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[103.229.16.4]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-770b5bed428sm5628582b3a.16.2025.08.26.00.02.00 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 26 Aug 2025 00:02:02 -0700 (PDT) From: Jie Gan To: Suzuki K Poulose , Mike Leach , James Clark , Alexander Shishkin , Tingwei Zhang Cc: coresight@lists.linaro.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org Subject: [PATCH v1 2/3] coresight: tpda: add function to configure TPDA_SYNCR register Date: Tue, 26 Aug 2025 15:01:49 +0800 Message-Id: <20250826070150.5603-3-jie.gan@oss.qualcomm.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20250826070150.5603-1-jie.gan@oss.qualcomm.com> References: <20250826070150.5603-1-jie.gan@oss.qualcomm.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwODIzMDAzMyBTYWx0ZWRfX6U3aEd3Lq0MX lTf7u13bx/HrS0g2hc4ijOoWvYUChkSird2Up+Bu+K0RhyyXHykgh7MNngHpyluD993EimykFri 5bJTpCwZIdLoOYFbUzq7zlKcugamwfn/DH3vq7FszFl6OzJEzgiAEiUBZSwBA7xG9xcH+s+0Mb4 8MfgfBonDKk2Hjgzr67nFFgJFw41AmTOA8paTgjap9UufIxaVBqTAhuhqVybKzSkl3obqK8ONSp 2IKoZ0/JDLq7oRXLknMTs03Jo5gfipoPy6oClAiswgOlIEsy+7xt6dIudYcp3/xFxE2mQGAfr+a ApDBGcgxEWA9xCUtD6c2yMVlk7VCKHGZbOn2U0h746gK1fGEpEvjSC00SZpjnC6s1i36bs73EL1 fM3AQPyD X-Proofpoint-GUID: zp93blGefTjX3fdQHiu8PHjalniUIQA2 X-Authority-Analysis: v=2.4 cv=MutS63ae c=1 sm=1 tr=0 ts=68ad5bed cx=c_pps a=rz3CxIlbcmazkYymdCej/Q==:117 a=nuhDOHQX5FNHPW3J6Bj6AA==:17 a=2OwXVqhp2XgA:10 a=EUspDBNiAAAA:8 a=8xtsYS7Ed2DtWhKBhe4A:9 a=bFCP_H2QrGi7Okbo017w:22 X-Proofpoint-ORIG-GUID: zp93blGefTjX3fdQHiu8PHjalniUIQA2 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1099,Hydra:6.1.9,FMLib:17.12.80.40 definitions=2025-08-26_02,2025-08-26_01,2025-03-28_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 impostorscore=0 adultscore=0 spamscore=0 malwarescore=0 suspectscore=0 clxscore=1015 bulkscore=0 priorityscore=1501 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2507300000 definitions=main-2508230033 Content-Type: text/plain; charset="utf-8" From: Tao Zhang The TPDA_SYNCR register defines the frequency at which TPDA generates ASYNC packets, enabling userspace tools to accurately parse each valid packet. Signed-off-by: Tao Zhang Co-developed-by: Jie Gan Signed-off-by: Jie Gan --- drivers/hwtracing/coresight/coresight-tpda.c | 15 +++++++++++++++ drivers/hwtracing/coresight/coresight-tpda.h | 1 + 2 files changed, 16 insertions(+) diff --git a/drivers/hwtracing/coresight/coresight-tpda.c b/drivers/hwtraci= ng/coresight/coresight-tpda.c index cc254d53b8ec..9e623732d1e7 100644 --- a/drivers/hwtracing/coresight/coresight-tpda.c +++ b/drivers/hwtracing/coresight/coresight-tpda.c @@ -189,6 +189,18 @@ static void tpda_enable_pre_port(struct tpda_drvdata *= drvdata) writel_relaxed(0x0, drvdata->base + TPDA_FPID_CR); } =20 +static void tpda_enable_post_port(struct tpda_drvdata *drvdata) +{ + uint32_t val; + + val =3D readl_relaxed(drvdata->base + TPDA_SYNCR); + /* Clear the mode */ + val =3D val & ~TPDA_MODE_CTRL; + /* Program the counter value */ + val =3D val | 0xFFF; + writel_relaxed(val, drvdata->base + TPDA_SYNCR); +} + static int tpda_enable_port(struct tpda_drvdata *drvdata, int port) { u32 val; @@ -227,6 +239,9 @@ static int __tpda_enable(struct tpda_drvdata *drvdata, = int port) tpda_enable_pre_port(drvdata); =20 ret =3D tpda_enable_port(drvdata, port); + if (!drvdata->csdev->refcnt) + tpda_enable_post_port(drvdata); + CS_LOCK(drvdata->base); =20 return ret; diff --git a/drivers/hwtracing/coresight/coresight-tpda.h b/drivers/hwtraci= ng/coresight/coresight-tpda.h index b651372d4c88..00d146960d81 100644 --- a/drivers/hwtracing/coresight/coresight-tpda.h +++ b/drivers/hwtracing/coresight/coresight-tpda.h @@ -9,6 +9,7 @@ #define TPDA_CR (0x000) #define TPDA_Pn_CR(n) (0x004 + (n * 4)) #define TPDA_FPID_CR (0x084) +#define TPDA_SYNCR (0x08C) =20 /* Cross trigger FREQ packets timestamp bit */ #define TPDA_CR_FREQTS BIT(2) --=20 2.34.1