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watchdog: realtek-otto: enable clock before using I/O

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As the watchdog is normally on the same bus as the UART peripheral, the
bootloader will have ensured the bus' clock is up and running before the
watchdog driver is probed. Nevertheless, let's do things the right way
and enable the watchdog's clock before performing I/O accesses.

Signed-off-by: Sander Vanheule <sander@svanheule.net>
Link: https://lore.kernel.org/r/20260515212351.752054-3-sander@svanheule.net
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Sander Vanheule 2026-05-15 23:23:51 +02:00 committed by Guenter Roeck
parent 05d871c519
commit 1147eb0dc2
1 changed files with 4 additions and 4 deletions
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8
drivers/watchdog/realtek_otto_wdt.c
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@ -296,15 +296,15 @@ static int otto_wdt_probe(struct platform_device *pdev)
if (IS_ERR(ctrl->base))
return PTR_ERR(ctrl->base);
ret = otto_wdt_probe_clk(ctrl);
if (ret)
return ret;
/* Clear any old interrupts and reset initial state */
iowrite32(OTTO_WDT_INTR_PHASE_1 | OTTO_WDT_INTR_PHASE_2,
ctrl->base + OTTO_WDT_REG_INTR);
iowrite32(OTTO_WDT_CTRL_DEFAULT, ctrl->base + OTTO_WDT_REG_CTRL);
ret = otto_wdt_probe_clk(ctrl);
if (ret)
return ret;
ctrl->irq_phase1 = platform_get_irq_byname(pdev, "phase1");
if (ctrl->irq_phase1 < 0)
return ctrl->irq_phase1;