From patchwork Mon Jul 4 12:17:27 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Krzysztof Kozlowski X-Patchwork-Id: 12905248 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id A6D14CCA488 for ; Mon, 4 Jul 2022 12:18:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234477AbiGDMS0 (ORCPT ); Mon, 4 Jul 2022 08:18:26 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53638 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234791AbiGDMR5 (ORCPT ); Mon, 4 Jul 2022 08:17:57 -0400 Received: from mail-lj1-x235.google.com (mail-lj1-x235.google.com [IPv6:2a00:1450:4864:20::235]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4ECE611A3C for ; Mon, 4 Jul 2022 05:17:37 -0700 (PDT) Received: by mail-lj1-x235.google.com with SMTP id n15so10841146ljg.8 for ; Mon, 04 Jul 2022 05:17:37 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=E72BT4aNpnFV2BZE9vt/gl4FI2kRt+wv25cQOsjsaiA=; b=vZATEleU1tK5+GnmaLfZLI1wHAQdCQGe8k3gJnFuIuvAzPLMwG8RNkqB3LdUbsthA1 7TJd9035s8ygKYSnxxhtMo/3vFp4CUT963J6DQoXWuLNKN4MVVlVCT4coFGj6tmS9Bw4 bA7CBcpfUnVkEW7mTX6nxzBkknzOpWQjuKu0ADIx/TXFqbkCcmiLG4hTdYLoC8V8heej xa3Fk/K1uRsp3sq8A7W9WE7/UMfMgbZ4VANgHSnXwuCxZfu/jNTHFZVoO7O2OQG87WzC +j6ZFUbRspbWdi+mdKRP7lV4TmHmP5qimCy2gmbSEVz9GvwolxL7BQEoavKvPLBS7jaI arWA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=E72BT4aNpnFV2BZE9vt/gl4FI2kRt+wv25cQOsjsaiA=; b=5sMXAmbhi0JJC6D17dFywkNEqMaElbMcuPXGmZQqKMhNYiFE6EM5hLSFjmnEueF9tq TYbqiJgoeY5a3RYxkKkwxaneMdxsvHUV9QcQF1pRvk9Oe9nhg+UD91YuBvAljN0oXcnx +gMyMkwXnZdX7wZ1KD/NWY9EJ/ppixUKCErvewXOdpeOB/1VZD9qSUFbt+PPZsXaq50a 2DfSRUY5li7wSR8ugTYacI/gbjTKMRaF740wkX/bFxKg9jkSawaPo3wYE93jfndF5lko M3z86cwJOgJ9ELhRCkYYL5F6bao2Js9gU402qnOrJ57hJ9XRN9tvtzBErjc9wHiCIEqL sqgQ== X-Gm-Message-State: AJIora8je0e5bJkzjDzK4ud2g1cRm/nRWdYaC0gLhDXydKFHUxhM/z+7 PqIOUGndwVXlxydW34/LhbgfJg== X-Google-Smtp-Source: AGRyM1scdc7HyyC6fMT6oxB3Pd+CtlaRtAXxDDLj1P8rRMOLP1fQE5nEGWSaq3GN9RQTqfFjiTp/yA== X-Received: by 2002:a2e:9f12:0:b0:25b:ad89:80e8 with SMTP id u18-20020a2e9f12000000b0025bad8980e8mr15202053ljk.145.1656937055651; Mon, 04 Jul 2022 05:17:35 -0700 (PDT) Received: from krzk-bin.home ([84.20.121.239]) by smtp.gmail.com with ESMTPSA id u11-20020a05651220cb00b0047faa01edd9sm5102149lfr.229.2022.07.04.05.17.34 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 04 Jul 2022 05:17:35 -0700 (PDT) From: Krzysztof Kozlowski To: Krzysztof Kozlowski , Andy Gross , Bjorn Andersson , Georgi Djakov , Rob Herring , Catalin Marinas , Will Deacon , linux-arm-msm@vger.kernel.org, linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Cc: Rajendra Nayak , Rob Herring Subject: [PATCH v8 1/4] dt-bindings: interconnect: qcom,msm8998-cpu-bwmon: add BWMON device Date: Mon, 4 Jul 2022 14:17:27 +0200 Message-Id: <20220704121730.127925-2-krzysztof.kozlowski@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220704121730.127925-1-krzysztof.kozlowski@linaro.org> References: <20220704121730.127925-1-krzysztof.kozlowski@linaro.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org Add bindings for the Qualcomm Bandwidth Monitor device providing performance data on interconnects. The bindings describe only BWMON CPU (version 4), e.g. the instance which appeared for the first on Qualcomm MSM8998 SoC and is also used on SDM845. This BWMON device sits between CPU and Last Level Cache Controller. Signed-off-by: Krzysztof Kozlowski Reviewed-by: Rob Herring Acked-by: Georgi Djakov --- .../interconnect/qcom,msm8998-bwmon.yaml | 86 +++++++++++++++++++ 1 file changed, 86 insertions(+) create mode 100644 Documentation/devicetree/bindings/interconnect/qcom,msm8998-bwmon.yaml diff --git a/Documentation/devicetree/bindings/interconnect/qcom,msm8998-bwmon.yaml b/Documentation/devicetree/bindings/interconnect/qcom,msm8998-bwmon.yaml new file mode 100644 index 000000000000..c2e697f6e6cf --- /dev/null +++ b/Documentation/devicetree/bindings/interconnect/qcom,msm8998-bwmon.yaml @@ -0,0 +1,86 @@ +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/interconnect/qcom,msm8998-bwmon.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Qualcomm Interconnect Bandwidth Monitor + +maintainers: + - Krzysztof Kozlowski + +description: | + Bandwidth Monitor measures current throughput on buses between various NoC + fabrics and provides information when it crosses configured thresholds. + + Certain SoCs might have more than one Bandwidth Monitors, for example on SDM845:: + - Measuring the bandwidth between CPUs and Last Level Cache Controller - + called just BWMON, + - Measuring the bandwidth between Last Level Cache Controller and memory + (DDR) - called LLCC BWMON. + +properties: + compatible: + oneOf: + - items: + - enum: + - qcom,sdm845-bwmon + - const: qcom,msm8998-bwmon + - const: qcom,msm8998-bwmon # BWMON v4 + + interconnects: + maxItems: 1 + + interrupts: + maxItems: 1 + + operating-points-v2: true + opp-table: true + + reg: + # BWMON v4 (currently described) and BWMON v5 use one register address + # space. BWMON v2 uses two register spaces - not yet described. + maxItems: 1 + +required: + - compatible + - interconnects + - interrupts + - operating-points-v2 + - opp-table + - reg + +additionalProperties: false + +examples: + - | + #include + #include + + pmu@1436400 { + compatible = "qcom,sdm845-bwmon", "qcom,msm8998-bwmon"; + reg = <0x01436400 0x600>; + interrupts = ; + interconnects = <&gladiator_noc MASTER_APPSS_PROC 3 &mem_noc SLAVE_LLCC 3>; + + operating-points-v2 = <&cpu_bwmon_opp_table>; + + cpu_bwmon_opp_table: opp-table { + compatible = "operating-points-v2"; + opp-0 { + opp-peak-kBps = <4800000>; + }; + opp-1 { + opp-peak-kBps = <9216000>; + }; + opp-2 { + opp-peak-kBps = <15052800>; + }; + opp-3 { + opp-peak-kBps = <20889600>; + }; + opp-4 { + opp-peak-kBps = <25497600>; + }; + }; + };