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Mon, 02 Nov 2026 05:47:57 -0800 (PST) Received: from [192.168.226.248] ([178.235.128.140]) by smtp.gmail.com with ESMTPSA id 4fb4d7f45d1cf-6b4eca29382sm3342417a12.37.2026.11.02.05.47.54 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 02 Nov 2026 05:47:56 -0800 (PST) Message-ID: Date: Mon, 2 Nov 2026 14:47:53 +0100 X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 3/3] arm64: dts: qcom: Add Microsoft Surface Laptop 8th Edition To: Gopikrishna Garmidi , Bjorn Andersson , Konrad Dybcio , Abel Vesa , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Sibi Sankar , Pankaj Patil Cc: Rajendra Nayak , linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org References: <20261027-mahua-surface-laptop-v2-0-7dd903a12d22@oss.qualcomm.com> <20261027-mahua-surface-laptop-v2-3-7dd903a12d22@oss.qualcomm.com> Content-Language: en-US From: Konrad Dybcio In-Reply-To: <20261027-mahua-surface-laptop-v2-3-7dd903a12d22@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Proofpoint-ORIG-GUID: c_7F5Q_l3HOGccc0V_NQcQm--V9STYGw X-Proofpoint-Spam-Info: AW1haW4tMjYxMTAyMDA1NCBTYWx0ZWRfX4IN4v1frQS4W avFGmIBBMGyrX+5JFHpTy/yuhn9NiYfe9R6e0RDSvrs0BsOTFHJYQxwrDNHBXtS+p/k40MUmzRi Y7FpjsxvWTpgwbLx18LQbO3DYyI2210= X-Authority-Analysis: v=2.4 cv=ZbyIpcVA c=1 sm=1 tr=0 ts=6ae89491 cx=c_pps a=KB4UBwrhAZV1kjiGHFQexw==:117 a=PRfkaYvzSr8QmIIGAkY2Sg==:17 a=IkcTkHD0fZMA:10 a=zJRp6_cAMcgA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=ZpdpYltYx_vBUK5n70dp:22 a=b-6vMC33NXqCuZ8Zj8gA:9 a=QEXdDO2ut3YA:10 a=o1xkdb1NAhiiM49bd1HK:22 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYxMTAyMDA1NCBTYWx0ZWRfX/Onqs4rt1lhX TPjU/K1YcjBKeG+0QGqSwhdakZWeR1Zoo1csdMT52WOSl4FvM8hvYFH8VBuVD1Eh3GRJr1//lNc klP5z54Veu3ekhrZlIXtNOGqhlq7CVPqeqcNEmqzE+pA/sL1buYhjB/Ly0QahZateTSO3EE8J1d 4kTKnK9RK7MJdzSGMlUuHozihJhuwVRw0BFuRWpwEBQ9fnRvkKWNAJOfITFut4v4wBdOKzuIm9z +armoHvenU+VR/9dIOgcXr3UPqLnOEFgNlxEYK797Q1lf+k/WPUoANxZL7i5AZF5GSlYtSEFAON zlfe9llrW2r2M/hjRq6xcsHxYYiDSPHWU+53iIdamliw/gJb2qcw6UoUwx5LYwvWAWaRzeotqIM XiJ9WvQhTqpi3ODmmSszHhoJVy/IEkzyLyQl0fHv7i/UgdAQ4TajrYjjXLvi1VrB7+46tj2eSTD dTKYHeFxf/TGUwYo20g== X-Proofpoint-GUID: c_7F5Q_l3HOGccc0V_NQcQm--V9STYGw X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.138,FMLib:17.12.100.49 definitions=2026-11-02_03,2026-11-02_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 lowpriorityscore=0 suspectscore=0 malwarescore=0 phishscore=0 adultscore=0 clxscore=1015 bulkscore=0 impostorscore=0 spamscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2610300000 definitions=main-2611020054 On 10/27/26 8:33 AM, Gopikrishna Garmidi wrote: > Add support for the Microsoft Surface Laptop 13.8" 8th Edition, which is > built on the Mahua SoC. Most of the board follows the Qualcomm reference > design. The keyboard, fan and platform profile sit behind the Surface > Aggregator Module on uart22, same as on the Surface Laptop 7. [...] > + serial0 = &uart22; > + serial1 = &uart14; > + }; > + > + chosen { > + stdout-path = "serial0:115200n8"; > + }; This sends console output straight into your EC, either enable the debug UART and point it there or remove this hunk [...] > + reserved-memory { > + linux,cma { > + compatible = "shared-dma-pool"; > + size = <0x0 0x8000000>; > + reusable; > + linux,cma-default; > + }; > + }; This hunk should not be necessary, it was on Hamoa laptops because we didn't have control over the PCIe SMMU and needed a CMA space Konrad