tune LCD init procedure

diff --git a/board/pandora/video.c b/board/pandora/video.c
index 63ffef4..d86293d 100644 (file)
--- a/board/pandora/video.c
+++ b/board/pandora/video.c
@@ -1,4 +1,5 @@
 #include <common.h>
+#include <asm/io.h>
 #include <lcd.h>
 #include <twl4030.h>
 
@@ -47,6 +48,14 @@ static void lcd_init(void)
        DECLARE_GLOBAL_DATA_PTR;
        u8 d;
 
+       /* make sure LCD nreset is driven low (GPIO157)
+        * (we are called before misc_init_r() which normally handles this stuff) */
+       writel(0x20000000, 0x49056090);
+       writel(readl(0x49056034) & ~0x20000000, 0x49056034);
+       /* also GPIO164 (some audible noise otherwise) */
+       writel(0x10, 0x49058094);
+       writel(readl(0x49058034) & ~0x10, 0x49058034);
+
        /* set VPLL2 to 1.8V */
        twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER, 0x05,
                             TWL4030_PM_RECEIVER_VPLL2_DEDICATED);
@@ -63,7 +72,7 @@ static void lcd_init(void)
        //memset(gd->fb_base, 0, 800*480*2);
        udelay(2000);
 
-       *((volatile uint *) 0x49056094) = 0x20000000; /* Bring LCD out of reset (157) */
+       writel(0x20000000, 0x49056094); /* Bring LCD out of reset (157) */
        udelay(2000); /* Need to wait at least 1ms after reset to start sending signals */
 
        dss_lcd_init((uint)gd->fb_base);