From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtpbgau1.qq.com (smtpbgau1.qq.com [54.206.16.166]) (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 6C6DF1A9FA0 for ; Thu, 30 Jul 2026 01:35:04 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=54.206.16.166 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785375310; cv=none; b=VNBsdyhpvW5ApCuub913uIDe0YA9CMiHFCRj75GaFWWhrH3HRi8tnjHQv9XFXMsjyWR4VY1SbeZm06vQ1ajQXxYVTV/ZFe+LwnlzVRgVs6QDWPlpbWbtpb7p5ow9cMZuibDuZw5iUf7bJsA/u5uZSuacV4cYaB3GRQqLPZR/N0I= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785375310; c=relaxed/simple; bh=wo1dUCjQNQJVJjCeT8VpeKlCQlTwJuzn3I3B0SuYB7I=; h=From:To:Cc:Subject:Date:Message-Id; b=s79dunaUJ2wLW8Uj86xLO4QJZ7bUBImGHIZ8uQHAPCX303vasMm3Dix/1jn7xecMGAXfFf2mv4iN0aA8V4gTjLj14jqbfPk2vjmX8Nqzzpok8Nru5gFmQyVNLyByAIp9MVzqmrlp07j1c/FiE6PJvuV2J20H15IjeVxzFnZh0uQ= 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=YvUIqWOS; arc=none smtp.client-ip=54.206.16.166 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="YvUIqWOS" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=airkyi.com; s=altu2504; t=1785375242; bh=HGwgkD8UDDC/KvvjZYPql/0Ajl4ttvz4Z13BCLoOB8Y=; h=From:To:Subject:Date:Message-Id; b=YvUIqWOSSn/uVHVBEAvx9EQgasWoYMCdLjJwh9S6xnGBLCAmjBpX2iLIMBmqOdiHU 9uw3eCEctczJ6kyFxbkp3kz5OXWEaEaRn+OIqOOsm56ZW0HUzo0ZLiL08p/7IYArR1 Tgqf6cuAVO9HiBHS+MpeOuubL0IsNqna2Fyv8WDY= X-QQ-mid: esmtpgz16t1785375240taa39783a X-QQ-Originating-IP: YGs2uIrkoN4Lncdxa0Oh1sKiphWaNYiOWO2tkWSHOGA= Received: from DESKTOP-8BT1A2O.localdomain ( [61.154.14.86]) by bizesmtp.qq.com (ESMTP) with id ; Thu, 30 Jul 2026 09:33:56 +0800 (CST) X-QQ-SSF: 0000000000000000000000000000000 X-QQ-GoodBg: 0 X-BIZMAIL-ID: 16287405302588008076 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 v5 0/6] drm/bridge: Implement generic USB Type-C DP HPD bridge Date: Thu, 30 Jul 2026 09:33:43 +0800 Message-Id: <20260730013349.51-1-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: OUC5DGN0mB58iumighRDyuzzZAdRbnbKB0PzmlJEceUtjwsEFAHieS24 3RtEN+Y5Pe1pf3w+8lSvOLSLihWDEVvcE1txate1hRNNtFE6gX1d4j36LF+x+rHl4lFmO7j Fu2yYziImzMLbOUbDQJO9wiVBwqqcGc8H1xCS6OzF60itXKr+Se+9E22GOzdmcL1KY3bVHQ jwaGPlDlRYr+YyLE3JbY/xXGL0OwIsQAzWuyFnTM2EGb3By6EtuhFjWFgJBuP5W93SdNeGi T0npvDzC22hQyPtgFxhuHuGWSd23HPHVCMURaNjD/ySCBrCBfjpGVXVzaR2xxoyVlaCqAQV DJHK+3cr4Guji5kvLOJfx53sL2ogKGq+KfKcq+relRYd90QkLbGmkf52gKn++uKq2//4/eq pnnI8/HsuC+bzFImz1oxjArzORWubLNURnZ4E5LdVyybcX/g7h6anOQxCeWfFT12Usdji37 7kBzZxhWhmGNNs90HMjqnkKd00MjFAEVZ0m+cpHm7xUHVRkC2geIzumW13tNlKPkltjA8tI W7TvB5z46IZjAsgH1Wc/rOh6skYhIC3SZ4LPKK+QFgrtvuArYt8JsYynQXsf9n8jcE+4UHe h2Ar+UGpoKtaEDSvUGYWQJO4MwvOB94jDqEXvp/zWvOcPI8azrEsv046c9Z7aqvlYf42mEG P1b1aSQ3TAg15Xu4JpSd8xzhTNolgIYXTzlO31yKP398HgW9Rr8cHrM1xJjoBDf003y3U5A 9a19UaMapm4nSwvc/qQvcfjLwPzHSHvJ2QksWRxyBrU9mVHk4YN+UzlAuGD9n8VLaB4wDvR G7nYmZFUfzmA317+4WyxhbyfRiPwK5iz3f2OQjG7e+tHWMHOr+6yXSnF2Hp84OCtMVy5OiM 2XwSymI8WSjYM/JkihB0i5RokEYtaqimpuziF4zLdHWA1efDqDg4ERdrkKkobrmQiIpFr74 jpBUYjZRvOGNXKHBtJxKDX5quoksp9vdv0PMuoDzAB2+r/EMeaa1djylmRpaCDOiVdO9Ixb i4Ej1swg== X-QQ-XMRINFO: OWPUhxQsoeAVwkVaQIEGSKwwgKCxK/fD5g== 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 add module soft depend for USB Type-C DP HPD bridge(Sebastian). Patch 3 adds new API drm_aux_bridge_register_from_node() (Neil). Patch 4 adds DRM AUX bridge support for RK3399 USBDP PHY (Neil). Patch 5 drops CDN-DP's extcon dependency when Type-C is present (Dmitry). Patch 6 adds multiple bridges to support PHY port selection (Dmitry, Luca). Changes in v5: - Link to v4: https://lore.kernel.org/all/20260727064408.101-1-kernel@airkyi.com/ - Add module soft depend for USB Type-C DP HPD bridge. 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 (6): drm/bridge: Implement generic USB Type-C DP HPD bridge drm/display: Add soft depend for aux-hpd-typec-dp-bridge module 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 ++++ .../gpu/drm/display/drm_display_helper_mod.c | 1 + 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 + 11 files changed, 429 insertions(+), 71 deletions(-) create mode 100644 drivers/gpu/drm/bridge/aux-hpd-typec-dp-bridge.c -- 2.53.0