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[78.88.45.245]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-b486a174a6dsm1115628966b.90.2025.10.06.03.10.06 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 06 Oct 2025 03:10:09 -0700 (PDT) Message-ID: <53aafa84-6d6a-4963-827e-c1600270662f@oss.qualcomm.com> Date: Mon, 6 Oct 2025 12:10:05 +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 3/3] drm/panel: Add Novatek NT36532 panel driver To: Dmitry Baryshkov Cc: Junjie Cao , Neil Armstrong , Jessica Zhang , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Rob Clark , Dmitry Baryshkov , Abhinav Kumar , Sean Paul , Marijn Suijten , Antonino Maniscalco , Jonathan Marek , Eugene Lepshy , Jun Nie , dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, freedreno@lists.freedesktop.org References: <20251001135914.13754-1-caojunjie650@gmail.com> <20251001135914.13754-4-caojunjie650@gmail.com> Content-Language: en-US From: Konrad Dybcio In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Proofpoint-GUID: 5s6gaJaDsZwGmu1Li6YMHz09qOdpAuzK X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUxMDA0MDAyNyBTYWx0ZWRfXz0+jOhrCi3WM GIfO1TbTt9tZ3/VvgvqH4uu9riYp8dk1eeuqJVFomZ6cb6i4Bt6AaC6zoDhrT5GNmdjaiZjEpTr DPYIQKXpHIlbKOdBb+tSnTq+wuV/LKa3vDE0SifY7lyrF4x6ju9B/l2eNfrB2POvBRZwKd9uv3L bGRQxNRA0qWNBwClOzYgjBFlyAMFBQacEWu5cGFrx/dLgt6+Hd0tRazqMwm4tbMJ8wQq6mmjCjz tnk8YNp08+phhHcjxFn/N0Zr0t2jfk5BGFseyBNV4leRnBZY4Atz3v5Hzvah/lzy75mChqgEoIn TypJmbBW3q4/7M/YCsCGgi6A53SKtj4wV4q61ySDoMPByLIMmyv9NFLYh3wJfEr21tW25MIf9yM N+3VM77WiuUbtMDA4L0hQt8QnjTTNQ== X-Authority-Analysis: v=2.4 cv=Vqcuwu2n c=1 sm=1 tr=0 ts=68e39586 cx=c_pps a=JbAStetqSzwMeJznSMzCyw==:117 a=FpWmc02/iXfjRdCD7H54yg==:17 a=IkcTkHD0fZMA:10 a=x6icFKpwvdMA:10 a=pGLkceISAAAA:8 a=0RrB5Ro-Ny3bBzvrWzsA:9 a=QEXdDO2ut3YA:10 a=uxP6HrT_eTzRwkO_Te1X:22 X-Proofpoint-ORIG-GUID: 5s6gaJaDsZwGmu1Li6YMHz09qOdpAuzK X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1117,Hydra:6.1.9,FMLib:17.12.80.40 definitions=2025-10-06_03,2025-10-02_03,2025-03-28_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 adultscore=0 malwarescore=0 spamscore=0 priorityscore=1501 suspectscore=0 bulkscore=0 clxscore=1015 impostorscore=0 phishscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2509150000 definitions=main-2510040027 On 10/6/25 12:02 PM, Dmitry Baryshkov wrote: > On Mon, Oct 06, 2025 at 11:24:35AM +0200, Konrad Dybcio wrote: >> On 10/2/25 4:04 AM, Dmitry Baryshkov wrote: >>> On Wed, Oct 01, 2025 at 09:59:14PM +0800, Junjie Cao wrote: >>>> Add a driver for panels using the Novatek NT36532 Display Driver IC, >>>> including support for the CSOT PPC100HB1-1, found in the OnePlus Pad 2 >>>> tablets. >>>> >>>> Signed-off-by: Junjie Cao >>>> --- >>>> MAINTAINERS | 7 + >>>> drivers/gpu/drm/panel/Kconfig | 10 + >>>> drivers/gpu/drm/panel/Makefile | 1 + >>>> drivers/gpu/drm/panel/panel-novatek-nt36532.c | 437 ++++++++++++++++++ >>>> 4 files changed, 455 insertions(+) >>>> create mode 100644 drivers/gpu/drm/panel/panel-novatek-nt36532.c >>>> >>>> + >>>> +static const struct panel_info csot_panel_info = { >>>> + .width_mm = 250, >>>> + .height_mm = 177, >>>> + .lanes = 4, >>>> + .format = MIPI_DSI_FMT_RGB888, >>>> + .mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_CLOCK_NON_CONTINUOUS | >>>> + MIPI_DSI_MODE_LPM, >>>> + .display_mode = csot_display_mode, >>>> + .dsc_slice_per_pkt = 2, >>> >>> As this is not a part of the standard, what if the DSI host doesn't >>> support this feature? >> >> Shouldn't the core gracefully throw something like an -EINVAL? > > There is no 'core' here. Each DSI DRM host manages DSC on their own. drm_dsc_helper? Konrad