diff options
| author | Stefan Wahren <stefan.wahren@i2se.com> | 2021-06-06 15:16:12 +0300 |
|---|---|---|
| committer | Wim Van Sebroeck <wim@linux-watchdog.org> | 2021-08-22 11:28:08 +0300 |
| commit | a4f95810e3fbc15f077880aef8c787489ec4a8b7 (patch) | |
| tree | c253d409dac3d7257752559424bf8b0f582071fb /drivers/watchdog/bcm2835_wdt.c | |
| parent | 14244b7c04d6611388e9312059df11b9c39a4f6c (diff) | |
| download | linux-a4f95810e3fbc15f077880aef8c787489ec4a8b7.tar.xz | |
watchdog: bcm2835_wdt: consider system-power-controller property
Until now all Raspberry Pi boards used the power off function of the SoC.
But the Raspberry Pi 400 uses gpio-poweroff for the whole board which
possibly cannot register the poweroff handler because the it's
already registered by this watchdog driver. So consider the
system-power-controller property for registering, which is already
defined in soc/bcm/brcm,bcm2835-pm.txt .
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Reviewed-by: Nicolas Saenz Julienne <nsaenz@kernel.org>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/1622981777-5023-3-git-send-email-stefan.wahren@i2se.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
Diffstat (limited to 'drivers/watchdog/bcm2835_wdt.c')
| -rw-r--r-- | drivers/watchdog/bcm2835_wdt.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/drivers/watchdog/bcm2835_wdt.c b/drivers/watchdog/bcm2835_wdt.c index dec6ca019bea..94907176a0e4 100644 --- a/drivers/watchdog/bcm2835_wdt.c +++ b/drivers/watchdog/bcm2835_wdt.c @@ -205,9 +205,13 @@ static int bcm2835_wdt_probe(struct platform_device *pdev) if (err) return err; - if (pm_power_off == NULL) { - pm_power_off = bcm2835_power_off; - bcm2835_power_off_wdt = wdt; + if (of_device_is_system_power_controller(pdev->dev.parent->of_node)) { + if (!pm_power_off) { + pm_power_off = bcm2835_power_off; + bcm2835_power_off_wdt = wdt; + } else { + dev_info(dev, "Poweroff handler already present!\n"); + } } dev_info(dev, "Broadcom BCM2835 watchdog timer"); |