From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from out28-148.mail.aliyun.com (out28-148.mail.aliyun.com [115.124.28.148]) (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 0D08F3E869A; Fri, 8 May 2026 14:02:57 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=115.124.28.148 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778248980; cv=none; b=JSRT0GYnI7KFGY5iN8qkLQk8z7SsEEsgxoUsA0Y7jlt5l93XQpSi+l2nKsnLVaEZBLkv6u+HozuBa+WCxWIZ30/TDCvzUyRMHBO2Sv/J/8XTdLjm5Al3fsvPlbEwGsECCfgwuOly9GRYfCvBtAyNDN62ogE9ro1NbXSfh00k8rw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778248980; c=relaxed/simple; bh=EHdVThZtYwy9FVFWmzPWcgDaSWT0AOQS247lpc2KIFs=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=GlH4wv1ThteRWOSTO44xbaXd+LvtkEH/53+sS/uoJpnB1lFPqneVF7DK1OmdLKqN76tsEzM8dYiuaxzxOFzPsEFDWqr0kE0bsMLnLfuw6BY1IqKQFClguTpF+NsBZaRoyAxA7yG4TU+oc34/EwhWrLoUymI+URIDd8Hzna6jfbQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=lontium.com; spf=pass smtp.mailfrom=lontium.com; dkim=pass (2048-bit key) header.d=lontium.com header.i=@lontium.com header.b=N5Hvyy2t; arc=none smtp.client-ip=115.124.28.148 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=lontium.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=lontium.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=lontium.com header.i=@lontium.com header.b="N5Hvyy2t" DKIM-Signature:v=1; a=rsa-sha256; c=relaxed/relaxed; d=lontium.com; s=default; t=1778248970; h=From:To:Subject:Date:Message-Id:MIME-Version; bh=plRzfbW8Qws5ho7KRsBfti1sG4WFDyy3YZ+bQe0Yb2U=; b=N5Hvyy2tjEVOKl0apPJmM4A8dQvI8NQlBN39fTYp0tDdKeNlhVpTCvFRwbeNKG+I2/lhh9fmyXsfamUCiX3c1wjgt8SnmzHEhTJ5l5YAe2gbDEsTnirA102pkfqxg9/3jm/hYxJ1gA7Vqd+oHiz0scI2wmzUI0BGT0b11CbG76YAZsDXbSbJunFgjqdZgw3k32ajHSGMVqJOYtl6TuKh08HvTB2qaPtVUeBGIkkJzPD8xsoPL8KOiGOgBULHjREQhbqKtK8vRy1luF03S8UISn0jba8DxprK2icJRveRX0qd8whZxf/+cRYLjO4v/bEwJxBqp4blTlMPEs5erDPYBg== X-Alimail-AntiSpam:AC=CONTINUE;BC=0.100362|-1;CH=green;DM=|CONTINUE|false|;DS=CONTINUE|ham_system_inform|0.00363759-8.50324e-05-0.996277;FP=7802761490420370552|0|0|0|0|-1|-1|-1;HT=maildocker-contentspam033037006180;MF=syyang@lontium.com;NM=1;PH=DS;RN=22;RT=22;SR=0;TI=SMTPD_---.hSic0zK_1778248029; Received: from DESKTOP-V2MKAT2.localdomain(mailfrom:syyang@lontium.com fp:SMTPD_---.hSic0zK_1778248029 cluster:ay29) by smtp.aliyun-inc.com; Fri, 08 May 2026 21:47:10 +0800 From: syyang@lontium.com To: robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, andrzej.hajda@intel.com, neil.armstrong@linaro.org, dmitry.baryshkov@oss.qualcomm.com, maarten.lankhorst@linux.intel.com, rfoss@kernel.org, mripard@kernel.org Cc: Laurent.pinchart@ideasonboard.com, tzimmermann@suse.de, jonas@kwiboo.se, jernej.skrabec@gmail.com, devicetree@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, yangsunyun1993@gmail.com, xmzhu@lontium.corp-partner.google.com, xmzhu@lontium.com, rlyu@lontium.com, xbpeng@lontium.com, Sunyun Yang Subject: [PATCH v6 0/2] Add Lontium LT7911EXC eDP to MIPI DSI bridge Date: Fri, 8 May 2026 21:47:00 +0800 Message-Id: <20260508134702.4713-1-syyang@lontium.com> X-Mailer: git-send-email 2.34.1 Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Sunyun Yang The LT7911EXC is an I2C-controlled bridge that Receiver eDP1.4 and output signal/dual port mipi dsi. This series introduces: - A device tree binding YAML file describing the hardware - A new DRM bridge driver implementing the basic functionality Signed-off-by: Sunyun Yang --- Change in v6: - dt-binding: - drm/bridge: 1. use #define FW_FILE "Lontium/lt7911exc_fw.bin" to match linux-firmware - Link to v5: https://lore.kernel.org/lkml/20260506013153.2240-1-syyang@lontium.com/ Change in v5: - dt-binding: - drm/bridge: 1. Change "mipi" to "mipi dsi" in the commit message. [Dmitry] 2. Change "eDP/MIPI" to "eDP/MIPI DSI" in Kconfig. - Link to v4: https://lore.kernel.org/lkml/20260430094612.3408174-1-syyang@lontium.com/ Change in v4: - dt-binding: 1. Fix the missing spaces on the "subject". [Krzysztof] 2. Fix the error descriptions for port@0 and port@1. - drm/bridge: - Link to v3: https://lore.kernel.org/lkml/20260429040541.3404116-1-syyang@lontium.com/ Change in v3: - dt-binding: - drm/bridge: 1. already submit lt7911exc_fw.bin to linux-firmware. [Dmitry] 2. remove lt7911exc_remove function. 3. drop the "lontium, " in lt7911exc_i2c_table. - Link to v2: https://lore.kernel.org/lkml/20260428063224.3316655-1-syyang@lontium.com/ Change in v2: - dt-binding: 1. reset pins use active low. [Dmitry] - drm/bridge: 1. use atomic_* callbacks. [Quentin] 2. fix the incorrect formatting and spaces. 3. add the required header files. [Dmitry] 4. remove "enabled" flag. 5. remove *fw from the lt7911exc struct. 6. .max_register and .range_max use actual range. 7. regulator use bulk interface. 8. use dev_err_probe, devm_mutex_init and devm_drm_bridge_add. 9. Replace GPL v2 with GPL. - Link to v1: https://lore.kernel.org/lkml/20260420023354.1192642-1-syyang@lontium.com/ --- Sunyun Yang (2): dt-bindings: bridge: Add Lontium LT7911EXC eDP to MIPI DSI bridge drm/bridge: Add Lontium LT7911EXC eDP to MIPI DSI bridge .../display/bridge/lontium,lt7911exc.yaml | 89 ++++ drivers/gpu/drm/bridge/Kconfig | 13 + drivers/gpu/drm/bridge/Makefile | 1 + drivers/gpu/drm/bridge/lontium-lt7911exc.c | 493 ++++++++++++++++++ 4 files changed, 596 insertions(+) create mode 100644 Documentation/devicetree/bindings/display/bridge/lontium,lt7911exc.yaml create mode 100644 drivers/gpu/drm/bridge/lontium-lt7911exc.c -- 2.34.1