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x86: quark: Bypass TSC calibration

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For some unknown reason, the TSC calibration via PIT does not work on
Quark. Enable bypassing TSC calibration and override TSC_FREQ_IN_MHZ
to 400 per Quark datasheet in the Kconfig.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Acked-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Bin Meng
2015-02-05 23:42:21 +08:00
committed by Simon Glass
parent f56aeaa4ac
commit ea94532461
1 changed files with 5 additions and 0 deletions
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5
arch/x86/cpu/quark/Kconfig
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@@ -7,6 +7,7 @@
config INTEL_QUARK config INTEL_QUARK
bool bool
select HAVE_RMU select HAVE_RMU
select TSC_CALIBRATION_BYPASS
if INTEL_QUARK if INTEL_QUARK
@@ -118,4 +119,8 @@ config SYS_CAR_SIZE
Space in bytes in eSRAM used as Cache-As-ARM (CAR). Space in bytes in eSRAM used as Cache-As-ARM (CAR).
Note this size must not exceed eSRAM's total size. Note this size must not exceed eSRAM's total size.
config TSC_FREQ_IN_MHZ
int
default 400
endif endif