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[103.229.18.19]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-2be002ee839sm8823286eec.8.2026.03.03.08.43.46 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 03 Mar 2026 08:43:52 -0800 (PST) From: Vishnu Saini Subject: [PATCH v5 0/2] Add lontium lt8713sx bridge driver Date: Tue, 03 Mar 2026 22:13:34 +0530 Message-Id: <20260303-lt8713sx-bridge-driver-v5-0-6cc2a855aafa@oss.qualcomm.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-B4-Tracking: v=1; b=H4sIALYPp2kC/4XPzYoCMQwH8FeRnrfSpM1Mx9O+h3jo16wFddxWi yLz7tsRFj1s2Uvgn5BfyIPlkGLIbLN6sBRKzHE61UAfK+b25vQVePQ1MxRIAED8cNE9yHzjNkV fxz7FEhKX2AuliKwbDKvL5xTGeHvC213N+5gvU7o/7xRYuv+SBbjg1pMBB66XwnxOOa+/r+bgp uNxXQtb5ILvmm5qWDUk49WAWhiAhiZfGmJbk1UboBtGG0YRyDY09at1AlE1NbV8Sp2QIynSXv+ hzfP8A9QJ2witAQAA X-Change-ID: 20251115-lt8713sx-bridge-driver-32704455bc9a To: Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Tony Cc: dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Vishnu Saini , prahlad.valluru@oss.qualcomm.com, Prahlad Valluru , Krzysztof Kozlowski , Simon Zhu , Dmitry Baryshkov X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=ed25519-sha256; t=1772556225; l=2252; i=vishnu.saini@oss.qualcomm.com; s=20251113; h=from:subject:message-id; bh=0luLqj0bA9HqriWeMlInhLYgC8atn2e/7AMYtJLxTo0=; b=A+VBgVZVipLftaWUhKTWxZyB/s94eLe9qv+M+zYLKr4mnWoC9/yDpNa4hnvdWT94LICh+Vr/7 g1mC+O1NbWeDFmjUkFonV5AoZVsDvTtFmJKNUKRo+d7w3bsQX/b0IpF X-Developer-Key: i=vishnu.saini@oss.qualcomm.com; a=ed25519; pk=8hlXlF8j/3GeOaDK3w2LYhkv9FanCQru0c7kRH/It7k= X-Proofpoint-ORIG-GUID: h0PoVfmHE4uLqcRXpQnolDHkm9FtXjBt X-Authority-Analysis: v=2.4 cv=dfmNHHXe c=1 sm=1 tr=0 ts=69a70fcb cx=c_pps a=bS7HVuBVfinNPG3f6cIo3Q==:117 a=Ou0eQOY4+eZoSc0qltEV5Q==:17 a=IkcTkHD0fZMA:10 a=Yq5XynenixoA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=Um2Pa8k9VHT-vaBCBUpS:22 a=VwQbUJbxAAAA:8 a=EUspDBNiAAAA:8 a=QNFiEYH7FFPh0Mko9SYA:9 a=QEXdDO2ut3YA:10 a=vBUdepa8ALXHeOFLBtFW:22 X-Proofpoint-GUID: h0PoVfmHE4uLqcRXpQnolDHkm9FtXjBt X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMzAzMDEzMyBTYWx0ZWRfX+XCQ0vwqvw8F f36jK8hsB7qDpoCQgfLDfioEkYkvIhvgUN92aPzT3YFBqi0HDAMsEeEeGt66Fwi3W5slBAgcC8W 8wmpx8TZoF3tk24FvUeBRsG7Uyin7QRS/Ccop+8xkmWnjzhhkSrkx8cgsaYCcjHDID9bRBsEqvw 1N+cxX4NujuvVpDCT/jmzrpGX/dOvUyVZFJqG9KMcClcLiIKdAhe5Ae2Om3hXr7/kNAsJcTYWaB 96tMsZ0TJ0yJ9VRcBnfovG7OX9P2npKPzkN8anSC/JAIDFNpKOO4wU7Mzep4sUPSltLH1jG72Lo x5yIJ7oR1m+nyFKx0NMsyU6KqqZB/cka2S+bnJeG4KRfm4KK4mCJ3XPMJCLVMxVPh8CYgzDhCnM T5gpaps4ISPlNDZJPtep+M4z473M7JpS36++7W1Tw0snR3Dv4f4RKEUMV46A8F1CJnguqdaJUxN FfZEwmItY41vw+vVwlw== X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-03-03_02,2026-03-03_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 bulkscore=0 impostorscore=0 phishscore=0 clxscore=1015 spamscore=0 adultscore=0 suspectscore=0 lowpriorityscore=0 priorityscore=1501 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2602130000 definitions=main-2603030133 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" The lt8713sx is a Type-C/DP1.4 to Type-C/DP1.4/HDMI2.0 converter, with three configurable DP1.4/HDMI2.0/DP++ output interfaces and audio output interface. This series provides bridge driver and dt bindings for lt8713sx. The driver is required for firmware upgrade and enabling the bridge chip. Signed-off-by: Vishnu Saini --- Changes in v5: - Commit msg changed a bit - Added Author Maintainer after confirmation from Lontium - Link to v4: https://lore.kernel.org/r/20260224-lt8713sx-bridge-driver-v4-0-b5603f5458d8@oss.qualcomm.com Changes in v4: - Improved crc calculation, calculated on padded buffer instead of bit by bit. - Fixed brm bridge chain, using single drm_bridge as bridge chip itself will take care of providing all edp outputs from single input. - Used guard mutex where needed. - Link to v3: https://lore.kernel.org/r/20251228-lt8713sx-bridge-driver-v3-0-9169fbef0e5b@oss.qualcomm.com Changes in v3: - Used linux/sizes.h header for size definations. - Used linux/crc8.h for CRC calculation - Added Basic drm_bridge changes to support corresponding ports handeling in dt - Ran coccinelle, smatch and sparse checkpatch.pl tools to improve code quality. - Link to v2: https://lore.kernel.org/r/20251118-lt8713sx-bridge-driver-v2-0-25ad49280a11@oss.qualcomm.com Changes in v2: - Addressed review comments from V1, majorly: - Fixed DCO chain. - Added supply in bindings. - Handeled deferred probe in lt8713sx driver probe. - Link to v1: https://lore.kernel.org/r/20251115-lt8713sx-bridge-driver-v1-0-bd5a1c1c730a@oss.qualcomm.com --- Vishnu Saini (2): dt-bindings: bridge: lt8713sx: Add bindings drm/bridge: add support for lontium lt8713sx bridge driver .../bindings/display/bridge/lontium,lt8713sx.yaml | 113 ++++ drivers/gpu/drm/bridge/Kconfig | 10 + drivers/gpu/drm/bridge/Makefile | 1 + drivers/gpu/drm/bridge/lontium-lt8713sx.c | 598 +++++++++++++++++++++ 4 files changed, 722 insertions(+) --- base-commit: de0d6e19d2ef33ba34be2467ffdf3595da5f5326 change-id: 20251115-lt8713sx-bridge-driver-32704455bc9a Best regards, -- Vishnu Saini