From 9e5bbfecb523aef0d01241b13d705ca8a48d7d7d Mon Sep 17 00:00:00 2001
From: Sayantan Chakraborty <sayantan.chakraborty@oss.qualcomm.com>
Date: Mon, 3 Aug 2026 16:56:31 +0530
Subject: [PATCH] arm64: dts: qcom: shikra: Add DDR BWMON support

Add CPU-to-DDR BWMON nodes and their corresponding opp tables for
Shikra SoC. This is necessary to enable power management and optimize
system performance from the perspective of dynamically changing DDR
frequencies.

Signed-off-by: Sayantan Chakraborty <sayantan.chakraborty@oss.qualcomm.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Signed-off-by: Komal Bajaj <komal.bajaj@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20260803-shikra-dt-m1-v7-2-7fec8e777076@oss.qualcomm.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
---
 arch/arm64/boot/dts/qcom/shikra.dtsi | 40 ++++++++++++++++++++++++++++
 1 file changed, 40 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/shikra.dtsi b/arch/arm64/boot/dts/qcom/shikra.dtsi
index 524c88615d08..3582352dcff7 100644
--- a/arch/arm64/boot/dts/qcom/shikra.dtsi
+++ b/arch/arm64/boot/dts/qcom/shikra.dtsi
@@ -661,6 +661,46 @@
 			};
 		};
 
+		pmu@c91000 {
+			compatible = "qcom,shikra-cpu-bwmon", "qcom,sc7280-llcc-bwmon";
+			reg = <0x0 0x00c91000 0x0 0x1000>;
+
+			interrupts = <GIC_SPI 468 IRQ_TYPE_LEVEL_HIGH 0>;
+
+			interconnects = <&mem_noc MASTER_AMPSS_M0 RPM_ACTIVE_TAG
+					 &mc_virt SLAVE_EBI_CH0 RPM_ACTIVE_TAG>;
+
+			operating-points-v2 = <&cpu_bwmon_opp_table>;
+
+			cpu_bwmon_opp_table: opp-table {
+				compatible = "operating-points-v2";
+
+				opp-0 {
+					opp-peak-kBps = <1200000>;
+				};
+
+				opp-1 {
+					opp-peak-kBps = <2188000>;
+				};
+
+				opp-2 {
+					opp-peak-kBps = <3072000>;
+				};
+
+				opp-3 {
+					opp-peak-kBps = <4068000>;
+				};
+
+				opp-4 {
+					opp-peak-kBps = <6220000>;
+				};
+
+				opp-5 {
+					opp-peak-kBps = <7216000>;
+				};
+			};
+		};
+
 		mem_noc: interconnect@d00000 {
 			compatible = "qcom,shikra-mem-noc-core";
 			reg = <0x0 0x00d00000 0x0 0x43080>;