TTC device can act either as clocksource/clockevent or
PWM generator, it would be decided by pwm-cells property.
TTC PWM feature would be supported through separate driver
based on PWM framework.
If pwm-cells property is present in TTC node, it would be
treated as PWM device, and clocksource driver should just
skip it.
Signed-off-by: Mubin Sayyed <mubin.sayyed@xxxxxxx>
---
Changes for v2:
- Added comment regarding pwm-cells property
---
drivers/clocksource/timer-cadence-ttc.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/drivers/clocksource/timer-cadence-ttc.c b/drivers/clocksource/timer-cadence-ttc.c
index 32daaac9b132..f8fcb1a4bdd0 100644
--- a/drivers/clocksource/timer-cadence-ttc.c
+++ b/drivers/clocksource/timer-cadence-ttc.c
@@ -477,6 +477,13 @@ static int __init ttc_timer_probe(struct platform_device *pdev)
u32 timer_width = 16;
struct device_node *timer = pdev->dev.of_node;
+ /*
+ * If pwm-cells property is present in TTC node,
+ * it would be treated as PWM device.
+ */
+ if (of_property_read_bool(timer, "#pwm-cells"))
+ return -ENODEV;
+
if (initialized)
return 0;
--
2.25.1
