850-support-e02765ebc9e3
prerequisite-message-id: 20260603-acpm-tmu-v8-0-0f1810a356e6@xxxxxxxxxx
prerequisite-patch-id: 335add736ef8f6753c3bdd94f19747aa4b9e782b
prerequisite-patch-id: e254a5f13d367da94d4bd299304859baa9409f0b
prerequisite-patch-id: 45efb8d607e3380686135441c62eb6c2747e70e3
prerequisite-patch-id: 718107c8283ea4a449d9838b57966e1c319f32b5
prerequisite-patch-id: 45b02a84dacb09cd95969b638caa64960f73d242

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