From: Kevin Hilman <khilman@mvista.com>
Date: Tue, 13 Nov 2007 22:45:42 +0000 (-0800)
Subject: ARM: OMAP: Need to enable 32k-sync clock
X-Git-Tag: v2.6.24-omap1~189
X-Git-Url: http://www.pilppa.org/gitweb/gitweb.cgi?p=linux-2.6-omap-h63xx.git;a=commitdiff_plain;h=d9b7f2dfdccaa370b98abf5d5f850fb0a25571a5

ARM: OMAP: Need to enable 32k-sync clock

When CONFIG_OMAP_RESET_CLOCKS=y is enabled on OMAP3, the 32k sync
clock is disabled, resulting in a crash when any access to it is done,
including a sched_clock().

Signed-off-by: Kevin Hilman <khilman@mvista.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
---

diff --git a/arch/arm/plat-omap/common.c b/arch/arm/plat-omap/common.c
index f0e75c2f313..c5c19a6037d 100644
--- a/arch/arm/plat-omap/common.c
+++ b/arch/arm/plat-omap/common.c
@@ -236,6 +236,12 @@ static int __init omap_init_clocksource_32k(void)
 			"%s: can't register clocksource!\n";
 
 	if (cpu_is_omap16xx() || cpu_class_is_omap2()) {
+		struct clk *sync_32k_ick;
+
+		sync_32k_ick = clk_get(NULL, "omap_32ksync_ick");
+		if (sync_32k_ick)
+			clk_enable(sync_32k_ick);
+
 		clocksource_32k.mult = clocksource_hz2mult(32768,
 					    clocksource_32k.shift);