diff options
| author | Hsiao Chien Sung <shawn.sung@mediatek.corp-partner.google.com> | 2024-02-20 17:37:11 +0800 |
|---|---|---|
| committer | Chun-Kuang Hu <chunkuang.hu@kernel.org> | 2024-02-27 00:02:55 +0000 |
| commit | 5306b3fe57370e8f42f5d2924c063226e76b16a4 (patch) | |
| tree | 6a1d0bce3a275b83b67ac54f050c28d8f782678a /drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c | |
| parent | e14cba94bc19ff78545d87a6f85b871cf012df3f (diff) | |
drm/mediatek: Filter modes according to hardware capability
We found a stability issue on MT8188 when connecting an external monitor
in 2560x1440@144Hz mode. Checked with the designer, there is a function
called "prefetch" which is working during VBP (triggered by VSYNC).
If the duration of VBP is too short, the throughput requirement could
increase more than 3 times and lead to stability issues.
The mode settings that VDOSYS supports are mainly affected by clock
rate and throughput, display driver should filter these settings
according to the SoC's limitation to avoid unstable conditions.
Since currently the mode filter is only available on MT8195 and MT8188
and they share the same compatible name, the reference number (8250)
is hard coded instead of in the driver data.
Signed-off-by: Hsiao Chien Sung <shawn.sung@mediatek.corp-partner.google.com>
Reviewed-by: CK Hu <ck.hu@mediatek.com>
Link: https://patchwork.kernel.org/project/dri-devel/patch/20240220093711.20546-2-shawn.sung@mediatek.com/
Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
Diffstat (limited to 'drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c')
| -rw-r--r-- | drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c index a9b5a21cde2d..a515e96cfefc 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c +++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c @@ -418,6 +418,7 @@ static const struct mtk_ddp_comp_funcs ddp_ovl_adaptor = { .remove = mtk_ovl_adaptor_remove_comp, .get_formats = mtk_ovl_adaptor_get_formats, .get_num_formats = mtk_ovl_adaptor_get_num_formats, + .mode_valid = mtk_ovl_adaptor_mode_valid, }; static const char * const mtk_ddp_comp_stem[MTK_DDP_COMP_TYPE_MAX] = { |