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drm: bridge: icn6211: Use DSI burst mode without EoT and with LP command mode

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The DSI burst mode is more energy efficient than the DSI sync pulse mode,
make use of the burst mode since the chip supports it as well. Disable the
generation of EoT packet, the chip ignores it, so no point in emitting it.
Enable transmission of data in LP mode, otherwise register read via DSI
does not work with this chip.

Acked-by: Maxime Ripard <maxime@cerno.tech>
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Jagan Teki <jagan@amarulasolutions.com>
Cc: Maxime Ripard <maxime@cerno.tech>
Cc: Robert Foss <robert.foss@linaro.org>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
To: dri-devel@lists.freedesktop.org
Signed-off-by: Robert Foss <robert.foss@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20220331150509.9838-6-marex@denx.de
This commit is contained in:
Marek Vasut 2022-03-31 17:05:03 +02:00 committed by Robert Foss
parent f30cf0ece6
commit 00404824b8
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GPG Key ID: 3EFD900F76D1D784
1 changed files with 2 additions and 1 deletions
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3
drivers/gpu/drm/bridge/chipone-icn6211.c
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@ -464,7 +464,8 @@ static int chipone_probe(struct mipi_dsi_device *dsi)
dsi->lanes = 4;
dsi->format = MIPI_DSI_FMT_RGB888;
dsi->mode_flags = MIPI_DSI_MODE_VIDEO_SYNC_PULSE;
dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST |
MIPI_DSI_MODE_LPM | MIPI_DSI_MODE_NO_EOT_PACKET;
ret = mipi_dsi_attach(dsi);
if (ret < 0) {