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authorKelvin Cheung <keguang.zhang@gmail.com>2014-10-10 11:39:59 +0800
committerRalf Baechle <ralf@linux-mips.org>2014-11-24 07:45:09 +0100
commita13f0795752389f84bc31b9171cb79ad6759e4db (patch)
tree3bfb346e0e22c9b4b64d4504342d496282266ef1 /arch/mips/loongson1
parent0dc294c05d9df09ca4a65071e370247eaab8638d (diff)
MIPS: Loongson1B: Fix reboot problem on LS1B
- Correct the header file of watchdog registers - Use ioremap_nocache() to access watchdog registers instead Signed-off-by: Kelvin Cheung <keguang.zhang@gmail.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/8022/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/loongson1')
-rw-r--r--arch/mips/loongson1/common/reset.c20
1 files changed, 14 insertions, 6 deletions
diff --git a/arch/mips/loongson1/common/reset.c b/arch/mips/loongson1/common/reset.c
index 547f34b69e4c..c41e4ca56ab4 100644
--- a/arch/mips/loongson1/common/reset.c
+++ b/arch/mips/loongson1/common/reset.c
@@ -14,12 +14,7 @@
#include <loongson1.h>
-static void ls1x_restart(char *command)
-{
- __raw_writel(0x1, LS1X_WDT_EN);
- __raw_writel(0x5000000, LS1X_WDT_TIMER);
- __raw_writel(0x1, LS1X_WDT_SET);
-}
+static void __iomem *wdt_base;
static void ls1x_halt(void)
{
@@ -29,6 +24,15 @@ static void ls1x_halt(void)
}
}
+static void ls1x_restart(char *command)
+{
+ __raw_writel(0x1, wdt_base + WDT_EN);
+ __raw_writel(0x1, wdt_base + WDT_TIMER);
+ __raw_writel(0x1, wdt_base + WDT_SET);
+
+ ls1x_halt();
+}
+
static void ls1x_power_off(void)
{
ls1x_halt();
@@ -36,6 +40,10 @@ static void ls1x_power_off(void)
static int __init ls1x_reboot_setup(void)
{
+ wdt_base = ioremap_nocache(LS1X_WDT_BASE, 0x0f);
+ if (!wdt_base)
+ panic("Failed to remap watchdog registers");
+
_machine_restart = ls1x_restart;
_machine_halt = ls1x_halt;
pm_power_off = ls1x_power_off;