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x86/tsr: Fix tsc frequency enumeration bug on Lightning Mountain SoC
[ Upstream commit7d98585860
] Frequency descriptor of Lightning Mountain SoC doesn't have all the frequency entries so resulting in the below failure causing a kernel hang: Error MSR_FSB_FREQ index 15 is unknown tsc: Fast TSC calibration failed So, add all the frequency entries in the Lightning Mountain SoC frequency descriptor. Fixes:0cc5359d8f
("x86/cpu: Update init data for new Airmont CPU model") Fixes:812c2d7506
("x86/tsc_msr: Use named struct initializers") Signed-off-by: Dilip Kota <eswara.kota@linux.intel.com> Signed-off-by: Ingo Molnar <mingo@kernel.org> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Link: https://lore.kernel.org/r/211c643ae217604b46cbec43a2c0423946dc7d2d.1596440057.git.eswara.kota@linux.intel.com Signed-off-by: Sasha Levin <sashal@kernel.org>
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1 changed files with 7 additions and 2 deletions
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@ -133,10 +133,15 @@ static const struct freq_desc freq_desc_ann = {
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.mask = 0x0f,
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};
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/* 24 MHz crystal? : 24 * 13 / 4 = 78 MHz */
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/*
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* 24 MHz crystal? : 24 * 13 / 4 = 78 MHz
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* Frequency step for Lightning Mountain SoC is fixed to 78 MHz,
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* so all the frequency entries are 78000.
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*/
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static const struct freq_desc freq_desc_lgm = {
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.use_msr_plat = true,
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.freqs = { 78000, 78000, 78000, 78000, 78000, 78000, 78000, 78000 },
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.freqs = { 78000, 78000, 78000, 78000, 78000, 78000, 78000, 78000,
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78000, 78000, 78000, 78000, 78000, 78000, 78000, 78000 },
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.mask = 0x0f,
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};
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