From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from out198-13.us.a.mail.aliyun.com (out198-13.us.a.mail.aliyun.com [47.90.198.13]) (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 C93A63E8686; Fri, 8 May 2026 13:45:51 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=47.90.198.13 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778247954; cv=none; b=BcfYGfS8pW2dYTuL9qdrOczL5emRqEXcIKPQpJR5Q636MDVHGiNnKMiZmYxQkhyE/NkIlUZulrml77zXN5h9hqJp77shOx9PD+8M9zQj2lnePul/Jqc7y+T2iqUT9xGqBhZ80W7eRMlQfpB/BpyNsuUKCBjfkOPIdrbbkydgUrU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778247954; c=relaxed/simple; bh=8MqTignjHeZbCZK5aCA3g15x/cEHHVhoMyoT/R3Sk8w=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=kI4GDVrXiK2gvHvqVjdO25MX5Rf1yY3t6YNj01L2Q99PmaKtevut4mwi03FS2HoORZTW8SRHdnE7pOiV3eeuisis9vSbb6o4jvjYWFQ7l6vqO08JnD9RACRNK/Mq9t5xJTY/6bed+bFreT2W5xO0ywVDfcjv7Yu0QaDA+K91DGo= 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=rejfkizc; arc=none smtp.client-ip=47.90.198.13 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="rejfkizc" DKIM-Signature:v=1; a=rsa-sha256; c=relaxed/relaxed; d=lontium.com; s=default; t=1778247936; h=From:To:Subject:Date:Message-Id:MIME-Version; bh=d7Uslja1Ym7lBcVwPQge7z1MVfX8IP2xtP1NyzY5Js4=; b=rejfkizczNOPEhpgeES6RqT6ezIkeHEc3CQvUokV+wPSMrpva0+vbJPVjtPT3wHTI0WerpqTglZx8NJI8B3j93vAKNz977eAAr1Q02UetbpGvRWFk5h4kMlVcFpj8FIXbLTC9Yp3Ry7/6+kF5+7/EspqfFuFszn5DGfigle8h2hTKNxmvEeit+++DelxPIXlDA+CjVFAioHYHXa1arU9nzZav0PS6k358jbU1lwZjUpT+tsmATmJg4F8Ke2VDGbcA9GXQHpahklysb6OG+z9+ueg7UUaI7cCRrKGSfIJHEZL6vQJ6BWYmVL1/hvYkKNxe9H3AU55l6cnrkCLwwnU3A== X-Alimail-AntiSpam:AC=CONTINUE;BC=0.07496928|-1;CH=green;DM=|CONTINUE|false|;DS=CONTINUE|ham_system_inform|0.0161796-0.000456651-0.983364;FP=12562828617249967865|0|0|0|0|-1|-1|-1;HT=maildocker-contentspam033032062159;MF=syyang@lontium.com;NM=1;PH=DS;RN=22;RT=22;SR=0;TI=SMTPD_---.hSbomjM_1778247612; Received: from DESKTOP-V2MKAT2.localdomain(mailfrom:syyang@lontium.com fp:SMTPD_---.hSbomjM_1778247612 cluster:ay29) by smtp.aliyun-inc.com; Fri, 08 May 2026 21:40:14 +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 LT9611C(EX/UXD) MIPI DSI to HDMI driver Date: Fri, 8 May 2026 21:40:07 +0800 Message-Id: <20260508134009.4582-1-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 This series introduces: - A device tree binding YAML file describing the hardware - A new DRM bridge driver implementing the basic functionality LT9611C(EX/UXD) is an I2C-controlled chip that Receiver signal/dual port mipi dsi and output hdmi, differences in hardware features: - LT9611C: supports 1-port mipi dsi to hdmi 1.4 - LT9611EX: supports 2-port mipi dsi to hdmi 1.4 - LT9611UXD: supports 2-port mipi dsi to hdmi 1.4/2.0 Signed-off-by: Sunyun Yang --- Changes in v6: - dt-binding: 1. sorted the compatible list alphabetically. [Dmitry] - drm/bridge: - Link to v5: https://lore.kernel.org/lkml/20260507024214.97708-1-syyang@lontium.com/ Changes in v5: - dt-binding: - drm/bridge: 1. use #define FW_FILE "Lontium/lt9611c_fw.bin" to match linux-firmware [Dmitry] 2. add atomic state management - Link to v4: https://lore.kernel.org/lkml/20260506095100.78998-1-syyang@lontium.com/ Changes in v4: - dt-binding: 1. fix commit message [Krzysztof] - drm/bridge: 1. use lt9611c_fw.bin [Dmitry] 2. use drm_bridge::next_bridge 3. use enum lt9611_chip_type 4. remove *fw from the lt9611c struct 5. "bool hdmi_connected;" variable add comment 6. use read_poll_timeout and -ETIMEDOUT in the "lt9611c_read_write_flow" function 7. replace mutex_lock(<9611c->ocm_lock) with guard(mutex)(<9611c->ocm_lock) in some place 8. switch to ARRAY_SIZE instead of specifying lengths directly 9. use dev_err_probe 10. add clear functions for AVI and audio infoframes 11. add DRM_BRIDGE_OP_HDMI and remove .hpd_notify 12. remove the sample_rate validation code 13. fix MODULE_DESCRIPTION 14. replace "GPL v2" with "GPL" - Link to v3: https://lore.kernel.org/lkml/20260420061644.1251070-1-syyang@lontium.com/ Changes in v3: - dt-binding: 1. lt9611c(ex/uxd) content merged into lontium,lt9611.yaml - drm/bridge: 1. Drop the licence text, only use SPDX header 2. Sort the headers 3. Use library functions for crc8 4. Drop i2c_read_byte and i2c_write_byte 5. Lowercase all hex values 6. Use paged writes as implemented for LT9611C(EX/UXD) 7. Drop dev_info, use dev_dbg 8. Modify lt9611c_get_edid_block, don't store EDID in the long-term structures 9. Use HDMI audio helpers. 10. Remove unnecessary flags,Implement proper cleanup path, unwinding resources one by one. 11. Replace devm_kzalloc with devm_drm_bridge_alloc. 12. Remove extra kthread. - Link to v1: https://lore.kernel.org/lkml/20250903123825.1721443-1-syyang@lontium.com/ Changes in v2: 1. Forget modify code, operation error, Please disregard this submit. Changes in v1: - dt-binding: 1. Submit the first version of the code. - drm/bridge: 1. Submit the first version of the code. --- Sunyun Yang (2): dt-bindings: bridge: Add Lontium LT9611C(EX/UXD) MIPI DSI to HDMI driver drm/bridge: Add Lontium LT9611C(EX/UXD) MIPI DSI to HDMI driver .../display/bridge/lontium,lt9611.yaml | 8 +- drivers/gpu/drm/bridge/Kconfig | 18 + drivers/gpu/drm/bridge/Makefile | 1 + drivers/gpu/drm/bridge/lontium-lt9611c.c | 1241 +++++++++++++++++ 4 files changed, 1266 insertions(+), 2 deletions(-) create mode 100644 drivers/gpu/drm/bridge/lontium-lt9611c.c -- 2.34.1