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 MT8365 power domain support [2],
- the MIPI DSI PHY driver [3],
- the MediaTek clock cleanups [4], gate lookup fixes [5], single
clk_ops [6], the MT8365 multimedia clock driver [7] and the rate
propagation [8],
- the display component helpers introduced by the MT8188 HDMI
series [9].
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: the per-compatible DSI data lists the components of each path.
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/20260915-mt8365-add-phy-mtk-mipi-dsi-driver-v1-0-83707ed52...@baylibre.com/
[4]:
https://lore.kernel.org/u-boot/[email protected]/
[5]:
https://lore.kernel.org/u-boot/[email protected]/
[6]:
https://lore.kernel.org/u-boot/[email protected]/
[7]:
https://lore.kernel.org/u-boot/20260925-mt8365-add-mulimedia-clock-driver-v1-1-5fbb0305e...@baylibre.com/
[8]:
https://lore.kernel.org/u-boot/[email protected]/
[9]:
https://lore.kernel.org/u-boot/20261002-add-genio-510-and-genio-700-hdmi-v8-0-2a6de7cf2...@baylibre.com/
Signed-off-by: Julien Stephan <[email protected]>
---
Changes in v2:
- mtk-smi: only ignore -ENODEV/-ENOENT from the smi_common lookup,
document PA in mtk_smi_larb_port_set_pa(), MT8366 larbs reuse the
MT8188 data.
- mutex: no_clk driver data flag instead of ignoring -ENOENT in the
shared probe, mtk_disp_mutex_ovl_dsi_enable() returns an error,
SoC-named helpers.
- ddp: SoC-named mt8365/mt8366_ddp_ovl_to_dsi().
- dsi: per-SoC component path replaces has_color_pipeline, match
"mediatek,mt8365-dsi", .remove() with DM_FLAG_OS_PREPARE instead of
DM_FLAG_LEAVE_PD_ON so Linux can take over, depend on POWER_DOMAIN,
drop mmu_set_region_dcache_behaviour().
- ovl: align the CLRFMT macros.
- Rebased on mediatek-for-next, dependencies updated, HDMI v8 [9].
- Link to v1:
https://patch.msgid.link/20260928-mt8365-mt8366-add-dsi-support-v1-0-212f51b17...@baylibre.com
---
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 | 6 +
configs/mt8366_genio_360_evk_defconfig | 7 +
drivers/memory/mtk-smi.c | 157 +++-
drivers/video/mediatek/Kconfig | 32 +
drivers/video/mediatek/Makefile | 19 +-
drivers/video/mediatek/mtk_ddp.c | 122 +++
drivers/video/mediatek/mtk_ddp.h | 30 +
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 | 1 +
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 | 133 +++-
drivers/video/mediatek/mtk_disp_mutex.h | 11 +
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 | 1184 ++++++++++++++++++++++++++++++
include/mtk_smi.h | 20 +-
27 files changed, 2642 insertions(+), 30 deletions(-)
---
base-commit: ca1c29c01bbd03f89cd86159b2959b4e72d41aa9
change-id: 20260918-mt8365-mt8366-add-dsi-support-4f0e6cfd7032
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Best regards,
--
Julien Stephan <[email protected]>
