From: Chen-Yu Tsai <wens@csie.org>
Date: Sat, 4 Oct 2014 12:37:28 +0000 (+0800)
Subject: ARM: sunxi: Fix reset command on sun6i/sun8i
X-Git-Tag: v2015.01-rc1~127^2~12
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=78c396a1130a118d48068eb5615a912506050832;p=oweals%2Fu-boot.git

ARM: sunxi: Fix reset command on sun6i/sun8i

The watchdog on sun6i/sun8i has a different layout.

Add the new layout and fix up the setup functions so that reset works.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
[ ijc -- removed sun5i workaround from sun6i/sun8i codepath as discussed ]
---

diff --git a/arch/arm/cpu/armv7/sunxi/board.c b/arch/arm/cpu/armv7/sunxi/board.c
index b6d63dbb40..436df8cf2e 100644
--- a/arch/arm/cpu/armv7/sunxi/board.c
+++ b/arch/arm/cpu/armv7/sunxi/board.c
@@ -75,6 +75,7 @@ int gpio_init(void)
 
 void reset_cpu(ulong addr)
 {
+#if defined(CONFIG_SUN4I) || defined(CONFIG_SUN5I) || defined(CONFIG_SUN7I)
 	static const struct sunxi_wdog *wdog =
 		 &((struct sunxi_timer_reg *)SUNXI_TIMER_BASE)->wdog;
 
@@ -86,6 +87,15 @@ void reset_cpu(ulong addr)
 		/* sun5i sometimes gets stuck without this */
 		writel(WDT_MODE_RESET_EN | WDT_MODE_EN, &wdog->mode);
 	}
+#else /* CONFIG_SUN6I || CONFIG_SUN8I || .. */
+	static const struct sunxi_wdog *wdog =
+		 ((struct sunxi_timer_reg *)SUNXI_TIMER_BASE)->wdog;
+
+	/* Set the watchdog for its shortest interval (.5s) and wait */
+	writel(WDT_CFG_RESET, &wdog->cfg);
+	writel(WDT_MODE_EN, &wdog->mode);
+	writel(WDT_CTRL_KEY | WDT_CTRL_RESTART, &wdog->ctl);
+#endif
 }
 
 /* do some early init */
diff --git a/arch/arm/include/asm/arch-sunxi/watchdog.h b/arch/arm/include/asm/arch-sunxi/watchdog.h
index 5b755e37f0..ccc8fa32c4 100644
--- a/arch/arm/include/asm/arch-sunxi/watchdog.h
+++ b/arch/arm/include/asm/arch-sunxi/watchdog.h
@@ -12,6 +12,9 @@
 
 #define WDT_CTRL_RESTART	(0x1 << 0)
 #define WDT_CTRL_KEY		(0x0a57 << 1)
+
+#if defined(CONFIG_SUN4I) || defined(CONFIG_SUN5I) || defined(CONFIG_SUN7I)
+
 #define WDT_MODE_EN		(0x1 << 0)
 #define WDT_MODE_RESET_EN	(0x1 << 1)
 
@@ -21,4 +24,21 @@ struct sunxi_wdog {
 	u32 res[2];
 };
 
+#else
+
+#define WDT_CFG_RESET		(0x1)
+#define WDT_MODE_EN		(0x1)
+
+struct sunxi_wdog {
+	u32 irq_en;		/* 0x00 */
+	u32 irq_sta;		/* 0x04 */
+	u32 res1[2];
+	u32 ctl;		/* 0x10 */
+	u32 cfg;		/* 0x14 */
+	u32 mode;		/* 0x18 */
+	u32 res2;
+};
+
+#endif
+
 #endif /* _SUNXI_WATCHDOG_H_ */