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Tue, 30 Jun 2026 07:56:42 -0700 (PDT) X-Received: by 2002:a05:6a21:687:b0:3bd:187e:2de with SMTP id adf61e73a8af0-3bfdc359071mr646883637.25.1782831402423; Tue, 30 Jun 2026 07:56:42 -0700 (PDT) Received: from [192.168.1.6] ([171.76.81.78]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-c9bc02082ebsm1824121a12.26.2026.06.30.07.56.38 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 30 Jun 2026 07:56:41 -0700 (PDT) Message-ID: <68dc89e8-2c91-497f-a665-4a7a8ad2bc76@oss.qualcomm.com> Date: Tue, 30 Jun 2026 20:26:37 +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 1/2] dt-bindings: embedded-controller: qcom,hamoa-crd-ec: Add Purwa IOT EVK To: Krzysztof Kozlowski Cc: Sibi Sankar , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Bjorn Andersson , Konrad Dybcio , linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org References: <20260629-ec_support_for_purwa_evk-v1-0-e082b70138d6@oss.qualcomm.com> <20260629-ec_support_for_purwa_evk-v1-1-e082b70138d6@oss.qualcomm.com> <20260630-unstoppable-phoenix-of-dew-9f0bd5@quoll> Content-Language: en-US From: Anvesh Jain P In-Reply-To: <20260630-unstoppable-phoenix-of-dew-9f0bd5@quoll> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Proofpoint-GUID: YjOypWAIONrjbJWA9SD9CEGpXvaYgB_L X-Authority-Analysis: v=2.4 cv=KqJ9H2WN c=1 sm=1 tr=0 ts=6a43d92b cx=c_pps a=Oh5Dbbf/trHjhBongsHeRQ==:117 a=Tlw+mRs2SjLwfDc/NrL+bQ==:17 a=IkcTkHD0fZMA:10 a=FelO9ux0wxsA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=3WHJM1ZQz_JShphwDgj5:22 a=QOAcj8qZypVd95KNxhoA:9 a=QEXdDO2ut3YA:10 a=_Vgx9l1VpLgwpw_dHYaR:22 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNjMwMDE0MCBTYWx0ZWRfX+cLMK3M3plyE blw4HmXehmxOPYHP6BvjpmTN0MMxnRJFf5NlNtAEdqpNV6wT4k9Gj1Ujw20cfrDNvLmPXAquZRD 0zs9wtDcAOfXre4wIt3U1QHWCzOdMBmPe+3d5yTKLei5MRJ97xu6SUy/mmkXAU4T/zehHo/j4X8 4P+YXO+zYBfuv6tWEKCE0DnCJopBK4ZpU12x1SV6MP/pDyZrUf101OtqgWtxRb888hFuiBcgHr+ tOzHuGvHL8lPWCsn2WMgBpLyBRM1qDHKRJO+HT4zealWUEULKWa10gO8J3pxaUNWrO91M7QYewc 9aP+0o7LBMevZ2eRnpUIK7oIiUxvQUssk3VrbnJgzXOsQ31JM0Xsbhv361j1+dP5Skj29LbUYgV bEzoHGHfhdX1+juCPAkzRXldOS73DHcHMqVFVQX62Uy3yyZXyBJimnft5Vvoy0ktuvbkAtTGOe6 Xr1TCZtaEEHHRSybdEg== X-Proofpoint-ORIG-GUID: YjOypWAIONrjbJWA9SD9CEGpXvaYgB_L X-Proofpoint-Spam-Info: AW1haW4tMjYwNjMwMDE0MCBTYWx0ZWRfX++TGCOu64lu3 EQVLYgk6ad8TqOsmFluka7l6147K82Tk7Ksmjl0esK4R8IOnw+u/Ku1Y6Vh+ECxGKjSpgs7KVjt mg4i0Eu1peI2JTIxlknCklR1+hnBvVk= X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.125,FMLib:17.12.100.49 definitions=2026-06-30_04,2026-06-26_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 adultscore=0 clxscore=1015 suspectscore=0 spamscore=0 phishscore=0 bulkscore=0 impostorscore=0 priorityscore=1501 malwarescore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2606300140 On 6/30/2026 12:49 PM, Krzysztof Kozlowski wrote: > On Mon, Jun 29, 2026 at 04:10:17PM +0530, Anvesh Jain P wrote: >> Document the qcom,purwa-iot-evk-ec compatible for the embedded controller >> found on Purwa IOT EVK boards. Like the other reference designs, it uses > > EC on an IoT device? This needs some explanation of hardware. > > Best regards, > Krzysztof > The "IOT EVK" boards are full Snapdragon reference/development kits, not small sensor-class IoT devices. Like the CRD, the Purwa IOT EVK carries an on-board embedded controller (on a separate MCU) that handles fan control, temperature sensors and EC state-change/suspend notifications. The existing hamoa-iot-evk board already documents the same EC via qcom,hamoa-iot-evk-ec. If needed I can expand the commit message to explain this. -- Best Regards, Anvesh