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[78.88.45.245]) by smtp.gmail.com with ESMTPSA id 4fb4d7f45d1cf-640e6a5c7e5sm4225776a12.24.2025.11.05.02.13.45 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 05 Nov 2025 02:13:47 -0800 (PST) Message-ID: <1d1cd6eb-6004-47e4-b6e6-006928e79578@oss.qualcomm.com> Date: Wed, 5 Nov 2025 11:13:45 +0100 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 02/20] arm64: dts: qcom: Introduce Kaanapali SoC To: Jingyi Wang , Akhil P Oommen , Bjorn Andersson , Konrad Dybcio , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, aiqun.yu@oss.qualcomm.com, tingwei.zhang@oss.qualcomm.com, trilok.soni@oss.qualcomm.com, yijie.yang@oss.qualcomm.com, Tengfei Fan References: <20250924-knp-dts-v1-0-3fdbc4b9e1b1@oss.qualcomm.com> <20250924-knp-dts-v1-2-3fdbc4b9e1b1@oss.qualcomm.com> <36fcea98-06a6-4ca7-a378-77b44b196a9d@oss.qualcomm.com> <7fc6ab09-44c9-434c-ab19-764c74b1176b@oss.qualcomm.com> <7f8aa7b5-40b6-456d-8b33-0cd505a6bc3c@oss.qualcomm.com> Content-Language: en-US From: Konrad Dybcio In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Proofpoint-ORIG-GUID: kh0HdPFFeK6uCWgZ_vvfTmn2hTnHiW_x X-Proofpoint-GUID: kh0HdPFFeK6uCWgZ_vvfTmn2hTnHiW_x X-Authority-Analysis: v=2.4 cv=MK1tWcZl c=1 sm=1 tr=0 ts=690b235e cx=c_pps a=EVbN6Ke/fEF3bsl7X48z0g==:117 a=FpWmc02/iXfjRdCD7H54yg==:17 a=IkcTkHD0fZMA:10 a=6UeiqGixMTsA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=VwQbUJbxAAAA:8 a=COk6AnOGAAAA:8 a=1xuCUfFpP9sfGznx14oA:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 a=a_PwQJl-kcHnX1M80qC6:22 a=TjNXssC_j7lpFel5tvFf:22 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUxMTA1MDA3NSBTYWx0ZWRfX19S9nf8cFg/k Cr7Xp4CSjXI8c/Zp5kFTaIHxlP8D/LZ0j8oj68eqV9oDdVkqh7IG62WqhLYGCxyI46hi3Nhe9Kj Wei9qiA8A8UWaoo4LNjLFbEFnBwMncLGn/WUdfaV09lfF8kKwXF0qGAwtdjszyc8TzfJpuKcgNG SG1ec87gVL2dBCBFS18/LIw+r46a6h0kwWYwFve4tc6aWa50/55pyaEtG1Q27BctyU+8kQI0U6Z 10kN64oafV7yO2rOKWNBG7DNt568AXUU67X7f7bvIxT9d2I4EJX4V71JFbSyMHcI2GUpPtA3hlt /c8DUko/qOfq2K/3Ey4ft/zGbF3m60gOWqFq7YmAQ+7vEcDaVe2+KhpbwufzK/d5+DN2bcBE2Vu V1PLSuFOcZr3jyTFCVDyOicK+69Bdg== 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=2025-11-05_04,2025-11-03_03,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 impostorscore=0 phishscore=0 priorityscore=1501 lowpriorityscore=0 adultscore=0 bulkscore=0 clxscore=1015 spamscore=0 suspectscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2510240001 definitions=main-2511050075 On 11/5/25 8:30 AM, Jingyi Wang wrote: > > > On 11/4/2025 8:54 PM, Konrad Dybcio wrote: >> On 11/4/25 10:04 AM, Jingyi Wang wrote: >>> >>> >>> On 10/14/2025 7:46 PM, Akhil P Oommen wrote: >>>> >>>> >>>> On 9/25/2025 5:47 AM, Jingyi Wang wrote: >>>>> Kaanapali is Snapdragon SoC from Qualcomm. >>>>> >>> <...> >>>>> + >>>>> +    reserved-memory { >>>>> +        #address-cells = <2>; >>>>> +        #size-cells = <2>; >>>>> +        ranges; >>>>> + >>>> >>>> This is missing a bunch of reserved regions which causes device crash when you stress memory allocation. >>>> >>>> -Akhil. >>>> >>> >>> Hi Akhil, >>> >>> We will not add all the reserved-memory in dts, other regions are designed to >>> be added in bootloader. >> >> If what Akhil says is true and Linux is crashing, something must be >> wrong.. >> >> Konrad > > Hi Konrad, > > There was discussion about the reserved memory in QCS8550 change. > And the conclusion is that reserved memory regions which aren't relevant to > the kernel(like the hypervisor region) don't need to be described in DT to avoid > memory map change and update frequently. These regions will be runtime added > through bootloader. > > ref:https://lore.kernel.org/all/20240618072202.2516025-3-quic_tengfan@quicinc.com/ > > The bootloader we currently use for Kaanapali has not supported this, and we have > solutions like add temp change to add these in DTS until the final bootloader is > provided. I think we're well past that date though? OnePlus website says I can order their new flagship next week.. Konrad