[PATCH v4 0/3] Add support for the Samsung S6E8FCO DSI and M1906F9 display panel

Yedaya Katsman
2026-03-14T21:46:28Z

This adds a driver to support the Samsung S6E8FCO DSI controller with the
M1906F9 display panel found in Xiaomi Mi A3 (xiaomi-laurel). The driver is
generated using linux-mdss-dsi-panel-driver-generator[0].

The mdss reset dependency makes the screen work more reliably.

[0]: https://github.com/msm8916-mainline/linux-mdss-dsi-panel-driver-generator
Original tree with patches: https://gitlab.postmarketos.org/SzczurekYT/linux/-/tree/laurel

Signed-off-by: Yedaya Katsman <yedaya.ka@gmail.com>
---
Changes in v4:
- Use exisiting binding instead of creating a new one
- Mention dsi phy power source in commit message
- Mention only DSI controller, not panel where it makes sense
- Remove VIDEOMODE_HELPERS selection
- Collect trailers
- Link to v3: https://lore.kernel.org/r/20260312-panel-patches-v3-0-6ed8c006d0be@gmail.com

Changes in v3:
- Make driver, bindings, compatible specific to M1906F9 panel
- Adjust brightness scale and default
- de-mystify some dsi writes
- move pinctrl for mdss into panel node
- Rename regulator nodes and names according to schematic
- Treat vreg_l9a as input to vddi regulator
- Add myself to copyright header, remove years
- Link to v2: https://lore.kernel.org/r/20260223-panel-patches-v2-0-1b6ad471d540@gmail.com

Changes in v2:
- Changed commit title like Dmitry asked
- Fixed copyright header years
- Link to v1: https://lore.kernel.org/r/20260223-panel-patches-v1-0-7756209477f9@gmail.com

---
Yedaya Katsman (3):
dt-bindings: display: panel: Add Samsung S6E8FCO-M1906F9
drm: panel: Add Samsung S6E8FCO DSI controller for M1906F9 panel
arm64: dts: qcom: sm6125-xiaomi-laurel-sprout: Enable MDSS and add panel

.../panel/samsung,s6e8aa5x01-ams561ra01.yaml | 5 +-
MAINTAINERS | 5 +
.../boot/dts/qcom/sm6125-xiaomi-laurel-sprout.dts | 94 +++++++
drivers/gpu/drm/panel/Kconfig | 13 +
drivers/gpu/drm/panel/Makefile | 1 +
.../gpu/drm/panel/panel-samsung-s6e8fco-m1906f9.c | 301 +++++++++++++++++++++
6 files changed, 418 insertions(+), 1 deletion(-)
---
base-commit: d4906ae14a5f136ceb671bb14cedbf13fa560da6
change-id: 20260218-panel-patches-696df7e0d810
prerequisite-message-id: <20260303034847.13870-1-val@packett.cool>
prerequisite-patch-id: 3fba84f11111406e0d530013fd45ad0eb389786b
prerequisite-patch-id: 81440b7f28f9101d3dc5d4bad6dc86e39b81a026
prerequisite-patch-id: 53469d8c9810169d058f1bfd27ac8399038aae74
prerequisite-patch-id: 80809bee71eb6434f6699d5e5f8c7f9d4bcd1ca7
prerequisite-patch-id: 0269e01c9c54a37bb92983635cd516342189aee5
prerequisite-patch-id: e2bbf7c452d4da6d71b1a5194e0d7ce46584e113

Best regards,
--
Yedaya Katsman <yedaya.ka@gmail.com>