Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
[MIPS] Cleanup remaining references to mips_counter_frequency.
Noticed by Samium Gromoff but his patch got stale in flight ...
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Documentation/mips/time.README
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Documentation/mips/time.README
···
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a) board_time_init - a function pointer. Invoked at the beginnig of
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time_init(). It is optional.
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1. (optional) set up RTC routines
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2. (optional) calibrate and set the mips_counter_frequency
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2. (optional) calibrate and set the mips_hpt_frequency
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b) plat_timer_setup - a function pointer. Invoked at the end of time_init()
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1. (optional) over-ride any decisions made in time_init()
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c) (optional) board-specific RTC routines.
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d) (optional) mips_counter_frequency - It must be definied if the board
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d) (optional) mips_hpt_frequency - It must be definied if the board
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is using CPU counter for timer interrupt or it is using fixed rate
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gettimeoffset().
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···
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or use an exnternal timer?
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In order to use CPU counter register as the timer interrupt source, you
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must know the counter speed (mips_counter_frequency). It is usually the
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must know the counter speed (mips_hpt_frequency). It is usually the
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same as the CPU speed or an integral divisor of it.
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d) decide on whether you want to use high-level or low-level timer
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if needed.
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board_time_init() -
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a) (optional) set up RTC routines,
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b) (optional) calibrate and set the mips_counter_frequency
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a) (optional) set up RTC routines,
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b) (optional) calibrate and set the mips_hpt_frequency
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(only needed if you intended to use fixed_rate_gettimeoffset
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or use cpu counter as timer interrupt source)
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arch/mips/mips-boards/generic/time.c
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arch/mips/mips-boards/generic/time.c
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arch/mips/mips-boards/sim/sim_time.c
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arch/mips/mips-boards/sim/sim_time.c