[PATCH] watchdog: imxwd: get and enable clock

[Steffen Trumtrar]

This it (at least) necessary for i.MX7s or otherwise barebox will hang
when trying to access the registers of WDOG2/3/4.

Signed-off-by: Steffen Trumtrar <s.trumt...@pengutronix.de>
---
 drivers/watchdog/imxwd.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/drivers/watchdog/imxwd.c b/drivers/watchdog/imxwd.c
index b2cfd1cd3a31..26c62b7bcb31 100644
--- a/drivers/watchdog/imxwd.c
+++ b/drivers/watchdog/imxwd.c
@@ -21,6 +21,7 @@
 #include <restart.h>
 #include <watchdog.h>
 #include <reset_source.h>
+#include <linux/clk.h>
 
 struct imx_wd;
 
@@ -224,6 +225,7 @@ static int imx_wd_probe(struct device_d *dev)
 {
        struct resource *iores;
        struct imx_wd *priv;
+       struct clk *clk;
        void *ops;
        int ret;
 
@@ -237,6 +239,15 @@ static int imx_wd_probe(struct device_d *dev)
                dev_err(dev, "could not get memory region\n");
                return PTR_ERR(iores);
        }
+
+       clk = clk_get(dev, NULL);
+       if (IS_ERR(clk))
+               return PTR_ERR(clk);
+
+       ret = clk_enable(clk);
+       if (ret)
+               return ret;
+
        priv->base = IOMEM(iores->start);
        priv->ops = ops;
        priv->wd.set_timeout = imx_watchdog_set_timeout;
-- 
2.29.2


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