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MIPS: Octeon: Add octeon_get_io_clock_rate() for cn63xx

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Starting with cn63xx Octeon I/O blocks are clocked at a different rate
than the CPU.  Add a new function octeon_get_io_clock_rate() that
yields the I/O clock rate.

Also rearrange octeon_get_clock_rate() to get the value from the saved
sysinfo structure.

Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Patchwork: http://patchwork.linux-mips.org/patch/1671/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
David Daney
2010-10-07 16:03:49 -07:00
committed by Ralf Baechle
parent 3b29dadff9
commit e195aa3039
2 changed files with 49 additions and 28 deletions
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arch/mips/include/asm/octeon/octeon.h
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@ -35,6 +35,7 @@ extern int octeon_is_simulation(void);
extern int octeon_is_pci_host(void);
extern int octeon_usb_is_ref_clk(void);
extern uint64_t octeon_get_clock_rate(void);
extern u64 octeon_get_io_clock_rate(void);
extern const char *octeon_board_type_string(void);
extern const char *octeon_get_pci_interrupts(void);
extern int octeon_get_southbridge_interrupt(void);