Commit d6b9c679 authored by Florian Fainelli's avatar Florian Fainelli Committed by Wim Van Sebroeck
Browse files

watchdog: bcm7038_wdt: Support platform data configuration 



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.

Signed-off-by: default avatarFlorian Fainelli <f.fainelli@gmail.com>
Reviewed-by: default avatarGuenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20211112224636.395101-4-f.fainelli@gmail.com


Signed-off-by: default avatarGuenter Roeck <linux@roeck-us.net>
Signed-off-by: default avatarWim Van Sebroeck <wim@linux-watchdog.org>
parent 17fffe91

drivers/watchdog/bcm7038_wdt.c

+7 −1
Original line number Diff line number Diff line
@@ -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);

include/linux/platform_data/bcm7038_wdt.h

0 → 100644
+8 −0
Original line number Diff line number Diff line 
#ifndef __BCM7038_WDT_PDATA_H

#define __BCM7038_WDT_PDATA_H



struct bcm7038_wdt_platform_data {

	const char *clk_name;

};



#endif /* __BCM7038_WDT_PDATA_H */