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 --- V2: Rebase on next-20220214 V3: Add AB from Maxime V4: No change V5: No change V6: No change --- drivers/gpu/drm/bridge/chipone-icn6211.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/bridge/chipone-icn6211.c b/drivers/gpu/drm/bridge/chipone-icn6211.c index d4a52176814c..e3a7b945a0ef 100644 --- a/drivers/gpu/drm/bridge/chipone-icn6211.c +++ b/drivers/gpu/drm/bridge/chipone-icn6211.c @@ -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) {