[PATCH 3/3] drm/panel: simple: Add Displaytech DT050BTFT-PTS panel

[Marek Vasut <marex@nabladev.com>]

Add support for the Displaytech DT050BTFT-PTS 5.0" (800x480) color TFT
LCD panel, connected over DPI. Timings are taken from the datasheet
from 16 Nov 2023 is available from Seacomp:

https://www.seacomp.com/sites/default/files/datasheets/DT050BTFT-Displaytech-Spec.pdf

Signed-off-by: Marek Vasut <marex@nabladev.com>
---
Cc: "Kael D'Alcamo" <dev@kael-k.io>
Cc: Bjorn Andersson <bjorn.andersson@oss.qualcomm.com>
Cc: Conor Dooley <conor+dt@kernel.org>
Cc: David Airlie <airlied@gmail.com>
Cc: Jessica Zhang <jesszhan0024@gmail.com>
Cc: Krzysztof Kozlowski <krzk+dt@kernel.org>
Cc: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Maxime Ripard <mripard@kernel.org>
Cc: Neil Armstrong <neil.armstrong@linaro.org>
Cc: Rob Herring <robh@kernel.org>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Simona Vetter <simona@ffwll.ch>
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: devicetree@vger.kernel.org
Cc: dri-devel@lists.freedesktop.org
Cc: linux-kernel@vger.kernel.org
---
 drivers/gpu/drm/panel/panel-simple.c | 36 ++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)

diff --git a/drivers/gpu/drm/panel/panel-simple.c b/drivers/gpu/drm/panel/panel-simple.c
index 236bd56208ccf..9f4c907ae044e 100644
--- a/drivers/gpu/drm/panel/panel-simple.c
+++ b/drivers/gpu/drm/panel/panel-simple.c
@@ -1902,6 +1902,39 @@ static const struct panel_desc dataimage_scf0700c48ggu18 = {
 	.connector_type = DRM_MODE_CONNECTOR_DPI,
 };
 
+static const struct display_timing displaytech_dt050btft_pts_timing = {
+	/* The TYP pixel clock are recalculated from tV * tH * 60 Hz */
+	.pixelclock = { 30000000, 33264000, 50000000 },
+	.hactive = { 800, 800, 800 },
+	.hfront_porch = { 16, 210, 354 },
+	/* Datasheet Figure 3 indicates, that tHPW is part of tHBP */
+	.hback_porch = { 41, 26, 6 },
+	.hsync_len = { 1, 20, 40 },
+	.vactive = { 480, 480, 480 },
+	.vfront_porch = { 7, 22, 147 },
+	/* Datasheet Figure 2 indicates, that tVPW is part of tVBP */
+	.vback_porch = { 22, 13, 3 },
+	.vsync_len = { 1, 10, 20 },
+	.flags = DISPLAY_FLAGS_HSYNC_LOW | DISPLAY_FLAGS_VSYNC_LOW |
+		 DISPLAY_FLAGS_DE_HIGH | DISPLAY_FLAGS_PIXDATA_POSEDGE |
+		 DISPLAY_FLAGS_SYNC_POSEDGE,
+};
+
+static const struct panel_desc displaytech_dt050btft_pts = {
+	.timings = &displaytech_dt050btft_pts_timing,
+	.num_timings = 1,
+	.bpc = 8,
+	.size = {
+		.width = 108,
+		.height = 65,
+	},
+	.bus_format = MEDIA_BUS_FMT_RGB888_1X24,
+	.bus_flags = DRM_BUS_FLAG_DE_HIGH |
+		     DRM_BUS_FLAG_PIXDATA_SAMPLE_NEGEDGE |
+		     DRM_BUS_FLAG_SYNC_SAMPLE_NEGEDGE,
+	.connector_type = DRM_MODE_CONNECTOR_DPI,
+};
+
 static const struct display_timing dlc_dlc0700yzg_1_timing = {
 	.pixelclock = { 45000000, 51200000, 57000000 },
 	.hactive = { 1024, 1024, 1024 },
@@ -5319,6 +5352,9 @@ static const struct of_device_id platform_of_match[] = {
 	}, {
 		.compatible = "dataimage,scf0700c48ggu18",
 		.data = &dataimage_scf0700c48ggu18,
+	}, {
+		.compatible = "displaytech,dt050btft-pts",
+		.data = &displaytech_dt050btft_pts,
 	}, {
 		.compatible = "dlc,dlc0700yzg-1",
 		.data = &dlc_dlc0700yzg_1,
-- 
2.53.0