[PATCH v2 0/2] Make TPS65219 poweroff handler conditional

[Akashdeep Kaur <a-kaur@ti.com>]

This series makes the TPS65219 PMIC poweroff handler registration
conditional based on device tree configuration, following standard
kernel patterns.

Currently, the TPS65219 driver unconditionally registers as the system
poweroff handler. This creates conflicts on platforms where alternative
poweroff mechanisms (such as TF-A firmware or other power controllers)
should handle system shutdown instead.

The standard kernel approach is to use the "system-power-controller"
device tree property to explicitly designate which component is
responsible for system poweroff operations.

Patch 1: Add "system-power-controller" property to AM62-LP-SK device
         tree, explicitly designating the TPS65219 PMIC as the system
         power controller for this platform. This property was missing
         only on AM62-LP-SK among all in-tree TPS65219-based devices.

Patch 2: Update TPS65219 driver to only register poweroff handler when
         "system-power-controller" property is present. This allows
         other systems using this PMIC to use alternative poweroff
         mechanisms.

Impact:
- AM62-LP-SK: No functional change (property added, handler still
  registers)
- Other TPS65219-based systems: Poweroff handler registration becomes
  opt-in via DT property

Tested on AM62-LP-SK - system poweroff works correctly.

Changes in v2:
- Addressed review feedback by removing comment on self explanatory code
- Link to v1: https://lore.kernel.org/all/20260310111846.1084623-1-a-kaur@ti.com/

Signed-off-by: Akashdeep Kaur <a-kaur@ti.com>

---

Akashdeep Kaur (2):
  arm64: dts: ti: k3-am62-lp-sk: Add system-power-controller
  mfd: tps65219: Make poweroff handler conditional on
    system-power-controller

 arch/arm64/boot/dts/ti/k3-am62-lp-sk.dts |  1 +
 drivers/mfd/tps65219.c                   | 14 ++++++++------
 2 files changed, 9 insertions(+), 6 deletions(-)

-- 
2.34.1