[PATCH] m68knommu: configurable frequency selection

Remove list of fixed clock frequency options used for configuring master
clock, and make field an int. Much more flexible this way, no need to add
more options for every new used freqency.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 33 insertions, 115 deletions

diff --git a/arch/m68knommu/Kconfig b/arch/m68knommu/Kconfig
index 640a4bf..6c6980b 100644
--- a/arch/m68knommu/Kconfig
+++ b/arch/m68knommu/Kconfig
@@ -141,122 +141,40 @@ config COLDFIRE
 	depends on (M5206 || M5206e || M520x || M523x || M5249 || M527x || M5272 || M528x || M5307 || M532x || M5407)
 	default y
 
-choice
-	prompt "CPU CLOCK Frequency"
-	default AUTO
-
-config CLOCK_AUTO
-	bool "AUTO"
-	---help---
-	  Define the CPU clock frequency in use. On many boards you don't
-	  really need to know, so you can select the AUTO option. On some
-	  boards you need to know the real clock frequency to determine other
-	  system timing (for example baud rate dividors, etc). Some processors
-	  have an internal PLL and you can select a frequency to run at.
-	  You need to know a little about the internals of your processor to
-	  set this. If in doubt choose the AUTO option.
-
-config CLOCK_11MHz
-	bool "11MHz"
-	help
-	  Select a 11MHz CPU clock frequency.
-
-config CLOCK_16MHz
-	bool "16MHz"
-	help
-	  Select a 16MHz CPU clock frequency.
-
-config CLOCK_20MHz
-	bool "20MHz"
-	help
-	  Select a 20MHz CPU clock frequency.
-
-config CLOCK_24MHz
-	bool "24MHz"
-	help
-	  Select a 24MHz CPU clock frequency.
-
-config CLOCK_25MHz
-	bool "25MHz"
-	help
-	  Select a 25MHz CPU clock frequency.
-
-config CLOCK_33MHz
-	bool "33MHz"
-	help
-	  Select a 33MHz CPU clock frequency.
-
-config CLOCK_40MHz
-	bool "40MHz"
-	help
-	  Select a 40MHz CPU clock frequency.
-
-config CLOCK_45MHz
-	bool "45MHz"
-	help
-	  Select a 45MHz CPU clock frequency.
-
-config CLOCK_48MHz
-	bool "48MHz"
-	help
-	  Select a 48MHz CPU clock frequency.
-
-config CLOCK_50MHz
-	bool "50MHz"
-	help
-	  Select a 50MHz CPU clock frequency.
-
-config CLOCK_54MHz
-	bool "54MHz"
-	help
-	  Select a 54MHz CPU clock frequency.
-
-config CLOCK_60MHz
-	bool "60MHz"
-	help
-	  Select a 60MHz CPU clock frequency.
-
-config CLOCK_62_5MHz
-	bool "62.5MHz"
-	help
-	  Select a 62.5MHz CPU clock frequency.
-
-config CLOCK_64MHz
-	bool "64MHz"
-	help
-	  Select a 64MHz CPU clock frequency.
-
-config CLOCK_66MHz
-	bool "66MHz"
-	help
-	  Select a 66MHz CPU clock frequency.
-
-config CLOCK_70MHz
-	bool "70MHz"
-	help
-	  Select a 70MHz CPU clock frequency.
-
-config CLOCK_100MHz
-	bool "100MHz"
-	help
-	  Select a 100MHz CPU clock frequency.
-
-config CLOCK_140MHz
-	bool "140MHz"
-	help
-	  Select a 140MHz CPU clock frequency.
-
-config CLOCK_150MHz
-	bool "150MHz"
-	help
-	  Select a 150MHz CPU clock frequency.
-
-config CLOCK_166MHz
-	bool "166MHz"
+config CLOCK_SET
+	bool "Enable setting the CPU clock frequency"
+	default n
 	help
-	  Select a 166MHz CPU clock frequency.
-
-endchoice
+	  On some CPU's you do not need to know what the core CPU clock
+	  frequency is. On these you can disable clock setting. On some
+	  traditional 68K parts, and on all ColdFire parts you need to set
+	  the appropriate CPU clock frequency. On these devices many of the
+	  onboard peripherals derive their timing from the master CPU clock
+	  frequency.
+
+config CLOCK_FREQ
+	int "Set the core clock frequency"
+	default "66666666"
+	depends on CLOCK_SET
+	help
+	  Define the CPU clock frequency in use. This is the core clock
+	  frequency, it may or may not be the same as the external clock
+	  crystal fitted to your board. Some processors have an internal
+	  PLL and can have their frequency programmed at run time, others
+	  use internal dividers. In gernal the kernel won't setup a PLL
+	  if it is fitted (there are some expections). 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 ration of the
+	  master clock to the peripheral clock. If not sure then select 1.
 
 config OLDMASK
 	bool "Old mask 5307 (1H55J) silicon"