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| author | Jayachandran C <jchandra@broadcom.com> | 2013-01-14 15:11:57 +0000 |
|---|---|---|
| committer | John Crispin <blogic@openwrt.org> | 2013-02-17 00:15:20 +0100 |
| commit | 4e45e542cd742c1c3e30e7f252640644c66548b5 (patch) | |
| tree | d2c744190851b06cf7cd326ff3df16d2a6badae3 /arch/mips/pci | |
| parent | a69ba6293d11b7dfd395a742f3449d6ddda8ecad (diff) | |
| download | op-kernel-dev-4e45e542cd742c1c3e30e7f252640644c66548b5.zip op-kernel-dev-4e45e542cd742c1c3e30e7f252640644c66548b5.tar.gz | |
MIPS: Netlogic: Use PIC timer as a clocksource
The XLR/XLS/XLP PIC has a 8 countdown timers which run at the PIC
frequencey. One of these can be used as a clocksource to provide
timestamps that is common across cores. This can be used in place
of the count/compare clocksource which is per-CPU.
On XLR/XLS PIC registers are 32-bit, so we just use the lower 32-bits
of the PIC counter. On XLP, the whole 64-bit can be used.
Provide common macros and functions for PIC timer registers on XLR/XLS
and XLP, and use them to register a PIC clocksource.
Signed-off-by: Jayachandran C <jchandra@broadcom.com>
Patchwork: http://patchwork.linux-mips.org/patch/4786/
Signed-off-by: John Crispin <blogic@openwrt.org>
Diffstat (limited to 'arch/mips/pci')
0 files changed, 0 insertions, 0 deletions
