diff --git a/arch/arm/mach-s3c64xx/Kconfig b/arch/arm/mach-s3c64xx/Kconfig
index e208c2b48853d659c6242e6b252b145d9dad60e5..f3fcb570edf561006278c37fa69ebed31e4abbb8 100644
--- a/arch/arm/mach-s3c64xx/Kconfig
+++ b/arch/arm/mach-s3c64xx/Kconfig
@@ -18,9 +18,10 @@ menuconfig ARCH_S3C64XX
select PM_GENERIC_DOMAINS if PM
select S3C_DEV_NAND if ATAGS
select S3C_GPIO_TRACK if ATAGS
+ select S3C2410_WATCHDOG
select SAMSUNG_ATAGS if ATAGS
select SAMSUNG_WAKEMASK if PM
- select SAMSUNG_WDT_RESET
+ select WATCHDOG
help
Samsung S3C64XX series based systems
diff --git a/arch/arm/mach-s3c64xx/common.c b/arch/arm/mach-s3c64xx/common.c
index a655bf0c780275d119fa1d9cd0a599ef7a4e6eb8..c9c20256488b64992f6a5bed8b66864fa5220396 100644
--- a/arch/arm/mach-s3c64xx/common.c
+++ b/arch/arm/mach-s3c64xx/common.c
@@ -50,7 +50,6 @@
#include "common.h"
#include "irq-uart.h"
-#include "watchdog-reset.h"
/* External clock frequency */
static unsigned long xtal_f __ro_after_init = 12000000;
@@ -229,13 +228,7 @@ core_initcall(s3c64xx_dev_init);
void __init s3c64xx_init_irq(u32 vic0_valid, u32 vic1_valid)
{
- /*
- * FIXME: there is no better place to put this at the moment
- * (s3c64xx_clk_init needs ioremap and must happen before init_time
- * samsung_wdt_reset_init needs clocks)
- */
s3c64xx_clk_init(NULL, xtal_f, xusbxti_f, soc_is_s3c6400(), S3C_VA_SYS);
- samsung_wdt_reset_init(S3C_VA_WATCHDOG);
printk(KERN_DEBUG "%s: initialising interrupts\n", __func__);
@@ -429,12 +422,3 @@ static int __init s3c64xx_init_irq_eint(void)
return 0;
}
arch_initcall(s3c64xx_init_irq_eint);
-
-void s3c64xx_restart(enum reboot_mode mode, const char *cmd)
-{
- if (mode != REBOOT_SOFT)
- samsung_wdt_reset();
-
- /* if all else fails, or mode was for soft, jump to 0 */
- soft_restart(0);
-}
diff --git a/arch/arm/mach-s3c64xx/common.h b/arch/arm/mach-s3c64xx/common.h
index 6fcfb0e0ffa57362d43f4ad63f537fc0570efa2b..567bf30171711ecdd2ce5c3f1af76683c04a9c0f 100644
--- a/arch/arm/mach-s3c64xx/common.h
+++ b/arch/arm/mach-s3c64xx/common.h
@@ -19,8 +19,6 @@
void s3c64xx_init_irq(u32 vic0, u32 vic1);
void s3c64xx_init_io(struct map_desc *mach_desc, int size);
-void s3c64xx_restart(enum reboot_mode mode, const char *cmd);
-
struct device_node;
void s3c64xx_set_xtal_freq(unsigned long freq);
void s3c64xx_set_xusbxti_freq(unsigned long freq);
diff --git a/arch/arm/mach-s3c64xx/mach-anw6410.c b/arch/arm/mach-s3c64xx/mach-anw6410.c
index 495549573d368dc4e973e0572cbe1c490a8d3ea6..e783f5b3593aa7d4c659da04191ab2f7aa1e1f4a 100644
--- a/arch/arm/mach-s3c64xx/mach-anw6410.c
+++ b/arch/arm/mach-s3c64xx/mach-anw6410.c
@@ -228,5 +228,4 @@ MACHINE_START(ANW6410, "A&W6410")
.map_io = anw6410_map_io,
.init_machine = anw6410_machine_init,
.init_time = samsung_timer_init,
- .restart = s3c64xx_restart,
MACHINE_END
diff --git a/arch/arm/mach-s3c64xx/mach-crag6410.c b/arch/arm/mach-s3c64xx/mach-crag6410.c
index 3cb43a33e3f8b08ec93977445ef1046becd8692d..223a3d51d8b68b2a73e126cfa41628083fd0f75c 100644
--- a/arch/arm/mach-s3c64xx/mach-crag6410.c
+++ b/arch/arm/mach-s3c64xx/mach-crag6410.c
@@ -877,5 +877,4 @@ MACHINE_START(WLF_CRAGG_6410, "Wolfson Cragganmore 6410")
.map_io = crag6410_map_io,
.init_machine = crag6410_machine_init,
.init_time = samsung_timer_init,
- .restart = s3c64xx_restart,
MACHINE_END
diff --git a/arch/arm/mach-s3c64xx/mach-hmt.c b/arch/arm/mach-s3c64xx/mach-hmt.c
index cadb6310351770b6e5ff6cfccc7a8b41590872b7..ad15260c12b49e6f51fd0e64a55dde39a332e547 100644
--- a/arch/arm/mach-s3c64xx/mach-hmt.c
+++ b/arch/arm/mach-s3c64xx/mach-hmt.c
@@ -280,5 +280,4 @@ MACHINE_START(HMT, "Airgoo-HMT")
.map_io = hmt_map_io,
.init_machine = hmt_machine_init,
.init_time = samsung_timer_init,
- .restart = s3c64xx_restart,
MACHINE_END
diff --git a/arch/arm/mach-s3c64xx/mach-mini6410.c b/arch/arm/mach-s3c64xx/mach-mini6410.c
index 77bad289102021a0fe4faac4bf0a0ef4f0a3c9bc..636d312add81604492a6f14392512ad98ad62499 100644
--- a/arch/arm/mach-s3c64xx/mach-mini6410.c
+++ b/arch/arm/mach-s3c64xx/mach-mini6410.c
@@ -362,5 +362,4 @@ MACHINE_START(MINI6410, "MINI6410")
.map_io = mini6410_map_io,
.init_machine = mini6410_machine_init,
.init_time = samsung_timer_init,
- .restart = s3c64xx_restart,
MACHINE_END
diff --git a/arch/arm/mach-s3c64xx/mach-ncp.c b/arch/arm/mach-s3c64xx/mach-ncp.c
index a7c328d32824c31a5db57a35d6672495a50f03f8..0a67ff1735758acb78a0b0777514a33838625176 100644
--- a/arch/arm/mach-s3c64xx/mach-ncp.c
+++ b/arch/arm/mach-s3c64xx/mach-ncp.c
@@ -98,5 +98,4 @@ MACHINE_START(NCP, "NCP")
.map_io = ncp_map_io,
.init_machine = ncp_machine_init,
.init_time = samsung_timer_init,
- .restart = s3c64xx_restart,
MACHINE_END
diff --git a/arch/arm/mach-s3c64xx/mach-real6410.c b/arch/arm/mach-s3c64xx/mach-real6410.c
index 993ce7bdd7400e24b29498b7f841aa968a18dd67..56fc21f02c7bd81ea995e9f6bbecd24184838a5c 100644
--- a/arch/arm/mach-s3c64xx/mach-real6410.c
+++ b/arch/arm/mach-s3c64xx/mach-real6410.c
@@ -330,5 +330,4 @@ MACHINE_START(REAL6410, "REAL6410")
.map_io = real6410_map_io,
.init_machine = real6410_machine_init,
.init_time = samsung_timer_init,
- .restart = s3c64xx_restart,
MACHINE_END
diff --git a/arch/arm/mach-s3c64xx/mach-s3c64xx-dt.c b/arch/arm/mach-s3c64xx/mach-s3c64xx-dt.c
index 1724f5ea5c462f3def8d22d81aa497bf3ce51ecd..09c4e8742629ac97cc15b9b9e5ccef7b99a3ecb7 100644
--- a/arch/arm/mach-s3c64xx/mach-s3c64xx-dt.c
+++ b/arch/arm/mach-s3c64xx/mach-s3c64xx-dt.c
@@ -12,7 +12,6 @@
#include <mach/map.h>
#include "common.h"
-#include "watchdog-reset.h"
/*
* IO mapping for shared system controller IP.
@@ -39,20 +38,6 @@ static void __init s3c64xx_dt_map_io(void)
panic("SoC is not S3C64xx!");
}
-static void __init s3c64xx_dt_init_machine(void)
-{
- samsung_wdt_reset_of_init();
-}
-
-static void s3c64xx_dt_restart(enum reboot_mode mode, const char *cmd)
-{
- if (mode != REBOOT_SOFT)
- samsung_wdt_reset();
-
- /* if all else fails, or mode was for soft, jump to 0 */
- soft_restart(0);
-}
-
static const char *const s3c64xx_dt_compat[] __initconst = {
"samsung,s3c6400",
"samsung,s3c6410",
@@ -63,6 +48,4 @@ DT_MACHINE_START(S3C6400_DT, "Samsung S3C64xx (Flattened Device Tree)")
/* Maintainer: Tomasz Figa <tomasz.figa@gmail.com> */
.dt_compat = s3c64xx_dt_compat,
.map_io = s3c64xx_dt_map_io,
- .init_machine = s3c64xx_dt_init_machine,
- .restart = s3c64xx_dt_restart,
MACHINE_END
diff --git a/arch/arm/mach-s3c64xx/mach-smartq5.c b/arch/arm/mach-s3c64xx/mach-smartq5.c
index c1d173a97f2ac3ded6b99ea269c744e6fc2e2f3c..789876a20534ed237d1d60d69a85d3c953573330 100644
--- a/arch/arm/mach-s3c64xx/mach-smartq5.c
+++ b/arch/arm/mach-s3c64xx/mach-smartq5.c
@@ -151,5 +151,4 @@ MACHINE_START(SMARTQ5, "SmartQ 5")
.map_io = smartq_map_io,
.init_machine = smartq5_machine_init,
.init_time = samsung_timer_init,
- .restart = s3c64xx_restart,
MACHINE_END
diff --git a/arch/arm/mach-s3c64xx/mach-smartq7.c b/arch/arm/mach-s3c64xx/mach-smartq7.c
index 493fd8cd83eb7e3d6eb04c351d896f53edbed029..d004e34b63bb3651dea6930ec501693b84f2de22 100644
--- a/arch/arm/mach-s3c64xx/mach-smartq7.c
+++ b/arch/arm/mach-s3c64xx/mach-smartq7.c
@@ -167,5 +167,4 @@ MACHINE_START(SMARTQ7, "SmartQ 7")
.map_io = smartq_map_io,
.init_machine = smartq7_machine_init,
.init_time = samsung_timer_init,
- .restart = s3c64xx_restart,
MACHINE_END
diff --git a/arch/arm/mach-s3c64xx/mach-smdk6400.c b/arch/arm/mach-s3c64xx/mach-smdk6400.c
index 76b676b6acbbfef7d063ab67e7b58f017015e067..d24899dd388305b88d2c5b768c7fd6639b3dbf78 100644
--- a/arch/arm/mach-s3c64xx/mach-smdk6400.c
+++ b/arch/arm/mach-s3c64xx/mach-smdk6400.c
@@ -88,5 +88,4 @@ MACHINE_START(SMDK6400, "SMDK6400")
.map_io = smdk6400_map_io,
.init_machine = smdk6400_machine_init,
.init_time = samsung_timer_init,
- .restart = s3c64xx_restart,
MACHINE_END
diff --git a/arch/arm/mach-s3c64xx/mach-smdk6410.c b/arch/arm/mach-s3c64xx/mach-smdk6410.c
index 3bd13701d01c259818289ba410ea03c7bcf174b6..104548fb192aa0b59b097953e2603c54b2699b45 100644
--- a/arch/arm/mach-s3c64xx/mach-smdk6410.c
+++ b/arch/arm/mach-s3c64xx/mach-smdk6410.c
@@ -704,5 +704,4 @@ MACHINE_START(SMDK6410, "SMDK6410")
.map_io = smdk6410_map_io,
.init_machine = smdk6410_machine_init,
.init_time = samsung_timer_init,
- .restart = s3c64xx_restart,
MACHINE_END
diff --git a/arch/arm/mach-s3c64xx/watchdog-reset.h b/arch/arm/mach-s3c64xx/watchdog-reset.h
deleted file mode 100644
index 1042d6c463dc3944e46595709346267b804c0f80..0000000000000000000000000000000000000000
--- a/arch/arm/mach-s3c64xx/watchdog-reset.h
+++ /dev/null
@@ -1,16 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- * Copyright (c) 2008 Simtec Electronics
- * Ben Dooks <ben@simtec.co.uk>
- *
- * S3C2410 - System define for arch_reset() function
- */
-
-#ifndef __PLAT_SAMSUNG_WATCHDOG_RESET_H
-#define __PLAT_SAMSUNG_WATCHDOG_RESET_H
-
-extern void samsung_wdt_reset(void);
-extern void samsung_wdt_reset_of_init(void);
-extern void samsung_wdt_reset_init(void __iomem *base);
-
-#endif /* __PLAT_SAMSUNG_WATCHDOG_RESET_H */
diff --git a/arch/arm/plat-samsung/Kconfig b/arch/arm/plat-samsung/Kconfig
index 43a8b2bd16ff9d36f4df3f3d3cba40981aa9d573..3aca01067b3c1857c92b7906123de866a08e348f 100644
--- a/arch/arm/plat-samsung/Kconfig
+++ b/arch/arm/plat-samsung/Kconfig
@@ -290,12 +290,6 @@ config SAMSUNG_WAKEMASK
and above. This code allows a set of interrupt to wakeup-mask
mappings. See <plat/wakeup-mask.h>
-config SAMSUNG_WDT_RESET
- bool
- help
- Compile support for system restart by triggering watchdog reset.
- Used on SoCs that do not provide dedicated reset control.
-
config DEBUG_S3C_UART
depends on PLAT_SAMSUNG
int
diff --git a/arch/arm/plat-samsung/Makefile b/arch/arm/plat-samsung/Makefile
index 3db9d2c3825890037ab8e10fe85c173a28b5e28d..ce339a96fbf78d73e653da3b114d8a4e6e02e40e 100644
--- a/arch/arm/plat-samsung/Makefile
+++ b/arch/arm/plat-samsung/Makefile
@@ -32,4 +32,3 @@ obj-$(CONFIG_SAMSUNG_PM_CHECK) += pm-check.o
obj-$(CONFIG_SAMSUNG_PM_DEBUG) += pm-debug.o
obj-$(CONFIG_SAMSUNG_WAKEMASK) += wakeup-mask.o
-obj-$(CONFIG_SAMSUNG_WDT_RESET) += watchdog-reset.o
diff --git a/arch/arm/plat-samsung/watchdog-reset.c b/arch/arm/plat-samsung/watchdog-reset.c
deleted file mode 100644
index 71d85ff323f73d0e13d98ad5803287c1aba38e18..0000000000000000000000000000000000000000
--- a/arch/arm/plat-samsung/watchdog-reset.c
+++ /dev/null
@@ -1,93 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-//
-// Copyright (c) 2008 Simtec Electronics
-// Ben Dooks <ben@simtec.co.uk>
-//
-// Copyright (c) 2013 Tomasz Figa <tomasz.figa@gmail.com>
-//
-// Watchdog reset support for Samsung SoCs.
-
-#include <linux/clk.h>
-#include <linux/err.h>
-#include <linux/io.h>
-#include <linux/delay.h>
-#include <linux/of.h>
-#include <linux/of_address.h>
-
-#define S3C2410_WTCON 0x00
-#define S3C2410_WTDAT 0x04
-#define S3C2410_WTCNT 0x08
-
-#define S3C2410_WTCON_ENABLE (1 << 5)
-#define S3C2410_WTCON_DIV16 (0 << 3)
-#define S3C2410_WTCON_RSTEN (1 << 0)
-#define S3C2410_WTCON_PRESCALE(x) ((x) << 8)
-
-static void __iomem *wdt_base;
-static struct clk *wdt_clock;
-
-void samsung_wdt_reset(void)
-{
- if (!wdt_base) {
- pr_err("%s: wdt reset not initialized\n", __func__);
- /* delay to allow the serial port to show the message */
- mdelay(50);
- return;
- }
-
- if (!IS_ERR(wdt_clock))
- clk_prepare_enable(wdt_clock);
-
- /* disable watchdog, to be safe */
- __raw_writel(0, wdt_base + S3C2410_WTCON);
-
- /* put initial values into count and data */
- __raw_writel(0x80, wdt_base + S3C2410_WTCNT);
- __raw_writel(0x80, wdt_base + S3C2410_WTDAT);
-
- /* set the watchdog to go and reset... */
- __raw_writel(S3C2410_WTCON_ENABLE | S3C2410_WTCON_DIV16 |
- S3C2410_WTCON_RSTEN | S3C2410_WTCON_PRESCALE(0x20),
- wdt_base + S3C2410_WTCON);
-
- /* wait for reset to assert... */
- mdelay(500);
-
- pr_err("Watchdog reset failed to assert reset\n");
-
- /* delay to allow the serial port to show the message */
- mdelay(50);
-}
-
-#ifdef CONFIG_OF
-static const struct of_device_id s3c2410_wdt_match[] = {
- { .compatible = "samsung,s3c2410-wdt" },
- { .compatible = "samsung,s3c6410-wdt" },
- {},
-};
-
-void __init samsung_wdt_reset_of_init(void)
-{
- struct device_node *np;
-
- np = of_find_matching_node(NULL, s3c2410_wdt_match);
- if (!np) {
- pr_err("%s: failed to find watchdog node\n", __func__);
- return;
- }
-
- wdt_base = of_iomap(np, 0);
- if (!wdt_base) {
- pr_err("%s: failed to map watchdog registers\n", __func__);
- return;
- }
-
- wdt_clock = of_clk_get(np, 0);
-}
-#endif
-
-void __init samsung_wdt_reset_init(void __iomem *base)
-{
- wdt_base = base;
- wdt_clock = clk_get(NULL, "watchdog");
-}