linux-kernel - [PATCH v8 0/3] clocksource: fix Tegra234 SoC Watchdog Timer.

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Message-ID: <20250507044311.3751033-1-robelin@nvidia.com>
Date: Wed, 7 May 2025 12:43:08 +0800
From: Robert Lin <robelin@...dia.com>
To: <thierry.reding@...il.com>, <daniel.lezcano@...aro.org>,
	<jonathanh@...dia.com>, <tglx@...utronix.de>, <pohsuns@...dia.com>
CC: <linux-kernel@...r.kernel.org>, <linux-tegra@...r.kernel.org>,
	<sumitg@...dia.com>, <linux-watchdog@...r.kernel.org>,
	<wim@...ux-watchdog.org>, <linux@...ck-us.net>, robelin <robelin@...dia.com>
Subject: [PATCH v8 0/3] clocksource: fix Tegra234 SoC Watchdog Timer.

From: robelin <robelin@...dia.com>

This set of patches includes a fix for watchdog for it may not bark
due to self-pinging and adds WDIOC_GETTIMELEFT support.

--
V8:
- Change WARN_ON() to WARN_ON_ONCE() to not spew too many message
- Use pre-exist DIV_ROUND_CLOSEST_ULL for the same math operation

V7:
- Fix formatting
- Consider overflow and warn if happens

V6:
- Fix timeleft value addition using unmatched time unit
- Use u64 type to maintain the microseconds value in case of overflow

V5:
- Print warning message if get unexpected value from the register

V4:
- Improve the precision of timeleft value
- Fix the unused variable warning

V3:
- Improve comment description
- Refactor to fit codeline within 80 columns
- Remove unused if(0) blocks


V2:
- Fix a compilation error, a warning and updates copyright
--


Pohsun Su (2):
  clocksource/drivers/timer-tegra186: add WDIOC_GETTIMELEFT support
  clocksource/drivers/timer-tegra186: fix watchdog self-pinging

robelin (1):
  clocksource/drivers/timer-tegra186: Remove unused bits

 drivers/clocksource/timer-tegra186.c | 100 +++++++++++++++++----------
 1 file changed, 63 insertions(+), 37 deletions(-)

-- 
2.34.1