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[78.88.45.245]) by smtp.gmail.com with ESMTPSA id 4fb4d7f45d1cf-658b46ae22fsm7543699a12.35.2026.02.02.02.36.06 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 02 Feb 2026 02:36:06 -0800 (PST) Message-ID: <24f770ff-e4a6-4f8c-be72-26ff5cbf8d1a@oss.qualcomm.com> Date: Mon, 2 Feb 2026 11:36:04 +0100 Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: Questions About SM8550 Support To: Aaron Kling Cc: linux-arm-msm@vger.kernel.org References: 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: oMiH9Fp-Sjn44DlP877C_SKaquIQZh7N X-Proofpoint-GUID: oMiH9Fp-Sjn44DlP877C_SKaquIQZh7N X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMjAyMDA4NyBTYWx0ZWRfX5GR+2704kF6M Va7aIgF6QPFL96vMZs4vMS2n7NKqu7uLsF8/3ZAMhgY+w7n87y8p7c5sfq35iUNdc9RwwK4e/c8 TvufK6HexopZRMNv0PWYjZ05j95dUtMYk8m4YoiajhMiSJeSDHyCvwxmijkhEcK2GIWk4JQPrZy DJt7DgCGZu2Mf2G0JrAdZXGtSaZKtIQj6jyaictTiH81lyJg7QS6MmE7mrhSAODlHdBVabKSfEf yjbR3MvcG00135OgPVNVvmURsR28MmissjUIHXJfj9iUXHRecugU4DQb0nFbBTc6ScEHwSIisbK VzZof0KNepNkAd4CMGog7+maTCDb4jjeEDi+g9ESYkNb4KizyZbcL4WFiWt/Hs8Nc/VGPaU3Z4h /IaJgl0n7BgplTkximMQUmf3FrCCHxIIu0cDVq9TQFzxdzWDqk84XnclvdyoeWv2NCiBuwXFPTO P5DQ1nM/CZUH6pOGVxA== X-Authority-Analysis: v=2.4 cv=bIEb4f+Z c=1 sm=1 tr=0 ts=69807e19 cx=c_pps a=hnmNkyzTK/kJ09Xio7VxxA==:117 a=FpWmc02/iXfjRdCD7H54yg==:17 a=IkcTkHD0fZMA:10 a=HzLeVaNsDn8A:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=EUspDBNiAAAA:8 a=ZD8lPOToiCuzMJ-KG_cA:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 a=PEH46H7Ffwr30OY-TuGO:22 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-02-02_03,2026-01-30_04,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 phishscore=0 malwarescore=0 lowpriorityscore=0 adultscore=0 impostorscore=0 clxscore=1015 suspectscore=0 bulkscore=0 spamscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2601150000 definitions=main-2602020087 On 1/30/26 6:13 PM, Aaron Kling wrote: > On Fri, Jan 30, 2026 at 5:01 AM Konrad Dybcio > wrote: >> >> On 1/27/26 11:48 PM, Aaron Kling wrote: >>> I am working on the AYN Odin 2 qcs8550 series of devices, specifically >>> for Android, using mainline kernel drivers. I have come across some >>> missing functionality and failures that I would like to inquire about. >>> >>> * ABL fails to load a dtbo using a baseline dtb unmodified from >>> mainline. Using changes described in the gunyah watchdog thread [0], a >>> dtbo loads and the devices boot as expected. If any of the changes in >>> that post don't exist in the base dtb, abl will fail to load the dtbo >>> and go to the bootloader menu. This appears to be an issue in the >>> baseline abl code, affecting all devices of that generation. Would it >>> be allowable to merge a change adding those changes to the sm8550 >>> dtsi, allowing an unmodified mainline dtb to work with overlays? >> >> ABL is.. picky.. to say the least >> >> Could you please try to check if what once worked for me on a >> 8550-based Sony phone would happen to work for you too? >> >> 39c596304e44 ("arm64: dts: qcom: Add SM8550 Xperia 1 V") > > Is the question if the devices boots without dtbo? Yes, that works. That's nice! > And fastboot erase even works too, though that may be because I'm not > using appended dtb, I'm using dtb in vendor_boot. The setup I'm trying > to use is a base dtb that has all the common nodes for the AYN qcs8550 > devices, then a device specific dtbo for the diverging parts of the > four devices. I'm not sure if that's a good idea if the bootloader is (effectively) broken I'd consider building full DTBs for each device Konrad