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Revert "drm/bridge: lt9611: Do not generate HFP/HBP/HSA and EOT packet"

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This reverts commit 8ddce13ae6 ("drm/bridge: lt9611: Do not generate
HFP/HBP/HSA and EOT packet") to fix display regression on the Dragonboard
845c (SDM845) devboard.

There's a mismatch on the real action of the following flags:
- MIPI_DSI_MODE_VIDEO_NO_HSA
- MIPI_DSI_MODE_VIDEO_NO_HFP
- MIPI_DSI_MODE_VIDEO_NO_HBP
which leads to a non-working display on qcom platforms.

Cc: Marek Vasut <marex@denx.de>
Cc: Robert Foss <rfoss@kernel.org>
Cc: Jagan Teki <jagan@amarulasolutions.com>
Cc: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Cc: Abhinav Kumar <quic_abhinavk@quicinc.com>
Fixes: 8ddce13ae6 ("drm/bridge: lt9611: Do not generate HFP/HBP/HSA and EOT packet")
Reported-by: Amit Pundir <amit.pundir@linaro.org>
Closes: https://lore.kernel.org/r/CAMi1Hd0TD=2z_=bcDrht3H_wiLvAFcv8Z-U_r_KUOoeMc6UMjw@mail.gmail.com/
Tested-by: Amit Pundir <amit.pundir@linaro.org>
Acked-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> #fix db845c
[narmstrong: fixed commit message format]
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230802-revert-do-not-generate-hfp-hbp-hsa-eot-packet-v1-1-f8a20084e15a@linaro.org
This commit is contained in:
Neil Armstrong 2023-08-02 10:52:22 +02:00
parent 421dabcad1
commit 3c6bd1b7e2
1 changed files with 1 additions and 3 deletions
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4
drivers/gpu/drm/bridge/lontium-lt9611.c
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@ -774,9 +774,7 @@ static struct mipi_dsi_device *lt9611_attach_dsi(struct lt9611 *lt9611,
dsi->lanes = 4;
dsi->format = MIPI_DSI_FMT_RGB888;
dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_SYNC_PULSE |
MIPI_DSI_MODE_VIDEO_HSE | MIPI_DSI_MODE_VIDEO_NO_HSA |
MIPI_DSI_MODE_VIDEO_NO_HFP | MIPI_DSI_MODE_VIDEO_NO_HBP |
MIPI_DSI_MODE_NO_EOT_PACKET;
MIPI_DSI_MODE_VIDEO_HSE;
ret = devm_mipi_dsi_attach(dev, dsi);
if (ret < 0) {