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SubjectRe: [PATCH v2] arm64: dts: qcom: sdm845: Add cpu OPP tables
On 2020-07-09 19:59, Bjorn Andersson wrote:
> On Wed 08 Jul 19:22 PDT 2020, Steev Klimaszewski wrote:
>
>>
>> On 7/2/20 3:46 PM, Sibi Sankar wrote:
>> > Add OPP tables required to scale DDR/L3 per freq-domain on SDM845 SoCs.
>> >
>> > Signed-off-by: Sibi Sankar <sibis@codeaurora.org>
>> > ---
>>
>>
>> Hi Sibi,
>>
>>
>> Bjorn asked me to give this patch a whirl, and I have to say, I like
>> it
>> but I'm not sure if I'm missing a dependency somewhere...
>>
>>
>> In 5.8.0-rc4, I'm seeing a couple probe defers
>>
>> [    0.131341] cpu cpu0: _allocate_opp_table: Error finding
>> interconnect
>> paths: -517
>>
>> [    0.132694] cpu cpu4: _allocate_opp_table: Error finding
>> interconnect
>> paths: -517
>>
>> And then a bit later on,
>>
>> [    0.625837] cpu cpu0: failed to get clock: -2
>>
>>
>> If these aren't anything to worry about, you can throw my Tested-by on
>>
>> Tested-by: Steev Klimaszewski <steev@kali.org>
>>
>
> You need to enable:
> CONFIG_INTERCONNECT=y
> CONFIG_INTERCONNECT_QCOM=y
> CONFIG_INTERCONNECT_QCOM_OSM_L3=m
> CONFIG_INTERCONNECT_QCOM_SDM845=m

Steev had ^^ enabled but he was missing
the required cpufreq driver changes
available in linux-next.

>
> With this I can see the interconnect_summary in debugfs change with the
> CPU frequency.
>
> Regards,
> Bjorn

--
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
a Linux Foundation Collaborative Project.

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