From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtpbgbr2.qq.com (smtpbgbr2.qq.com [54.207.22.56]) (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 0AE71396D03 for ; Fri, 17 Jul 2026 07:26:14 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=54.207.22.56 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784273178; cv=none; b=Wimwkc3seWDxf91YX9cm3LWHUGNHKb752K3+zugC6MMSi0NzBovjwNIK7fFi/2SL/BNyvn5Aih/47hoiayRmvCzpezDOvNoYy61vOs0wuT9gp0d7lx6rSNxlzBkKggRu4MvBYPWI3mE4LtbapG7xYivTkYNTCMSDIGB4hg795Ok= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784273178; c=relaxed/simple; bh=zQlI4IOJ1CQmFZRoFREJqk55N5DOc957Hr4Z9KIzQoo=; h=From:To:Cc:Subject:Date:Message-Id; b=FO3E01xIWaJeOB1k7SjP2dHg0TqIWhNMRacq+BqmFRlOi1uLOEw9Rorod/qx1HR3jjGa7uopYCrYAeKoX+OeDzrA36lwl1Aj3BeIXdZeWLaxtcBKNzHCnPxmuiiLFL/zdszuggLgmSMtTzbwl8n0ZWVpKkGXjt7V2SxA8swPrnU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=airkyi.com; spf=pass smtp.mailfrom=airkyi.com; dkim=pass (1024-bit key) header.d=airkyi.com header.i=@airkyi.com header.b=DXd0H/lm; arc=none smtp.client-ip=54.207.22.56 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=airkyi.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=airkyi.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=airkyi.com header.i=@airkyi.com header.b="DXd0H/lm" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=airkyi.com; s=altu2504; t=1784273163; bh=2tr1C24m6438i96kG1sAxMeU7KitaPRaCcPLLdcWwQ8=; h=From:To:Subject:Date:Message-Id; b=DXd0H/lmsOmmriGwKQGf0gtWINUfqnIRYjUSU+JtA6lkWOoUJK07dHGcx0xmALBiG pFfaGuQbbgxi9F71AKvgvm5lHlOldLb9w4otEA7dJGAlmg15sJI2SkAcl+TjwY1z9f 4SCtvq7qJWZfKcbtFXxdAGSIhZ/dwCkQmMvFD5SU= X-QQ-mid: esmtpsz21t1784273010t618e8b28 X-QQ-Originating-IP: vY/0NsjWxg2DNZvyWYpAsBikB9jLNme2YFNb+89ui+E= Received: from DESKTOP-8BT1A2O.localdomain ( [61.154.14.86]) by bizesmtp.qq.com (ESMTP) with id ; Fri, 17 Jul 2026 15:23:27 +0800 (CST) X-QQ-SSF: 0000000000000000000000000000000 X-QQ-GoodBg: 0 X-BIZMAIL-ID: 9790818574636150360 From: Chaoyi Chen To: Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , Luca Ceresoli , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Sandy Huang , =?UTF-8?q?Heiko=20St=C3=BCbner?= , Andy Yan , Vinod Koul , Chaoyi Chen , Sebastian Reichel , Nicolas Frattaroli Cc: linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-phy@lists.infradead.org Subject: [PATCH v3 0/5] drm/bridge: Implement generic USB Type-C DP HPD bridge Date: Fri, 17 Jul 2026 15:23:18 +0800 Message-Id: <20260717072323.96-1-kernel@airkyi.com> X-Mailer: git-send-email 2.17.1 X-QQ-SENDSIZE: 520 Feedback-ID: esmtpsz:airkyi.com:qybglogicsvrgz:qybglogicsvrgz6b-0 X-QQ-XMAILINFO: Ocu70LrMHRlZvP4wweOW+nuQbeIb0Am4QcsylXI3wPGuNos2srTWq6wo Mn32MSIbeMqc1BJSTT+g0L7B3dVzPMPi0PQDVy33yrfXKhhozzHrFPVOO0TY7XtcOPR3HJw MqlsZsfVSR34ZClJsoBiXXN74XwhK3Gbzt0s4u/qDEUNswoyvKyvGW+dDQjrTcuiHiLNVsN cWWHlTourgMqnnBFHyOHzG22LTF/UqanZ/ynPng8gqveRqvP4sGsGfaxTeNOehBYjbC/cD0 aq2LPDMV3uLU/tDyxqtDlykikNqxT3KEIrcuZYFzihqNrhefvowbFpG0g8Q8my9/McmT/Z0 vm+TPxQDpYbFpnbbLRIAGnA9TmKQFVwSlmkEkzHWfWRyp6TBydo+UMgPQcs4jNpVb9a7DOx mgteN4lTFd7ryDkhlSaEpm/4810YgMlTYW6Cjop10QVgOAMQxeMRCqy7tANQ6ZwF531kbpP Kmeoq8NdEPqUqnJZxU48WZuCriTub9PAFgr3s2431+kYaos/qK0+J5AnB99vzpECZBO6Rz9 WgYiuwlrexV6/A2uTM0/KDy6MG9o8UgfWQ+yo7mEO+tb0XNftmOipBdiQLgtxOT6d7VR/Y9 fpJj5H9azn+84pi8smauCBxi7dTHm4gt3pdJeLS96KRPTLrKfGVfRAlqioKgGyO3ARh33YX 7FyyUS+o5bjcIY3aPi2QiMHxcECaMow82Y5tYB0jaqbPGea7kQ5krRb9izNQtjgJ33yvidb JH9h/jNQX4me+8LxwogNUMr6rpxoboqLs46bct55ssK+j7ixG/J3huKQAS5NcL0fai/gkuA LXpa+Juv8moTdVQN8mJyDPCW38arrrvt3thVAQGFCP6VcnW3pETs9ml55GZ9vhRxZWhhHp0 NbtG5qQHiRoHr7XIlFepzxYz3dzAZPs39rn6c+X3+O9//+KdINtTJbNoPyYUd4tkoJVAe2Y 0Y3g2y6+u093h9bUyh2Nz9Nxub3GCFwmfN/2VKqazZ0/JrDExe5rnrhCOnz6JDBqz5HKK+M 8KhMz34g== X-QQ-XMRINFO: M/715EihBoGS47X28/vv4NpnfpeBLnr4Qg== X-QQ-RECHKSPAM: 0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: From: Chaoyi Chen This series is split from the v15 "Add Type-C DP support for RK3399 EVB IND board" series [1]. It focuses on the DRM bridge and Rockchip platform CDN-DP controller changes. [1] https://lore.kernel.org/all/20260304094152.92-1-kernel@airkyi.com/ ==== 1. Generic Type-C DP HPD bridge Currently, several USB-C controller drivers register their own DP HPD bridge via aux-hpd-bridge.c, each duplicating the same logic. For devicetree based platforms, the USB-C controller may vary across boards, and not every USB-C controller driver implements this feature. Patch 1 implements a generic DP HPD bridge that monitors Type-C bus events and automatically creates an HPD bridge when a Type-C port device with DP SVID is registered. 2. Multiple bridge model for CDN-DP The RK3399 has two USB/DP combo PHY and one CDN-DP controller. Patch 5 introduces a multi-bridge model where each PHY port gets a separate encoder and bridge, allowing flexible selection of the output PHY port. This is based on the DRM AUX HPD bridge rather than extcon. ==== Patch 1 adds generic USB Type-C DP HPD bridge (Dmitry, Heikki). Patch 2 adds new API drm_aux_bridge_register_from_node() (Neil). Patch 3 adds DRM AUX bridge support for RK3399 USBDP PHY (Neil). Patch 4 drops CDN-DP's extcon dependency when Type-C is present (Dmitry). Patch 5 adds multiple bridges to support PHY port selection (Dmitry, Luca). Changes in v3: - Link to v2: https://lore.kernel.org/all/20260608070805.88-1-kernel@airkyi.com/ (Sorry, I forgot to add the "v2" title, so it looks like v1.) - Remove now-redundant call to drm_connector_attach_encoder() - Rebase to v7.2-rc2 Changes in v2: - Link to v1: https://lore.kernel.org/all/20260521032854.103-1-kernel@airkyi.com/ - Add copyright text. - Remove useless goto. - Fix incorrect function names in the documentation comments. - Fix the check logic for dp->active_port (0 is valid). - Fix the uninitialized prev_port. - Remove duplicate logic from cdn_dp_switch_port(). - Fix the prototype of cdn_dp_bridge_hpd_notify(). - Properly release connector->fwnode. - Properly release next_bridge. Chaoyi Chen (5): drm/bridge: Implement generic USB Type-C DP HPD bridge drm/bridge: aux: Add drm_aux_bridge_register_from_node() phy: rockchip: phy-rockchip-typec: Add DRM AUX bridge drm/rockchip: cdn-dp: Support handle lane info without extcon drm/rockchip: cdn-dp: Add multiple bridges to support PHY port selection drivers/gpu/drm/bridge/Kconfig | 10 + drivers/gpu/drm/bridge/Makefile | 1 + drivers/gpu/drm/bridge/aux-bridge.c | 26 +- .../gpu/drm/bridge/aux-hpd-typec-dp-bridge.c | 54 +++ drivers/gpu/drm/rockchip/Kconfig | 1 + drivers/gpu/drm/rockchip/cdn-dp-core.c | 358 ++++++++++++++---- drivers/gpu/drm/rockchip/cdn-dp-core.h | 18 +- drivers/phy/rockchip/Kconfig | 2 + drivers/phy/rockchip/phy-rockchip-typec.c | 13 +- include/drm/bridge/aux-bridge.h | 6 + 10 files changed, 418 insertions(+), 71 deletions(-) create mode 100644 drivers/gpu/drm/bridge/aux-hpd-typec-dp-bridge.c -- 2.53.0