[PATCH 4/4] drm/panel: st7703: Add DCLTek 300248 10.25in display
From: Marc-Olivier Champagne
Date: Wed Oct 07 2026 - 16:25:12 EST
The DCLTek dt300248 is an LCD panel using the Sitronix ST7703
controller. Add the panel to the driver.
Suggested-by: Hugo Villeneuve <hvilleneuve@xxxxxxxxxxxx>
Signed-off-by: Marc-Olivier Champagne <marc-olivier.champagne@xxxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/panel/panel-sitronix-st7703.c | 97 +++++++++++++++++++
1 file changed, 97 insertions(+)
diff --git a/drivers/gpu/drm/panel/panel-sitronix-st7703.c b/drivers/gpu/drm/panel/panel-sitronix-st7703.c
index f4635a7327de..b3abfe8c9ed9 100644
--- a/drivers/gpu/drm/panel/panel-sitronix-st7703.c
+++ b/drivers/gpu/drm/panel/panel-sitronix-st7703.c
@@ -768,6 +768,102 @@ static const struct st7703_panel_desc ayaneo_pocket_ds_lower_desc = {
.init_sequence = ayaneo_pocket_ds_lower_init_sequence,
};
+static void dcltek_dt300248_init_sequence(struct mipi_dsi_multi_context *dsi_ctx)
+{
+ mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETEXTC, 0xf1, 0x12, 0x87);
+ mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETDISP, 0xe0, 0x05, 0xf8);
+ mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETRGBIF, 0x10, 0x10, 0x28,
+ 0x28, 0x03, 0xff, 0x00, 0x00, 0x00, 0x00);
+ mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETCYC, 0x80);
+ mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETBGP, 0x0d, 0x0b);
+ mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETVCOM, 0x6d, 0x6d);
+ mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETPOWER_EXT, 0x25, 0x62,
+ 0x20, 0x03);
+ mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETMIPI,
+ 0x33, 0x81, 0x05, 0xf9, 0x0e, 0x0e, 0x20, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x44, 0x25,
+ 0x00, 0x91, 0x0a, 0x00, 0x00, 0x01, 0x4f, 0x01,
+ 0x00, 0x00, 0x37);
+ mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETVDC, 0x47);
+ mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_UNKNOWN_BF,
+ 0x02, 0x10, 0x00, 0x80, 0x04);
+
+ mipi_dsi_msleep(dsi_ctx, 20);
+
+ mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETSCR,
+ 0x73, 0x73, 0x50, 0x50, 0xa0, 0x00, 0x12, 0x53,
+ 0x00);
+ mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETPOWER,
+ 0x25, 0x00, 0x32, 0x32, 0x77, 0xe4, 0x77, 0x77,
+ 0xcc, 0xcc, 0xff, 0xff, 0x11, 0x11, 0x00, 0x00,
+ 0x32);
+ mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETIO,
+ 0x10, 0x00, 0x0a, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0xed, 0xc5, 0x00, 0xa5);
+ mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETCABC,
+ 0x10, 0x40, 0x1e, 0x03);
+ mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETPANEL, 0x07);
+ mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETGAMMA,
+ 0x00, 0x13, 0x1a, 0x2c, 0x34, 0x3f, 0x4f, 0x3f,
+ 0x06, 0x0c, 0x0d, 0x14, 0x15, 0x13, 0x13, 0x11,
+ 0x19, 0x00, 0x13, 0x1a, 0x2c, 0x34, 0x3f, 0x4f,
+ 0x3f, 0x06, 0x0c, 0x0d, 0x14, 0x15, 0x13, 0x13,
+ 0x11, 0x19);
+ mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_UNKNOWN_E1,
+ 0x11, 0x11, 0x91, 0x00, 0x00, 0x00, 0x00);
+ mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETEQ,
+ 0x07, 0x07, 0x0b, 0x0b, 0x0b, 0x0b, 0x00, 0x00,
+ 0x00, 0x00, 0x2f, 0x04, 0xc0, 0x10);
+ mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETGIP1,
+ 0xc8, 0x10, 0x0a, 0x10, 0x0e, 0x80, 0x38, 0x12,
+ 0x31, 0x23, 0x4f, 0x86, 0x80, 0x38, 0x47, 0x08,
+ 0x00, 0x0c, 0x04, 0x00, 0x00, 0x00, 0x00, 0x0c,
+ 0x04, 0x00, 0x00, 0x00, 0x8f, 0x44, 0x60, 0x28,
+ 0xba, 0x02, 0x88, 0x88, 0x88, 0x88, 0x88, 0x8f,
+ 0x45, 0x71, 0x38, 0xba, 0x13, 0x88, 0x88, 0x88,
+ 0x88, 0x88, 0x00, 0x00, 0x00, 0x01, 0x00, 0x80,
+ 0x38, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00);
+ mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETGIP2,
+ 0x96, 0x18, 0x00, 0x00, 0x00, 0xb4, 0x01, 0x0b,
+ 0x41, 0x01, 0x02, 0x00, 0xf8, 0x43, 0x17, 0x58,
+ 0xba, 0x31, 0x88, 0x88, 0x88, 0x88, 0x88, 0xf8,
+ 0x42, 0x06, 0x48, 0xba, 0x20, 0x88, 0x88, 0x88,
+ 0x88, 0x88, 0x23, 0x00, 0x00, 0x00, 0xd7, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x07, 0x8b, 0x00, 0x00, 0x40, 0x80,
+ 0x81, 0x40, 0x80, 0x81, 0x00);
+ mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_UNKNOWN_EF,
+ 0xff, 0xff, 0x01);
+}
+
+static const struct drm_display_mode dcltek_dt300248_mode = {
+ .clock = (440 + 8 + 32 + 40) * (1920 + 41 + 8 + 6) * 60 / 1000,
+
+ .hdisplay = 440,
+ .hsync_start = 440 + 8,
+ .hsync_end = 440 + 8 + 32,
+ .htotal = 440 + 8 + 32 + 40,
+
+ .vdisplay = 1920,
+ .vsync_start = 1920 + 41,
+ .vsync_end = 1920 + 41 + 8,
+ .vtotal = 1920 + 41 + 8 + 6,
+
+ .width_mm = 58,
+ .height_mm = 253,
+ .flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC,
+};
+
+static const struct st7703_panel_desc dcltek_dt300248_desc = {
+ .mode = &dcltek_dt300248_mode,
+ .lanes = 4,
+ .mode_flags = MIPI_DSI_MODE_VIDEO |
+ MIPI_DSI_MODE_VIDEO_BURST | MIPI_DSI_MODE_VIDEO_SYNC_PULSE |
+ MIPI_DSI_MODE_LPM,
+ .format = MIPI_DSI_FMT_RGB888,
+ .init_sequence = dcltek_dt300248_init_sequence,
+};
+
static int st7703_enable(struct drm_panel *panel)
{
struct st7703 *ctx = panel_to_st7703(panel);
@@ -1026,6 +1122,7 @@ static void st7703_remove(struct mipi_dsi_device *dsi)
static const struct of_device_id st7703_of_match[] = {
{ .compatible = "anbernic,rg353v-panel-v2", .data = &rg353v2_desc },
{ .compatible = "ayaneo,pocket-ds-lower-panel", .data = &ayaneo_pocket_ds_lower_desc },
+ { .compatible = "dcltek,dt300248", .data = &dcltek_dt300248_desc },
{ .compatible = "gameforce,chi-panel", .data = &gameforcechi_desc },
{ .compatible = "powkiddy,rgb10max3-panel", .data = &rgb10max3_panel_desc },
{ .compatible = "powkiddy,rgb30-panel", .data = &rgb30panel_desc },
--
2.34.1