From ca161b259cc84fe1f4a2ce4c73c3832cf6f713f1 Mon Sep 17 00:00:00 2001
From: Marek Vasut <marex@denx.de>
Date: Mon, 3 Apr 2023 21:02:42 +0200
Subject: [PATCH] drm/bridge: ti-sn65dsi83: Do not generate HFP/HBP/HSA and EOT packet
Git-commit: ca161b259cc84fe1f4a2ce4c73c3832cf6f713f1
Patch-mainline: v6.4-rc1
References: git-fixes
Do not generate the HS front and back porch gaps, the HSA gap and
EOT packet, as per "SN65DSI83 datasheet SLLSEC1I - SEPTEMBER 2012
- REVISED OCTOBER 2020", page 22, these packets are not required.
This makes the TI SN65DSI83 bridge work with Samsung DSIM on i.MX8MN.
Signed-off-by: Marek Vasut <marex@denx.de>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Robert Foss <rfoss@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230403190242.224490-1-marex@denx.de
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/gpu/drm/bridge/ti-sn65dsi83.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/bridge/ti-sn65dsi83.c b/drivers/gpu/drm/bridge/ti-sn65dsi83.c
index 988e537ab884..75286c9afbb9 100644
--- a/drivers/gpu/drm/bridge/ti-sn65dsi83.c
+++ b/drivers/gpu/drm/bridge/ti-sn65dsi83.c
@@ -642,7 +642,9 @@ static int sn65dsi83_host_attach(struct sn65dsi83 *ctx)
dsi->lanes = dsi_lanes;
dsi->format = MIPI_DSI_FMT_RGB888;
- dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST;
+ dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST |
+ MIPI_DSI_MODE_VIDEO_NO_HFP | MIPI_DSI_MODE_VIDEO_NO_HBP |
+ MIPI_DSI_MODE_VIDEO_NO_HSA | MIPI_DSI_MODE_NO_EOT_PACKET;
ret = devm_mipi_dsi_attach(dev, dsi);
if (ret < 0) {
--
2.35.3