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authorAnders Larsen <al@alarsen.net>2010-03-04 11:22:53 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2010-04-14 11:08:43 +0100
commit317aa408d69a5b833a116317c18c7e957989ce44 (patch)
tree3471e79c93b005a5f4028b89e2cd62cfb960175c /arch/arm
parent2ba3abd8186f24c7fb418927025b4e2120e3a362 (diff)
downloadlinux-317aa408d69a5b833a116317c18c7e957989ce44.tar.gz
ARM: 5975/1: AT91 slow-clock suspend: don't wait when turning PLLs off
From: Julien Langer <julien.langer@gmail.com>

AT91: when turning off the PLLs during suspend, don't wait for the lock
flag to be set. Previously the code would always run into the loop
limitation of 1000 iterations because the flag is never set when turning
the PLLs off.

Comments from Anders Larsen:

 (in http://marc.info/?l=linux-kernel&m=127058929724193&w=2)

Signed-off-by: Julien Langer <julien.langer@gmail.com>
Signed-off-by: Anders Larsen <al@alarsen.net>
Acked-by: Andrew Victor <linux@maxim.org.za>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm')
-rw-r--r--arch/arm/mach-at91/pm_slowclock.S4
1 files changed, 0 insertions, 4 deletions
diff --git a/arch/arm/mach-at91/pm_slowclock.S b/arch/arm/mach-at91/pm_slowclock.S
index 9fcbd6ca0090..9c5b48e68a71 100644
--- a/arch/arm/mach-at91/pm_slowclock.S
+++ b/arch/arm/mach-at91/pm_slowclock.S
@@ -175,8 +175,6 @@ ENTRY(at91_slow_clock)
 	orr	r3, r3, #(1 << 29)		/* bit 29 always set */
 	str	r3, [r1, #(AT91_CKGR_PLLAR - AT91_PMC)]
 
-	wait_pllalock
-
 	/* Save PLLB setting and disable it */
 	ldr	r3, [r1, #(AT91_CKGR_PLLBR - AT91_PMC)]
 	str	r3, .saved_pllbr
@@ -184,8 +182,6 @@ ENTRY(at91_slow_clock)
 	mov	r3, #AT91_PMC_PLLCOUNT
 	str	r3, [r1, #(AT91_CKGR_PLLBR - AT91_PMC)]
 
-	wait_pllblock
-
 	/* Turn off the main oscillator */
 	ldr	r3, [r1, #(AT91_CKGR_MOR - AT91_PMC)]
 	bic	r3, r3, #AT91_PMC_MOSCEN