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[103.229.18.19]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-36ca3966daasm4765452eec.23.2026.11.03.21.36.22 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 03 Nov 2026 21:36:26 -0800 (PST) Message-ID: <8bed7caf-2b15-4b8a-ae9e-78f34ed780cf@oss.qualcomm.com> Date: Wed, 4 Nov 2026 11:06:19 +0530 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: Konrad Dybcio , 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: Gopikrishna Garmidi In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYxMTA0MDAyMiBTYWx0ZWRfX2cCNWHRgCZYD J/gLe6JLPP/oTlZ/789UHvBm71qLKWP5bGlyiv6sGydvaJoVrVhIOzxuksc3bEipXbyt6EKsAq1 UQQyeTVLvNkWK2xRzMtSOgtX3pevh4s7Qo7etVSZ7gGUuhAO+AcIEdfXWR92O4P8FLA/a4sgGKN 2yra7V6yNbwJb8kQawI98cBXrIWV7+NydPURk4JAFgPl++Yf2VtAhWF+ItsnHMZdXRW4cc5QqIl tXpSdpUa10hK5OXTqAAH14PC2DwaMkL+bbPDETQdX+TADQt1u0gUDaLowugmlAICuDI0kcCNx9s FQTPoep3TqB0up9RqkZguxU7LTmVccOX8qkFN7gdgB7MGQWb0krg48+V3n8Zw6P1+Sti8z6CPJT xFjkVSXGfRy+ZCiyNBDqziqXDpFPSeQOm52IsFnZ0HeVJ0ytihIKl53mFFp7PapcfHzcasXdzyY en5pWLl825x5gm+IkSg== X-Proofpoint-Spam-Info: AW1haW4tMjYxMTA0MDAyMiBTYWx0ZWRfX0G1SV5rr7vo8 55qZar3YgGA6MpKJcuvANnQ0JGwuKWMET0JFFFmn33yVbFIdMwrQruNhxkWBxKH6Ja2D7Wmwb6Y SVSxqZs0u0tVy9ZbaLucBZAtjuKuuhM= X-Proofpoint-GUID: rgB1-8qyi6fvT4PE4yEsE1BCGn4XTD9_ X-Proofpoint-ORIG-GUID: rgB1-8qyi6fvT4PE4yEsE1BCGn4XTD9_ X-Authority-Analysis: v=2.4 cv=As17T+9P c=1 sm=1 tr=0 ts=6aeac45c cx=c_pps a=wEP8DlPgTf/vqF+yE6f9lg==:117 a=Ou0eQOY4+eZoSc0qltEV5Q==:17 a=IkcTkHD0fZMA:10 a=zJRp6_cAMcgA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=yOCtJkima9RkubShWh1s:22 a=YwhHPVNpwWi31JhFHYMA:9 a=QEXdDO2ut3YA:10 a=bBxd6f-gb0O0v-kibOvt:22 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=2026-11-04_01,2026-11-03_04,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 bulkscore=0 spamscore=0 priorityscore=1501 lowpriorityscore=0 malwarescore=0 adultscore=0 clxscore=1015 impostorscore=0 phishscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2610300000 definitions=main-2611040022 On 11/2/2026 7:17 PM, Konrad Dybcio wrote: > 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 > Right, thanks. There is no accessible debug UART on this machine (uart21 is not routed out), so I'll drop the chosen node in v3. > [...] > >> + 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 > Ack, will drop it in v3. Thanks, Gopikrishna