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 DCCC2C53200 for ; Thu, 30 Jul 2026 01:35:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:List-Subscribe:List-Help: List-Post:List-Archive:List-Unsubscribe:List-Id:Message-Id:Date:Subject:Cc:To :From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=SkaEv+B3qdyMEiIVbbTYh/P7kfvBpdisKbHE7qOcDpU=; b=tZ4UE19T6PkVx/ 1lSp4hDt4KD5DzsIaZq95TIm/B6UfGy5iKz6qN+8tqtb6jbvZ+1Nq0lqUaf8u7uxiQ8NX0DqsSaZV D8dK31rYmvEbA+fv8HF1OYks5Exre+j+wF+fsnmFqGUWAtaipjUqVUJIqsO0ds4QpkEYOD8e0/mxl 00BzO3rdm6DnADY7b07jgSt+1IJ6Nhqmz5Tu1k901f1RPhB4hFzXJoOrXyYEWUTm+LXZaUd2m/VJ5 2SJkQwBI00QxQB6Xv8I4FFHNZNVgVzYC2gCZbo3JOcx3IbEsWbLuVTmgY+NNvhYej6c0pvggPjaKv biytrxVPAo2bVulq+8tg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wpFfr-00000009GNF-0ukI; Thu, 30 Jul 2026 01:35:03 +0000 Received: from smtpbg150.qq.com ([18.132.163.193]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1wpFfn-00000009GJS-2i1c; Thu, 30 Jul 2026 01:35:02 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=airkyi.com; s=altu2504; t=1785375243; bh=HGwgkD8UDDC/KvvjZYPql/0Ajl4ttvz4Z13BCLoOB8Y=; h=From:To:Subject:Date:Message-Id; b=AJX3MZY+tJ734Afe7rme/XY9iIJIPYhAByc1QkTS0fWqU+p+iIChIIqapjsBf5qez ABKVlrjCNEmaKG4WKAdgRwN6dXiZUBbUbggOJUfIvhwUPgSQXoLC4wmoJkiU2ENeu1 kR7tnf4hCUZ3V/4gFLiKItz0pvnS0fu7LvJg0mS4= 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: MACXe2l6e7j9fOLui6QNBT7mkm/GJTwT6ImJafccB1It2StDppDCC7R2 KvPtPEqbzJ64Md2GOwZaFGk7Qb3oskgHw4fwEusZZGPh+0+6/n15WANQql4Y/IqBLe3aPXU YnDEvZnJyTEFGPSgm11ttp4/vXtxtMH0t5ZUibzsAtyTRa+M4WBN+0JOyUWBVSMDfB/tGSr VxEbNLNdl+sjfxZ0UmEtG+y12HQ5rubBME3YYIFRPicg5Njt6QGdMx0eqPl8CZM5Fv/7VhN ueZ6HZIGmB2KhNesTcC0OPjN3ar8MuDd3+UAJ61RI3TURRGWXkhQr1HBneHi+Jus9aGxK8O 2zKquDqtvNAQC7ICv88zORA6DBxpmHxBl7y/AL3LDLqAG9TKV3xGE5cMLjxWQXJswvCew4K NN28Os4DmMtOUCMa8S2Lir9357s7OBRZ/Zafew0UPR8r405peRDvuhGc8QCixVw44IlSTla rekmnrRWf9J/4nZanZD8S6ZJ+KR0e8B06kAXA1pmkUWlKMhVItHwV7krXhTTwzs660DrW9u wmPPmLiOIfiQ4IHJ0cAxi9o+yvBJWBAAC56fuuolwpY5+jraiG1STr6lYNzswJ2zw1yNPAG KWfzTTn2YPBg1bH3uumVTQ/48bR+NOrA5YQoLdSW7R8iqOhtVCaPLG/hbsDU/XFKgJS8exa MeOQ4dGOWzNf9SlcBp8IxsS4djsFrX6VJivXLvMWrg/kA0Ow2tsTjUYM+ZQCcKkN5JO2Ug4 cTSPSVPiuImESVfF5rZH/drk/hfwHpPAVnd+htb3vvlBch44h+7pcO4EQU540r22bm/xTL5 wrrGZjrKSjyoUn3qv0Y/CxHX/R0ibmMrk8KrievvUbKpu9qKJvhCOlB7pGzBsiLY9oQjVAS A1RB7TO9vczAgbPoKVq75+h8Dw9JxpYa3jHTQtRXsvGQVic/KjYugvk76uF1zaCUmim5vvD H4zEKW6xygAV185B/qD6hykx9hGD8qqf031wuwX40qR6XYzOr0v7YftLJv7kq66o2o9yjNY 7Tx6e6nQ== X-QQ-XMRINFO: MSVp+SPm3vtSI1QTLgDHQqIV1w2oNKDqfg== X-QQ-RECHKSPAM: 0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260729_183500_211334_8688FCB4 X-CRM114-Status: GOOD ( 11.35 ) X-BeenThere: linux-phy@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux Phy Mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-phy" Errors-To: linux-phy-bounces+linux-phy=archiver.kernel.org@lists.infradead.org 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 -- linux-phy mailing list linux-phy@lists.infradead.org https://lists.infradead.org/mailman/listinfo/linux-phy