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(unknown [61.154.14.86]) by smtp.qiye.163.com (Hmail) with ESMTP id 452ef57ae; Tue, 7 Jul 2026 12:06:21 +0800 (GMT+08:00) From: Damon Ding To: Andrzej Hajda , Neil Armstrong , Robert Foss , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Sandy Huang , =?UTF-8?q?Heiko=20St=C3=BCbner?= , Andy Yan Cc: Laurent Pinchart , Jonas Karlman , Jernej Skrabec , Luca Ceresoli , Dmitry Baryshkov , Marek Szyprowski , Sebastian Reichel , dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-rockchip@lists.infradead.org, linux-arm-kernel@lists.infradead.org, Damon Ding Subject: [PATCH v6 0/5] Add eDP lane mapping support Date: Tue, 7 Jul 2026 12:06:08 +0800 Message-Id: <20260707040613.1992841-1-damon.ding@rock-chips.com> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-HM-Tid: 0a9f3ac1689c03a8kunme8126cdf5ba9e X-HM-MType: 1 X-HM-Spam-Status: e1kfGhgUHx5ZQUpXWQgPGg8OCBgUHx5ZQUlOS1dZFg8aDwILHllBWSg2Ly tZV1koWUFITzdXWRgWCB1ZQUpXWS1ZQUlXWQ8JGhUIEh9ZQVkaGU8eVh0aHUxMHUoYThpPSlYVFA kWGhdVEwETFhoSFyQUDg9ZV1kYEgtZQVlNSlVKTk9VSk9VQ01ZV1kWGg8SFR0UWUFZT0tIVUpLSE pKQk1VSktLVUpCWQY+ DKIM-Signature: a=rsa-sha256; b=Sx33ZGqHIYEoNfsJHKkE0OINX2wBzKjkOMzYWYxUDoOGnUAK8bXZKSFOLdokRjp+4q0F0ps4pS2DhnZeLUB2STpRxFDzayv6geipaPjhlVy4gdYrA5v9Izem6bQkTTR1FwHWXdEx8bQhDJ85uxmRrklxDMIDvtoGPqrNiGT3y+I=; c=relaxed/relaxed; s=default; d=rock-chips.com; v=1; bh=vPjxRse/vdk5ypsjWtri2lfod5vl14N63wdWeNui8y0=; h=date:mime-version:subject:message-id:from; X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260706_210635_058151_AC797FE7 X-CRM114-Status: UNSURE ( 9.72 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org This series adds configurable eDP physical lane mapping support via device tree data-lanes property. Lane mapping is mainly used for below scenarios: 1. Correct PCB lane swap and differential line routing crossover without hardware changes; 2. Adapt mismatched lane pin definitions between SoC and eDP panel; 3. Support multiple panel hardware variants on the same board by configuring data-lanes in device tree only. The series includes driver implementation and device tree binding updates to support custom lane mapping configuration from endpoint node, and keeps default linear lane order if no configuration is given. Patch 1: Add endpoint data-lanes property to analogix-dp binding Patch 2: Add DRM DP helper API to validate DP lane counts Patch 3: Restore mandatory for samsung,link-rate and samsung,lane-count properties Patch 4: Add validation for samsung,lane-count property as preparation Patch 5: Implement lane mapping in analogix_dp driver Damon Ding (5): dt-bindings: display: bridge: analogix-dp: Add data-lanes support for endpoint drm/dp: Add helper to validate DP lane counts drm/bridge: analogix_dp: Restore mandatory samsung DP DT properties drm/bridge: analogix_dp: Add validation for samsung,lane-count property drm/bridge: analogix_dp: Add support for optional data-lanes mapping .../bindings/display/bridge/analogix,dp.yaml | 19 +++-- .../rockchip/rockchip,analogix-dp.yaml | 1 + .../drm/bridge/analogix/analogix_dp_core.c | 70 +++++++++++++++++-- .../drm/bridge/analogix/analogix_dp_core.h | 4 +- .../gpu/drm/bridge/analogix/analogix_dp_reg.c | 15 ++-- .../gpu/drm/bridge/analogix/analogix_dp_reg.h | 4 ++ include/drm/display/drm_dp_helper.h | 6 ++ 7 files changed, 101 insertions(+), 18 deletions(-) --- Changes in v2: - Add lane mapping application scenarios in commit message. - Remove redundant deprecated property 'data-lanes' for eDP node. - Update port@1 $ref to /schemas/graph.yaml#/$defs/port-base. Changes in v3: - Squash [PATCH v2 2/3] into [PATCH v2 1/3]. - Add unevaluatedProperties: false to both the port@1 and endpoint nodes. Changes in v4: - Add validation for samsung,lane-count property as preparation. Changes in v5: - Add DRM DP helper API to validate DP lane counts. - Apply DRM DP helper API to check the validity of samsung,lane-count property. - Add Acked-by and Reviewed-by tags. Changes in v6: - Add a seperate commit to restore mandatory samsung DP DT properties. - Add Reviewed-by tag. -- 2.34.1