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-rw-r--r--include/configs/sbc8349.h22
1 files changed, 13 insertions, 9 deletions
diff --git a/include/configs/sbc8349.h b/include/configs/sbc8349.h
index 868bd54a6..088b28356 100644
--- a/include/configs/sbc8349.h
+++ b/include/configs/sbc8349.h
@@ -40,24 +40,28 @@
#define CONFIG_MPC8349 1 /* MPC8349 specific */
#define CONFIG_SBC8349 1 /* WRS SBC8349 board specific */
-#undef CONFIG_PCI
/* Don't enable PCI2 on sbc834x - it doesn't exist physically. */
#undef CONFIG_MPC83XX_PCI2 /* support for 2nd PCI controller */
-#define PCI_66M
-#ifdef PCI_66M
-#define CONFIG_83XX_CLKIN 66000000 /* in Hz */
-#else
+/*
+ * The default if PCI isn't enabled, or if no PCI clk setting is given
+ * is 66MHz; this is what the board defaults to when the PCI slot is
+ * physically empty. The board will automatically (i.e w/o jumpers)
+ * clock down to 33MHz if you insert a 33MHz PCI card.
+ */
+#ifdef PCI_33M
#define CONFIG_83XX_CLKIN 33000000 /* in Hz */
+#else /* 66M */
+#define CONFIG_83XX_CLKIN 66000000 /* in Hz */
#endif
#ifndef CONFIG_SYS_CLK_FREQ
-#ifdef PCI_66M
-#define CONFIG_SYS_CLK_FREQ 66000000
-#define HRCWL_CSB_TO_CLKIN HRCWL_CSB_TO_CLKIN_4X1
-#else
+#ifdef PCI_33M
#define CONFIG_SYS_CLK_FREQ 33000000
#define HRCWL_CSB_TO_CLKIN HRCWL_CSB_TO_CLKIN_8X1
+#else /* 66M */
+#define CONFIG_SYS_CLK_FREQ 66000000
+#define HRCWL_CSB_TO_CLKIN HRCWL_CSB_TO_CLKIN_4X1
#endif
#endif