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[103.229.16.4]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2a3e3c48c2bsm37091885ad.26.2026.01.06.21.33.27 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 06 Jan 2026 21:33:30 -0800 (PST) Message-ID: <945e0063-23eb-4111-9aed-36fce77a0afa@oss.qualcomm.com> Date: Wed, 7 Jan 2026 13:33:24 +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 v9 7/7] qcom-tgu: Add reset node to initialize To: Suzuki K Poulose , andersson@kernel.org, alexander.shishkin@linux.intel.com, mike.leach@linaro.org, james.clark@arm.com, krzk+dt@kernel.org, conor+dt@kernel.org Cc: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org, coresight@lists.linaro.org, devicetree@vger.kernel.org, gregkh@linuxfoundation.org References: <20251219065902.2296896-1-songwei.chai@oss.qualcomm.com> <20251219065902.2296896-8-songwei.chai@oss.qualcomm.com> <7cfbcc2e-b6ca-47cf-83fe-1c61df40885b@arm.com> Content-Language: en-US From: Songwei Chai In-Reply-To: <7cfbcc2e-b6ca-47cf-83fe-1c61df40885b@arm.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Proofpoint-ORIG-GUID: iroTOnP2h7xVR3WqB0UbkM06GBl2IIU2 X-Proofpoint-GUID: iroTOnP2h7xVR3WqB0UbkM06GBl2IIU2 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMTA3MDA0MiBTYWx0ZWRfXxQWHKnjL1B3E bzWmAP6V41cWibHTlRUp/mJ1POwixvcxZoCSPIZttAoANI/RMd8TB99hvoJgC9wzaEw1mP2sV+z zMAv5Z9AuekW147cfeNU0JP528CzurxQwV6bps6UOe9umKbYxswKWtGqJGWmGhmEAUhtvT0ElfZ Upw1CKbavxnFszLhPYHEX10cMTfJhYksELJ+hGQCRMmbWqqhPjSClqFoM+dvq5eegVbsfjW5vzp 7ljj/Shcn3WnGFOfEeOiDrFnv2c+GaKTM12EVe84XU+qbUjCzumvfhUYgo6mG1S7IwCAa5sq1+t JYuSJqkOjkDqwAmOJJlzvCvrnCQ7iZWWRefVJBQY2dZwwWyyOxHdVeMfqDV2LlUnlX/b7vcvV6N wNqxs1HHhDHGFS3o+6qtmpWTfJYMUPxKEeGkQESLpgl8onSLUxjr5IpWJv5VKA4OJexGiHd7zVe Cd9VkEkMejvc8keONdQ== X-Authority-Analysis: v=2.4 cv=MtdfKmae c=1 sm=1 tr=0 ts=695df02c cx=c_pps a=vVfyC5vLCtgYJKYeQD43oA==:117 a=nuhDOHQX5FNHPW3J6Bj6AA==:17 a=IkcTkHD0fZMA:10 a=vUbySO9Y5rIA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=EUspDBNiAAAA:8 a=aO9wjV38XZb3NMbED0oA:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 a=rl5im9kqc5Lf4LNbBjHf: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=2026-01-06_03,2026-01-06_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 suspectscore=0 phishscore=0 adultscore=0 bulkscore=0 priorityscore=1501 clxscore=1015 impostorscore=0 spamscore=0 lowpriorityscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2512120000 definitions=main-2601070042 On 1/6/2026 6:16 PM, Suzuki K Poulose wrote: > On 19/12/2025 06:59, Songwei Chai wrote: >> Add reset node to initialize the value of >> priority/condition_decode/condition_select/timer/counter nodes. >> >> Signed-off-by: Songwei Chai >> --- >>   .../ABI/testing/sysfs-bus-amba-devices-tgu    |  7 ++ >>   drivers/hwtracing/qcom/tgu.c                  | 74 +++++++++++++++++++ >>   2 files changed, 81 insertions(+) >> >> diff --git a/Documentation/ABI/testing/sysfs-bus-amba-devices-tgu b/ >> Documentation/ABI/testing/sysfs-bus-amba-devices-tgu >> index 010eade0a1c5..0733b3e07b45 100644 >> --- a/Documentation/ABI/testing/sysfs-bus-amba-devices-tgu >> +++ b/Documentation/ABI/testing/sysfs-bus-amba-devices-tgu >> @@ -42,3 +42,10 @@ KernelVersion    6.19 >>   Contact:    Jinlong Mao , Songwei Chai >> >>   Description: >>           (RW) Set/Get the counter value with specific step for TGU. >> + >> +What:        /sys/bus/amba/devices//reset_tgu >> +Date:        December 2025 >> +KernelVersion    6.19 >> +Contact:    Jinlong Mao , Songwei Chai >> >> +Description: >> +        (Write) Write 1 to reset the dataset for TGU. >> diff --git a/drivers/hwtracing/qcom/tgu.c b/drivers/hwtracing/qcom/tgu.c >> index d4210869556e..5a8c6af9b719 100644 >> --- a/drivers/hwtracing/qcom/tgu.c >> +++ b/drivers/hwtracing/qcom/tgu.c >> @@ -425,8 +425,82 @@ static ssize_t enable_tgu_store(struct device *dev, > > >> + >> +    dev_dbg(dev, "Coresight-TGU reset complete\n"); > > Qualcomm-TGU ?Exactly! Thanks for reminder.> > Suzuki