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[144.49.247.13]) by smtp-relay.gmail.com with ESMTPS id 98e67ed59e1d1-3ae406dc8fbsm495780a91.1.2026.10.26.14.12.02 for (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Mon, 26 Oct 2026 14:12:03 -0700 (PDT) X-Relaying-Domain: broadcom.com X-CFilter-Loop: Reflected Received: by mail-dl1-f70.google.com with SMTP id a92af1059eb24-151dcfb1569so170870c88.0 for ; Mon, 26 Oct 2026 14:12:02 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=broadcom.com; s=google; t=1793049121; x=1793653921; darn=vger.kernel.org; h=content-transfer-encoding:content-type:mime-version:references :in-reply-to:message-id:date:subject:cc:to:from:from:to:cc:subject :date:message-id:reply-to:content-type; bh=C6OnP1vGWmb9YnZS8P9AwgUEc+BdAnjPfL2XGArdBN4=; b=NnysnYU79YnMhg6jBSRtE+Fl4SdFXflwUjWH0sCUcG7gUl7ebUhnf3ZwNUCXCAF9VP jxtfuO5z99UZUwaeAM7SVNyvAPkFb8Q1uHbiSN4Gxl44r+eZz0fD3E+5EBEjPK5eVgOA rT+ZXQTw6PMvAANqPbelwSi4jlqjcLxNRVa+g= X-Received: by 2002:a05:701b:42d1:20b0:158:b944:b15 with SMTP id a92af1059eb24-1a3c6150260mr1039966c88.22.1793049121450; Mon, 26 Oct 2026 14:12:01 -0700 (PDT) X-Received: by 2002:a05:701b:42d1:20b0:158:b944:b15 with SMTP id a92af1059eb24-1a3c6150260mr1039903c88.22.1793049120586; Mon, 26 Oct 2026 14:12:00 -0700 (PDT) Received: from fainelli-desktop.igp.broadcom.net ([192.19.223.252]) by smtp.gmail.com with ESMTPSA id a92af1059eb24-198a0f81ea9sm31915678c88.11.2026.10.26.14.11.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 26 Oct 2026 14:11:59 -0700 (PDT) From: Florian Fainelli To: linux-kernel@vger.kernel.org Cc: Florian Fainelli , Hauke Mehrtens , =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= , Broadcom internal kernel review list , Jonathan Corbet , Shuah Khan , Randy Dunlap , Will Deacon , Mark Rutland , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Besar Wicaksono , Ilkka Koskinen , linux-arm-kernel@lists.infradead.org (moderated list:BROADCOM BCM5301X ARM ARCHITECTURE), linux-doc@vger.kernel.org (open list:DOCUMENTATION), linux-perf-users@vger.kernel.org (open list:ARM PMU PROFILING AND DEBUGGING), devicetree@vger.kernel.org (open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS) Subject: [PATCH 1/3] dt-bindings: perf: Describe the Broadcom BCM5301X AXI PMU Date: Mon, 26 Oct 2026 14:11:49 -0700 Message-ID: <20261026211151.3212237-2-florian.fainelli@broadcom.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20261026211151.3212237-1-florian.fainelli@broadcom.com> References: <20261026211151.3212237-1-florian.fainelli@broadcom.com> X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-DetectorID-Processed: b00c1d49-9d2e-4205-b15f-d015386d3d5e Describe one APB register window per AXI Trace Module. The counters are have no overflow IRQ. Signed-off-by: Florian Fainelli --- .../bindings/perf/brcm,bcm5301x-axi-pmu.yaml | 43 +++++++++++++++++++ MAINTAINERS | 1 + 2 files changed, 44 insertions(+) create mode 100644 Documentation/devicetree/bindings/perf/brcm,bcm5301x-axi-pmu.yaml diff --git a/Documentation/devicetree/bindings/perf/brcm,bcm5301x-axi-pmu.yaml b/Documentation/devicetree/bindings/perf/brcm,bcm5301x-axi-pmu.yaml new file mode 100644 index 000000000000..686b20d4cd29 --- /dev/null +++ b/Documentation/devicetree/bindings/perf/brcm,bcm5301x-axi-pmu.yaml @@ -0,0 +1,43 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/perf/brcm,bcm5301x-axi-pmu.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Broadcom BCM5301X AXI Trace Module performance monitor + +maintainers: + - Florian Fainelli + +description: | + The BCM5301X ARM subsystem contains three AXI Trace Modules, monitoring the + two PL310 AXI master interfaces and the Accelerator Coherency Port (ACP). + Each module has its own APB register window and fixed performance counters + for commands, data beats, channel activity and stalls, latency, and cycles + with outstanding commands. Counters support local start, stop, and clear + commands. No counter overflow interrupt is provided. + + Each node describes one module. The separate ATB trace output and its + CoreSight connections are outside the scope of this binding. This block + is distinct from the BCM2835 family AXI bus-watcher performance monitor. + +properties: + compatible: + const: brcm,bcm5301x-axi-pmu + + reg: + maxItems: 1 + description: APB register window of one AXI Trace Module. + +required: + - compatible + - reg + +additionalProperties: false + +examples: + - | + pmu@19003000 { + compatible = "brcm,bcm5301x-axi-pmu"; + reg = <0x19003000 0x1000>; + }; diff --git a/MAINTAINERS b/MAINTAINERS index f53047aa8d3c..b97f22107fbf 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -5220,6 +5220,7 @@ M: Rafał Miłecki R: Broadcom internal kernel review list L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers) S: Maintained +F: Documentation/devicetree/bindings/perf/brcm,bcm5301x-axi-pmu.yaml F: arch/arm/boot/dts/broadcom/bcm-ns.dtsi F: arch/arm/boot/dts/broadcom/bcm470* F: arch/arm/boot/dts/broadcom/bcm5301* -- 2.53.0