The BCM7038 watchdog driver needs to be able to obtain a specific clock
name on BCM63xx platforms which is the "periph" clock ticking at 50MHz.
make it possible to specify the clock name to obtain via platform data.
Reviewed-by: Guenter Roeck <linux@xxxxxxxxxxxx>
Signed-off-by: Florian Fainelli <f.fainelli@xxxxxxxxx>
---
drivers/watchdog/bcm7038_wdt.c | 8 +++++++-
include/linux/platform_data/bcm7038_wdt.h | 8 ++++++++
2 files changed, 15 insertions(+), 1 deletion(-)
create mode 100644 include/linux/platform_data/bcm7038_wdt.h
diff --git a/drivers/watchdog/bcm7038_wdt.c b/drivers/watchdog/bcm7038_wdt.c
index acaaa0005d5b..506cd7ef9c77 100644
--- a/drivers/watchdog/bcm7038_wdt.c
+++ b/drivers/watchdog/bcm7038_wdt.c
@@ -10,6 +10,7 @@
#include <linux/module.h>
#include <linux/of.h>
#include <linux/platform_device.h>
+#include <linux/platform_data/bcm7038_wdt.h>
#include <linux/pm.h>
#include <linux/watchdog.h>
@@ -133,8 +134,10 @@ static void bcm7038_clk_disable_unprepare(void *data)
static int bcm7038_wdt_probe(struct platform_device *pdev)
{
+ struct bcm7038_wdt_platform_data *pdata = pdev->dev.platform_data;
struct device *dev = &pdev->dev;
struct bcm7038_watchdog *wdt;
+ const char *clk_name = NULL;
int err;
wdt = devm_kzalloc(dev, sizeof(*wdt), GFP_KERNEL);
@@ -147,7 +150,10 @@ static int bcm7038_wdt_probe(struct platform_device *pdev)
if (IS_ERR(wdt->base))
return PTR_ERR(wdt->base);
- wdt->clk = devm_clk_get(dev, NULL);
+ if (pdata && pdata->clk_name)
+ clk_name = pdata->clk_name;
+
+ wdt->clk = devm_clk_get(dev, clk_name);
/* If unable to get clock, use default frequency */
if (!IS_ERR(wdt->clk)) {
err = clk_prepare_enable(wdt->clk);
diff --git a/include/linux/platform_data/bcm7038_wdt.h b/include/linux/platform_data/bcm7038_wdt.h
new file mode 100644
index 000000000000..e18cfd9ec8f9
--- /dev/null
+++ b/include/linux/platform_data/bcm7038_wdt.h
@@ -0,0 +1,8 @@
+#ifndef __BCM7038_WDT_PDATA_H
+#define __BCM7038_WDT_PDATA_H
+
+struct bcm7038_wdt_platform_data {
+ const char *clk_name;
+};
+
+#endif /* __BCM7038_WDT_PDATA_H */
--
2.25.1
