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authorStephen Warren <swarren@nvidia.com>2014-02-03 14:03:27 -0700
committerTom Warren <twarren@nvidia.com>2014-03-05 16:59:08 -0700
commit716ff5ce1df460f75f32009b85e77962c993290c (patch)
treeb18225f2c93acfc9a420a0ad1c11981ee21c9eba /arch/arm/cpu
parent87fb553b90ab191fd643afa64d0fafd266a808c5 (diff)
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ARM: tegra: simplify halt_avp()
In order to completely halt the AVP processor, we should simply write FLOW_MODE_STOP without any extra options that allow wakeup. Amend the code to do this. I believe that enabling FIQ_1 and IRQ_1 allow the CPU to be awoken by interrupts. We don't want this; if later SW wishes to use the AVP, it should be reset and booted from scratch. Related, the bits that were previously IRQ_1 and FIQ_1 have a slightly different definition starting with Tegra114, so the values we're writing don't entirely make sense there anyway. Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Tom Warren <twarren@nvidia.com>
Diffstat (limited to 'arch/arm/cpu')
-rw-r--r--arch/arm/cpu/arm720t/tegra-common/cpu.c5
1 files changed, 2 insertions, 3 deletions
diff --git a/arch/arm/cpu/arm720t/tegra-common/cpu.c b/arch/arm/cpu/arm720t/tegra-common/cpu.c
index 2c5cd63..168f525 100644
--- a/arch/arm/cpu/arm720t/tegra-common/cpu.c
+++ b/arch/arm/cpu/arm720t/tegra-common/cpu.c
@@ -378,8 +378,7 @@ void clock_enable_coresight(int enable)
void halt_avp(void)
{
for (;;) {
- writel((HALT_COP_EVENT_JTAG | HALT_COP_EVENT_IRQ_1 \
- | HALT_COP_EVENT_FIQ_1 | (FLOW_MODE_STOP<<29)),
- FLOW_CTLR_HALT_COP_EVENTS);
+ writel(HALT_COP_EVENT_JTAG | (FLOW_MODE_STOP << 29),
+ FLOW_CTLR_HALT_COP_EVENTS);
}
}