We are missing proper hooks for 81xx for reboot to work.
Cc: Brian Hutchinson <b.hutchman@xxxxxxxxx>
Signed-off-by: Tony Lindgren <tony@xxxxxxxxxxx>
---
arch/arm/mach-omap2/Makefile | 1 +
arch/arm/mach-omap2/common.h | 8 ++++++++
arch/arm/mach-omap2/ti81xx-restart.c | 31 +++++++++++++++++++++++++++++++
3 files changed, 40 insertions(+)
create mode 100644 arch/arm/mach-omap2/ti81xx-restart.c
diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile
index 5d27dfd..3a6463f 100644
--- a/arch/arm/mach-omap2/Makefile
+++ b/arch/arm/mach-omap2/Makefile
@@ -58,6 +58,7 @@ AFLAGS_sram34xx.o :=-Wa,-march=armv7-a
# Restart code (OMAP4/5 currently in omap4-common.c)
obj-$(CONFIG_SOC_OMAP2420) += omap2-restart.o
obj-$(CONFIG_SOC_OMAP2430) += omap2-restart.o
+obj-$(CONFIG_SOC_TI81XX) += ti81xx-restart.o
obj-$(CONFIG_SOC_AM33XX) += am33xx-restart.o
obj-$(CONFIG_SOC_AM43XX) += omap4-restart.o
obj-$(CONFIG_ARCH_OMAP3) += omap3-restart.o
diff --git a/arch/arm/mach-omap2/common.h b/arch/arm/mach-omap2/common.h
index 900ebdd..65b4371 100644
--- a/arch/arm/mach-omap2/common.h
+++ b/arch/arm/mach-omap2/common.h
@@ -164,6 +164,14 @@ static inline void omap3xxx_restart(enum reboot_mode mode, const char *cmd)
}
#endif
+#ifdef CONFIG_SOC_TI81XX
+void ti81xx_restart(enum reboot_mode mode, const char *cmd);
+#else
+static inline void ti81xx_restart(enum reboot_mode mode, const char *cmd)
+{
+}
+#endif
+
#if defined(CONFIG_ARCH_OMAP4) || defined(CONFIG_SOC_OMAP5) || \
defined(CONFIG_SOC_DRA7XX) || defined(CONFIG_SOC_AM43XX)
void omap44xx_restart(enum reboot_mode mode, const char *cmd);
diff --git a/arch/arm/mach-omap2/ti81xx-restart.c b/arch/arm/mach-omap2/ti81xx-restart.c
new file mode 100644
index 0000000..68b29be
--- /dev/null
+++ b/arch/arm/mach-omap2/ti81xx-restart.c
@@ -0,0 +1,31 @@
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/reboot.h>
+
+#include "iomap.h"
+#include "common.h"
+#include "control.h"
+#include "prm3xxx.h"
+
+#define TI81XX_PRM_DEVICE_RSTCTRL 0x00a0
+#define TI81XX_GLOBAL_RST_COLD BIT(1)
+
+/**
+ * ti81xx_restart - trigger a software restart of the SoC
+ * @mode: the "reboot mode", see arch/arm/kernel/{setup,process}.c
+ * @cmd: passed from the userspace program rebooting the system (if provided)
+ *
+ * Resets the SoC. For @cmd, see the 'reboot' syscall in
+ * kernel/sys.c. No return value.
+ */
+void ti81xx_restart(enum reboot_mode mode, const char *cmd)
+{
+ omap2_prm_set_mod_reg_bits(TI81XX_GLOBAL_RST_COLD, 0,
+ TI81XX_PRM_DEVICE_RSTCTRL);
+ while (1);
+}
--
2.1.4
--
To unsubscribe from this list: send the line "unsubscribe linux-omap" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
