Linux Tegra architecture development
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From: Kartik Rajput <kkartik@nvidia.com>
To: <daniel.lezcano@kernel.org>, <tglx@kernel.org>,
	<wim@linux-watchdog.org>, <linux@roeck-us.net>,
	<thierry.reding@kernel.org>, <jonathanh@nvidia.com>,
	<kkartik@nvidia.com>, <linux-watchdog@vger.kernel.org>,
	<linux-kernel@vger.kernel.org>, <linux-tegra@vger.kernel.org>
Subject: [PATCH 2/4] clocksource/drivers/timer-tegra186: Correct num_wdts for Tegra186 and Tegra234
Date: Thu, 7 May 2026 21:15:55 +0530	[thread overview]
Message-ID: <20260507154557.2082697-3-kkartik@nvidia.com> (raw)
In-Reply-To: <20260507154557.2082697-1-kkartik@nvidia.com>

On Tegra186 and Tegra234, WDT2 is connected to the Audio Processing
Engine (APE) and cannot be accessed from Linux. Only WDT0 and WDT1
are accessible to Linux.

Update num_wdts from 3 to 2 for both Tegra186 and Tegra234 to reflect
the actual number of watchdogs available to Linux.

Signed-off-by: Kartik Rajput <kkartik@nvidia.com>
---
 drivers/clocksource/timer-tegra186.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/clocksource/timer-tegra186.c b/drivers/clocksource/timer-tegra186.c
index bfe16d2d5104..fd82a73ab2d2 100644
--- a/drivers/clocksource/timer-tegra186.c
+++ b/drivers/clocksource/timer-tegra186.c
@@ -511,12 +511,12 @@ static SIMPLE_DEV_PM_OPS(tegra186_timer_pm_ops, tegra186_timer_suspend,
 
 static const struct tegra186_timer_soc tegra186_timer = {
 	.num_timers = 10,
-	.num_wdts = 3,
+	.num_wdts = 2,
 };
 
 static const struct tegra186_timer_soc tegra234_timer = {
 	.num_timers = 16,
-	.num_wdts = 3,
+	.num_wdts = 2,
 };
 
 static const struct of_device_id tegra186_timer_of_match[] = {
-- 
2.43.0


  parent reply	other threads:[~2026-05-07 15:46 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-05-07 15:45 [PATCH 0/4] Add support for Kernel WDT Kartik Rajput
2026-05-07 15:45 ` [PATCH 1/4] clocksource/drivers/timer-tegra186: Fix support for multiple watchdog instances Kartik Rajput
2026-05-07 15:45 ` Kartik Rajput [this message]
2026-05-07 15:45 ` [PATCH 3/4] clocksource/drivers/timer-tegra186: Register all accessible watchdog timers Kartik Rajput
2026-05-07 15:45 ` [PATCH 4/4] clocksource/drivers/timer-tegra186: Reserve and service a kernel watchdog Kartik Rajput

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