Commit 423fc66e authored by Jacky Bai's avatar Jacky Bai Committed by Wim Van Sebroeck
Browse files

wdog: imx7ulp: Enable wdog int_en bit for watchdog any reset 



The wdog INT_EN bit in CS register should be set to '1' to trigger
WDOG_ANY external reset on i.MX93.

Signed-off-by: default avatarJacky Bai <ping.bai@nxp.com>
Reviewed-by: default avatarPeng Fan <peng.fan@nxp.com>
Reviewed-by: default avatarGuenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20231010081909.2899101-1-ping.bai@nxp.com


Signed-off-by: default avatarGuenter Roeck <linux@roeck-us.net>
Signed-off-by: default avatarWim Van Sebroeck <wim@linux-watchdog.org>
parent 946af15b

drivers/watchdog/imx7ulp_wdt.c

+8 −0
Original line number Diff line number Diff line
@@ -23,6 +23,7 @@ 
#define LPO_CLK_SHIFT		8

#define WDOG_CS_CLK		(LPO_CLK << LPO_CLK_SHIFT)

#define WDOG_CS_EN		BIT(7)

#define WDOG_CS_INT_EN		BIT(6)

#define WDOG_CS_UPDATE		BIT(5)

#define WDOG_CS_WAIT		BIT(1)

#define WDOG_CS_STOP		BIT(0)
@@ -62,6 +63,7 @@ struct imx7ulp_wdt_device { 
	void __iomem *base;

	struct clk *clk;

	bool post_rcs_wait;

	bool ext_reset;

	const struct imx_wdt_hw_feature *hw;

};
@@ -285,6 +287,9 @@ static int imx7ulp_wdt_init(struct imx7ulp_wdt_device *wdt, unsigned int timeout 
	if (wdt->hw->prescaler_enable)

		val |= WDOG_CS_PRES;



	if (wdt->ext_reset)

		val |= WDOG_CS_INT_EN;



	do {

		ret = _imx7ulp_wdt_init(wdt, timeout, val);

		toval = readl(wdt->base + WDOG_TOVAL);
@@ -321,6 +326,9 @@ static int imx7ulp_wdt_probe(struct platform_device *pdev) 
		return PTR_ERR(imx7ulp_wdt->clk);

	}



	/* The WDOG may need to do external reset through dedicated pin */

	imx7ulp_wdt->ext_reset = of_property_read_bool(dev->of_node, "fsl,ext-reset-output");



	imx7ulp_wdt->post_rcs_wait = true;

	if (of_device_is_compatible(dev->of_node,

				    "fsl,imx8ulp-wdt")) {