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| author | Huacai Chen <chenhc@lemote.com> | 2014-11-04 14:15:31 +0800 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2014-11-24 07:45:02 +0100 |
| commit | e292ccde216e571faad475e4331c188f22a28182 (patch) | |
| tree | 18bd2792fa52b3cd3f1aa2bc305262b75f80d8f8 /arch/mips/loongson/Kconfig | |
| parent | 89467e73d3881a470ce4ffdcba1d5a5ed618379a (diff) | |
| download | linux-e292ccde216e571faad475e4331c188f22a28182.tar.bz2 | |
MIPS: Loongson-3: Add RS780/SBX00 HPET support
CPUFreq driver need external timer, so add hpet at first.
In Loongson 3, only Core-0 can receive external interrupt. As a result,
timekeeping cannot absolutely use HPET timer. We use a hybrid solution:
Core-0 use HPET as its clock event device, but other cores still use
MIPS; clock source is global and doesn't need interrupt, so use HPET.
Signed-off-by: Huacai Chen <chenhc@lemote.com>
Signed-off-by: Hongliang Tao <taohl@lemote.com>
Cc: John Crispin <john@phrozen.org>
Cc: Steven J. Hill <Steven.Hill@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: Fuxin Zhang <zhangfx@lemote.com>
Cc: Zhangjin Wu <wuzhangjin@gmail.com>
Patchwork: https://patchwork.linux-mips.org/patch/8329/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/loongson/Kconfig')
| -rw-r--r-- | arch/mips/loongson/Kconfig | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/arch/mips/loongson/Kconfig b/arch/mips/loongson/Kconfig index 72f830ac0782..156de85b82cd 100644 --- a/arch/mips/loongson/Kconfig +++ b/arch/mips/loongson/Kconfig @@ -108,6 +108,18 @@ config CS5536_MFGPT If unsure, say Yes. +config RS780_HPET + bool "RS780/SBX00 HPET Timer" + depends on LOONGSON_MACH3X + select MIPS_EXTERNAL_TIMER + help + This option enables the hpet timer of AMD RS780/SBX00. + + If you want to enable the Loongson3 CPUFreq Driver, Please enable + this option at first, otherwise, You will get wrong system time. + + If unsure, say Yes. + config LOONGSON_SUSPEND bool default y |