From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 70A60214807 for ; Thu, 21 Aug 2025 20:52:36 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755809559; cv=none; b=a64pD6uNcnS5looT9D4xkM8lXK973+taw4grrFEZ5/9QKF10wgt4wsfz4dVmyYVtzCaRyVnscqh0UNmH4OBWWcZ2JHkb2ittq68fTLfvNx7dZs1H24BwSs2VioNQFuEZ4H745cDYEgvc68F7Qg3amV/zS4I8CzniWFlVHH0bZtY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755809559; c=relaxed/simple; bh=ZXq0cWBSStXhb51kKFQC4dUe61b5u6QYn/AgF5xIQvc=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:To:Cc; b=PcuFHimufJpeDiXDggztCNocb+GPf2nfAs12BC6banunXnurKsle0ZFtYxZi2rhSM3vkWwqxfudl+klmLL6kt86RXx0JWPWklzWoW7B7NVNMUqkoT2zIauDsqKVqiMZBgiOf/sY55P6vGLXWARc8LCrrWlmq/V5gMCOvAnqw4DI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=hYKGSRyo; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="hYKGSRyo" Received: by smtp.kernel.org (Postfix) with ESMTPSA id C6163C4CEEB; Thu, 21 Aug 2025 20:52:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1755809555; bh=ZXq0cWBSStXhb51kKFQC4dUe61b5u6QYn/AgF5xIQvc=; h=From:Date:Subject:To:Cc:From; b=hYKGSRyo38KznToUG3pZaYfEu/90Vgbx8Am+nboT2XPHB6fpULYqfdku0F4hYJZh4 Q1KgZitH5ykWBAgUUhNlb19mzG9TsGef9XczuzKVO8+o9NKyhnZTyGJFNuWyU4qHKS yhix1ZWQEg/+wGtB0DyrQlEWpnIF3whzkPDielcjXMUjt8+n+/vyZDp6SQrbFg3z8Y 7QHs97uMDxAJ49VA5EGWW4LUfg/CI6hHq2lgPm6IKpzb0mbQBogO/SPYV4F4MY5ytc DD7M8X7/KcOiVXnkDJ9zyiHrYN/LsKX5YHUwHtLmhNXxMldkkZPg/56kxHIvPQ0228 7wEIPenbNU+NA== From: Nathan Chancellor Date: Thu, 21 Aug 2025 13:52:12 -0700 Subject: [PATCH] drm/bridge: cdns-dsi: Select VIDEOMODE_HELPERS Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20250821-cdns-videohelpers-v1-1-853e021908cf@kernel.org> X-B4-Tracking: v=1; b=H4sIAPuGp2gC/x3MTQqAIBBA4avErBMa6Ue6SrQwnXIgVByIILp70 vJbvPeAUGESmJsHCl0snGIFtg24YONBin016E4PndGonI+iLvaUAp2ZiqgJ0Wg7Yj9sDmqXC+1 8/89lfd8PGSK/JWMAAAA= X-Change-ID: 20250821-cdns-videohelpers-71182a6145bc To: Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , Devarsh Thakkar , Tomi Valkeinen , Aradhya Bhatia Cc: dri-devel@lists.freedesktop.org, patches@lists.linux.dev, Nathan Chancellor X-Mailer: b4 0.15-dev X-Developer-Signature: v=1; a=openpgp-sha256; l=1202; i=nathan@kernel.org; h=from:subject:message-id; bh=ZXq0cWBSStXhb51kKFQC4dUe61b5u6QYn/AgF5xIQvc=; b=owGbwMvMwCUmm602sfCA1DTG02pJDBnL2wUu/Ava5Wd5b7uH9R49VZHLAaf4Xh893hX9/mI8T 8e8D7vlO0pZGMS4GGTFFFmqH6seNzScc5bxxqlJMHNYmUCGMHBxCsBEvnkzMvxbl1w0p8jm3vum e/XFvwP69KM2e3c8yOlRPxdZxdy9Zysjw7fjOeF/PbqNpHzt5JbMFrSvf3eQvyPBLfCveOiqJUZ +bAA= X-Developer-Key: i=nathan@kernel.org; a=openpgp; fpr=2437CB76E544CB6AB3D9DFD399739260CB6CB716 When no other driver selects CONFIG_VIDEOMODE_HELPERS but CONFIG_DRM_CDNS_DSI is enabled, there is a linker or modpost error: ERROR: modpost: "drm_display_mode_to_videomode" [drivers/gpu/drm/bridge/cadence/cdns-dsi.ko] undefined! Select VIDEOMODE_HELPERS to ensure that this helper function is available to the driver. Fixes: ce4bc5ca7c1d ("drm/bridge: cdns-dsi: Use video mode and clean up cdns_dsi_mode2cfg()") Signed-off-by: Nathan Chancellor --- drivers/gpu/drm/bridge/cadence/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/gpu/drm/bridge/cadence/Kconfig b/drivers/gpu/drm/bridge/cadence/Kconfig index cced81633ddc..f1d8a8a151d8 100644 --- a/drivers/gpu/drm/bridge/cadence/Kconfig +++ b/drivers/gpu/drm/bridge/cadence/Kconfig @@ -6,6 +6,7 @@ config DRM_CDNS_DSI select DRM_PANEL_BRIDGE select GENERIC_PHY select GENERIC_PHY_MIPI_DPHY + select VIDEOMODE_HELPERS depends on OF help Support Cadence DPI to DSI bridge. This is an internal --- base-commit: 3f13bcc886fc034113cb75cb32b8d9db1216b846 change-id: 20250821-cdns-videohelpers-71182a6145bc Best regards, -- Nathan Chancellor