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[103.229.16.4]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2a3e3cc8920sm184010105ad.85.2026.01.12.17.45.35 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 12 Jan 2026 17:45:38 -0800 (PST) Message-ID: <8132340f-6ca3-402a-b07f-6142305c00d3@oss.qualcomm.com> Date: Tue, 13 Jan 2026 09:45:33 +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 v2 4/4] arm64: dts: qcom: Add base PURWA-IOT-EVK board To: Dmitry Baryshkov Cc: Konrad Dybcio , andersson@kernel.org, konradybcio@kernel.org, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, krzysztof.kozlowski@oss.qualcomm.com References: <20260109-purwa-v2-0-f39ee10684cb@oss.qualcomm.com> <20260109080000.606603-4-yijie.yang@oss.qualcomm.com> <6e8e6583-033f-439e-bd92-b24fe432fb96@oss.qualcomm.com> <3959a318-aca3-43e2-a431-4a9ae40f911f@oss.qualcomm.com> Content-Language: en-US From: Yijie Yang In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Proofpoint-GUID: GMkJtXuC0HkOnpFXfdvB9P2Vdj2MgfQ3 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMTEzMDAxMyBTYWx0ZWRfX/6ndl/l9FS/h 78C7ulEUh15ehCa4peumT2yVgEHZME9ADbh1gylhQdBEU4rvxIloJifUkgYa9dTUGf5Usx1uGyr N9mf//9tbvGkG/3O7r6P/1jgtP2q0TabPDGJajH1ifpJlfAf5EYRNtYc7DmJvB+HiawivnEw7EE hC2XM5ADajdmUcU5AD4Y05vrbiK9UNZPvZwsvlgouLaad/vsR0LbD36tF6Kz6PLb6AdvGYIJA4S JU3i+H0KvPW6cDXS5bxtqKorY09IRSIxYakcjMp6cPS5QMzGLNI5fBdxhEdvu2/FjEE9wkYu7Ot h1oOrF9I/U9FrF0uD0+GrpW4zAE7kGVnxXyv8qZaKEFOdU2ZisRA0ACVsl3B/uSUpfENr3+tBdB ZloiqLn3iJ7yWAukMvUmg4dmBnWXG1NfLCUehZaFcId/7awEPQ+QAaedyM9nFDRx5JYJk90Clxo 3z619IjNcM54bc+F4kA== X-Proofpoint-ORIG-GUID: GMkJtXuC0HkOnpFXfdvB9P2Vdj2MgfQ3 X-Authority-Analysis: v=2.4 cv=C/XkCAP+ c=1 sm=1 tr=0 ts=6965a3c4 cx=c_pps a=MTSHoo12Qbhz2p7MsH1ifg==:117 a=nuhDOHQX5FNHPW3J6Bj6AA==:17 a=IkcTkHD0fZMA:10 a=vUbySO9Y5rIA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=EUspDBNiAAAA:8 a=JCu9_ZYDNiP3dRRzww0A:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 a=GvdueXVYPmCkWapjIL-Q: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=2026-01-12_07,2026-01-09_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 malwarescore=0 spamscore=0 suspectscore=0 bulkscore=0 adultscore=0 lowpriorityscore=0 priorityscore=1501 phishscore=0 impostorscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2512120000 definitions=main-2601130013 On 1/12/2026 2:01 PM, Dmitry Baryshkov wrote: > On Mon, 12 Jan 2026 at 07:51, Yijie Yang wrote: >> >> >> >> On 1/12/2026 1:00 PM, Dmitry Baryshkov wrote: >>> On Mon, Jan 12, 2026 at 11:12:09AM +0800, Yijie Yang wrote: >>>> >>>> >>>> On 1/9/2026 7:29 PM, Konrad Dybcio wrote: >>>>> On 1/9/26 8:59 AM, YijieYang wrote: >>>>>> From: Yijie Yang >>>>>> >>>>>> The PURWA-IOT-EVK is an evaluation platform for IoT products, composed of >>>>>> the Purwa IoT SoM and a carrier board. Together, they form a complete >>>>>> embedded system capable of booting to UART. >>>>> >>>>> [...] >>>>> >>>>>> - backlight: backlight { >>>>>> - compatible = "pwm-backlight"; >>>>>> - pwms = <&pmk8550_pwm 0 5000000>; >>>>>> - enable-gpios = <&pmc8380_3_gpios 4 GPIO_ACTIVE_HIGH>; >>>>>> - power-supply = <&vreg_edp_bl>; >>>>>> - >>>>>> - pinctrl-0 = <&edp_bl_en>, <&edp_bl_pwm>; >>>>>> - pinctrl-names = "default"; >>>>>> - }; >>>>> >>>>> Is the backlight infra different on the Purwa IoT EVK? >>>> >>>> As you can see, this Purwa file was copied from the latest >>>> hamoa-iot-evk.dts. However, not all nodes have been verified on Purwa. >>>> Therefore, I need to retain only the functions that work correctly and keep >>>> them aligned with the nodes from my initial version. The deleted nodes will >>>> be updated later by the respective authors from different technical areas. >>> >>> Please, only delete nodes which are not present on the Purwa IoT EVK. >> >> This isn’t a deletion—it’s just not ready yet. Why do we need to include >> all the nodes like a mature Hamoa platform in the initial push? > > Purwa seems to be mature enough. What exactly can't be enabled at this moment? > There were some errors during boot when those nodes were added in my previous test. Anyway, I’ll fix the issues and add them all. -- Best Regards, Yijie