From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 4351BC531D0 for ; Mon, 27 Jul 2026 06:45:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Message-Id:Date:Subject:Cc: To:From:Reply-To:MIME-Version:Content-Type:Content-Transfer-Encoding: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Owner; bh=tUuZrKapaqrR58DBEzt7pydUceq7VRn6Enn+YN7nDOc=; b=11wdxuTCXgxDjli/3v6xzkVd+d oSRKMKahMAZYzewXVZ1M7aW5DNNQSztuOSSF11mYFIYq9af+6HmGaBLobT/ZuszEftWqCECR6Ezha 2T2X9nZ9FbsRh6vsg/0myIupt4ABcehIA1JyKpRgw7mX0KM1ajvyfpFutBIMzmrtif3q/mZkzry5k Ju4Ni8z2bT4CYJjReKnf/I8d44e3KgTF6ssDDqUTxBW4zu+CvRoPT2CnZQyo8l76YPQ9kkrIzveNN tGAwA6ShlHyv5d8q1np3j6lJaBo0VtW53qtIJvsuMKGLj14QE0QkhXKiB+TMLH5k2PSPTcP1uK/ol gWd8Uvow==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1woF5b-000000022z7-29FJ; Mon, 27 Jul 2026 06:45:27 +0000 Received: from smtpbgeu2.qq.com ([18.194.254.142]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1woF5U-000000022tK-0jEi; Mon, 27 Jul 2026 06:45:25 +0000 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: Nzm/ywkHpQhPr4Y0xt0KaJ0+Syayq5JweL0Q7lawsuzfCxdAzMCuQEha GchHzEaYR8erdBqnNxl2dhXMrOeRNo5NVMYgeDG4lfnRc/BncxlzIz0zU2qo9WjfpZskWkX 8vvU6gdCvHB7982Qp6pxcHe9pElEbV93bAqa/d4a06LP6M3p50mB94y+4+xhJSwtoZ0fw2Y qpY9wC6xZXO4cMs75dcJh0IZ+zR4LKuL4np8r+dalcsjqa6silcyA2pqQXXmoJr7QBjSAGh dg3Bb/j/wFL3YjIxEGH07OhE5Z8aGwRsHDIIXMLJF9Wub9YadhGyClyv3cV/qlABxWOsW2A DRGC0EcxtQIsb3599ekvCVtLC1b8EcAN+uRLd1XMlRI0vnBe0E2FUThWofG1oixp+X6FLhw UUbQjRoz8BV1pcUvcfUacnkiG9HfqusfxhD4B9YD0mAn3PQ+y9o9onRssP982EfUMQ63Y+B jet+KZZm4GYwcWWPRxcaRdwaRpAh515lDV4DQ9NkAstB732Prwvik5kjxhAgTSnIJII/YDc HQrMhucJafPMbqUeF0NRBdM7BR19efHQtOFKViK0w03smAA15iLbsVajCr19ZieOR1L9kXB qWWW+i0ZWZWWLBzwSoxIX5+L3ATe0m8eznPrXBE3AArEGIOc18AIniE18uCVHCTP973yaWy dN5f//8qeOUF0/d1gJpP54EtRRu/RoXfahUmiW1auT0n9zz4aByQEayXgIKxR+UQqdfBzkX j2G+M37SMm1CbTiHbSznKu8iOKL3LPPXvTJAtzcHh6n64OZK+LsY8LkdCuFBWIvu1cHeQHf X744UnSW0iSh/nbfXeyjLUeXX6bqlUc07zF0PuHSQLhydUBPv7L+q5LB2wtp0OH4F0gL712 YMhazt5nnTcuDEy2hv4asvNtpNyOEXwGc38rvf48ItkGH4nx5vJJIwoSufb/3sE2KC7QyCB xm4asoQ4y5jqaYekq0qNy7p8g4szG4cD6+oD+tnJdvKAEzGvnpUSBeBxMM+fdmWHK+vw= X-QQ-XMRINFO: NS+P29fieYNwqS3WCnRCOn9D1NpZuCnCRA== X-QQ-RECHKSPAM: 0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260726_234520_775314_03B3C4CC X-CRM114-Status: GOOD ( 11.24 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org 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