Re: [PATCH v4 5/6] MIPS: CI20: Modify DTS to support high resolution timer for SMP.

[Zhou Yanjie <zhouyanjie@wanyeetech.com>]

Hi Paul,

On 2020年02月15日 02:37, Paul Cercueil wrote:
> Hi Zhou,
>
> I think you can move this patch before the clocksource one - it will 
> work with the old clocksource code and in generally it's a good idea 
> to ensure (if possible) that you can git-bisect without ending up with 
> a broken kernel.

OK, I will do it in v5.

>
> -Paul
>
>
> Le sam., févr. 15, 2020 at 02:02, 周琰杰 (Zhou Yanjie) 
> <zhouyanjie@wanyeetech.com> a écrit :
>> Modify DTS, change tcu channel from 2 to 3, channel #0 and #1 for
>> per core local timer, #2 for clocksource.
>>
>> Tested-by: H. Nikolaus Schaller <hns@goldelico.com>
>> Tested-by: Paul Boddie <paul@boddie.org.uk>
>> Signed-off-by: 周琰杰 (Zhou Yanjie) <zhouyanjie@wanyeetech.com>
>> ---
>>
>> Notes:
>>     v1->v2:
>>     No change.
>>
>>     v2->v3:
>>     No change.
>>
>>     v3->v4:
>>     Rebase on top of kernel 5.6-rc1.
>>
>>  arch/mips/boot/dts/ingenic/ci20.dts | 11 +++++++++--
>>  1 file changed, 9 insertions(+), 2 deletions(-)
>>
>> diff --git a/arch/mips/boot/dts/ingenic/ci20.dts 
>> b/arch/mips/boot/dts/ingenic/ci20.dts
>> index 37b9316..98c4c42 100644
>> --- a/arch/mips/boot/dts/ingenic/ci20.dts
>> +++ b/arch/mips/boot/dts/ingenic/ci20.dts
>> @@ -456,6 +456,13 @@
>>
>>  &tcu {
>>      /* 3 MHz for the system timer and clocksource */
>> -    assigned-clocks = <&tcu TCU_CLK_TIMER0>, <&tcu TCU_CLK_TIMER1>;
>> -    assigned-clock-rates = <3000000>, <3000000>;
>> +    assigned-clocks = <&tcu TCU_CLK_TIMER0>, <&tcu TCU_CLK_TIMER1>,
>> +                      <&tcu TCU_CLK_TIMER2>;
>> +    assigned-clock-rates = <3000000>, <3000000>, <750000>;
>> +
>> +    /*
>> +     * Use channel #0 and #1 for the per core system timer,
>> +     * and use channel #2 for the clocksource.
>> +     */
>> +    ingenic,pwm-channels-mask = <0xF8>;
>>  };
>> -- 
>> 2.7.4
>>
>