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Message-ID: References: <20240705090049.1656986-1-quic_jiegan@quicinc.com> <20240705090049.1656986-3-quic_jiegan@quicinc.com> <208b3861-6898-4506-9152-c9d770ef1555@arm.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <208b3861-6898-4506-9152-c9d770ef1555@arm.com> X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01b.na.qualcomm.com (10.46.141.250) To nalasex01c.na.qualcomm.com (10.47.97.35) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: 9qnswLDy7VUKYSIFYm9bovppNP874OkJ X-Proofpoint-ORIG-GUID: 9qnswLDy7VUKYSIFYm9bovppNP874OkJ X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.680,FMLib:17.12.28.16 definitions=2024-07-08_05,2024-07-05_01,2024-05-17_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 adultscore=1 suspectscore=0 impostorscore=0 mlxlogscore=999 mlxscore=0 bulkscore=0 priorityscore=1501 malwarescore=0 lowpriorityscore=0 phishscore=0 spamscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2406140001 definitions=main-2407080079 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240708_031047_641728_6E387C4E X-CRM114-Status: GOOD ( 22.05 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Mon, Jul 08, 2024 at 10:41:55AM +0100, Suzuki K Poulose wrote: > On 05/07/2024 10:00, Jie Gan wrote: > > Add binding document for Coresight Control Unit device. > > nit: This is again too generic ? corsight-tmc-control-unit ? After all > thats what it is and not a *generic* coresight control unit ? > coresight-tmc-control-unit is much better. We will check it. > > > > Signed-off-by: Jie Gan > > --- > > .../bindings/arm/qcom,coresight-ccu.yaml | 87 +++++++++++++++++++ > > 1 file changed, 87 insertions(+) > > create mode 100644 Documentation/devicetree/bindings/arm/qcom,coresight-ccu.yaml > > > > diff --git a/Documentation/devicetree/bindings/arm/qcom,coresight-ccu.yaml b/Documentation/devicetree/bindings/arm/qcom,coresight-ccu.yaml > > new file mode 100644 > > index 000000000000..9bb8ced393a7 > > --- /dev/null > > +++ b/Documentation/devicetree/bindings/arm/qcom,coresight-ccu.yaml > > @@ -0,0 +1,87 @@ > > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) > > +%YAML 1.2 > > +--- > > +$id: http://devicetree.org/schemas/arm/qcom,coresight-ccu.yaml# > > +$schema: http://devicetree.org/meta-schemas/core.yaml# > > + > > +title: CoreSight Control Unit > > + > > +maintainers: > > + - Yuanfang Zhang > > + - Mao Jinlong > > + - Jie Gan > > + > > +description: > > + The Coresight Control unit controls various Coresight behaviors. > > + Used to enable/disable ETR’s data filter function based on trace ID. > > + > > +properties: > > + compatible: > > + const: qcom,coresight-ccu > > + > > + reg: > > + maxItems: 1 > > + > > + clocks: > > + maxItems: 1 > > + > > + clock-names: > > + items: > > + - const: apb_pclk > > + > > + reg-names: > > + items: > > + - const: ccu-base > > + > > + in-ports: > > + $ref: /schemas/graph.yaml#/properties/ports > > + > > + unevaluatedProperties: > > + patternProperties: > > + '^port(@[0-7])?$': > > + description: Input connections from CoreSight Trace bus > > + $ref: /schemas/graph.yaml#/properties/port > > + > > + properties: > > + qcom,ccu-atid-offset: > > Why do we need this atid offset ? Couldn't this be mapped to the "port" > number ? > > e.g, input-port 0 on CCU => Offset x > input-port 1 on CCU => (Offset x + Size of 1 region) If the first ATID offset remains constant, it appears to be feasible. We will consider the possibility of this solution. > > I believe I mentioned this in the previous posting too ? Yes, you mentioned before. I moved it from TMC filed to CCU filed. > > Suzuki >