This series adds DSI support for MediaTek MT8365 and MT8366 based
boards, such as the Genio 350 and the Genio 360 EVKs, in order to
display a boot logo on a DSI panel. It builds on top of the following
series, all sent earlier:
- the Genio 360 EVK bring-up [1],
- the MediaTek clock cleanups [2] and the MT8365 multimedia clock
driver [3],
- the MT8365 power domain support [4],
- the MIPI DSI PHY driver [5],
- the mipi_dsi write_seq helper macros [6] and the startek
kd070fhfid015 panel driver [7],
- the display component helpers introduced by the MT8188 HDMI
series [8].
As in the HDMI series, the drivers here were inspired by the
corresponding kernel drivers but were largely trimmed down: U-Boot has
no DRM framework and the goal is only to scan out a framebuffer. The DSI
driver locates the pipeline components through the device-tree aliases
the SoC dtsi already provides, the mutex, which has no alias on the
MT8365, through its driver, and the mmsys through the DSI digital clock,
and programs them directly.
The video pipeline looks like this:
video uclass framebuffer (in DRAM)
|
v
ovl0 overlay, the DMA master
| reading the framebuffer
v
rdma0 pass-through, no DRAM access
|
+--------------+--------------+
| |
v |
color0 | MT8365 only: the colour
| | pipeline, every block
v | programmed as pass-through
ccorr0 |
| |
v |
aal0 |
| |
v |
gamma0 |
| |
v |
dither0 |
| |
+--------------+--------------+
v
dsi0 DSI host, and video mode timing
| generator once the panel is up
v
mipi d-phy
|
v
dsi panel ---> backlight
mutex0 : hardware SOF synchronization across the pipeline
mmsys : routing muxes (MOUT/SEL_IN/SOUT) between the blocks above
larb0 : SMI local arbiter gating the overlay's access to DRAM
The MT8366 drives the panel straight out of rdma0, without the colour
pipeline, which the per-compatible driver data selects.
The series adds the smi_common support and the larb port control to the
SMI driver, the pipeline components (overlay, rdma and the colour
blocks), the mmsys routing and the mutex glue, the DSI host itself
(UCLASS_VIDEO), and the configs enabling the pipeline on the Genio 350
and Genio 360 EVKs.
[1]:
https://lore.kernel.org/u-boot/[email protected]/
[2]:
https://lore.kernel.org/u-boot/[email protected]/
[3]:
https://lore.kernel.org/u-boot/20260925-mt8365-add-mulimedia-clock-driver-v1-1-5fbb0305e...@baylibre.com/
[4]:
https://lore.kernel.org/u-boot/[email protected]/
[5]:
https://lore.kernel.org/u-boot/20260915-mt8365-add-phy-mtk-mipi-dsi-driver-v1-0-83707ed52...@baylibre.com/
[6]:
https://lore.kernel.org/u-boot/20260806-add_mipi_dsi_write_seq_helper_macros-v1-0-6b533788d...@baylibre.com/
[7]:
https://lore.kernel.org/u-boot/20260819-add-panel-startek-kd070fhfid015-v2-1-0bdb6c682...@baylibre.com/
[8]:
https://lore.kernel.org/u-boot/20260925-add-genio-510-and-genio-700-hdmi-v6-0-29e626b21...@baylibre.com/
Signed-off-by: Julien Stephan <[email protected]>
---
Julien Stephan (13):
memory: mediatek: mtk-smi: support smi_common and the larb ports
video: mediatek: add ovl component
video: mediatek: add disp rdma component
video: mediatek: add color component
video: mediatek: add ccorr component
video: mediatek: add aal component
video: mediatek: add gamma component
video: mediatek: add dither component
video: mediatek: add ddp component
video: mediatek: mtk_disp_mutex: add the DSI pipeline
video: mediatek: add dsi driver
configs: mediatek: mt8365_evk: enable dsi pipeline
configs: mediatek: mt8366_genio_360_evk: enable dsi pipeline
configs/mt8365_evk_defconfig | 8 +
configs/mt8366_genio_360_evk_defconfig | 7 +
drivers/memory/Kconfig | 1 +
drivers/memory/mtk-smi.c | 223 +++++-
drivers/video/mediatek/Kconfig | 32 +
drivers/video/mediatek/Makefile | 19 +-
drivers/video/mediatek/mtk_ddp.c | 130 ++++
drivers/video/mediatek/mtk_ddp.h | 22 +
drivers/video/mediatek/mtk_disp_aal.c | 54 ++
drivers/video/mediatek/mtk_disp_aal.h | 31 +
drivers/video/mediatek/mtk_disp_ccorr.c | 55 ++
drivers/video/mediatek/mtk_disp_ccorr.h | 31 +
drivers/video/mediatek/mtk_disp_color.c | 50 ++
drivers/video/mediatek/mtk_disp_color.h | 31 +
drivers/video/mediatek/mtk_disp_comp.c | 4 +-
drivers/video/mediatek/mtk_disp_comp.h | 13 +-
drivers/video/mediatek/mtk_disp_dither.c | 89 +++
drivers/video/mediatek/mtk_disp_dither.h | 32 +
drivers/video/mediatek/mtk_disp_gamma.c | 51 ++
drivers/video/mediatek/mtk_disp_gamma.h | 31 +
drivers/video/mediatek/mtk_disp_mutex.c | 120 ++-
drivers/video/mediatek/mtk_disp_mutex.h | 9 +
drivers/video/mediatek/mtk_disp_ovl.c | 253 +++++++
drivers/video/mediatek/mtk_disp_ovl.h | 45 ++
drivers/video/mediatek/mtk_disp_rdma.c | 154 ++++
drivers/video/mediatek/mtk_disp_rdma.h | 30 +
drivers/video/mediatek/mtk_dsi.c | 1220 ++++++++++++++++++++++++++++++
include/mtk_smi.h | 19 +-
28 files changed, 2735 insertions(+), 29 deletions(-)
---
base-commit: 677a768c91b2baaefdf09633d1fdb5c9f758674f
change-id: 20260918-mt8365-mt8366-add-dsi-support-4f0e6cfd7032
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Best regards,
--
Julien Stephan <[email protected]>
