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 219593ACEF3 for ; Mon, 27 Jul 2026 06:44:42 +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=1785134688; cv=none; b=PDzyLai4pGXuPXqQGkoJVeRlWs1UM6sn5+Fu/j6bDtWbg2iC50CPWlJnUZvYAPP//8bHajUgnx5hD05PClg6J2IDG+T1ky44G37l4XQv+zsylvkqw0l6FQ8j5zXnruLpDuSAA2JaVCetPMVRhbwIdm8mL2dQY1+ipFVYGM1Z4WY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785134688; c=relaxed/simple; bh=Suqj8ovilXQgIXvyLr7cFfUHzWxi66htvkIUT/QpJs0=; h=From:To:Cc:Subject:Date:Message-Id; b=b/DH92FSgsEPaL9l1DP3v0LKfi4oPyamIVHNcRTaYk6N0SzhwNMvVeuqaoRvT2joEr8Ivs6SvKaytNiYLU9wH0a3XWi+uZ/5IgvGSU2tasVU2o/zE5/3RdJ11wkxeHQczbOoGgtupEmXoI+kbSj7E3mBFiocXIrmvwpRH+Tygbs= 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=vGKfoi1u; 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="vGKfoi1u" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=airkyi.com; s=altu2504; t=1785134657; bh=tUuZrKapaqrR58DBEzt7pydUceq7VRn6Enn+YN7nDOc=; h=From:To:Subject:Date:Message-Id; b=vGKfoi1uJsKMKqMW0dZr/TdPbN0VxYPdIhAejRHMKkhQ0b09hM4SUWTOL17MuvPvy EgWIqnPxjCNcLyZNAYw353qxbQWCHaPP1ejm9kvdy5sSEbGhxAVWy7bLelus9UbpNb ETSOJXN0NNs9YCgIvncL32HBJtHDm8UO5+/74hN4= X-QQ-mid: esmtpgz10t1785134655t8d07a1af X-QQ-Originating-IP: +t6bBls4CjzrhjJMvTj2vHStvI/0FJ5ZxtB1XEmdG40= Received: from DESKTOP-8BT1A2O.localdomain ( [61.154.14.86]) by bizesmtp.qq.com (ESMTP) with id ; Mon, 27 Jul 2026 14:44:12 +0800 (CST) X-QQ-SSF: 0000000000000000000000000000000 X-QQ-GoodBg: 0 X-BIZMAIL-ID: 4435885158294995531 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 , Heikki Krogerus 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 v4 0/5] This series is split from the v15 "Add Type-C DP support for RK3399 EVB Date: Mon, 27 Jul 2026 14:44:03 +0800 Message-Id: <20260727064408.101-1-kernel@airkyi.com> X-Mailer: git-send-email 2.17.1 X-QQ-SENDSIZE: 520 Feedback-ID: esmtpgz:airkyi.com:qybglogicsvrgz:qybglogicsvrgz6b-0 X-QQ-XMAILINFO: NK1jrlzPMOAHbn//Zaz6Rs+MfNwSTwytI0tIOUMNydKFuhLRO60N1BcK hR49GpzmeiXHnFzBpNzdrRlkOHCiirTqkmWj8oUjlQT4Q6Uph05bX/82IJNo/3tUJgTx+3+ olgAykV40m7vH5jXAPVu88pfZgKfpIWH8uc+DULQBj0QnwLKNagbgxeiecaL4HpsJqbXlnc I5wj0diV/fdcZBcCBTHEGqpbwUcWFQzeic5gBlY/+ev2KE1YUEaa72E+rb8WNoxhE+nG7bL K6TL3RjJ86saBRdmbzKMou7oJEUVYxaXoKnP1QtVGygNG/+QONHzqFL+oZr45TFBbVKgtdZ w9tjWtqRK+KIGpb/T8Viu0E8mSJA/zQ1zhatIAqTET+YChler2LDKDdyL52vdlnlYfJs42i OY2TmaWx17B3TIxL9xtq7Ms9PU/xlE5MLWZu8MFEi/EZqSMv91PNKHxybhAD6LvWTHEjhbK pMCgDSqrs5WB1/h4CaDz0NI7nHoNSj0vkbqldUzZtu7b6aHjk+rIHTP/30ganN9oCP6w8Yh kHxnXuruqeMDi9sr71NmwQc2gz25pmY4gHoBnFib41IwgL2Vm1q8dsHjMDGQ6F8wvvzxeI2 UKJjFvQNB6nzkgym5PP1LLAIFdbRTYg2yJ2l/LR7qa+pDIyUL4JcCiyqFE+ORNC4qW0mEKo e7shshu5UU+R1wdT8gwfIrSXUOhuaLoZOI77Fh7ASySBhAJRswrho0z6NdZcXDobadT6+i/ JvMOQ8UgtdYJnWtxpIdEg0YkO5HXgTc3wLFGL0dFs1gKSHWLSB5d0H4FIxjV1iat7ybcOxy e/ttmUCcArvWQR1zxQNFhn+Cb2gjkz3S8VVKzWchueEmVfBJouW95XmrqWL6Z5mBSrDJ6oA 2kNQ8KU0o/lDZNW9hQcCfmnMZeO6hGtKorXlLPmhgazsjm0cl5MEksJ1rEXuwfXsdTnQaOL KOlK7AXPfuw8zW1JjH8hWWpiexDqQqBsGhWmiVQ67xnqqdUgFWaenSzDUgFK9LY5e3dE= X-QQ-XMRINFO: MSVp+SPm3vtSI1QTLgDHQqIV1w2oNKDqfg== X-QQ-RECHKSPAM: 0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: From: Chaoyi Chen [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 v4: - Link to v3: https://lore.kernel.org/all/20260717072323.96-1-kernel@airkyi.com/ - Scan the entire typec_bus and attempt to register the hpd bridge, so as not to miss devices that were already added during initialization. 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 | 64 ++++ 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, 428 insertions(+), 71 deletions(-) create mode 100644 drivers/gpu/drm/bridge/aux-hpd-typec-dp-bridge.c -- 2.53.0