Re: [PATCH v3 5/6] arm64: dts: qcom: sm6150: Add gpu and rgmu nodes

[Akhil P Oommen]

On 12/4/2025 7:01 PM, Konrad Dybcio wrote:
> On 12/4/25 11:13 AM, Akhil P Oommen wrote:
>> On 11/26/2025 6:12 AM, Dmitry Baryshkov wrote:
>>> On Sat, Nov 22, 2025 at 03:03:10PM +0100, Konrad Dybcio wrote:
>>>> On 11/21/25 10:52 PM, Akhil P Oommen wrote:
>>>>> From: Jie Zhang <quic_jiezh@xxxxxxxxxxx>
>>>>>
>>>>> Add gpu and rgmu nodes for qcs615 chipset.
>>>>>
>>>>> Signed-off-by: Jie Zhang <quic_jiezh@xxxxxxxxxxx>
>>>>> Signed-off-by: Akhil P Oommen <akhilpo@xxxxxxxxxxxxxxxx>
>>>>> ---
>>>>
>>>> [...]
>>>>
>>>>> +			gpu_opp_table: opp-table {
>>>>> +				compatible = "operating-points-v2";
>>>>> +
>>>>> +				opp-845000000 {
>>>>> +					opp-hz = /bits/ 64 <845000000>;
>>>>> +					required-opps = <&rpmhpd_opp_turbo>;
>>>>> +					opp-peak-kBps = <7050000>;
>>>>> +				};
>>>>
>>>> I see another speed of 895 @ turbo_l1, perhaps that's for speedbins
>>>> or mobile parts specifically?
>>>
>>> msm-4.14 defines 7 speedbins for SM6150. Akhil, I don't see any of them
>>> here.
>>
>> The IoT/Auto variants have a different frequency plan compared to the
>> mobile variant. I reviewed the downstream code and this aligns with that
>> except the 290Mhz corner. We can remove that one.
>>
>> Here we are describing the IoT variant of Talos. So we can ignore the
>> speedbins from the mobile variant until that is supported.
> 
> Writing this reply took probably only slightly less time than fixing
> the issue.. I really see no point in kicking the can down the road

We don't know the speedbin fuse register and the values applicable for
this IoT chipset. Currently, there is only a single variant and no SKUs
for this chipset. We can add them when those decisions are taken by the
relevant folks from Product team.

-Akhil.

> 
> Konrad