arm: at91: Remove CONFIG_AT91_HW_WDT_TIMEOUT

This patch removes the CONFIG_AT91_HW_WDT_TIMEOUT as its not needed any
more. The WD timeout value can be provided via the "timeout-sec" DT
property. If not provided this way, the default value of 2 seconds will
be used.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Heiko Schocher <hs@denx.de>
Cc: Andreas Bießmann <andreas@biessmann.org>
Cc: Eugen Hristev <eugen.hristev@microchip.com>

README

@@ -767,9 +767,6 @@ The following options need to be configured:
 		SoC, then define this variable and provide board
 		specific code for the "hw_watchdog_reset" function.
 
-		CONFIG_AT91_HW_WDT_TIMEOUT
-		specify the timeout in seconds. default 2 seconds.
-
 - Real-Time Clock:
 
 		When CONFIG_CMD_DATE is selected, the type of the RTC

configs/smartweb_defconfig

@@ -59,6 +59,5 @@ CONFIG_USB_ETHER_ASIX=y
 CONFIG_USB_ETHER_MCS7830=y
 CONFIG_WDT=y
 CONFIG_WDT_AT91=y
-CONFIG_AT91_HW_WDT_TIMEOUT=y
 CONFIG_SPL_TINY_MEMSET=y
 # CONFIG_EFI_LOADER is not set

configs/taurus_defconfig

@@ -62,5 +62,4 @@ CONFIG_USB_GADGET_PRODUCT_NUM=0x02d2
 CONFIG_USB_GADGET_DOWNLOAD=y
 CONFIG_WDT=y
 CONFIG_WDT_AT91=y
-CONFIG_AT91_HW_WDT_TIMEOUT=y
 CONFIG_USE_TINY_PRINTF=y

drivers/watchdog/Kconfig

@@ -139,10 +139,6 @@ config WDT_AT91
 	   Select this to enable Microchip watchdog timer, which can be found on
 	   some AT91 devices.
 
-config AT91_HW_WDT_TIMEOUT
-	bool "AT91 watchdog timeout specified"
-	depends on WDT_AT91
-
 config WDT_MT7621
 	bool "MediaTek MT7621 watchdog timer support"
 	depends on WDT && ARCH_MT7620

drivers/watchdog/at91sam9_wdt.c

@@ -117,10 +117,12 @@ static int at91_wdt_probe(struct udevice *dev)
 	if (!priv->regs)
 		return -EINVAL;
 
-#ifdef CONFIG_AT91_HW_WDT_TIMEOUT
+#if CONFIG_IS_ENABLED(OF_CONTROL)
 	priv->timeout = dev_read_u32_default(dev, "timeout-sec",
 					     WDT_DEFAULT_TIMEOUT);
 	debug("%s: timeout %d", __func__, priv->timeout);
+#else
+	priv->timeout = WDT_DEFAULT_TIMEOUT;
 #endif
 
 	debug("%s: Probing wdt%u\n", __func__, dev->seq);