soc/mediatek/mt8173: Remove dual DSI mode

The 'dual DSI mode' was never used by any real boards running coreboot
and is introducing lots of complexity when it comes to refactoring.

In order to create a common display stack for MTK SOCs, we want to first
drop dual DSI mode so 8173 and 8183 DSI/DDP implementation will be more
similar to each other.

BUG=b:80501386,b:117254947
TEST=emerge-oak coreboot

Change-Id: I357c30cc687803ca8045d0b055dec2e22eef4291
Signed-off-by: Hung-Te Lin <hungte@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/34693
Reviewed-by: Julius Werner <jwerner@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

1 files changed, 3 insertions, 7 deletions

diff --git a/src/mainboard/google/oak/mainboard.c b/src/mainboard/google/oak/mainboard.c
index fde2bd00e1..0dce17d40d 100644
--- a/src/mainboard/google/oak/mainboard.c
+++ b/src/mainboard/google/oak/mainboard.c
@@ -226,25 +226,21 @@ static void display_startup(void)
 	struct edid edid;
 	int ret;
 	u32 mipi_dsi_flags;
-	bool dual_dsi_mode;
 
 	if (read_edid_from_ps8640(&edid) < 0)
 		return;
 
-	dual_dsi_mode = false;
 	mipi_dsi_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_SYNC_PULSE;
 	edid_set_framebuffer_bits_per_pixel(&edid, 32, 0);
 
-	mtk_ddp_init(dual_dsi_mode);
-	ret = mtk_dsi_init(mipi_dsi_flags, MIPI_DSI_FMT_RGB888, 4,
-			   dual_dsi_mode, &edid);
+	mtk_ddp_init();
+	ret = mtk_dsi_init(mipi_dsi_flags, MIPI_DSI_FMT_RGB888, 4, &edid);
 	if (ret < 0) {
 		printk(BIOS_ERR, "dsi init fail\n");
 		return;
 	}
 
-	mtk_ddp_mode_set(&edid, dual_dsi_mode);
-
+	mtk_ddp_mode_set(&edid);
 	set_vbe_mode_info_valid(&edid, (uintptr_t)0);
 }