[PATCH 0/4] drm/panel: st7703: add support for DCLTek DT300248

[PATCH 0/4] drm/panel: st7703: add support for DCLTek DT300248

[Marc-Olivier Champagne]

This series adds support for the DCLTek DT300248 10.25-inch MIPI DSI
panel based on the Sitronix ST7703 controller.

Patches 1 and 2 are necessary preparation: they make the driver send
the init sequence from prepare() with the DSI host guaranteed up,
since not all hosts accept commands once the video stream is running.
These affect all panels using the driver.

Patches 3 and 4 add the binding and panel.

Marc-Olivier Champagne (4):
  drm/panel: st7703: set prepare_prev_first
  drm/panel: st7703: move init commands to prepare()
  dt-bindings: display: panel: add compatible for DCLTek 300248 10.25in
    panel
  drm/panel: st7703: Add DCLTek 300248 10.25in display

 .../display/panel/rocktech,jh057n00900.yaml   |   2 +
 drivers/gpu/drm/panel/panel-sitronix-st7703.c | 117 +++++++++++++++++-
 2 files changed, 116 insertions(+), 3 deletions(-)


base-commit: 5d7b464a4f517d1db533b1b231f42ddcf4e1dff4
-- 
2.34.1

[PATCH 1/4] drm/panel: st7703: set prepare_prev_first

[Marc-Olivier Champagne]

The DSI host must be enabled for the panel to be initialized in
prepare(). Set the prepare_prev_first flag to guarantee this.

Suggested-by: Hugo Villeneuve <hvilleneuve@dimonoff.com>
Signed-off-by: Marc-Olivier Champagne <marc-olivier.champagne@savoirfairelinux.com>
---
 drivers/gpu/drm/panel/panel-sitronix-st7703.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/panel/panel-sitronix-st7703.c b/drivers/gpu/drm/panel/panel-sitronix-st7703.c
index 70f7282471e6..368c57591817 100644
--- a/drivers/gpu/drm/panel/panel-sitronix-st7703.c
+++ b/drivers/gpu/drm/panel/panel-sitronix-st7703.c
@@ -973,6 +973,8 @@ static int st7703_probe(struct mipi_dsi_device *dsi)
 	if (ret < 0)
 		return dev_err_probe(&dsi->dev, ret, "Failed to get orientation\n");
 
+	ctx->panel.prepare_prev_first = true;
+
 	ret = drm_panel_of_backlight(&ctx->panel);
 	if (ret)
 		return ret;
-- 
2.34.1

Re: [PATCH 1/4] drm/panel: st7703: set prepare_prev_first

[Neil Armstrong]

On 10/7/26 22:18, Marc-Olivier Champagne wrote:
> The DSI host must be enabled for the panel to be initialized in
> prepare(). Set the prepare_prev_first flag to guarantee this.
> 
> Suggested-by: Hugo Villeneuve <hvilleneuve@dimonoff.com>
> Signed-off-by: Marc-Olivier Champagne <marc-olivier.champagne@savoirfairelinux.com>
> ---
>   drivers/gpu/drm/panel/panel-sitronix-st7703.c | 2 ++
>   1 file changed, 2 insertions(+)
> 
> diff --git a/drivers/gpu/drm/panel/panel-sitronix-st7703.c b/drivers/gpu/drm/panel/panel-sitronix-st7703.c
> index 70f7282471e6..368c57591817 100644
> --- a/drivers/gpu/drm/panel/panel-sitronix-st7703.c
> +++ b/drivers/gpu/drm/panel/panel-sitronix-st7703.c
> @@ -973,6 +973,8 @@ static int st7703_probe(struct mipi_dsi_device *dsi)
>   	if (ret < 0)
>   		return dev_err_probe(&dsi->dev, ret, "Failed to get orientation\n");
>   
> +	ctx->panel.prepare_prev_first = true;
> +
>   	ret = drm_panel_of_backlight(&ctx->panel);
>   	if (ret)
>   		return ret;

Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>

Thanks,
Neil

[PATCH 2/4] drm/panel: st7703: move init commands to prepare()

[Marc-Olivier Champagne]

The panel init sequence is currently sent from enable(), i.e. after
the DSI host has started the video stream. Not all DSI hosts accept
command packets in that state, so the init sequence may never reach
the panel.

Move the init sequence to prepare(), right after the panel reset, to
ensure it is sent before the host enables the video stream.

Since the init sequence can now fail in prepare(), power the panel
back down on error: the panel core does not call unprepare() when
prepare() fails, leaving the power supplies enabled.

Both patterns are already used by other DSI panel drivers.

Suggested-by: Hugo Villeneuve <hvilleneuve@dimonoff.com>
Signed-off-by: Marc-Olivier Champagne <marc-olivier.champagne@savoirfairelinux.com>
---
 drivers/gpu/drm/panel/panel-sitronix-st7703.c | 18 +++++++++++++++---
 1 file changed, 15 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/panel/panel-sitronix-st7703.c b/drivers/gpu/drm/panel/panel-sitronix-st7703.c
index 368c57591817..f4635a7327de 100644
--- a/drivers/gpu/drm/panel/panel-sitronix-st7703.c
+++ b/drivers/gpu/drm/panel/panel-sitronix-st7703.c
@@ -774,8 +774,6 @@ static int st7703_enable(struct drm_panel *panel)
 	struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
 	struct mipi_dsi_multi_context dsi_ctx = {.dsi = dsi};
 
-	ctx->desc->init_sequence(&dsi_ctx);
-
 	mipi_dsi_dcs_exit_sleep_mode_multi(&dsi_ctx);
 
 	/* It takes the controller 120 msec to wake up after sleep. */
@@ -784,7 +782,7 @@ static int st7703_enable(struct drm_panel *panel)
 	mipi_dsi_dcs_set_display_on_multi(&dsi_ctx);
 
 	if (!dsi_ctx.accum_err)
-		dev_dbg(ctx->dev, "Panel init sequence done\n");
+		dev_dbg(ctx->dev, "Panel enable done\n");
 
 	return dsi_ctx.accum_err;
 }
@@ -819,6 +817,8 @@ static int st7703_unprepare(struct drm_panel *panel)
 static int st7703_prepare(struct drm_panel *panel)
 {
 	struct st7703 *ctx = panel_to_st7703(panel);
+	struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
+	struct mipi_dsi_multi_context dsi_ctx = {.dsi = dsi};
 	int ret;
 
 	dev_dbg(ctx->dev, "Resetting the panel\n");
@@ -843,6 +843,18 @@ static int st7703_prepare(struct drm_panel *panel)
 	gpiod_set_value_cansleep(ctx->reset_gpio, 0);
 	usleep_range(15000, 20000);
 
+	ctx->desc->init_sequence(&dsi_ctx);
+
+	if (dsi_ctx.accum_err) {
+		gpiod_set_value_cansleep(ctx->reset_gpio, 1);
+		regulator_disable(ctx->iovcc);
+		regulator_disable(ctx->vcc);
+
+		return dsi_ctx.accum_err;
+	}
+
+	dev_dbg(ctx->dev, "Panel init sequence done\n");
+
 	return 0;
 }
 
-- 
2.34.1

Re: [PATCH 2/4] drm/panel: st7703: move init commands to prepare()

[Neil Armstrong]

On 10/7/26 22:18, Marc-Olivier Champagne wrote:
> The panel init sequence is currently sent from enable(), i.e. after
> the DSI host has started the video stream. Not all DSI hosts accept
> command packets in that state, so the init sequence may never reach
> the panel.
> 
> Move the init sequence to prepare(), right after the panel reset, to
> ensure it is sent before the host enables the video stream.
> 
> Since the init sequence can now fail in prepare(), power the panel
> back down on error: the panel core does not call unprepare() when
> prepare() fails, leaving the power supplies enabled.
> 
> Both patterns are already used by other DSI panel drivers.
> 
> Suggested-by: Hugo Villeneuve <hvilleneuve@dimonoff.com>
> Signed-off-by: Marc-Olivier Champagne <marc-olivier.champagne@savoirfairelinux.com>
> ---
>   drivers/gpu/drm/panel/panel-sitronix-st7703.c | 18 +++++++++++++++---
>   1 file changed, 15 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/gpu/drm/panel/panel-sitronix-st7703.c b/drivers/gpu/drm/panel/panel-sitronix-st7703.c
> index 368c57591817..f4635a7327de 100644
> --- a/drivers/gpu/drm/panel/panel-sitronix-st7703.c
> +++ b/drivers/gpu/drm/panel/panel-sitronix-st7703.c
> @@ -774,8 +774,6 @@ static int st7703_enable(struct drm_panel *panel)
>   	struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
>   	struct mipi_dsi_multi_context dsi_ctx = {.dsi = dsi};
>   
> -	ctx->desc->init_sequence(&dsi_ctx);
> -
>   	mipi_dsi_dcs_exit_sleep_mode_multi(&dsi_ctx);
>   
>   	/* It takes the controller 120 msec to wake up after sleep. */
> @@ -784,7 +782,7 @@ static int st7703_enable(struct drm_panel *panel)
>   	mipi_dsi_dcs_set_display_on_multi(&dsi_ctx);
>   
>   	if (!dsi_ctx.accum_err)
> -		dev_dbg(ctx->dev, "Panel init sequence done\n");
> +		dev_dbg(ctx->dev, "Panel enable done\n");
>   
>   	return dsi_ctx.accum_err;
>   }
> @@ -819,6 +817,8 @@ static int st7703_unprepare(struct drm_panel *panel)
>   static int st7703_prepare(struct drm_panel *panel)
>   {
>   	struct st7703 *ctx = panel_to_st7703(panel);
> +	struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
> +	struct mipi_dsi_multi_context dsi_ctx = {.dsi = dsi};
>   	int ret;
>   
>   	dev_dbg(ctx->dev, "Resetting the panel\n");
> @@ -843,6 +843,18 @@ static int st7703_prepare(struct drm_panel *panel)
>   	gpiod_set_value_cansleep(ctx->reset_gpio, 0);
>   	usleep_range(15000, 20000);
>   
> +	ctx->desc->init_sequence(&dsi_ctx);
> +
> +	if (dsi_ctx.accum_err) {
> +		gpiod_set_value_cansleep(ctx->reset_gpio, 1);
> +		regulator_disable(ctx->iovcc);
> +		regulator_disable(ctx->vcc);
> +
> +		return dsi_ctx.accum_err;
> +	}
> +
> +	dev_dbg(ctx->dev, "Panel init sequence done\n");
> +
>   	return 0;
>   }
>   

Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>

Thanks,
Neil

[PATCH 3/4] dt-bindings: display: panel: add compatible for DCLTek 300248 10.25in panel

[Marc-Olivier Champagne]

The DCLTek dt300248 is a panel using the Sitronix ST7703 controller.
Add a new compatible for it.

Suggested-by: Hugo Villeneuve <hvilleneuve@dimonoff.com>
Signed-off-by: Marc-Olivier Champagne <marc-olivier.champagne@savoirfairelinux.com>
---
 .../devicetree/bindings/display/panel/rocktech,jh057n00900.yaml | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Documentation/devicetree/bindings/display/panel/rocktech,jh057n00900.yaml b/Documentation/devicetree/bindings/display/panel/rocktech,jh057n00900.yaml
index 91e06d6a6819..b05f3e8cfcd4 100644
--- a/Documentation/devicetree/bindings/display/panel/rocktech,jh057n00900.yaml
+++ b/Documentation/devicetree/bindings/display/panel/rocktech,jh057n00900.yaml
@@ -24,6 +24,8 @@ properties:
       - anbernic,rg353v-panel-v2
       # AYANEO Pocket DS lower 5.0" 1024x768 IPS LCD panel
       - ayaneo,pocket-ds-lower-panel
+      # DCLTek DT300248 10.25" 440x1920 LCD panel
+      - dcltek,dt300248
       # GameForce Chi 3.5" 640x480 TFT LCD panel
       - gameforce,chi-panel
       # Powkiddy RGB10MAX3 5.0" 720x1280 TFT LCD panel
-- 
2.34.1

Re: [PATCH 3/4] dt-bindings: display: panel: add compatible for DCLTek 300248 10.25in panel

[Conor Dooley]

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Acked-by: Conor Dooley <conor.dooley@microchip.com>
pw-bot: not-applicable

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Re: [PATCH 3/4] dt-bindings: display: panel: add compatible for DCLTek 300248 10.25in panel

[Conor Dooley]

[-- Attachment #1: Type: text/plain, Size: 75 bytes --]

Acked-by: Conor Dooley <conor.dooley@microchip.com>
pw-bot: not-applicable

[-- Attachment #2: signature.asc --]
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[PATCH 4/4] drm/panel: st7703: Add DCLTek 300248 10.25in display

[Marc-Olivier Champagne]

The DCLTek dt300248 is an LCD panel using the Sitronix ST7703
controller. Add the panel to the driver.

Suggested-by: Hugo Villeneuve <hvilleneuve@dimonoff.com>
Signed-off-by: Marc-Olivier Champagne <marc-olivier.champagne@savoirfairelinux.com>
---
 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

Re: [PATCH 4/4] drm/panel: st7703: Add DCLTek 300248 10.25in display

[Neil Armstrong]

On 10/7/26 22:18, Marc-Olivier Champagne wrote:
> The DCLTek dt300248 is an LCD panel using the Sitronix ST7703
> controller. Add the panel to the driver.
> 
> Suggested-by: Hugo Villeneuve <hvilleneuve@dimonoff.com>
> Signed-off-by: Marc-Olivier Champagne <marc-olivier.champagne@savoirfairelinux.com>
> ---
>   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 },

Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>

Thanks,
Neil