On the Nuvoton WPCM450 SoC, with its upcoming clock driver, peripheral
clocks are individually gated and ungated. Therefore, the watchdog
driver must be able to ungate the watchdog clock.
Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@xxxxxxx>
---
drivers/watchdog/npcm_wdt.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/drivers/watchdog/npcm_wdt.c b/drivers/watchdog/npcm_wdt.c
index 28a24caa2627c..6d27f0e16188e 100644
--- a/drivers/watchdog/npcm_wdt.c
+++ b/drivers/watchdog/npcm_wdt.c
@@ -3,6 +3,7 @@
// Copyright (c) 2018 IBM Corp.
#include <linux/bitops.h>
+#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/kernel.h>
@@ -180,6 +181,7 @@ static int npcm_wdt_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct npcm_wdt *wdt;
+ struct clk *clk;
int irq;
int ret;
@@ -191,6 +193,13 @@ static int npcm_wdt_probe(struct platform_device *pdev)
if (IS_ERR(wdt->reg))
return PTR_ERR(wdt->reg);
+ clk = devm_clk_get_optional(&pdev->dev, NULL);
+ if (IS_ERR(clk))
+ return PTR_ERR(clk);
+
+ if (clk)
+ clk_prepare_enable(clk);
+
irq = platform_get_irq(pdev, 0);
if (irq < 0)
return irq;
--
2.35.1
