Using the reset command on OMAP36XX/37XX and OMAP4 caused a hang. This
patch uses the reset bit appropriate for each CPU architecture.
Signed-off-by: Steve Sakoman <st...@sakoman.com>
---
arch/arm/cpu/armv7/omap-common/reset.S | 4 +++-
arch/arm/include/asm/arch-omap3/cpu.h | 1 +
arch/arm/include/asm/arch-omap4/omap4.h | 1 +
3 files changed, 5 insertions(+), 1 deletions(-)
diff --git a/arch/arm/cpu/armv7/omap-common/reset.S
b/arch/arm/cpu/armv7/omap-common/reset.S
index a53c408..838b122 100644
--- a/arch/arm/cpu/armv7/omap-common/reset.S
+++ b/arch/arm/cpu/armv7/omap-common/reset.S
@@ -27,10 +27,12 @@
reset_cpu:
ldr r1, rstctl @ get addr for global reset
@ reg
- mov r3, #0x2 @ full reset pll + mpu
+ ldr r3, rstbit @ sw reset bit
str r3, [r1] @ force reset
mov r0, r0
_loop_forever:
b _loop_forever
rstctl:
.word PRM_RSTCTRL
+rstbit:
+ .word PRM_RSTCTRL_RESET
diff --git a/arch/arm/include/asm/arch-omap3/cpu.h
b/arch/arm/include/asm/arch-omap3/cpu.h
index 99da756..962d6d4 100644
--- a/arch/arm/include/asm/arch-omap3/cpu.h
+++ b/arch/arm/include/asm/arch-omap3/cpu.h
@@ -419,6 +419,7 @@ struct prm {
};
#else /* __ASSEMBLY__ */
#define PRM_RSTCTRL 0x48307250
+#define PRM_RSTCTRL_RESET 0x04
#endif /* __ASSEMBLY__ */
#endif /* __KERNEL_STRICT_NAMES */
diff --git a/arch/arm/include/asm/arch-omap4/omap4.h
b/arch/arm/include/asm/arch-omap4/omap4.h
index 79ff22c..d0c808d 100644
--- a/arch/arm/include/asm/arch-omap4/omap4.h
+++ b/arch/arm/include/asm/arch-omap4/omap4.h
@@ -88,6 +88,7 @@
#define PRM_DEVICE_BASE (PRM_BASE + 0x1B00)
#define PRM_RSTCTRL PRM_DEVICE_BASE
+#define PRM_RSTCTRL_RESET 0x01
#ifndef __ASSEMBLY__
--
1.7.0.4
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