[MIPS] TXx9 watchdog support for rbhma3100,rbhma4200,rbhma4500
This patch adds support for txx9wdt driver to rbhma3100, rbhma4200 and
rbhma4500 platform.
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/jmr3927/rbhma3100/setup.c b/arch/mips/jmr3927/rbhma3100/setup.c
index 75cfe65..c886d80 100644
--- a/arch/mips/jmr3927/rbhma3100/setup.c
+++ b/arch/mips/jmr3927/rbhma3100/setup.c
@@ -35,6 +35,7 @@
#include <linux/delay.h>
#include <linux/pm.h>
#include <linux/platform_device.h>
+#include <linux/clk.h>
#ifdef CONFIG_SERIAL_TXX9
#include <linux/serial_core.h>
#endif
@@ -233,6 +234,8 @@
tx3927_ccfgptr->ccfg &= ~TX3927_CCFG_BEOW;
/* Disable PCI snoop */
tx3927_ccfgptr->ccfg &= ~TX3927_CCFG_PSNP;
+ /* do reset on watchdog */
+ tx3927_ccfgptr->ccfg |= TX3927_CCFG_WR;
#ifdef DO_WRITE_THROUGH
/* Enable PCI SNOOP - with write through only */
@@ -383,3 +386,55 @@
return IS_ERR(dev) ? PTR_ERR(dev) : 0;
}
device_initcall(jmr3927_rtc_init);
+
+/* Watchdog support */
+
+static int __init txx9_wdt_init(unsigned long base)
+{
+ struct resource res = {
+ .start = base,
+ .end = base + 0x100 - 1,
+ .flags = IORESOURCE_MEM,
+ };
+ struct platform_device *dev =
+ platform_device_register_simple("txx9wdt", -1, &res, 1);
+ return IS_ERR(dev) ? PTR_ERR(dev) : 0;
+}
+
+static int __init jmr3927_wdt_init(void)
+{
+ return txx9_wdt_init(TX3927_TMR_REG(2));
+}
+device_initcall(jmr3927_wdt_init);
+
+/* Minimum CLK support */
+
+struct clk *clk_get(struct device *dev, const char *id)
+{
+ if (!strcmp(id, "imbus_clk"))
+ return (struct clk *)JMR3927_IMCLK;
+ return ERR_PTR(-ENOENT);
+}
+EXPORT_SYMBOL(clk_get);
+
+int clk_enable(struct clk *clk)
+{
+ return 0;
+}
+EXPORT_SYMBOL(clk_enable);
+
+void clk_disable(struct clk *clk)
+{
+}
+EXPORT_SYMBOL(clk_disable);
+
+unsigned long clk_get_rate(struct clk *clk)
+{
+ return (unsigned long)clk;
+}
+EXPORT_SYMBOL(clk_get_rate);
+
+void clk_put(struct clk *clk)
+{
+}
+EXPORT_SYMBOL(clk_put);