From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from out198-5.us.a.mail.aliyun.com (out198-5.us.a.mail.aliyun.com [47.90.198.5]) (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 D0BE9261B70; Thu, 7 May 2026 02:42:32 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=47.90.198.5 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778121755; cv=none; b=ZHbcZCAwCBbt1Yy7qWUwHXb61LSeUKUElbj1EB0hj/TBoaDwfIpQ7LIgm9Cf0rPl64sFKSz/HVC73nEsx6mwp+eyXP6Jv/OkiAUBUw3bIqIqrQ348Q4tJ4uQQLu/QCkXD6plxBf711LXggY64f8yiu9G6Aikt355C6G0XHiSuA0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778121755; c=relaxed/simple; bh=b0i0pglpxPH1i6VZDklXDzAwqZGQrH0BVUJmcLdueFc=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=LnYss7vVtJ1HvK9VHtnNz8dU2Am99bR7vUJ/EwPnSNeJVv76O6439Bc/AUUqi5QTwZfM8GPv3Cs6+wSVtq7Q0wJKbafjmt7ZH+cLhlov8xoMfnvqmfKuqAkQ5Ubw7njVMBF/nEYosmxL/Ih7Fs15WUJX9dF46VzOC/XiF9kwN2g= 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=qc7vCbsn; arc=none smtp.client-ip=47.90.198.5 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="qc7vCbsn" DKIM-Signature:v=1; a=rsa-sha256; c=relaxed/relaxed; d=lontium.com; s=default; t=1778121740; h=From:To:Subject:Date:Message-Id:MIME-Version; bh=cSJ9jnrnvZGTNSbO4jVs1jcndSnMw3BS+1A9Y46+N8M=; b=qc7vCbsn7ykxrJKaMLzH4X1ymxaZaLcHm+nZh+EHtHLUE9/P8Iv0ZmXni6rLPNlSSmBEfa7cubMuGcD82r8RUE9eTPRxWZwhssA+USXOj+IhdCmpJ5ptt+JHhtZ/XX3ETJcMRoTH2NtUK8bQIciiMa30Zq1Rh69ew9XB4TGQ+ysJClM4a+Fr0VpkEhNxN+DPeltuAVO82ecfJ0mpo5ZOyj7UaMW0aBwtz8ped+pEOeGnrzY3O12PYfLq1QXK89Xm/g4JWz+RHfsIeOwwaKSeILgiFoevXVikfR4IYqFZOAN2idEX59HORKqllLVBlpkYkCD+WdLAonog4YNgVP23lw== X-Alimail-AntiSpam:AC=CONTINUE;BC=0.07550596|-1;CH=green;DM=|CONTINUE|false|;DS=CONTINUE|ham_system_inform|0.0201271-0.000526132-0.979347;FP=12562846209438109432|0|0|0|0|-1|-1|-1;HT=maildocker-contentspam033037022039;MF=syyang@lontium.com;NM=1;PH=DS;RN=22;RT=22;SR=0;TI=SMTPD_---.hRAhTVc_1778121737; Received: from DESKTOP-V2MKAT2.localdomain(mailfrom:syyang@lontium.com fp:SMTPD_---.hRAhTVc_1778121737 cluster:ay29) by smtp.aliyun-inc.com; Thu, 07 May 2026 10:42:18 +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 v5 0/2] Add Lontium LT9611C(EX/UXD) MIPI DSI to HDMI driver Date: Thu, 7 May 2026 10:42:12 +0800 Message-Id: <20260507024214.97708-1-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 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 | 1240 +++++++++++++++++ 4 files changed, 1265 insertions(+), 2 deletions(-) create mode 100644 drivers/gpu/drm/bridge/lontium-lt9611c.c -- 2.34.1