From 00404824b8ad2551df2df8e74ac37a46fad941f6 Mon Sep 17 00:00:00 2001 From: Marek Vasut Date: Thu, 31 Mar 2022 17:05:03 +0200 Subject: [PATCH] drm: bridge: icn6211: Use DSI burst mode without EoT and with LP command mode 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 Signed-off-by: Marek Vasut Cc: Jagan Teki Cc: Maxime Ripard Cc: Robert Foss Cc: Sam Ravnborg Cc: Thomas Zimmermann To: dri-devel@lists.freedesktop.org Signed-off-by: Robert Foss Link: https://patchwork.freedesktop.org/patch/msgid/20220331150509.9838-6-marex@denx.de --- 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) { -- 2.25.1