linux-kernel - [tip: timers/core] clocksource/drivers/timer-ti-dm: Don't fail probe if int not found

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Message-ID: <173152925155.32228.6547337257924138852.tip-bot2@tip-bot2>
Date: Wed, 13 Nov 2024 20:20:51 -0000
From: "tip-bot2 for Judith Mendez" <tip-bot2@...utronix.de>
To: linux-tip-commits@...r.kernel.org
Cc: Judith Mendez <jm@...com>, Daniel Lezcano <daniel.lezcano@...aro.org>,
 x86@...nel.org, linux-kernel@...r.kernel.org
Subject: [tip: timers/core] clocksource/drivers/timer-ti-dm: Don't fail probe
 if int not found

The following commit has been merged into the timers/core branch of tip:

Commit-ID:     314413317b6d78cc76cd48f0296fde9fcfdec400
Gitweb:        https://git.kernel.org/tip/314413317b6d78cc76cd48f0296fde9fcfdec400
Author:        Judith Mendez <jm@...com>
AuthorDate:    Fri, 11 Oct 2024 12:52:03 -05:00
Committer:     Daniel Lezcano <daniel.lezcano@...aro.org>
CommitterDate: Wed, 13 Nov 2024 13:49:33 +01:00

clocksource/drivers/timer-ti-dm: Don't fail probe if int not found

Some timers may not have an interrupt routed to the A53 GIC, but the
timer PWM functionality can still be used by Linux Kernel. Therefore,
do not fail probe if interrupt is not found and ti,timer-pwm exists.

Signed-off-by: Judith Mendez <jm@...com>
Link: https://lore.kernel.org/r/20241011175203.1040568-1-jm@ti.com
Signed-off-by: Daniel Lezcano <daniel.lezcano@...aro.org>
---
 drivers/clocksource/timer-ti-dm.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/clocksource/timer-ti-dm.c b/drivers/clocksource/timer-ti-dm.c
index b7a34b1..3666d94 100644
--- a/drivers/clocksource/timer-ti-dm.c
+++ b/drivers/clocksource/timer-ti-dm.c
@@ -1104,8 +1104,12 @@ static int omap_dm_timer_probe(struct platform_device *pdev)
 		return  -ENOMEM;
 
 	timer->irq = platform_get_irq(pdev, 0);
-	if (timer->irq < 0)
-		return timer->irq;
+	if (timer->irq < 0) {
+		if (of_property_read_bool(dev->of_node, "ti,timer-pwm"))
+			dev_info(dev, "Did not find timer interrupt, timer usable in PWM mode only\n");
+		else
+			return timer->irq;
+	}
 
 	timer->io_base = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(timer->io_base))