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