ppc4xx: lwmon5: Update Lime initialization
Change Lime SDRAM initialization to now support 100MHz and
133MHz (if enabled). Also the framebuffer is initialized to
display a blue rectangle with a white border.
Signed-off-by: Anatolij Gustschin <agust@denx.de>
Signed-off-by: Stefan Roese <sr@denx.de>
diff --git a/include/configs/lwmon5.h b/include/configs/lwmon5.h
index 55e2c94..b09b478 100644
--- a/include/configs/lwmon5.h
+++ b/include/configs/lwmon5.h
@@ -341,14 +341,24 @@
* Graphics (Fujitsu Lime)
*----------------------------------------------------------------------*/
/* SDRAM Clock frequency adjustment register */
-#define CFG_LIME_SDRAM_CLOCK 0xC1FC0000
-/* Lime Clock frequency is to set 133MHz */
+#define CFG_LIME_SDRAM_CLOCK 0xC1FC0038
+/* Lime Clock frequency is to set 100MHz */
+#define CFG_LIME_CLOCK_100MHZ 0x00000
+#if 0
+/* Lime Clock frequency for 133MHz */
#define CFG_LIME_CLOCK_133MHZ 0x10000
+#endif
/* SDRAM Parameter register */
#define CFG_LIME_MMR 0xC1FCFFFC
-/* SDRAM parameter value */
+/* SDRAM parameter value; was 0x414FB7F2, caused several vertical bars
+ and pixel flare on display when 133MHz was configured. According to
+ SDRAM chip datasheet CAS Latency is 3 for 133MHz and -75 Speed Grade */
+#ifdef CFG_LIME_CLOCK_133MHZ
+#define CFG_LIME_MMR_VALUE 0x414FB7F3
+#else
#define CFG_LIME_MMR_VALUE 0x414FB7F2
+#endif
/*-----------------------------------------------------------------------
* GPIO Setup