nios2: Set CONFIG_SYS_HZ to 1000 all nios2 boards.

   CONFIG_SYS_HZ was being calculated (incorrectly) in nios2 configuration
   headers. Updated comments to accurately describe timebase macros.

Signed-off-by: Scott McNutt <smcnutt@psyent.com>

5 files changed, 40 insertions, 30 deletions

diff --git a/include/configs/EP1C20.h b/include/configs/EP1C20.h
index dc82e54e8ac..3920d35264a 100644
--- a/include/configs/EP1C20.h
+++ b/include/configs/EP1C20.h
@@ -124,14 +124,16 @@
  * TIMEBASE --
  *
  * The high res timer defaults to 1 msec. Since it includes the period
- * registers, we can slow it down to 10 msec using TMRCNT. If the default
- * period is acceptable, TMRCNT can be left undefined.
+ * registers, the interrupt frequency can be reduced using TMRCNT.
+ * If the default period is acceptable, TMRCNT can be left undefined.
+ * TMRMS represents the desired mecs per tick (msecs per interrupt).
  *----------------------------------------------------------------------*/
+#define CONFIG_SYS_HZ			1000	/* Always 1000 */
 #define CONFIG_SYS_NIOS_TMRBASE	0x02120820	/* Tick timer base addr */
-#define CONFIG_SYS_NIOS_TMRIRQ		3		/* Timer IRQ num	*/
-#define CONFIG_SYS_NIOS_TMRMS		10		/* 10 msec per tick	*/
-#define CONFIG_SYS_NIOS_TMRCNT (CONFIG_SYS_NIOS_TMRMS * (CONFIG_SYS_CLK_FREQ/1000))
-#define CONFIG_SYS_HZ		(CONFIG_SYS_CLK_FREQ/(CONFIG_SYS_NIOS_TMRCNT + 1))
+#define CONFIG_SYS_NIOS_TMRIRQ		3	/* Timer IRQ num	*/
+#define CONFIG_SYS_NIOS_TMRMS		10	/* Desired period (msec)*/
+#define CONFIG_SYS_NIOS_TMRCNT \
+		(CONFIG_SYS_NIOS_TMRMS * (CONFIG_SYS_CLK_FREQ/1000))
 
 /*------------------------------------------------------------------------
  * STATUS LED -- Provides a simple blinking led. For Nios2 each board
diff --git a/include/configs/EP1S10.h b/include/configs/EP1S10.h
index 498f26df1fc..bfbf8c11197 100644
--- a/include/configs/EP1S10.h
+++ b/include/configs/EP1S10.h
@@ -119,14 +119,16 @@
  * TIMEBASE --
  *
  * The high res timer defaults to 1 msec. Since it includes the period
- * registers, we can slow it down to 10 msec using TMRCNT. If the default
- * period is acceptable, TMRCNT can be left undefined.
+ * registers, the interrupt frequency can be reduced using TMRCNT.
+ * If the default period is acceptable, TMRCNT can be left undefined.
+ * TMRMS represents the desired mecs per tick (msecs per interrupt).
  *----------------------------------------------------------------------*/
+#define CONFIG_SYS_HZ			1000	/* Always 1000 */
 #define CONFIG_SYS_NIOS_TMRBASE	0x02120820	/* Tick timer base addr */
-#define CONFIG_SYS_NIOS_TMRIRQ		3		/* Timer IRQ num	*/
-#define CONFIG_SYS_NIOS_TMRMS		10		/* 10 msec per tick	*/
-#define CONFIG_SYS_NIOS_TMRCNT (CONFIG_SYS_NIOS_TMRMS * (CONFIG_SYS_CLK_FREQ/1000))
-#define CONFIG_SYS_HZ		(CONFIG_SYS_CLK_FREQ/(CONFIG_SYS_NIOS_TMRCNT + 1))
+#define CONFIG_SYS_NIOS_TMRIRQ		3	/* Timer IRQ num */
+#define CONFIG_SYS_NIOS_TMRMS		10	/* Desired period (msec)*/
+#define CONFIG_SYS_NIOS_TMRCNT \
+		(CONFIG_SYS_NIOS_TMRMS * (CONFIG_SYS_CLK_FREQ/1000))
 
 /*------------------------------------------------------------------------
  * STATUS LED -- Provides a simple blinking led. For Nios2 each board
diff --git a/include/configs/EP1S40.h b/include/configs/EP1S40.h
index 4ad65d84acc..4d905fee385 100644
--- a/include/configs/EP1S40.h
+++ b/include/configs/EP1S40.h
@@ -119,14 +119,16 @@
  * TIMEBASE --
  *
  * The high res timer defaults to 1 msec. Since it includes the period
- * registers, we can slow it down to 10 msec using TMRCNT. If the default
- * period is acceptable, TMRCNT can be left undefined.
+ * registers, the interrupt frequency can be reduced using TMRCNT.
+ * If the default period is acceptable, TMRCNT can be left undefined.
+ * TMRMS represents the desired mecs per tick (msecs per interrupt).
  *----------------------------------------------------------------------*/
+#define CONFIG_SYS_HZ			1000	/* Always 1000 */
 #define CONFIG_SYS_NIOS_TMRBASE	0x02120820	/* Tick timer base addr */
-#define CONFIG_SYS_NIOS_TMRIRQ		3		/* Timer IRQ num	*/
-#define CONFIG_SYS_NIOS_TMRMS		10		/* 10 msec per tick	*/
-#define CONFIG_SYS_NIOS_TMRCNT (CONFIG_SYS_NIOS_TMRMS * (CONFIG_SYS_CLK_FREQ/1000))
-#define CONFIG_SYS_HZ		(CONFIG_SYS_CLK_FREQ/(CONFIG_SYS_NIOS_TMRCNT + 1))
+#define CONFIG_SYS_NIOS_TMRIRQ		3	/* Timer IRQ num */
+#define CONFIG_SYS_NIOS_TMRMS		10	/* Desired period (msec) */
+#define CONFIG_SYS_NIOS_TMRCNT \
+		(CONFIG_SYS_NIOS_TMRMS * (CONFIG_SYS_CLK_FREQ/1000))
 
 /*------------------------------------------------------------------------
  * STATUS LED -- Provides a simple blinking led. For Nios2 each board
diff --git a/include/configs/PCI5441.h b/include/configs/PCI5441.h
index d06b7f82749..c60a9f7bc72 100644
--- a/include/configs/PCI5441.h
+++ b/include/configs/PCI5441.h
@@ -114,14 +114,16 @@
  * TIMEBASE --
  *
  * The high res timer defaults to 1 msec. Since it includes the period
- * registers, we can slow it down to 10 msec using TMRCNT. If the default
- * period is acceptable, TMRCNT can be left undefined.
+ * registers, the interrupt frequency can be reduced using TMRCNT.
+ * If the default period is acceptable, TMRCNT can be left undefined.
+ * TMRMS represents the desired mecs per tick (msecs per interrupt).
  *----------------------------------------------------------------------*/
+#define CONFIG_SYS_HZ			1000	/* Always 1000 */
 #define CONFIG_SYS_NIOS_TMRBASE	0x00920860	/* Tick timer base addr	*/
-#define CONFIG_SYS_NIOS_TMRIRQ		3		/* Timer IRQ num	*/
-#define CONFIG_SYS_NIOS_TMRMS		10		/* 10 msec per tick	*/
-#define CONFIG_SYS_NIOS_TMRCNT	(CONFIG_SYS_NIOS_TMRMS * (CONFIG_SYS_CLK_FREQ/1000))
-#define	CONFIG_SYS_HZ		(CONFIG_SYS_CLK_FREQ/(CONFIG_SYS_NIOS_TMRCNT + 1))
+#define CONFIG_SYS_NIOS_TMRIRQ		3	/* Timer IRQ num */
+#define CONFIG_SYS_NIOS_TMRMS		10	/* Desired period (msec)*/
+#define CONFIG_SYS_NIOS_TMRCNT \
+		(CONFIG_SYS_NIOS_TMRMS * (CONFIG_SYS_CLK_FREQ/1000))
 
 
 /*
diff --git a/include/configs/PK1C20.h b/include/configs/PK1C20.h
index 165dde043e6..874c20b935c 100644
--- a/include/configs/PK1C20.h
+++ b/include/configs/PK1C20.h
@@ -124,14 +124,16 @@
  * TIMEBASE --
  *
  * The high res timer defaults to 1 msec. Since it includes the period
- * registers, we can slow it down to 10 msec using TMRCNT. If the default
- * period is acceptable, TMRCNT can be left undefined.
+ * registers, the interrupt frequency can be reduced using TMRCNT.
+ * If the default period is acceptable, TMRCNT can be left undefined.
+ * TMRMS represents the desired mecs per tick (msecs per interrupt).
  *----------------------------------------------------------------------*/
+#define CONFIG_SYS_HZ			1000	/* Always 1000 */
 #define CONFIG_SYS_NIOS_TMRBASE	0x02120820	/* Tick timer base addr */
-#define CONFIG_SYS_NIOS_TMRIRQ		3		/* Timer IRQ num	*/
-#define CONFIG_SYS_NIOS_TMRMS		10		/* 10 msec per tick	*/
-#define CONFIG_SYS_NIOS_TMRCNT (CONFIG_SYS_NIOS_TMRMS * (CONFIG_SYS_CLK_FREQ/1000))
-#define CONFIG_SYS_HZ		(CONFIG_SYS_CLK_FREQ/(CONFIG_SYS_NIOS_TMRCNT + 1))
+#define CONFIG_SYS_NIOS_TMRIRQ		3	/* Timer IRQ num */
+#define CONFIG_SYS_NIOS_TMRMS		10	/* Desired period */
+#define CONFIG_SYS_NIOS_TMRCNT \
+		(CONFIG_SYS_NIOS_TMRMS * (CONFIG_SYS_CLK_FREQ/1000))
 
 /*------------------------------------------------------------------------
  * STATUS LED -- Provides a simple blinking led. For Nios2 each board