ARM: OMAP: Fix CONFIG_DEBUG_LL

Fix broken CONFIG_DEBUG_LL. In case of low level debugging
reconfigure some clocks early.

See

http://source.mvista.com/git/gitweb.cgi?p=linux-omap-2.6.git;a=commitdiff;h=3bfb289ccc6c4624fd5ff0381546935e105f4093

too.

Signed-off-by: Dirk Behme <dirk.behme_at_gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/arch/arm/mach-omap1/clock.c b/arch/arm/mach-omap1/clock.c
index 8aee42c3f5bf..b67ba34c5636 100644
--- a/arch/arm/mach-omap1/clock.c
+++ b/arch/arm/mach-omap1/clock.c
@@ -649,6 +649,13 @@ int __init omap1_clk_init(void)
         int crystal_type = 0; /* Default 12 MHz */
         u32 reg;
 
+#ifdef CONFIG_DEBUG_LL
+        /* Resets some clocks that may be left on from bootloader,
+         * but leaves serial clocks on.
+         */
+        omap_writel(0x3 << 29, MOD_CONF_CTRL_0);
+#endif
+
         /* USB_REQ_EN will be disabled later if necessary (usb_dc_ck) */
         reg = omap_readw(SOFT_REQ_REG) & (1 << 4);
         omap_writew(reg, SOFT_REQ_REG);