OMAP3: Fix timer handling to 1ms and CONFIG_SYS_HZ to 1000

Signed-off-by: Dirk Behme <dirk.behme@googlemail.com>
Signed-off-by: Manikandan Pillai <mani.pillai@ti.com>

5 files changed, 28 insertions, 24 deletions

diff --git a/include/configs/omap3_beagle.h b/include/configs/omap3_beagle.h
index d8c328f..a3d9cf6 100644
--- a/include/configs/omap3_beagle.h
+++ b/include/configs/omap3_beagle.h
@@ -217,12 +217,13 @@
 							/* load address */
 
 /*
- * 2430 has 12 GP timers, they can be driven by the SysClk (12/13/19.2) or by
- * 32KHz clk, or from external sig. This rate is divided by a local divisor.
+ * OMAP3 has 12 GP timers, they can be driven by the system clock
+ * (12/13/16.8/19.2/38.4MHz) or by 32KHz clock. We use 13MHz (V_SCLK).
+ * This rate is divided by a local divisor.
  */
 #define CONFIG_SYS_TIMERBASE		(OMAP34XX_GPT2)
-#define CONFIG_SYS_PTV			7	/* 2^(PTV+1) */
-#define CONFIG_SYS_HZ			((V_SCLK) / (2 << CONFIG_SYS_PTV))
+#define CONFIG_SYS_PTV			2       /* Divisor: 2^(PTV+1) => 8 */
+#define CONFIG_SYS_HZ			1000
 
 /*-----------------------------------------------------------------------
  * Stack sizes
diff --git a/include/configs/omap3_evm.h b/include/configs/omap3_evm.h
index ab014e9..549cef9 100644
--- a/include/configs/omap3_evm.h
+++ b/include/configs/omap3_evm.h
@@ -209,12 +209,13 @@
 								/* address */
 
 /*
- * 2430 has 12 GP timers, they can be driven by the SysClk (12/13/19.2) or by
- * 32KHz clk, or from external sig. This rate is divided by a local divisor.
+ * OMAP3 has 12 GP timers, they can be driven by the system clock
+ * (12/13/16.8/19.2/38.4MHz) or by 32KHz clock. We use 13MHz (V_SCLK).
+ * This rate is divided by a local divisor.
  */
 #define CONFIG_SYS_TIMERBASE		OMAP34XX_GPT2
-#define CONFIG_SYS_PTV			7	/* 2^(PTV+1) */
-#define CONFIG_SYS_HZ			((V_SCLK) / (2 << CONFIG_SYS_PTV))
+#define CONFIG_SYS_PTV			2	/* Divisor: 2^(PTV+1) => 8 */
+#define CONFIG_SYS_HZ			1000
 
 /*-----------------------------------------------------------------------
  * Stack sizes
diff --git a/include/configs/omap3_overo.h b/include/configs/omap3_overo.h
index d941497..8902312 100644
--- a/include/configs/omap3_overo.h
+++ b/include/configs/omap3_overo.h
@@ -201,14 +201,14 @@
 
 #define CONFIG_SYS_LOAD_ADDR		(OMAP34XX_SDRC_CS0) /* default load */
 								/* address */
-
 /*
- * 2430 has 12 GP timers, they can be driven by the SysClk (12/13/19.2) or by
- * 32KHz clk, or from external sig. This rate is divided by a local divisor.
+ * OMAP3 has 12 GP timers, they can be driven by the system clock
+ * (12/13/16.8/19.2/38.4MHz) or by 32KHz clock. We use 13MHz (V_SCLK).
+ * This rate is divided by a local divisor.
  */
-#define CONFIG_SYS_TIMERBASE		(OMAP34XX_GPT2)
-#define CONFIG_SYS_PTV			7	/* 2^(PTV+1) */
-#define CONFIG_SYS_HZ			((V_SCLK) / (2 << CONFIG_SYS_PTV))
+#define CONFIG_SYS_TIMERBASE		OMAP34XX_GPT2
+#define CONFIG_SYS_PTV			2	/* Divisor: 2^(PTV+1) => 8 */
+#define CONFIG_SYS_HZ			1000
 
 /*-----------------------------------------------------------------------
  * Stack sizes
diff --git a/include/configs/omap3_pandora.h b/include/configs/omap3_pandora.h
index f9f6480..dbd4dcc 100644
--- a/include/configs/omap3_pandora.h
+++ b/include/configs/omap3_pandora.h
@@ -206,12 +206,13 @@
 								/* address */
 
 /*
- * 2430 has 12 GP timers, they can be driven by the SysClk (12/13/19.2) or by
- * 32KHz clk, or from external sig. This rate is divided by a local divisor.
+ * OMAP3 has 12 GP timers, they can be driven by the system clock
+ * (12/13/16.8/19.2/38.4MHz) or by 32KHz clock. We use 13MHz (V_SCLK).
+ * This rate is divided by a local divisor.
  */
-#define CONFIG_SYS_TIMERBASE		(OMAP34XX_GPT2)
-#define CONFIG_SYS_PTV			7	/* 2^(PTV+1) */
-#define CONFIG_SYS_HZ			((V_SCLK) / (2 << CONFIG_SYS_PTV))
+#define CONFIG_SYS_TIMERBASE		OMAP34XX_GPT2
+#define CONFIG_SYS_PTV			2	/* Divisor: 2^(PTV+1) => 8 */
+#define CONFIG_SYS_HZ			1000
 
 /*-----------------------------------------------------------------------
  * Stack sizes
diff --git a/include/configs/omap3_zoom1.h b/include/configs/omap3_zoom1.h
index b275b15..50c05dc 100644
--- a/include/configs/omap3_zoom1.h
+++ b/include/configs/omap3_zoom1.h
@@ -226,12 +226,13 @@
 							/* load address */
 
 /*
- * 2430 has 12 GP timers, they can be driven by the SysClk (12/13/19.2) or by
- * 32KHz clk, or from external sig. This rate is divided by a local divisor.
+ * OMAP3 has 12 GP timers, they can be driven by the system clock
+ * (12/13/16.8/19.2/38.4MHz) or by 32KHz clock. We use 13MHz (V_SCLK).
+ * This rate is divided by a local divisor.
  */
-#define CONFIG_SYS_TIMERBASE		(OMAP34XX_GPT2)
-#define CONFIG_SYS_PTV			7	/* 2^(PTV+1) */
-#define CONFIG_SYS_HZ			((V_SCLK) / (2 << CONFIG_SYS_PTV))
+#define CONFIG_SYS_TIMERBASE		OMAP34XX_GPT2
+#define CONFIG_SYS_PTV			2	/* Divisor: 2^(PTV+1) => 8 */
+#define CONFIG_SYS_HZ			1000
 
 /*-----------------------------------------------------------------------
  * Stack sizes