From 3326a363351e727a227a5dfcbec1665b97a1a7e9 Mon Sep 17 00:00:00 2001 From: Dave Stevenson Date: Thu, 31 Mar 2022 12:05:04 +0100 Subject: [PATCH] drm/panel: panel-ilitek9881c: Add prepare_upstream_first flag The panel sends MIPI DCS commands during prepare and is expecting the bus to remain in LP-11 state in-between. Set the prepare_upstream_first flag so that the upstream DSI host is prepared / pre_enabled first, and therefore the bus is in a defined state. Signed-off-by: Dave Stevenson --- drivers/gpu/drm/panel/panel-ilitek-ili9881c.c | 1 + 1 file changed, 1 insertion(+) --- a/drivers/gpu/drm/panel/panel-ilitek-ili9881c.c +++ b/drivers/gpu/drm/panel/panel-ilitek-ili9881c.c @@ -888,6 +888,7 @@ static int ili9881c_dsi_probe(struct mip ctx->dsi = dsi; ctx->desc = of_device_get_match_data(&dsi->dev); + ctx->panel.prepare_upstream_first = true; drm_panel_init(&ctx->panel, &dsi->dev, &ili9881c_funcs, DRM_MODE_CONNECTOR_DSI);