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 ---
arch/x86/cpu/quark/Kconfig | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/arch/x86/cpu/quark/Kconfig b/arch/x86/cpu/quark/Kconfig index 163caac..bc961ef 100644 --- a/arch/x86/cpu/quark/Kconfig +++ b/arch/x86/cpu/quark/Kconfig @@ -7,6 +7,7 @@ config INTEL_QUARK bool select HAVE_RMU + select TSC_CALIBRATION_BYPASS
if INTEL_QUARK
@@ -118,4 +119,8 @@ config SYS_CAR_SIZE Space in bytes in eSRAM used as Cache-As-ARM (CAR). Note this size must not exceed eSRAM's total size.
+config TSC_FREQ_IN_MHZ + int + default 400 + endif