kernel/Documentation/devicetree/bindings/display/msm/dp-controller.yaml, branch linux-rolling-stable

dt-bindings: display: msm: Fix reg ranges and clocks on Glymur

2026-03-19T15:15:26Z

commit 7403e87c138475a74e5176176778f391d847f42d upstream. The Glymur platform has four DisplayPort controllers. The hardware supports four streams (MST) per controller. However, on Glymur the first three controllers only have two streams wired to the display subsystem, while the fourth controller operates in single-stream mode. Add a dedicated clause for the Glymur compatible to require the register ranges for all four stream blocks, while allowing either one pixel clock (for the single-stream controller) or two pixel clocks (for the remaining controllers). Update the Glymur MDSS schema example by adding the missing p2, p3, mst2link and mst3link register blocks. Without these, the bindings validation fails. Also replace the made-up register addresses with the actual addresses from the first controller to match the SoC devicetree description. Cc: stable@vger.kernel.org # v6.19 Fixes: 8f63bf908213 ("dt-bindings: display: msm: Document the Glymur DiplayPort controller") Fixes: 1aee577bbc60 ("dt-bindings: display: msm: Document the Glymur Mobile Display SubSystem") Signed-off-by: Abel Vesa Reviewed-by: Krzysztof Kozlowski Patchwork: https://patchwork.freedesktop.org/patch/708518/ Link: https://lore.kernel.org/r/20260303-glymur-fix-dp-bindings-reg-clocks-v4-1-1ebd9c7c2cee@oss.qualcomm.com Signed-off-by: Dmitry Baryshkov Signed-off-by: Greg Kroah-Hartman

dt-bindings: display/msm: dp-controller: Add SM6150

2025-11-14T14:59:27Z

Add DisplayPort controller binding for Qualcomm SM6150 SoC. SM6150 uses the same controller IP as SM8150. Declare 'qcom,sm6150-dp' as a fallback compatible to 'qcom,sm8150-dp' and 'qcom,sm8350-dp' for consistency with existing bindings and to ensure correct matching and future clarity. Signed-off-by: Xiangxu Yin Acked-by: Rob Herring (Arm) Patchwork: https://patchwork.freedesktop.org/patch/674893/ Link: https://lore.kernel.org/r/20250916-add-dp-controller-support-for-sm6150-v3-1-dd60ebbd101e@oss.qualcomm.com Signed-off-by: Dmitry Baryshkov

dt-bindings: display/msm: dp-controller: document QCS8300 compatible

2025-11-14T14:59:27Z

Add compatible string for the DisplayPort controller found on the Qualcomm QCS8300 SoC. The Qualcomm QCS8300 platform comes with one DisplayPort controller that supports 4 MST streams, similar to the one found on the SA8775P. Reviewed-by: Krzysztof Kozlowski Signed-off-by: Yongxing Mou Patchwork: https://patchwork.freedesktop.org/patch/684200/ Link: https://lore.kernel.org/r/20251029-qcs8300_mdss-v13-2-e8c8c4f82da2@oss.qualcomm.com Signed-off-by: Dmitry Baryshkov

dt-bindings: display: msm: Document the Glymur DiplayPort controller

2025-11-14T14:59:27Z

Document the DisplayPort controller found in the Qualcomm Glymur SoC. There are 4 controllers and their new core revision is different when compared to all previous platforms, therefore being incompatible. Reviewed-by: Krzysztof Kozlowski Signed-off-by: Abel Vesa Patchwork: https://patchwork.freedesktop.org/patch/683717/ Link: https://lore.kernel.org/r/20251027-glymur-display-v3-3-aa13055818ac@linaro.org Signed-off-by: Dmitry Baryshkov

dt-bindings: display/msm: Reference DAI schema for DAI properties

2025-11-14T14:59:27Z

DisplayPort nodes are DAIs (Digital Audio Interfaces): they have already 'sound-dai-cells'. Reference the common DAI schema to bring common properties for them, which allows also customizing DAI name prefix. Signed-off-by: Krzysztof Kozlowski Acked-by: Rob Herring (Arm) Reviewed-by: Bjorn Andersson Patchwork: https://patchwork.freedesktop.org/patch/682376/ Link: https://lore.kernel.org/r/20251021111050.28554-3-krzysztof.kozlowski@linaro.org Signed-off-by: Dmitry Baryshkov

dt-bindings: display/msm: expand to support MST

2025-09-03T23:20:49Z

On a vast majority of Qualcomm chipsets DisplayPort controller can support several MST streams (up to 4x). To support MST these chipsets use up to 4 stream pixel clocks for the DisplayPort controller and several extra register regions. Expand corresponding region and clock bindings for these platforms and fix example schema files to follow updated bindings. Note: On chipsets that support MST, the number of streams supported can vary between controllers. For example, SA8775P supports 4 MST streams on mdss_dp0 but only 2 streams on mdss_dp1. Signed-off-by: Abhinav Kumar Signed-off-by: Jessica Zhang Signed-off-by: Dmitry Baryshkov Reviewed-by: Rob Herring (Arm) Patchwork: https://patchwork.freedesktop.org/patch/672585/ Link: https://lore.kernel.org/r/20250903-dp_mst_bindings-v8-7-7526f0311eaa@oss.qualcomm.com

dt-bindings: display/msm: drop assigned-clock-parents for dp controller

2025-09-03T23:20:49Z

DP controller schema documents assigned-clocks and assigned-clock-parents. However these assignments should not be a part of the ABI: there are no actual requirements on the order of the assignments, MST cases require different number of clocks to be assigned, etc. Instead of fixing up the documentation, drop the assigned-clock-parents and assigned-clocks from the bindings. The generic clock/clock.yaml already covers these properties. Suggested-by: Krzysztof Kozlowski Signed-off-by: Abhinav Kumar Signed-off-by: Jessica Zhang Acked-by: Rob Herring (Arm) Signed-off-by: Dmitry Baryshkov Patchwork: https://patchwork.freedesktop.org/patch/672586/ Link: https://lore.kernel.org/r/20250903-dp_mst_bindings-v8-6-7526f0311eaa@oss.qualcomm.com

dt-bindings: display/msm: dp-controller: add X1E80100

2025-09-03T23:20:49Z

Add X1E80100 to the dp-controller bindings, it has DisplayPort controller similar to other platforms, but it uses its own compatible string. Signed-off-by: Abhinav Kumar Signed-off-by: Jessica Zhang Acked-by: Rob Herring (Arm) Signed-off-by: Dmitry Baryshkov Patchwork: https://patchwork.freedesktop.org/patch/672578/ Link: https://lore.kernel.org/r/20250903-dp_mst_bindings-v8-5-7526f0311eaa@oss.qualcomm.com

dt-bindings: display/msm: dp-controller: document DP on SM7150

2025-09-03T23:20:49Z

The qcom,sm7150-dp compatible is documented in schema. Mark DisplayPort controller as compatible with SM8350. Fixes: 726eded12dd7 ("dt-bindings: display/msm: Add SM7150 MDSS") Signed-off-by: Dmitry Baryshkov Acked-by: Rob Herring (Arm) Patchwork: https://patchwork.freedesktop.org/patch/672572/ Link: https://lore.kernel.org/r/20250903-dp_mst_bindings-v8-3-7526f0311eaa@oss.qualcomm.com

dt-bindings: display/msm: dp-controller: fix fallback for SM6350

2025-09-03T23:20:49Z

Currently SM6350 uses qcom,sm8350-dp as a fallback compatible entry. This works, but adding DP MST support will reveal that this SoC is not fully compatible with SM8350 platform: the former one doesn't provide MST support, while the latter one will get it. DT schema for SM8350 is going to demand MST-related clocks which SM6350 doesn't provide. Add new entry for SM6350 with fallback to SC7180 (which belongs to the same generation and also doesn't have MST support). SC7180 has been supported by the Linux kernel long ago (and long before SM8350 support was added). Fixes: 39086151593a ("dt-bindings: display: msm: dp-controller: document SM6350 compatible") Signed-off-by: Dmitry Baryshkov Acked-by: Rob Herring (Arm) Patchwork: https://patchwork.freedesktop.org/patch/672571/ Link: https://lore.kernel.org/r/20250903-dp_mst_bindings-v8-2-7526f0311eaa@oss.qualcomm.com