From aed61ef6beb911cc043af0f2f291167663995065 Mon Sep 17 00:00:00 2001
From: Guillaume Ranquet <granquet@baylibre.com>
Date: Fri, 1 Jul 2022 11:58:44 +0800
Subject: [PATCH] drm/mediatek: dpi: Only enable dpi after the bridge is enabled
Git-commit: aed61ef6beb911cc043af0f2f291167663995065
Patch-mainline: v6.0-rc1
References: git-fixes

Enabling the dpi too early causes glitches on screen.

Move the call to mtk_dpi_enable() at the end of the bridge_enable
callback to ensure everything is setup properly before enabling dpi.

Fixes: 9e629c17aa8d ("drm/mediatek: Add DPI sub driver")
Signed-off-by: Guillaume Ranquet <granquet@baylibre.com>
Signed-off-by: Bo-Chen Chen <rex-bc.chen@mediatek.com>
Tested-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://patchwork.kernel.org/project/linux-mediatek/patch/20220701035845.16458-16-rex-bc.chen@mediatek.com/
Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 drivers/gpu/drm/mediatek/mtk_dpi.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/gpu/drm/mediatek/mtk_dpi.c
+++ b/drivers/gpu/drm/mediatek/mtk_dpi.c
@@ -396,7 +396,6 @@ static int mtk_dpi_power_on(struct mtk_d
 	if (dpi->pinctrl && dpi->pins_dpi)
 		pinctrl_select_state(dpi->pinctrl, dpi->pins_dpi);
 
-	mtk_dpi_enable(dpi);
 	return 0;
 
 err_pixel:
@@ -531,6 +530,7 @@ static void mtk_dpi_encoder_enable(struc
 
 	mtk_dpi_power_on(dpi);
 	mtk_dpi_set_display_mode(dpi, &dpi->mode);
+	mtk_dpi_enable(dpi);
 }
 
 static int mtk_dpi_atomic_check(struct drm_encoder *encoder,