Re: [PATCH] arm64: dts: qcom: glymur: Add glymur BWMONs

[Pragnesh Papaniya <pragnesh.papaniya@oss.qualcomm.com>]

On 3/2/2026 6:27 PM, Konrad Dybcio wrote:
> On 3/2/26 12:46 PM, Pragnesh Papaniya wrote:
>> Add the CPU BWMON nodes for glymur SoCs.
>>
>> Co-developed-by: Sibi Sankar <sibi.sankar@oss.qualcomm.com>
>> Signed-off-by: Sibi Sankar <sibi.sankar@oss.qualcomm.com>
>> Signed-off-by: Pragnesh Papaniya <pragnesh.papaniya@oss.qualcomm.com>
>> ---
>>  arch/arm64/boot/dts/qcom/glymur.dtsi | 87 ++++++++++++++++++++++++++++++++++++
>>  1 file changed, 87 insertions(+)
>>
>> diff --git a/arch/arm64/boot/dts/qcom/glymur.dtsi b/arch/arm64/boot/dts/qcom/glymur.dtsi
>> index e269cec7942c..fd947b1a17dd 100644
>> --- a/arch/arm64/boot/dts/qcom/glymur.dtsi
>> +++ b/arch/arm64/boot/dts/qcom/glymur.dtsi
>> @@ -2264,6 +2264,93 @@ &config_noc SLAVE_QUP_0 QCOM_ICC_TAG_ALWAYS>,
>>  			};
>>  		};
>>  
>> +		/* cluster0 */
>> +		bwmon_cluster0: pmu@100c400 {
>> +			compatible = "qcom,glymur-cpu-bwmon", "qcom,sdm845-bwmon";
>> +			reg = <0x0 0x0100c400 0x0 0x600>;
>> +
>> +			interrupts = <GIC_SPI 903 IRQ_TYPE_LEVEL_HIGH>;
>> +
>> +			interconnects = <&hsc_noc MASTER_APPSS_PROC QCOM_ICC_TAG_ACTIVE_ONLY
>> +					 &mc_virt SLAVE_EBI1 QCOM_ICC_TAG_ACTIVE_ONLY>;
>> +
>> +			operating-points-v2 = <&cpu_bwmon_opp_table>;
>> +
>> +			cpu_bwmon_opp_table: opp-table {
>> +				compatible = "operating-points-v2";
>> +
>> +				opp-0 {
>> +					opp-peak-kBps = <800000>;
>> +				};
> 
> Can these values remain unchanged vs hamoa? Glymur has more memory
> channels (as reflected in the icc driver) so the values send to rpmh
> will be a third lower
> 
> Similarly, hamoa has roughly the same values as kona, which has half
> the channels
> 
> Konrad
opp-peak-kBps is proportional to bus_width and is calculated as follows:
 
opp-peak-kBps = (Hz * node_bus_width)/ 1000
 
All the existing targets do the same, since bcm_aggregate() in 
bcm-voter.c divides max_peak with buswidth.

-Pragnesh