m68knommu: remove ColdFire CLOCK_DIV config option

The reality is that you do not need the abiltity to configure the clock divider for ColdFire CPUs. It is a fixed ratio on any given ColdFire family member. It is not the same for all ColdFire parts, but it is always the same in a model range. So hard define the divider for each supported ColdFire CPU type and remove the Kconfig option. Signed-off-by: Greg Ungerer <gerg@uclinux.org>
mariux64 · Mar 15, 2011 · ce3de78 · ce3de78
1 parent 442ca46
commit ce3de78
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Showing 13 changed files with 15 additions and 16 deletions.
diff --git a/arch/m68k/include/asm/coldfire.h b/arch/m68k/include/asm/coldfire.h
@@ -14,14 +14,13 @@
 
 
 /*
- *	Define master clock frequency. This is essentially done at config
- *	time now. No point enumerating dozens of possible clock options
- *	here. Also the peripheral clock (bus clock) divide ratio is set
- *	at config time too.
+ *	Define master clock frequency. This is done at config time now.
+ *	No point enumerating dozens of possible clock options here. And
+ *	in any case new boards come along from time to time that have yet
+ *	another different clocking frequency.
  */
 #ifdef CONFIG_CLOCK_SET
 #define	MCF_CLK		CONFIG_CLOCK_FREQ
-#define	MCF_BUSCLK	(CONFIG_CLOCK_FREQ / CONFIG_CLOCK_DIV)
 #else
 #error "Don't know what your ColdFire CPU clock frequency is??"
 #endif

diff --git a/arch/m68k/include/asm/m5206sim.h b/arch/m68k/include/asm/m5206sim.h
@@ -14,6 +14,7 @@
 
 #define	CPU_NAME		"COLDFIRE(m5206)"
 #define	CPU_INSTR_PER_JIFFY	3
+#define	MCF_BUSCLK		MCF_CLK
 
 #include <asm/m52xxacr.h>
 

diff --git a/arch/m68k/include/asm/m520xsim.h b/arch/m68k/include/asm/m520xsim.h
@@ -13,6 +13,7 @@
 
 #define	CPU_NAME		"COLDFIRE(m520x)"
 #define	CPU_INSTR_PER_JIFFY	3
+#define	MCF_BUSCLK		(MCF_CLK / 2)
 
 #include <asm/m52xxacr.h>
 

diff --git a/arch/m68k/include/asm/m523xsim.h b/arch/m68k/include/asm/m523xsim.h
@@ -13,6 +13,7 @@
 
 #define	CPU_NAME		"COLDFIRE(m523x)"
 #define	CPU_INSTR_PER_JIFFY	3
+#define	MCF_BUSCLK		(MCF_CLK / 2)
 
 #include <asm/m52xxacr.h>
 

diff --git a/arch/m68k/include/asm/m5249sim.h b/arch/m68k/include/asm/m5249sim.h
@@ -13,6 +13,7 @@
 
 #define	CPU_NAME		"COLDFIRE(m5249)"
 #define	CPU_INSTR_PER_JIFFY	3
+#define	MCF_BUSCLK		(MCF_CLK / 2)
 
 #include <asm/m52xxacr.h>
 

diff --git a/arch/m68k/include/asm/m5272sim.h b/arch/m68k/include/asm/m5272sim.h
@@ -14,6 +14,7 @@
 
 #define	CPU_NAME		"COLDFIRE(m5272)"
 #define	CPU_INSTR_PER_JIFFY	3
+#define	MCF_BUSCLK		MCF_CLK
 
 #include <asm/m52xxacr.h>
 

diff --git a/arch/m68k/include/asm/m527xsim.h b/arch/m68k/include/asm/m527xsim.h
@@ -13,6 +13,7 @@
 
 #define	CPU_NAME		"COLDFIRE(m527x)"
 #define	CPU_INSTR_PER_JIFFY	3
+#define	MCF_BUSCLK		(MCF_CLK / 2)
 
 #include <asm/m52xxacr.h>
 

diff --git a/arch/m68k/include/asm/m528xsim.h b/arch/m68k/include/asm/m528xsim.h
@@ -13,6 +13,7 @@
 
 #define	CPU_NAME		"COLDFIRE(m528x)"
 #define	CPU_INSTR_PER_JIFFY	3
+#define	MCF_BUSCLK		MCF_CLK
 
 #include <asm/m52xxacr.h>
 

diff --git a/arch/m68k/include/asm/m5307sim.h b/arch/m68k/include/asm/m5307sim.h
@@ -16,6 +16,7 @@
 
 #define	CPU_NAME		"COLDFIRE(m5307)"
 #define	CPU_INSTR_PER_JIFFY	3
+#define	MCF_BUSCLK		(MCF_CLK / 2)
 
 #include <asm/m53xxacr.h>
 

diff --git a/arch/m68k/include/asm/m532xsim.h b/arch/m68k/include/asm/m532xsim.h
@@ -11,6 +11,7 @@
 
 #define	CPU_NAME		"COLDFIRE(m532x)"
 #define	CPU_INSTR_PER_JIFFY	3
+#define	MCF_BUSCLK		(MCF_CLK / 3)
 
 #include <asm/m53xxacr.h>
 

diff --git a/arch/m68k/include/asm/m5407sim.h b/arch/m68k/include/asm/m5407sim.h
@@ -16,6 +16,7 @@
 
 #define	CPU_NAME		"COLDFIRE(m5407)"
 #define	CPU_INSTR_PER_JIFFY	3
+#define	MCF_BUSCLK		(MCF_CLK / 2)
 
 #include <asm/m54xxacr.h>
 

diff --git a/arch/m68k/include/asm/m54xxsim.h b/arch/m68k/include/asm/m54xxsim.h
@@ -7,6 +7,7 @@
 
 #define	CPU_NAME		"COLDFIRE(m54xx)"
 #define	CPU_INSTR_PER_JIFFY	2
+#define	MCF_BUSCLK		(MCF_CLK / 2)
 
 #include <asm/m54xxacr.h>
 

diff --git a/arch/m68knommu/Kconfig b/arch/m68knommu/Kconfig
@@ -260,17 +260,6 @@ config CLOCK_FREQ
 	  if it is fitted (there are some exceptions). This value will be
 	  specific to the exact CPU that you are using.
 
-config CLOCK_DIV
-	int "Set the core/bus clock divide ratio"
-	default "1"
-	depends on CLOCK_SET
-	help
-	  On many SoC style CPUs the master CPU clock is also used to drive 
-	  on-chip peripherals. The clock that is distributed to these
-	  peripherals is sometimes a fixed ratio of the master clock
-	  frequency. If so then set this to the divider ratio of the
-	  master clock to the peripheral clock. If not sure then select 1.
-
 config OLDMASK
 	bool "Old mask 5307 (1H55J) silicon"
 	depends on M5307