From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D8501241663 for ; Thu, 6 Nov 2025 05:20:22 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=205.220.168.131 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762406424; cv=none; b=On6JjnxkgOxvc0NXsqbqfW5Aec8FR2TvFFm1w5tkTPAaoEn0NJ1GghMTz1IYhehEaNn31Nww15yX/mhph9LOu7Oi+WiXZX1LCISQeHJe6wpUezBFqxOY2Xptd3axcx+IIm2cMNc2TmLnbWukQyqg3AIntBPdmOQoBSaxyX64e18= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762406424; c=relaxed/simple; bh=PCRT/VnjscuohG3qd1r/9oEnwYE+hozkOIujPshDmnI=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=ap4aGwtIknOKyTY17gcPD4+v3Bhj5CyAjrgXXVWfGWAio4xNSbMM+6of0UvTjxe/nHwNWjtYjZ7a/dbTUqK73u4BxeUcCc/Kr5zz2PRtlBkUpcKCS0leavO3kpUrN6Y4dzDQNmkHvjE5EX51y0z7pswFJXn4D6xOb/HGzpT9sco= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=oss.qualcomm.com; spf=pass smtp.mailfrom=oss.qualcomm.com; dkim=pass (2048-bit key) header.d=qualcomm.com header.i=@qualcomm.com header.b=WY5U3PG4; dkim=pass (2048-bit key) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com header.b=J7ugUMaq; arc=none smtp.client-ip=205.220.168.131 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=oss.qualcomm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=oss.qualcomm.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=qualcomm.com header.i=@qualcomm.com header.b="WY5U3PG4"; dkim=pass (2048-bit key) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com header.b="J7ugUMaq" Received: from pps.filterd (m0279866.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.11/8.18.1.11) with ESMTP id 5A655skk3217824 for ; Thu, 6 Nov 2025 05:20:22 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=qualcomm.com; h= cc:content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s=qcppdkim1; bh= RbncP33QuByCSLGI1byB0rZspAPVjU3fy2uppZLE2jY=; b=WY5U3PG4eUJLipRu BebhURNIeJ9CDJWrOCxeTHjrsPo5v3vVvjZ5rTe62ecmyJEkBvPfDPSnpDJYWLY3 LtD8YTOqv3vzjXA82IizMEH/BAZXyh9ubpV41rpDKnOv9tbFUaLShk5O0rpAtRvR 8aREZj1pZblM5WYszuAAj7vxoXGSOOoxc47MEptdZZOKj8Lzt8e+9XkdHaRcjoGH DYC2UE6tv6BXeraAQQFkXjQG19VkrUcp6eKEaU2TBqJkPP/NfNuzjKb7ODqRvJgj gspW0qNK4zE+4u/ghe+kkteBNMB/oG7NLhJyGjwK9LdWmMesN78fthJWs3A4KPeW FVkPdQ== Received: from mail-pj1-f72.google.com (mail-pj1-f72.google.com [209.85.216.72]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 4a8n7pg13e-1 (version=TLSv1.3 cipher=TLS_AES_128_GCM_SHA256 bits=128 verify=NOT) for ; Thu, 06 Nov 2025 05:20:22 +0000 (GMT) Received: by mail-pj1-f72.google.com with SMTP id 98e67ed59e1d1-33da1f30fdfso141871a91.3 for ; Wed, 05 Nov 2025 21:20:22 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oss.qualcomm.com; s=google; t=1762406421; x=1763011221; darn=vger.kernel.org; h=content-transfer-encoding:in-reply-to:from:content-language :references:cc:to:subject:user-agent:mime-version:date:message-id :from:to:cc:subject:date:message-id:reply-to; bh=RbncP33QuByCSLGI1byB0rZspAPVjU3fy2uppZLE2jY=; b=J7ugUMaqnjcbYOgib4ounkwiF9EOZR21Ovu7A1SunZYKunHRmVFU8kzJ9TvC1ul64y 3MZyXZ4jJ+sNC4C6a9RqgpyVa9ofUcf4mh2v6EF87X4K8O4xDfIa51K4tY/3KQGSvDQL G9oXc18+PRyoJNRmfzVbyHcIV0ewFt3Rb3WrrjG2AXgOBql3gs/+CLnv2PIIBYqPMPjv 9X4cL3KPEtIC4GV4x8GkFrG8Fx/leatOnMDNlRh9eMBvMa3eODMgEDwH/d2Mp9rn+pj7 zGKuHRzXDfkjrXD5cvD44pCDaX5UUv9ODn+89I6HxytdOh0zXO78jYFqkgj/BDyFCGAK qpSg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1762406421; x=1763011221; h=content-transfer-encoding:in-reply-to:from:content-language :references:cc:to:subject:user-agent:mime-version:date:message-id :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=RbncP33QuByCSLGI1byB0rZspAPVjU3fy2uppZLE2jY=; b=HhtzsmkQwuJCHXANGQ33WItmQquHF5jL2MjXH2LG8PhWyL8tcAipA+OwNY6hVW0d8c X5aouqISa+NC7plCmGVv09TVkYJw4CpyeQyAVr2iCngWK0EQTotPp2Ud/9M8wQ6jbVuS Mgrdy0NMCiPF+GlXm+ND7ppjADKNoUaFgiLYv8uJ7ZKFImYdPQUhNfYLvN5lzlb5Tqwf D0sdLrmZAg0tq9lt/GYbC4hqmZF8+bi4SpjTMQeGeBVyKb8iEC8hcTqJnikr4q/CCWC1 4xc7ptZxWJUBvgAfGskP54uR4yq3qPWzzRy59fA6D7J8JppIz/lF4Hfo/hhRQABJYdst eitQ== X-Forwarded-Encrypted: i=1; AJvYcCX6KKHQfbXvlG3JwVnX9ys+9kHbQUvgpRKL3c3pus0fK7XkvOy2RijQQ8GcxHHi6y7gGzlPTwKs4GxzApk=@vger.kernel.org X-Gm-Message-State: AOJu0Yyu2h+vqR1lf6nSVACtaKU+xy+uY4g/4F3JsDBWq5MxOkDjPUKC 6cngEUdSKiPiiyA9c3fk5dB3Y3ltlCl+GNNDicBs3pLZxAidzUk3VmmG2CRDz6YQpcW1WspAM7Q rj2JDtIeLnykS0M+y72y+/P4CiysAxG+V/Y2XgNvHicQdLoFdTR4TVPDkatGccv/FjvE= X-Gm-Gg: ASbGncu0tkYXMQjyeKqPeznR47XzZorvjv6JBzbarJxl/KaNH9XiPtRUj8nAZsopkO+ jS11dhnjBARLZF4t969AIMovokNEWz8VY6goVkSVuDjSk6v10YqK2qkF0IVkHbQmtGZRrAEXcru 85ytXy+9Kxj9p524EniLN2s+9QEp53cxyUQWFEpD/JdWKZyPW4hAPZFg/XsX/G3Lc6jWlOPpBkW CzOwJz0xjgDIGPx3Jkr8NxbO6uqscxJY+R9QhCm6afMx0Ge5U58dMgQ70MkJsqfxBH0j8TkIjMT dQuY//oVYR/2nJT+1UnrWTqc74wT+i1uVpN89QKqm7T7XKof7arb2ecELJmnOWfGJ5wjAQLOLyS Pj7ZqHrZeT2+tBtpVwT2sm/YepCiUVCqrDWyBX8FCMPloSjfRJpGZI1MuW3+fSR9u X-Received: by 2002:a17:90b:4a0e:b0:33b:b453:c900 with SMTP id 98e67ed59e1d1-341a6dc3ef0mr7716786a91.19.1762406421347; Wed, 05 Nov 2025 21:20:21 -0800 (PST) X-Google-Smtp-Source: AGHT+IEA8v7A+ayync/726jkKTD5KYJxkRhenVh6tscIPPHnasEdHKYvxouPnrmMzhPLa+hczUysXQ== X-Received: by 2002:a17:90b:4a0e:b0:33b:b453:c900 with SMTP id 98e67ed59e1d1-341a6dc3ef0mr7716756a91.19.1762406420807; Wed, 05 Nov 2025 21:20:20 -0800 (PST) Received: from [10.133.33.139] (tpe-colo-wan-fw-bordernet.qualcomm.com. [103.229.16.4]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-341d1347db0sm535859a91.4.2025.11.05.21.20.15 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 05 Nov 2025 21:20:19 -0800 (PST) Message-ID: Date: Thu, 6 Nov 2025 13:20:13 +0800 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v4 0/3] coresight: add static TPDM support To: Suzuki K Poulose , Mike Leach , James Clark , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Tingwei Zhang , Mao Jinlong , Tao Zhang , Alexander Shishkin , Bjorn Andersson , Konrad Dybcio Cc: linux-arm-msm@vger.kernel.org, coresight@lists.linaro.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Konrad Dybcio References: <20251028-add_static_tpdm_support-v4-0-84e21b98e727@oss.qualcomm.com> Content-Language: en-US From: Jie Gan In-Reply-To: <20251028-add_static_tpdm_support-v4-0-84e21b98e727@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Proofpoint-ORIG-GUID: elSnlAPsosxkVo9pz7cHXqfEyDLjLELs X-Proofpoint-GUID: elSnlAPsosxkVo9pz7cHXqfEyDLjLELs X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUxMTA2MDA0MCBTYWx0ZWRfX3kmly8zfosq+ ouWZkeXhqiv2IPeiw4m4NLQYywg64A3tkzFrkkrugNfQpjWJlv8hmFOeeR6ZO2L678wnWDJYmvB 17xNXAlIss7uK79xrJBNjjTbSydKKr+MADs8T5Zjizg768c7O0vaD/0WMJv56O6reCaLFzwe43d 9APHj07Xf2So4Yq0PlLfR02/T+PCpxyyyS0gcDFufwIXZRRpvZHUjtm9ykN0gFA0GOEFQw8PPZV sabeE+sgeflTCwLICOc3xdI4tf1K+L35D+arcl1iaRRBDiK+da+9g3or5x50xkVFytjr37l359F J4cd8/ZZFBvG4GE5f3wNM1/Ib+dnzsJuL8ghZsy5X+mOrdWAKTjwjW9FVu1kcOJndtuPFt8a3d/ oMWiep3JEA9dZJHoNaKKKUvLJ/MeTw== X-Authority-Analysis: v=2.4 cv=ErnfbCcA c=1 sm=1 tr=0 ts=690c3016 cx=c_pps a=RP+M6JBNLl+fLTcSJhASfg==:117 a=nuhDOHQX5FNHPW3J6Bj6AA==:17 a=IkcTkHD0fZMA:10 a=6UeiqGixMTsA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=VwQbUJbxAAAA:8 a=EUspDBNiAAAA:8 a=43WlQIeRwcEhdZomQpkA:9 a=QEXdDO2ut3YA:10 a=iS9zxrgQBfv6-_F4QbHw:22 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.9,FMLib:17.12.100.49 definitions=2025-11-05_09,2025-11-03_03,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 malwarescore=0 clxscore=1015 adultscore=0 impostorscore=0 bulkscore=0 priorityscore=1501 suspectscore=0 spamscore=0 lowpriorityscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2510240001 definitions=main-2511060040 On 10/28/2025 6:11 PM, Jie Gan wrote: > The static TPDM function as a dummy source, however, it is essential > to enable the port connected to the TPDA and configure the element size. > Without this, the TPDA cannot correctly receive trace data from the > static TPDM. Since the static TPDM does not require MMIO mapping to > access its registers, a clock controller is not mandatory for its > operation. > > Meanwhile, a function has been introduced to determine whether the > current csdev is a static TPDM. This check enables the TPDA device > to correctly read the element size and activate its port accordingly. > Otherwise the TPDA cannot receive the trace data from the TPDM device. > Gentle reminder. > Changes in V4: > 1. decouple from tpda driver code. > 2. Introduce a new solution to identify static TPDM. > Link to V3 - https://lore.kernel.org/all/20251013-add-static-tpdm-support-v3-0-a720b73e83db@oss.qualcomm.com/ > > Changes in V3: > 1. rebased on next-20251010 > Link to V2 - https://lore.kernel.org/all/20250911-add_static_tpdm_support-v2-0-608559d36f74@oss.qualcomm.com/ > > Changes in V2: > 1. Remove the dependency. > 2. Collect tags from Rob and Konard for patchset 1 and patchset 3. > Link to V1 - https://lore.kernel.org/all/20250822103008.1029-1-jie.gan@oss.qualcomm.com/ > > Signed-off-by: Jie Gan > --- > Jie Gan (3): > dt-bindings: arm: document the static TPDM compatible > coresight: tpdm: add static tpdm support > arm64: dts: qcom: lemans: enable static TPDM > > .../bindings/arm/qcom,coresight-tpdm.yaml | 23 ++- > arch/arm64/boot/dts/qcom/lemans.dtsi | 105 +++++++++++++ > drivers/hwtracing/coresight/coresight-tpda.c | 7 - > drivers/hwtracing/coresight/coresight-tpdm.c | 174 +++++++++++++++++---- > drivers/hwtracing/coresight/coresight-tpdm.h | 12 ++ > 5 files changed, 279 insertions(+), 42 deletions(-) > --- > base-commit: f7d2388eeec24966fc4d5cf32d706f0514f29ac5 > change-id: 20251028-add_static_tpdm_support-1f62477857e2 > > Best regards,