[PATCH v5 0/3] Adding brcmstb-hwspinlock support

[Kamal Dasu <kamal.dasu@broadcom.com>]

This is a standalone patch for the hardware semaphore feature for
all brcmstb SoCs that have the same hardware semaphore registers.

The semaphore registers belong to the sundry hardware block. The
node describes only the semaphore register range carved out of the
larger sundry block address space.

The compatible string uses "brcm,bcm7038-sun-top-ctrl-semaphore"
based on the BCM7038 SoC.

The patch has been tested to work as builtin as well as a module.

v5 changes:
Addressed review comments from Krzysztof Kozlowski:
 - Changed compatible to "brcm,bcm7038-sun-top-ctrl-semaphore"
   using the SoC.


v4 changes:
Addressed review comments from Krzysztof Kozlowski and Rob Herring:
 - Renamed compatible from "brcm,brcmstb-hwspinlock" to
   "brcm,brcmstb-sun-top-ctrl-semaphore" to use the hardware name
 - Added description block to the DT binding YAML explaining what
   the semaphore registers are and their relationship to the sundry
   block
 - Fixed typo in Kconfig "Setttop" -> "Settop"
 - Fixed email typo in MODULE_AUTHOR

v3 changes:
Added detailed explanation in the all commit messages as per review
comments
 - Added description of 'sundry' ip block that the hardware semaphore
   belongs to
 - Added reasoning for using common compatible string

v2 changes:
Addressed following review comments:
 - fixed ordering of obj brcmstb_hwspinlock.o in Makefile
 - fixed ordering of 'config HWSPINLOCK_BRCMSTB' block in Kconfig
 - Renamed BRCMSTB_MAX_SEMAPHORES to BRCMSTB_NUM_SEMAPHORES
 - Removed unnecessary platform_set_drvdata(pdev, bank);

Also addressing duplicate PATCH 1/3 sent in error as part of v1 change.

v1 changes:
based on fixes made to Initial patch:
Link: https://github.com/intel-lab-lkp/linux/commits/
  Kamal-Dasu/dt-bindings-brcmstb-hwspinlock-support-
  for-hwspinlock/20250712-034624
Link: https://lore.kernel.org/r/20250711154221.928164-
  4-kamal.dasu%40broadcom.com
  [PATCH 2/4] hwspinlock: brcmstb hardware semaphore support

All the review comments and build warning have been fixed.

Kamal Dasu (3):
  dt-bindings: hwlock: Adding brcmstb-hwspinlock support
  hwspinlock: brcmstb hardware semaphore support
  MAINTAINERS: adding entry for BRCMSTB HWSPINLOCK driver

 .../hwlock/brcm,brcmstb-hwspinlock.yaml       | 45 +++++++++
 MAINTAINERS                                   |  8 ++
 drivers/hwspinlock/Kconfig                    | 11 ++-
 drivers/hwspinlock/Makefile                   |  1 +
 drivers/hwspinlock/brcmstb_hwspinlock.c       | 96 +++++++++++++++++++
 5 files changed, 160 insertions(+), 1 deletion(-)
 create mode 100644 Documentation/devicetree/bindings/hwlock/brcm,brcmstb-hwspinlock.yaml
 create mode 100644 drivers/hwspinlock/brcmstb_hwspinlock.c

-- 
2.34.1