drm/panel-simple: Add Innolux G156HCE-L01 panel entry

Add support for Innolux G156HCE-L01 15.6" 1920x1080 24bpp
dual-link LVDS TFT panel. Documentation is available at [1].
The middle frequency is tuned slightly upward from 70.93 MHz
to 72 MHz, otherwise the panel shows slight flicker.

[1] https://www.distec.de/fileadmin/pdf/produkte/TFT-Displays/Innolux/G156HCE-L01_Rev.C3_Datasheet.pdf

Signed-off-by: Marek Vasut <marex@denx.de>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230731210258.256152-2-marex@denx.de

Author: Marek Vasut

drivers/gpu/drm/panel/panel-simple.c

@@ -2376,6 +2376,37 @@ static const struct panel_desc innolux_g121x1_l03 = {
 	},
 };
 
+static const struct display_timing innolux_g156hce_l01_timings = {
+	.pixelclock = { 120000000, 144000000, 150000000 },
+	.hactive = { 1920, 1920, 1920 },
+	.hfront_porch = { 80, 90, 100 },
+	.hback_porch = { 80, 90, 100 },
+	.hsync_len = { 20, 30, 30 },
+	.vactive = { 1080, 1080, 1080 },
+	.vfront_porch = { 3, 10, 20 },
+	.vback_porch = { 3, 10, 20 },
+	.vsync_len = { 4, 10, 10 },
+};
+
+static const struct panel_desc innolux_g156hce_l01 = {
+	.timings = &innolux_g156hce_l01_timings,
+	.num_timings = 1,
+	.bpc = 8,
+	.size = {
+		.width = 344,
+		.height = 194,
+	},
+	.delay = {
+		.prepare = 1,		/* T1+T2 */
+		.enable = 450,		/* T5 */
+		.disable = 200,		/* T6 */
+		.unprepare = 10,	/* T3+T7 */
+	},
+	.bus_format = MEDIA_BUS_FMT_RGB888_1X7X4_SPWG,
+	.bus_flags = DRM_BUS_FLAG_DE_HIGH,
+	.connector_type = DRM_MODE_CONNECTOR_LVDS,
+};
+
 static const struct drm_display_mode innolux_n156bge_l21_mode = {
 	.clock = 69300,
 	.hdisplay = 1366,
@@ -4242,6 +4273,9 @@ static const struct of_device_id platform_of_match[] = {
 	}, {
 		.compatible = "innolux,g121x1-l03",
 		.data = &innolux_g121x1_l03,
+	}, {
+		.compatible = "innolux,g156hce-l01",
+		.data = &innolux_g156hce_l01,
 	}, {
 		.compatible = "innolux,n156bge-l21",
 		.data = &innolux_n156bge_l21,