[U-Boot] [PATCH 5/6] x86: tsc: Correct Silvermont reference clock values

Bin Meng bmeng.cn at gmail.com
Tue Aug 1 12:21:56 UTC 2017


On Tue, Aug 1, 2017 at 5:11 PM, Simon Glass <sjg at chromium.org> wrote:
> On 25 July 2017 at 21:12, Bin Meng <bmeng.cn at gmail.com> wrote:
>> Atom processors use a 19.2 MHz crystal oscillator.
>>
>> Early processors generate 100 MHz via 19.2 MHz * 26 / 5 = 99.84 MHz.
>>
>> Later processors generate 100 MHz via 19.2 MHz * 125 / 24 = 100 MHz.
>>
>> Update the Silvermont-based tables accordingly, matching the Software
>> Developers Manual.
>>
>> Also, correct a 166 MHz entry that should have been 116 MHz, and add
>> a missing 80 MHz entry for VLV2.
>>
>> This keeps in sync with Linux kernel commit:
>>   05680e7: x86/tsc_msr: Correct Silvermont reference clock values
>>
>> Signed-off-by: Bin Meng <bmeng.cn at gmail.com>
>> ---
>>
>>  drivers/timer/tsc_timer.c | 8 ++++----
>>  1 file changed, 4 insertions(+), 4 deletions(-)
>>
>
> Reviewed-by: Simon Glass <sjg at chromium.org>

applied to u-boot-x86, thanks!


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