[PATCH 2/2] mfd: tps65219: Make poweroff handler conditional on system-power-controller

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

Currently, the TPS65219 driver unconditionally registers a poweroff
handler. This causes issues on systems where a different component
(such as TF-A firmware) should handle system poweroff instead.

Make the poweroff handler registration conditional based on the
"system-power-controller" device tree property. This follows the
standard kernel pattern where only the designated power controller
registers for system poweroff operations.

On systems where the property is absent, the PMIC will not register
a poweroff handler, allowing other poweroff mechanisms to function.

Signed-off-by: Akashdeep Kaur <a-kaur@ti.com>
---
 drivers/mfd/tps65219.c | 18 ++++++++++++------
 1 file changed, 12 insertions(+), 6 deletions(-)

diff --git a/drivers/mfd/tps65219.c b/drivers/mfd/tps65219.c
index 7275dcdb7c44..beb816707d8f 100644
--- a/drivers/mfd/tps65219.c
+++ b/drivers/mfd/tps65219.c
@@ -541,13 +541,19 @@ static int tps65219_probe(struct i2c_client *client)
 		return ret;
 	}
 
-	ret = devm_register_power_off_handler(tps->dev,
-					      tps65219_power_off_handler,
-					      tps);
-	if (ret) {
-		dev_err(tps->dev, "failed to register power-off handler: %d\n", ret);
-		return ret;
+	/*
+	 * Only register PMIC power-off handler if system-power-controller
+	 * property is present.
+	 */
+	if (of_device_is_system_power_controller(tps->dev->of_node)) {
+		ret = devm_register_power_off_handler(tps->dev,
+						      tps65219_power_off_handler,
+						      tps);
+		if (ret)
+			return dev_err_probe(tps->dev, ret,
+					"failed to register power-off handler\n");
 	}
+
 	return 0;
 }
 
-- 
2.34.1