* [PATCH v2 1/2] dt-bindings: interconnect: qcom-bwmon: add nord cpu-bwmon compatible
2026-09-24 7:32 [PATCH v2 0/2] Add BWMON support for Nord SoC Shawn Guo
@ 2026-09-24 7:32 ` Shawn Guo
2026-09-24 12:25 ` Bartosz Golaszewski
2026-09-24 7:32 ` [PATCH v2 2/2] arm64: dts: qcom: nord: Add bwmon node for Nord Shawn Guo
1 sibling, 1 reply; 5+ messages in thread
From: Shawn Guo @ 2026-09-24 7:32 UTC (permalink / raw)
To: Bjorn Andersson
Cc: Konrad Dybcio, Rob Herring, Krzysztof Kozlowski, Conor Dooley,
Georgi Djakov, Bartosz Golaszewski, Zhangfei Gao,
Pushpendra Singh, devicetree, linux-arm-msm, linux-kernel,
Krzysztof Kozlowski
From: Zhangfei Gao <zhangfei.gao@oss.qualcomm.com>
Document the qcom,nord-cpu-bwmon fallback compatible used by the
CPU bandwidth monitors on Nord.
Signed-off-by: Zhangfei Gao <zhangfei.gao@oss.qualcomm.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Acked-by: Georgi Djakov <djakov@kernel.org>
---
.../devicetree/bindings/interconnect/qcom,msm8998-bwmon.yaml | 1 +
1 file changed, 1 insertion(+)
diff --git a/Documentation/devicetree/bindings/interconnect/qcom,msm8998-bwmon.yaml b/Documentation/devicetree/bindings/interconnect/qcom,msm8998-bwmon.yaml
index f6969910bded..3db61c38e2e7 100644
--- a/Documentation/devicetree/bindings/interconnect/qcom,msm8998-bwmon.yaml
+++ b/Documentation/devicetree/bindings/interconnect/qcom,msm8998-bwmon.yaml
@@ -30,6 +30,7 @@ properties:
- qcom,hawi-cpu-bwmon
- qcom,kaanapali-cpu-bwmon
- qcom,maili-cpu-bwmon
+ - qcom,nord-cpu-bwmon
- qcom,qcm2290-cpu-bwmon
- qcom,qcs615-cpu-bwmon
- qcom,qcs8300-cpu-bwmon
--
2.43.0
^ permalink raw reply related [flat|nested] 5+ messages in thread* [PATCH v2 2/2] arm64: dts: qcom: nord: Add bwmon node for Nord
2026-09-24 7:32 [PATCH v2 0/2] Add BWMON support for Nord SoC Shawn Guo
2026-09-24 7:32 ` [PATCH v2 1/2] dt-bindings: interconnect: qcom-bwmon: add nord cpu-bwmon compatible Shawn Guo
@ 2026-09-24 7:32 ` Shawn Guo
2026-09-24 7:43 ` sashiko-bot
1 sibling, 1 reply; 5+ messages in thread
From: Shawn Guo @ 2026-09-24 7:32 UTC (permalink / raw)
To: Bjorn Andersson
Cc: Konrad Dybcio, Rob Herring, Krzysztof Kozlowski, Conor Dooley,
Georgi Djakov, Bartosz Golaszewski, Zhangfei Gao,
Pushpendra Singh, devicetree, linux-arm-msm, linux-kernel,
Bartosz Golaszewski, Konrad Dybcio, Shawn Guo
From: Pushpendra Singh <pussin@qti.qualcomm.com>
Add BWMON nodes and associated OPP tables to enable dynamic DDR/LLCC
frequency scaling.
The compatible is added in nord-embedded.dtsi rather than nord.dtsi,
because Embedded variant specific 'interconnects' is required by
the compatible.
Co-developed-by: Zhangfei Gao <zhangfei.gao@oss.qualcomm.com>
Signed-off-by: Zhangfei Gao <zhangfei.gao@oss.qualcomm.com>
Signed-off-by: Pushpendra Singh <pussin@qti.qualcomm.com>
Reviewed-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Signed-off-by: Shawn Guo <shengchao.guo@oss.qualcomm.com>
---
arch/arm64/boot/dts/qcom/nord-embedded.dtsi | 21 +++++++
arch/arm64/boot/dts/qcom/nord.dtsi | 67 +++++++++++++++++++++
2 files changed, 88 insertions(+)
diff --git a/arch/arm64/boot/dts/qcom/nord-embedded.dtsi b/arch/arm64/boot/dts/qcom/nord-embedded.dtsi
index 568fe68cd185..c27d01a82214 100644
--- a/arch/arm64/boot/dts/qcom/nord-embedded.dtsi
+++ b/arch/arm64/boot/dts/qcom/nord-embedded.dtsi
@@ -30,6 +30,27 @@ mc_virt: interconnect-mc-virt {
};
};
+&bwmon_cluster0 {
+ compatible = "qcom,nord-cpu-bwmon",
+ "qcom,sdm845-bwmon";
+ interconnects = <&hscnoc MASTER_APPSS_PROC QCOM_ICC_TAG_ACTIVE_ONLY
+ &mc_virt SLAVE_EBI1 QCOM_ICC_TAG_ACTIVE_ONLY>;
+};
+
+&bwmon_cluster1 {
+ compatible = "qcom,nord-cpu-bwmon",
+ "qcom,sdm845-bwmon";
+ interconnects = <&hscnoc MASTER_APPSS_PROC QCOM_ICC_TAG_ACTIVE_ONLY
+ &mc_virt SLAVE_EBI1 QCOM_ICC_TAG_ACTIVE_ONLY>;
+};
+
+&bwmon_cluster2 {
+ compatible = "qcom,nord-cpu-bwmon",
+ "qcom,sdm845-bwmon";
+ interconnects = <&hscnoc MASTER_APPSS_PROC QCOM_ICC_TAG_ACTIVE_ONLY
+ &mc_virt SLAVE_EBI1 QCOM_ICC_TAG_ACTIVE_ONLY>;
+};
+
&crypto {
interconnects = <&aggre1_noc_tile MASTER_CRYPTO_CORE0 QCOM_ICC_TAG_ALWAYS
&mc_virt SLAVE_EBI1 QCOM_ICC_TAG_ALWAYS>;
diff --git a/arch/arm64/boot/dts/qcom/nord.dtsi b/arch/arm64/boot/dts/qcom/nord.dtsi
index e0496fd40c30..4c3504b2a233 100644
--- a/arch/arm64/boot/dts/qcom/nord.dtsi
+++ b/arch/arm64/boot/dts/qcom/nord.dtsi
@@ -1460,6 +1460,73 @@ uart13: serial@a98000 {
};
};
+ bwmon_cluster2: pmu@1014400 {
+ reg = <0x0 0x01014400 0x0 0x500>;
+ interrupts = <GIC_SPI 739 IRQ_TYPE_LEVEL_HIGH>;
+ operating-points-v2 = <&bwmon_cluster_opp_table>;
+ };
+
+ bwmon_cluster1: pmu@1015400 {
+ reg = <0x0 0x01015400 0x0 0x500>;
+ interrupts = <GIC_SPI 812 IRQ_TYPE_LEVEL_HIGH>;
+ operating-points-v2 = <&bwmon_cluster_opp_table>;
+ };
+
+ bwmon_cluster0: pmu@1016400 {
+ reg = <0x0 0x01016400 0x0 0x500>;
+ interrupts = <GIC_SPI 813 IRQ_TYPE_LEVEL_HIGH>;
+
+ operating-points-v2 = <&bwmon_cluster_opp_table>;
+
+ bwmon_cluster_opp_table: opp-table {
+ compatible = "operating-points-v2";
+
+ opp-0 {
+ opp-peak-kBps = <800000>;
+ };
+
+ opp-1 {
+ opp-peak-kBps = <2188800>;
+ };
+
+ opp-2 {
+ opp-peak-kBps = <5414400>;
+ };
+
+ opp-3 {
+ opp-peak-kBps = <6220800>;
+ };
+
+ opp-4 {
+ opp-peak-kBps = <6835200>;
+ };
+
+ opp-5 {
+ opp-peak-kBps = <7603200>;
+ };
+
+ opp-6 {
+ opp-peak-kBps = <8371200>;
+ };
+
+ opp-7 {
+ opp-peak-kBps = <9657600>;
+ };
+
+ opp-8 {
+ opp-peak-kBps = <10944000>;
+ };
+
+ opp-9 {
+ opp-peak-kBps = <12748800>;
+ };
+
+ opp-10 {
+ opp-peak-kBps = <14745600>;
+ };
+ };
+ };
+
rng: rng@10c3000 {
compatible = "qcom,nord-trng",
"qcom,trng";
--
2.43.0
^ permalink raw reply related [flat|nested] 5+ messages in thread