linux-kernel - [PATCH v2 5/5] arm64: dts: qcom: sdm845: Add CPU BWMON

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Message-Id: <20220504081735.26906-6-krzysztof.kozlowski@linaro.org>
Date:   Wed,  4 May 2022 10:17:35 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Georgi Djakov <djakov@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>,
        Viresh Kumar <vireshk@...nel.org>, Nishanth Menon <nm@...com>,
        Stephen Boyd <sboyd@...nel.org>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        linux-arm-msm@...r.kernel.org, linux-pm@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org
Cc:     Thara Gopinath <thara.gopinath@...aro.org>
Subject: [PATCH v2 5/5] arm64: dts: qcom: sdm845: Add CPU BWMON

Add device node for CPU-memory BWMON device (bandwidth monitoring) on
SDM845.

Co-developed-by: Thara Gopinath <thara.gopinath@...aro.org>
Signed-off-by: Thara Gopinath <thara.gopinath@...aro.org>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
---
 arch/arm64/boot/dts/qcom/sdm845.dtsi | 60 ++++++++++++++++++++++++++++
 1 file changed, 60 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sdm845.dtsi b/arch/arm64/boot/dts/qcom/sdm845.dtsi
index 692cf4be4eef..bd4577f0a92f 100644
--- a/arch/arm64/boot/dts/qcom/sdm845.dtsi
+++ b/arch/arm64/boot/dts/qcom/sdm845.dtsi
@@ -2026,6 +2026,66 @@ llcc: system-cache-controller@...0000 {
 			interrupts = <GIC_SPI 582 IRQ_TYPE_LEVEL_HIGH>;
 		};
 
+		pmu@...6400 {
+			compatible = "qcom,sdm845-cpu-bwmon";
+			reg = <0 0x01436400 0 0x600>;
+
+			interrupts = <GIC_SPI 581 IRQ_TYPE_LEVEL_HIGH>;
+
+			interconnects = <&gladiator_noc MASTER_APPSS_PROC 3 &mem_noc SLAVE_EBI1 3>,
+					<&osm_l3 MASTER_OSM_L3_APPS &osm_l3 SLAVE_OSM_L3>;
+			interconnect-names = "ddr", "l3c";
+
+			operating-points-v2 = <&cpu_bwmon_opp_table>;
+
+			cpu_bwmon_opp_table: opp-table {
+				compatible = "operating-points-v2";
+
+				/*
+				 * The interconnect paths bandwidths calculated
+				 * from msm-4.9 downstream kernel:
+				 *  - the gladiator_noc-mem_noc from bandwidth
+				 *    table of qcom,llccbw (property qcom,bw-tbl);
+				 *    bus width: 4 bytes;
+				 *  - the OSM L3 from bandiwdth table of
+				 *    qcom,cpu4-l3lat-mon (qcom,core-dev-table);
+				 *    bus width: 16 bytes;
+				 */
+				opp-0 {
+					opp-peak-kBps = <800000 4800000>;
+					opp-avg-kBps = <800000 4800000>;
+				};
+				opp-1 {
+					opp-peak-kBps = <1804000 9216000>;
+					opp-avg-kBps = <1804000 9216000>;
+				};
+				opp-2 {
+					opp-peak-kBps = <2188000 11980800>;
+					opp-avg-kBps = <2188000 11980800>;
+				};
+				opp-3 {
+					opp-peak-kBps = <3072000 15052800>;
+					opp-avg-kBps = <3072000 15052800>;
+				};
+				opp-4 {
+					opp-peak-kBps = <4068000 19353600>;
+					opp-avg-kBps = <4068000 19353600>;
+				};
+				opp-5 {
+					opp-peak-kBps = <5412000 20889600>;
+					opp-avg-kBps = <5412000 20889600>;
+				};
+				opp-6 {
+					opp-peak-kBps = <6220000 22425600>;
+					opp-avg-kBps = <6220000 22425600>;
+				};
+				opp-7 {
+					opp-peak-kBps = <7216000 25497600>;
+					opp-avg-kBps = <7216000 25497600>;
+				};
+			};
+		};
+
 		pcie0: pci@...0000 {
 			compatible = "qcom,pcie-sdm845";
 			reg = <0 0x01c00000 0 0x2000>,
-- 
2.32.0