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[PATCH] m68knommu: configurable frequency selection

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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>
This commit is contained in:
Greg Ungerer 2006-06-26 10:55:36 +10:00 committed by Linus Torvalds
parent 04860bd22f
commit e648cd2688
1 changed files with 29 additions and 111 deletions
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140
arch/m68knommu/Kconfig
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@ -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"
config CLOCK_SET
bool "Enable setting the CPU clock frequency"
default n
help
Select a 11MHz CPU clock frequency.
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_16MHz
bool "16MHz"
config CLOCK_FREQ
int "Set the core clock frequency"
default "66666666"
depends on CLOCK_SET
help
Select a 16MHz CPU clock frequency.
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_20MHz
bool "20MHz"
config CLOCK_DIV
int "Set the core/bus clock divide ratio"
default "1"
depends on CLOCK_SET
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"
help
Select a 166MHz CPU clock frequency.
endchoice
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"