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drm/bridge: lontium-lt8912b: Do not generate HFP

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The datasheet of lontium-lt8912b doesn't require blanking during
the HFP period. Thus use LP during HFP.

Tested with a samsung-dsim (i.MX8 MM) and a tc358768 DPI to DSI bridge
as the DSI host.

Signed-off-by: Max Krummenacher <max.krummenacher@toradex.com>
Reviewed-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
Link: https://patch.msgid.link/20250728150059.2642055-1-max.oss.09@gmail.com
Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
This commit is contained in:
Max Krummenacher 2025-07-28 17:00:50 +02:00 committed by Luca Ceresoli
parent 55a412e3a7
commit 9a56caf495
1 changed files with 1 additions and 0 deletions
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drivers/gpu/drm/bridge/lontium-lt8912b.c
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@ -493,6 +493,7 @@ static int lt8912_attach_dsi(struct lt8912 *lt)
dsi->mode_flags = MIPI_DSI_MODE_VIDEO |
MIPI_DSI_MODE_LPM |
MIPI_DSI_MODE_VIDEO_NO_HFP |
MIPI_DSI_MODE_NO_EOT_PACKET;
ret = devm_mipi_dsi_attach(dev, dsi);