From aab69292e4efd38181cd300d9b83b12592643d6c Mon Sep 17 00:00:00 2001
From: Josh Boyer <jwboyer@linux.vnet.ibm.com>
Date: Mon, 20 Aug 2007 07:29:11 -0500
Subject: [PATCH] [POWERPC] 40x decrementer fixes
Allow generic_calibrate_decr to work for 40x platforms. Given that the hardware
behavior is identical, this also changes the set_dec function to reload the PIT
on 40x to match the behavior 44x currently has.
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
---
arch/powerpc/kernel/time.c | 2 +-
include/asm-powerpc/time.h | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c
index c85d9b0d90420..b5944d8e3802b 100644
--- a/arch/powerpc/kernel/time.c
+++ b/arch/powerpc/kernel/time.c
@@ -866,7 +866,7 @@ void __init generic_calibrate_decr(void)
"(not found)\n");
}
-#ifdef CONFIG_BOOKE
+#if defined(CONFIG_BOOKE) || defined(CONFIG_40x)
/* Set the time base to zero */
mtspr(SPRN_TBWL, 0);
mtspr(SPRN_TBWU, 0);
diff --git a/include/asm-powerpc/time.h b/include/asm-powerpc/time.h
index d7f5ddfbaac77..fdc271ebe41c8 100644
--- a/include/asm-powerpc/time.h
+++ b/include/asm-powerpc/time.h
@@ -174,7 +174,7 @@ static inline unsigned int get_dec(void)
static inline void set_dec(int val)
{
#if defined(CONFIG_40x)
- return; /* Have to let it auto-reload */
+ mtspr(SPRN_PIT, val);
#elif defined(CONFIG_8xx_CPU6)
set_dec_cpu6(val);
#else
--
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