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[78.88.45.245]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-af91a21c06bsm280116566b.119.2025.08.01.05.29.23 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 01 Aug 2025 05:29:25 -0700 (PDT) Message-ID: <0cf8f99c-a64b-43c4-a747-d5dd6fe28996@oss.qualcomm.com> Date: Fri, 1 Aug 2025 14:29:22 +0200 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 3/4] arm64: dts: qcom: sc8280xp: Add initial support for Ntmer TW220 To: Pengyu Luo Cc: aliceryhl@google.com, andersson@kernel.org, conor+dt@kernel.org, devicetree@vger.kernel.org, ebiggers@google.com, ilpo.jarvinen@linux.intel.com, joel.granados@kernel.org, konradybcio@kernel.org, krzk+dt@kernel.org, len.brown@intel.com, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, lossin@kernel.org, mingo@kernel.org, ojeda@kernel.org, robh@kernel.org, sfr@canb.auug.org.au, vanyang@smail.nju.edu.cn, viro@zeniv.linux.org.uk References: <20250706034303.5404-1-mitltlatltl@gmail.com> <9efafa16-e6db-4227-9b47-5803f5933a7d@oss.qualcomm.com> Content-Language: en-US From: Konrad Dybcio In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Authority-Analysis: v=2.4 cv=Vdn3PEp9 c=1 sm=1 tr=0 ts=688cb327 cx=c_pps a=WeENfcodrlLV9YRTxbY/uA==:117 a=FpWmc02/iXfjRdCD7H54yg==:17 a=IkcTkHD0fZMA:10 a=2OwXVqhp2XgA:10 a=78uhRy8ZE0Nw9m-UYXkA:9 a=QEXdDO2ut3YA:10 a=kacYvNCVWA4VmyqE58fU:22 X-Proofpoint-ORIG-GUID: Yn5SWrAtVy17wy-TeO_cVKN6r_O7xoz0 X-Proofpoint-GUID: Yn5SWrAtVy17wy-TeO_cVKN6r_O7xoz0 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwODAxMDA5MiBTYWx0ZWRfX3lUP6mSeFlSt iZWOA26vRwmATCjV8cWRehTkC0hUaPE6YorToRITjPjdaSr7e/PVX2iq8MYwVcx/QoUTpE2+RgS QKbXTRO+RqluvQDYHGjsmqz8vX7NKnycNyx13/fwr99Uuq9O2jU4GpPpry+CiKLJ4uYDp/J41Ba zNcBvW7Le9Y3P3ICi+6H8qm/c+UAx26WHvJCdcYEMtIDDd7r1G+kGDKwxB8nBRtCcFYw35nfB6N oKMV9fKhAwKey9IXwfWKq1nE1mYQzQvJiWHcXRzcCCW2g9ovkB0/gq6DpZ7dojzdhhK0PtJu3b+ 89DlWoOZ1zw0673ciJGrue1APbqbp8DKO5D71aLM+YD4frt7DuaL5mpPgUUY754VOqAH53X6g3Z Lb1uBfJEsmhg8vcM0gauQXf52dGBXeBXWHFyF+8xC9MzRDGDHdnEUa6+5D9jpm8EE68czypa X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1099,Hydra:6.1.9,FMLib:17.12.80.40 definitions=2025-08-01_04,2025-07-31_03,2025-03-28_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 mlxscore=0 lowpriorityscore=0 impostorscore=0 clxscore=1015 priorityscore=1501 malwarescore=0 mlxlogscore=999 spamscore=0 phishscore=0 bulkscore=0 adultscore=0 classifier=spam authscore=0 authtc=n/a authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2505280000 definitions=main-2508010092 On 7/31/25 5:05 AM, Pengyu Luo wrote: > Linux: >> ae94000 20050001 000001f3 0000000b dddd1011 >> ae94010 00009130 31211101 3e2e1e0e 00001900 >> ae94020 00000000 05190019 064c000c 065f0528 >> ae94030 00060000 00000000 00040000 14000000 >> ae94040 06100006 00003c2c 00001000 00000008 > Windows: >> ae94000 20050001 000001f7 00000008 00001010 >> ae94010 00009130 31211101 3e2e1e0e 00001900 >> ae94020 00000000 05320032 064c000c 065f0551 >> ae94030 000c0000 00000000 00040000 14000000 >> ae94040 00100008 00013c2c 9bb9b000 00000004 0xae94008 differs, bits 0 and 1 say that the cmd mode engine is busy doing something (did you set MIPI_DSI_MODE_VIDEO?) 0xae94024 says: Linux: ACTIVE_H_END=1305 ACTIVE_H_START=25 Windows: ACTIVE_H_END=1330 ACTIVE_H_START=50 0xae9402c: Linux: VTOTAL=1631 HTOTAL=1320 Windows: VTOTAL=1631 HTOTAL=1361 0xae94030: Linux: HS_END=6 Windows: HS_END=12 0xae94040: Linux: RGB565 (16 bpp) bits 25/26 are "set RGB888 for DSI1 stream" Windows: RGB888 (24 bpp) (suggesting your panel driver is wrong) 0xae94044: you may want to move the /* Always insert DCS command */ data |= DSI_CMD_CFG1_INSERT_DCS_COMMAND; dsi_write(msm_host, REG_DSI_CMD_CFG1, data); in dsi_host.c out of the if (!video), not sure if it's correct but that's what Windows seems to be setting The other differences are due to the current DCS command(s) being processed Hope this helps Konrad