فهرست منبع

Fix udelay bug in vfd.c for trab board
Patch by Martin Krause, 27 Oct 2005

Wolfgang Denk 19 سال پیش
والد
کامیت
3e9a299231
2فایلهای تغییر یافته به همراه8 افزوده شده و 1 حذف شده
  1. 3 0
      CHANGELOG
  2. 5 1
      board/trab/vfd.c

+ 3 - 0
CHANGELOG

@@ -2,6 +2,9 @@
 Changes since U-Boot 1.1.4:
 ======================================================================
 
+* Fix udelay bug in vfd.c for trab board
+  Patch by Martin Krause, 27 Oct 2005
+
 * Disable JFFS2 support for trab board
   Patch by Martin Krause, 27 Oct 2005
 

+ 5 - 1
board/trab/vfd.c

@@ -358,6 +358,8 @@ void transfer_pic(int display, unsigned char *adr, int height, int width)
  */
 int vfd_init_clocks (void)
 {
+	int i;
+
 	S3C24X0_GPIO * const gpio = S3C24X0_GetBase_GPIO();
 	S3C24X0_TIMERS * const timers = S3C24X0_GetBase_TIMERS();
 	S3C24X0_LCD * const lcd = S3C24X0_GetBase_LCD();
@@ -367,7 +369,9 @@ int vfd_init_clocks (void)
 	 */
 	gpio->PCUP = (gpio->PCUP & 0xFFF0);	/* activate  GPC0...GPC3 pullups */
 	gpio->PCCON = (gpio->PCCON & 0xFFFFFF00);	/* configure GPC0...GPC3 as inputs */
-	udelay (10);				/* allow signals to settle */
+	/* allow signals to settle */
+	for (i=0; i<10000; i++)	/* udelay isn't working yet at this point! */
+		__asm("NOP");
 	vfd_board_id = (~gpio->PCDAT) & 0x000F;	/* read GPC0...GPC3 port pins */
 
 	VFD_DISABLE;				/* activate blank for the vfd */