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Mon, 06 Jan 2025 05:36:21 +0000 (GMT) Received: from nasanex01b.na.qualcomm.com (nasanex01b.na.qualcomm.com [10.46.141.250]) by NASANPPMTA02.qualcomm.com (8.18.1.2/8.18.1.2) with ESMTPS id 5065aK3L027206 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 6 Jan 2025 05:36:20 GMT Received: from [10.151.37.100] (10.80.80.8) by nasanex01b.na.qualcomm.com (10.46.141.250) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.9; Sun, 5 Jan 2025 21:36:16 -0800 Message-ID: <2ae1d7f9-63da-47fd-8c39-4a87e2ce97c8@quicinc.com> Date: Mon, 6 Jan 2025 11:06:21 +0530 Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH V2 1/2] dt-bindings: mailbox: Document qcom,tmel-qmp To: Krzysztof Kozlowski CC: , , , , , , , , , , References: <20241231054900.2144961-1-quic_srichara@quicinc.com> <20241231054900.2144961-2-quic_srichara@quicinc.com> Content-Language: en-US From: Sricharan Ramabadhran In-Reply-To: Content-Type: text/plain; charset="UTF-8"; format=flowed Content-Transfer-Encoding: 7bit X-ClientProxiedBy: nasanex01b.na.qualcomm.com (10.46.141.250) To nasanex01b.na.qualcomm.com (10.46.141.250) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: Iz6-HMa5AwKoRJNeQzl9HBoMuxinFgRM X-Proofpoint-ORIG-GUID: Iz6-HMa5AwKoRJNeQzl9HBoMuxinFgRM X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.680,FMLib:17.12.60.29 definitions=2024-09-06_09,2024-09-06_01,2024-09-02_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 adultscore=0 suspectscore=0 impostorscore=0 mlxlogscore=872 malwarescore=0 phishscore=0 mlxscore=0 priorityscore=1501 lowpriorityscore=0 spamscore=0 bulkscore=0 clxscore=1015 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2411120000 definitions=main-2501060048 On 1/4/2025 12:13 AM, Krzysztof Kozlowski wrote: > On 03/01/2025 19:34, Sricharan Ramabadhran wrote: >>>> +description: >>>> + TMEL SS provides different kinds of services like secureboot, remote image >>>> + authentication, key management, crypto, OEM provisioning etc. This patch adds >>>> + support for remote image authentication. Support for rest of the services can >>>> + be added. >>>> + >>>> + The QMP mailbox is the primary means of communication between TMEL SS and >>>> + other subsystem on the SoC. A dedicated pair of inbound and outbound mailboxes >>>> + is implemented for each subsystem/external execution environment which needs to >>>> + communicate with TMEL for security services. The inbound mailboxes are used to >>>> + send IPC requests to TMEL, which are then processed by TMEL firmware and >>>> + accordingly the responses are sent to the requestor via outbound mailboxes. >>>> + >>>> +properties: >>>> + compatible: >>>> + items: >>>> + - enum: >>>> + - qcom,ipq5424-tmel-qmp >>> >>> >>> Why qmp? Can TMEL on IPQ5424 be anything else? Can TMEL be SMEM or using >>> any other remoteproc? >>> >> TMEL on IPQ5424 uses only QMP protocol for communication. > > > Then keep just "tmel". It completely defines this device. ok. Regards, Sricharan