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[2001:14ba:a0c3:3a00::4c9]) by smtp.gmail.com with ESMTPSA id 38308e7fff4ca-37e6feba575sm4180081fa.21.2025.12.04.01.47.29 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 04 Dec 2025 01:47:29 -0800 (PST) Message-ID: <191ee8f8-b48a-44be-9b2a-3690a362c541@oss.qualcomm.com> Date: Thu, 4 Dec 2025 11:47:28 +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] drm/imx: select DRM_DISPLAY_HELPER as needed To: Arnd Bergmann , Philipp Zabel , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Shawn Guo , Sascha Hauer , Dmitry Baryshkov Cc: Arnd Bergmann , Pengutronix Kernel Team , Fabio Estevam , dri-devel@lists.freedesktop.org, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org References: <20251204094635.1030724-1-arnd@kernel.org> Content-Language: en-US From: Dmitry Baryshkov In-Reply-To: <20251204094635.1030724-1-arnd@kernel.org> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Proofpoint-GUID: V51FP9bME8Q6EC_qiRv2dqx6dN_M_2nZ X-Proofpoint-ORIG-GUID: V51FP9bME8Q6EC_qiRv2dqx6dN_M_2nZ X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUxMjA0MDA3OSBTYWx0ZWRfX9lvJsTKpIgaz h8EkOBoLrL9NoTfySO3XTPbZ2X7T0u03iQGOTLCZT31VGv8oxHcnhsdXfvVsOp/xGnVWIwID/kw J3/X1mFNolFmR62GirhyBP5Te4lgm5eafhegrZ5HnxlzPap+CpXW0ijivXGZ6pj3+Htnkw94Nak cYRDcQ01rU2Fia7cCN/TFDp6GA1dtxASWWrtQNeXb2faSscxaQchAJzLQ73jl+bJ2aZu27c/d4X /Ri7jZaQ/de9/DXrFObhMjqSty4FnBHPcTjVVlr6tIx2nacEsbZI4f7yZfpAajcs/c7Bl/+dAOY cDqdw1OHClNQGM4hi/ywWe6GrAwhacphHnJucS5ebuua/zBZv6/kgXtjiRDigFDpSeGB31hHa2T Yx2eLvNqKoVbA2L8xKjetaw61L5gTw== X-Authority-Analysis: v=2.4 cv=Scz6t/Ru c=1 sm=1 tr=0 ts=693158b4 cx=c_pps a=qKBjSQ1v91RyAK45QCPf5w==:117 a=xqWC_Br6kY4A:10 a=IkcTkHD0fZMA:10 a=wP3pNCr1ah4A:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=EUspDBNiAAAA:8 a=t8mZWZZekR3hrNGy9_IA:9 a=QEXdDO2ut3YA:10 a=NFOGd7dJGGMPyQGDc5-O:22 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=2025-12-04_02,2025-12-03_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 lowpriorityscore=0 adultscore=0 clxscore=1015 impostorscore=0 bulkscore=0 suspectscore=0 malwarescore=0 priorityscore=1501 spamscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2510240001 definitions=main-2512040079 On 04/12/2025 11:46, Arnd Bergmann wrote: > From: Arnd Bergmann > > CONFIG_DRM_BRIDGE_CONNECTOR is a bool option that turns on features of > the display helpers, which are in a module controlled by the (tristate) > CONFIG_DRM_DISPLAY_HELPER. If the display helpers are in a loadable > module, a built-in driver trying to use the bridge connectors fails > to link: > > x86_64-linux-ld: drivers/gpu/drm/imx/ipuv3/parallel-display.o: in function `imx_pd_bind': > parallel-display.c:(.text+0xcd): undefined reference to `drm_bridge_connector_init' > x86_64-linux-ld: drivers/gpu/drm/imx/ipuv3/imx-ldb.o: in function `imx_ldb_bind': > imx-ldb.c:(.text+0x224): undefined reference to `drm_bridge_connector_init' > > Select the DRM_BRIDGE_CONNECTOR symbol as well, to ensure it's built-in > if anything needs it. > > Fixes: f94b9707a1c9 ("drm/imx: parallel-display: switch to imx_legacy_bridge / drm_bridge_connector") > Signed-off-by: Arnd Bergmann > --- > drivers/gpu/drm/imx/ipuv3/Kconfig | 2 ++ > 1 file changed, 2 insertions(+) Reviewed-by: Dmitry Baryshkov -- With best wishes Dmitry