diff options
| author | Neil Armstrong <[email protected]> | 2022-02-04 14:33:37 +0000 |
|---|---|---|
| committer | Neil Armstrong <[email protected]> | 2022-02-10 15:36:53 +0000 |
| commit | 1528038385c0a706aac9ac165eeb24044fef6825 (patch) | |
| tree | 02b056101904d3573e801e48eb7f80430d7de280 /drivers/gpu/drm/lima/lima_gem.c | |
| parent | drm/fb-helper: Clip damage area horizontally (diff) | |
| download | kernel-1528038385c0a706aac9ac165eeb24044fef6825.tar.gz kernel-1528038385c0a706aac9ac165eeb24044fef6825.zip | |
drm/bridge: dw-hdmi: use safe format when first in bridge chain
When the dw-hdmi bridge is in first place of the bridge chain, this
means there is no way to select an input format of the dw-hdmi HW
component.
Since introduction of display-connector, negotiation was broken since
the dw-hdmi negotiation code only worked when the dw-hdmi bridge was
in last position of the bridge chain or behind another bridge also
supporting input & output format negotiation.
Commit 7cd70656d128 ("drm/bridge: display-connector: implement bus fmts callbacks")
was introduced to make negotiation work again by making display-connector
act as a pass-through concerning input & output format negotiation.
But in the case where the dw-hdmi is single in the bridge chain, for
example on Renesas SoCs, with the display-connector bridge the dw-hdmi
is no more single, breaking output format.
Reported-by: Biju Das <[email protected]>
Bisected-by: Kieran Bingham <[email protected]>
Tested-by: Kieran Bingham <[email protected]>
Fixes: 6c3c719936da ("drm/bridge: synopsys: dw-hdmi: add bus format negociation")
Signed-off-by: Neil Armstrong <[email protected]>
[narmstrong: add proper fixes commit]
Reviewed-by: Robert Foss <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
Diffstat (limited to 'drivers/gpu/drm/lima/lima_gem.c')
0 files changed, 0 insertions, 0 deletions