From: Wolfgang Denk <wd@pollux.denx.de>
Date: Wed, 5 Oct 2005 00:02:25 +0000 (+0200)
Subject: Set the AT91RM9200 clock to synchronous mode
X-Git-Url: http://git.dujemihanovic.xyz/?a=commitdiff_plain;h=3b9dfddfd8fc7d6639e6d746774ca7af77dfd881;p=u-boot.git

Set the AT91RM9200 clock to synchronous mode
Patch by Anders Larsen, 29 Apr 2005
---

diff --git a/CHANGELOG b/CHANGELOG
index 53afe66afb..8c63cdeb4c 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -2,6 +2,9 @@
 Changes for U-Boot 1.1.4:
 ======================================================================
 
+* Set the AT91RM9200 clock to synchronous mode
+  Patch by Anders Larsen, 29 Apr 2005
+
 * Add support for Cogent csb637
   Patch by Anders Larsen, 29 Apr 2005
 
diff --git a/cpu/arm920t/at91rm9200/lowlevel_init.S b/cpu/arm920t/at91rm9200/lowlevel_init.S
index 05887adc0c..6941d42dff 100644
--- a/cpu/arm920t/at91rm9200/lowlevel_init.S
+++ b/cpu/arm920t/at91rm9200/lowlevel_init.S
@@ -123,6 +123,11 @@ LoopOsc:
 	cmp	r2, r0
 	bne	2b
 
+	/* switch from FastBus to Synchronous clock mode */
+	mrc	p15, 0, r0, c1, c0, 0
+	orr	r0, r0, #0x40000000	@ set bit 30 (nF) notFastBus
+	mcr	p15, 0, r0, c1, c0, 0
+
 	/* everything is fine now */
 	mov	pc, lr