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Set the AT91RM9200 clock to asynchronous mode
Patch by Anders Larsen, 03 May 2005

Wolfgang Denk 19 年之前
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共有 2 个文件被更改,包括 5 次插入2 次删除
  1. 3 0
      CHANGELOG
  2. 2 2
      cpu/arm920t/at91rm9200/lowlevel_init.S

+ 3 - 0
CHANGELOG

@@ -2,6 +2,9 @@
 Changes for U-Boot 1.1.4:
 ======================================================================
 
+* Set the AT91RM9200 clock to asynchronous mode
+  Patch by Anders Larsen, 03 May 2005
+
 * Set the AT91RM9200 clock to synchronous mode
   Patch by Anders Larsen, 29 Apr 2005
 

+ 2 - 2
cpu/arm920t/at91rm9200/lowlevel_init.S

@@ -123,9 +123,9 @@ LoopOsc:
 	cmp	r2, r0
 	bne	2b
 
-	/* switch from FastBus to Synchronous clock mode */
+	/* switch from FastBus to Asynchronous clock mode */
 	mrc	p15, 0, r0, c1, c0, 0
-	orr	r0, r0, #0x40000000	@ set bit 30 (nF) notFastBus
+	orr	r0, r0, #0xC0000000	@ set bit 31 (iA) and 30 (nF)
 	mcr	p15, 0, r0, c1, c0, 0
 
 	/* everything is fine now */