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Thu, 24 Jul 2025 07:17:40 -0700 (PDT) X-Google-Smtp-Source: AGHT+IGhvtFG0W6tRYiyGDcyMpsBo+LUbFikSwfNcVBQeALnG8xoshy53s7tiH9UcHqZ0iY3/+7/5w== X-Received: by 2002:a05:6a20:734a:b0:231:6ba:881c with SMTP id adf61e73a8af0-23d48fe3d5bmr10681794637.6.1753366660018; Thu, 24 Jul 2025 07:17:40 -0700 (PDT) Received: from [192.168.1.6] ([122.164.87.238]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-761adb7876dsm1830391b3a.6.2025.07.24.07.17.36 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 24 Jul 2025 07:17:39 -0700 (PDT) Message-ID: <807d50c4-5ee7-43d6-beab-7ce220911d41@oss.qualcomm.com> Date: Thu, 24 Jul 2025 19:47:33 +0530 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 v3] arm64: dts: qcom: ipq5424: Describe the 4-wire UART SE To: Dmitry Baryshkov Cc: Bjorn Andersson , Konrad Dybcio , Rob Herring , Krzysztof Kozlowski , Conor Dooley , linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org References: <20250630-ipq5424_hsuart-v3-1-fa0866b12cbc@oss.qualcomm.com> Content-Language: en-US From: Kathiravan Thirumoorthy In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Proofpoint-GUID: 4Qoa_QWpJizRvDjsYuGbqEH7iWQ5D4Fp X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwNzI0MDEwOSBTYWx0ZWRfXz90bhs02ySdN e3Mm6sn6P/ISVAy8XLMUmIDllTv6jG4a9kSEc/qX7ooO4CSZWaqQHWdgjblV8HlkqT9ZYhvPN0j DoanWbAMOfJPDbxIaH5vpX0ZJrzO0UpPWDqC3vDM6MzAzyBBMxVW6XTeL7EIBJuKIjPVMHbofgn sPYP6XRuOV8EEJIWeXFZavA2wLJSwhAN2pUIIQ6Je/ADNjMzpoFZxJeL17xYGs3X3nruQxVPxgf 2CmoU4w0KkbSEcvQrQCrCxVKIqJxrIIod2CbZHXebsD/573JjvOlSgi1noBEsvnIw4gu6qdZ4yd 3wRQyoyMSnS5kgcqm7PdBhsJoInasSXLPUjCZo5bTjtIOvlxmKZdw0fJyN+cfOlYCyPGQVidG64 BI7NeUqVICGHq9BlZCdNPjw2APVRTyQC9Ll6MKRiHVeABDJ/aumo+v3NZIzshObL0uWyLoIR X-Authority-Analysis: v=2.4 cv=E8/Npbdl c=1 sm=1 tr=0 ts=68824090 cx=c_pps a=rz3CxIlbcmazkYymdCej/Q==:117 a=JWbiWFiXhu80OzE02/OSSw==:17 a=IkcTkHD0fZMA:10 a=Wb1JkmetP80A:10 a=Xs_gmOcz2JqXoP2f-ooA:9 a=QEXdDO2ut3YA:10 a=bFCP_H2QrGi7Okbo017w:22 X-Proofpoint-ORIG-GUID: 4Qoa_QWpJizRvDjsYuGbqEH7iWQ5D4Fp 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=2025-07-24_02,2025-07-24_01,2025-03-28_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 malwarescore=0 spamscore=0 bulkscore=0 lowpriorityscore=0 priorityscore=1501 adultscore=0 suspectscore=0 clxscore=1015 phishscore=0 mlxlogscore=580 mlxscore=0 classifier=spam authscore=0 authtc=n/a authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2505280000 definitions=main-2507240109 On 7/23/2025 5:00 PM, Dmitry Baryshkov wrote: > On Mon, Jun 30, 2025 at 02:20:15PM +0530, Kathiravan Thirumoorthy wrote: >> QUPv3 in IPQ5424 consists of six Serial Engines (SEs). Describe the >> first SE, which supports a 4-wire UART configuration suitable for >> applications such as HS-UART. >> >> Note that the required initialization for this SE is not handled by the >> bootloader. Therefore, add the SE node in the device tree but keep it >> disabled. Enable it once Linux gains support for configuring the SE, >> allowing to use in relevant RDPs. > What about documenting it as status = "reserved" + comment and then > enabling it once QUP patches land? Sure. Let me update it in the next spin.