[PATCH 0/2] BOE TD4320 panel

[PATCH 0/2] BOE TD4320 panel

[Barnabás Czémán]

Add driver for BOE TD4320 DSI panel, used in Xiaomi Redmi Note 7
smartphones.

Signed-off-by: Barnabás Czémán <barnabas.czeman@mainlining.org>
---
Barnabás Czémán (2):
      dt-bindings: display: panel: Add BOE TD4320
      drivers: gpu: drm: panel: Add BOE TD4320

 .../bindings/display/panel/boe,td4320.yaml         |  55 +++++
 drivers/gpu/drm/panel/Kconfig                      |   9 +
 drivers/gpu/drm/panel/Makefile                     |   1 +
 drivers/gpu/drm/panel/panel-boe-td4320.c           | 224 +++++++++++++++++++++
 4 files changed, 289 insertions(+)
---
base-commit: 393d0c54cae31317deaa9043320c5fd9454deabc
change-id: 20250426-lavender-panel-2f144429cc1b

Best regards,
-- 
Barnabás Czémán <barnabas.czeman@mainlining.org>

[PATCH 1/2] dt-bindings: display: panel: Add BOE TD4320

[Barnabás Czémán]

Document BOE TD4320 6.3" 2340x1080 panel
found in Xiaomi Redmi Note 7 smartphone.

Signed-off-by: Barnabás Czémán <barnabas.czeman@mainlining.org>
---
 .../bindings/display/panel/boe,td4320.yaml         | 55 ++++++++++++++++++++++
 1 file changed, 55 insertions(+)

diff --git a/Documentation/devicetree/bindings/display/panel/boe,td4320.yaml b/Documentation/devicetree/bindings/display/panel/boe,td4320.yaml
new file mode 100644
index 0000000000000000000000000000000000000000..65da1c392cafbb7cd3ce32e347fba1b9244c1ad8
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/panel/boe,td4320.yaml
@@ -0,0 +1,55 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/panel/boe,td4320.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: BOE TD4320 MIPI-DSI panels
+
+maintainers:
+  - Barnabas Czeman <barnabas.czeman@mainlining.org>
+
+description:
+  BOE TD4320 6.3" 1080x2340 panel found in Xiaomi Redmi Note 7 smartphone.
+
+allOf:
+  - $ref: panel-common.yaml#
+
+properties:
+  compatible:
+    items:
+      - const: boe,td4320
+
+  reg:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+  - reset-gpios
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+
+    dsi {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        panel@0 {
+            compatible = "boe,td4320";
+            reg = <0>;
+            backlight = <&backlight>;
+            reset-gpios = <&tlmm 45 GPIO_ACTIVE_LOW>;
+
+            port {
+                panel_in: endpoint {
+                    remote-endpoint = <&dsi_out>;
+                };
+            };
+        };
+    };
+
+...

-- 
2.49.0

Re: [PATCH 1/2] dt-bindings: display: panel: Add BOE TD4320

[Krzysztof Kozlowski]

On Sun, Apr 27, 2025 at 11:11:11AM GMT, Barnabás Czémán wrote:
> Document BOE TD4320 6.3" 2340x1080 panel
> found in Xiaomi Redmi Note 7 smartphone.
> 
> Signed-off-by: Barnabás Czémán <barnabas.czeman@mainlining.org>
> ---
>  .../bindings/display/panel/boe,td4320.yaml         | 55 ++++++++++++++++++++++
>  1 file changed, 55 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/display/panel/boe,td4320.yaml b/Documentation/devicetree/bindings/display/panel/boe,td4320.yaml
> new file mode 100644
> index 0000000000000000000000000000000000000000..65da1c392cafbb7cd3ce32e347fba1b9244c1ad8
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/display/panel/boe,td4320.yaml
> @@ -0,0 +1,55 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/display/panel/boe,td4320.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: BOE TD4320 MIPI-DSI panels
> +
> +maintainers:
> +  - Barnabas Czeman <barnabas.czeman@mainlining.org>
> +
> +description:
> +  BOE TD4320 6.3" 1080x2340 panel found in Xiaomi Redmi Note 7 smartphone.
> +
> +allOf:
> +  - $ref: panel-common.yaml#
> +
> +properties:
> +  compatible:
> +    items:
> +      - const: boe,td4320
> +
> +  reg:
> +    maxItems: 1

No supplies?

> +
> +required:
> +  - compatible
> +  - reg
> +  - reset-gpios

No supplies? This looks really incomplete.


Best regards,
Krzysztof

Re: [PATCH 1/2] dt-bindings: display: panel: Add BOE TD4320

[barnabas.czeman]

On 2025-04-28 11:22, Krzysztof Kozlowski wrote:
> On Sun, Apr 27, 2025 at 11:11:11AM GMT, Barnabás Czémán wrote:
>> Document BOE TD4320 6.3" 2340x1080 panel
>> found in Xiaomi Redmi Note 7 smartphone.
>> 
>> Signed-off-by: Barnabás Czémán <barnabas.czeman@mainlining.org>
>> ---
>>  .../bindings/display/panel/boe,td4320.yaml         | 55 
>> ++++++++++++++++++++++
>>  1 file changed, 55 insertions(+)
>> 
>> diff --git 
>> a/Documentation/devicetree/bindings/display/panel/boe,td4320.yaml 
>> b/Documentation/devicetree/bindings/display/panel/boe,td4320.yaml
>> new file mode 100644
>> index 
>> 0000000000000000000000000000000000000000..65da1c392cafbb7cd3ce32e347fba1b9244c1ad8
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/display/panel/boe,td4320.yaml
>> @@ -0,0 +1,55 @@
>> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
>> +%YAML 1.2
>> +---
>> +$id: http://devicetree.org/schemas/display/panel/boe,td4320.yaml#
>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
>> +
>> +title: BOE TD4320 MIPI-DSI panels
>> +
>> +maintainers:
>> +  - Barnabas Czeman <barnabas.czeman@mainlining.org>
>> +
>> +description:
>> +  BOE TD4320 6.3" 1080x2340 panel found in Xiaomi Redmi Note 7 
>> smartphone.
>> +
>> +allOf:
>> +  - $ref: panel-common.yaml#
>> +
>> +properties:
>> +  compatible:
>> +    items:
>> +      - const: boe,td4320
>> +
>> +  reg:
>> +    maxItems: 1
> 
> No supplies?
> 
>> +
>> +required:
>> +  - compatible
>> +  - reg
>> +  - reset-gpios
> 
> No supplies? This looks really incomplete.
It works without supplies because BL is enabling them and there is no 
qpnp-lcdb driver yet.
I do not see worth to add them at them moment but I can if you want.
> 
> 
> Best regards,
> Krzysztof

Re: [PATCH 1/2] dt-bindings: display: panel: Add BOE TD4320

[Krzysztof Kozlowski]

On 28/04/2025 20:13, barnabas.czeman@mainlining.org wrote:
>>
>>> +
>>> +required:
>>> +  - compatible
>>> +  - reg
>>> +  - reset-gpios
>>
>> No supplies? This looks really incomplete.
> It works without supplies because BL is enabling them and there is no 
> qpnp-lcdb driver yet.

If something enables the supplies, means they exist. Binding must be
complete. Otherwise how bootloader using this binding can enable
supplies, if you do not allow them in the DTS the bootloader is going to
use?

> I do not see worth to add them at them moment but I can if you want.
>>
>>
>> Best regards,
>> Krzysztof


Best regards,
Krzysztof

[PATCH 2/2] drivers: gpu: drm: panel: Add BOE TD4320

[Barnabás Czémán]

Add driver for BOE TD4320 DSI panel, used in Xiaomi Redmi Note 7
mobile phone.

Signed-off-by: Barnabás Czémán <barnabas.czeman@mainlining.org>
---
 drivers/gpu/drm/panel/Kconfig            |   9 ++
 drivers/gpu/drm/panel/Makefile           |   1 +
 drivers/gpu/drm/panel/panel-boe-td4320.c | 224 +++++++++++++++++++++++++++++++
 3 files changed, 234 insertions(+)

diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig
index 7e9c60a626fbbabb954ed2a7e3d1ef5eee0679d6..639f4324db617a0a2a56debd75eeca7a50e60df6 100644
--- a/drivers/gpu/drm/panel/Kconfig
+++ b/drivers/gpu/drm/panel/Kconfig
@@ -67,6 +67,15 @@ config DRM_PANEL_BOE_HIMAX8279D
 	  24 bit RGB per pixel. It provides a MIPI DSI interface to
 	  the host and has a built-in LED backlight.
 
+config DRM_PANEL_BOE_TD4320
+	tristate "BOE TD4320 DSI panel"
+	depends on OF
+	depends on DRM_MIPI_DSI
+	depends on BACKLIGHT_CLASS_DEVICE
+	help
+	  Say Y here if you want to enable support for BOE TD4320 1080x2340
+	  video mode panel found in Xiaomi Redmi Note 7 smartphones.
+
 config DRM_PANEL_BOE_TH101MB31UIG002_28A
 	tristate "Boe TH101MB31UIG002-28A panel"
 	depends on OF
diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile
index 883974f0cba128e28f23e31512f8d30d59913b0e..5eec88e4ac3dea6a1cb357e27a32d2d14c64af9b 100644
--- a/drivers/gpu/drm/panel/Makefile
+++ b/drivers/gpu/drm/panel/Makefile
@@ -5,6 +5,7 @@ obj-$(CONFIG_DRM_PANEL_ASUS_Z00T_TM5P5_NT35596) += panel-asus-z00t-tm5p5-n35596.
 obj-$(CONFIG_DRM_PANEL_AUO_A030JTN01) += panel-auo-a030jtn01.o
 obj-$(CONFIG_DRM_PANEL_BOE_BF060Y8M_AJ0) += panel-boe-bf060y8m-aj0.o
 obj-$(CONFIG_DRM_PANEL_BOE_HIMAX8279D) += panel-boe-himax8279d.o
+obj-$(CONFIG_DRM_PANEL_BOE_TD4320) += panel-boe-td4320.o
 obj-$(CONFIG_DRM_PANEL_BOE_TH101MB31UIG002_28A) += panel-boe-th101mb31ig002-28a.o
 obj-$(CONFIG_DRM_PANEL_BOE_TV101WUM_LL2) += panel-boe-tv101wum-ll2.o
 obj-$(CONFIG_DRM_PANEL_BOE_TV101WUM_NL6) += panel-boe-tv101wum-nl6.o
diff --git a/drivers/gpu/drm/panel/panel-boe-td4320.c b/drivers/gpu/drm/panel/panel-boe-td4320.c
new file mode 100644
index 0000000000000000000000000000000000000000..697f10fd2aa4c7a46496890a2a2baa74a072dae5
--- /dev/null
+++ b/drivers/gpu/drm/panel/panel-boe-td4320.c
@@ -0,0 +1,224 @@
+// SPDX-License-Identifier: GPL-2.0-only
+// Copyright (c) 2024 Barnabas Czeman <barnabas.czeman@mainlining.org>
+// Generated with linux-mdss-dsi-panel-driver-generator from vendor device tree:
+//   Copyright (c) 2013, The Linux Foundation. All rights reserved.
+
+#include <linux/delay.h>
+#include <linux/gpio/consumer.h>
+#include <linux/mod_devicetable.h>
+#include <linux/module.h>
+
+#include <video/mipi_display.h>
+
+#include <drm/drm_mipi_dsi.h>
+#include <drm/drm_modes.h>
+#include <drm/drm_panel.h>
+#include <drm/drm_probe_helper.h>
+
+struct boe_td4320 {
+	struct drm_panel panel;
+	struct mipi_dsi_device *dsi;
+	struct gpio_desc *reset_gpio;
+};
+
+static inline struct boe_td4320 *to_boe_td4320(struct drm_panel *panel)
+{
+	return container_of(panel, struct boe_td4320, panel);
+}
+
+static void boe_td4320_reset(struct boe_td4320 *ctx)
+{
+	gpiod_set_value_cansleep(ctx->reset_gpio, 0);
+	usleep_range(1000, 2000);
+	gpiod_set_value_cansleep(ctx->reset_gpio, 1);
+	usleep_range(5000, 6000);
+	gpiod_set_value_cansleep(ctx->reset_gpio, 0);
+	msleep(30);
+}
+
+static int boe_td4320_on(struct boe_td4320 *ctx)
+{
+	struct mipi_dsi_multi_context dsi_ctx = { .dsi = ctx->dsi };
+
+	ctx->dsi->mode_flags |= MIPI_DSI_MODE_LPM;
+
+	mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0xb0, 0x04);
+	mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0xd6, 0x00);
+	mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0xb8,
+					 0x19, 0x55, 0x00, 0xbe, 0x00, 0x00,
+					 0x00);
+	mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0xb9,
+					 0x4d, 0x55, 0x05, 0xe6, 0x00, 0x02,
+					 0x03);
+	mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0xba,
+					 0x9b, 0x5b, 0x07, 0xe6, 0x00, 0x13,
+					 0x00);
+	mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0xf9,
+					 0x44, 0x3f, 0x00, 0x8d, 0xbf);
+	mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0xce,
+					 0x5d, 0x00, 0x0f, 0x1f, 0x2f, 0x3f,
+					 0x4f, 0x5f, 0x6f, 0x7f, 0x8f, 0x9f,
+					 0xaf, 0xbf, 0xcf, 0xdf, 0xef, 0xff,
+					 0x04, 0x00, 0x02, 0x02, 0x42, 0x01,
+					 0x69, 0x5a, 0x40, 0x40, 0x00, 0x00,
+					 0x04, 0xfa, 0x00);
+	mipi_dsi_dcs_set_display_brightness_multi(&dsi_ctx, 0x00b8);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, MIPI_DCS_WRITE_CONTROL_DISPLAY,
+				     0x2c);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, MIPI_DCS_WRITE_POWER_SAVE, 0x00);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xb0, 0x03);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x11, 0x00);
+	mipi_dsi_msleep(&dsi_ctx, 96);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x29, 0x00);
+	mipi_dsi_msleep(&dsi_ctx, 20);
+
+	return dsi_ctx.accum_err;
+}
+
+static int boe_td4320_off(struct boe_td4320 *ctx)
+{
+	struct mipi_dsi_multi_context dsi_ctx = { .dsi = ctx->dsi };
+
+	ctx->dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
+
+	mipi_dsi_dcs_set_display_off_multi(&dsi_ctx);
+	mipi_dsi_msleep(&dsi_ctx, 20);
+	mipi_dsi_dcs_enter_sleep_mode_multi(&dsi_ctx);
+	mipi_dsi_msleep(&dsi_ctx, 120);
+
+	return dsi_ctx.accum_err;
+}
+
+static int boe_td4320_prepare(struct drm_panel *panel)
+{
+	struct boe_td4320 *ctx = to_boe_td4320(panel);
+	struct device *dev = &ctx->dsi->dev;
+	int ret;
+
+	boe_td4320_reset(ctx);
+
+	ret = boe_td4320_on(ctx);
+	if (ret < 0) {
+		dev_err(dev, "Failed to initialize panel: %d\n", ret);
+		gpiod_set_value_cansleep(ctx->reset_gpio, 1);
+		return ret;
+	}
+
+	return 0;
+}
+
+static int boe_td4320_unprepare(struct drm_panel *panel)
+{
+	struct boe_td4320 *ctx = to_boe_td4320(panel);
+	struct device *dev = &ctx->dsi->dev;
+	int ret;
+
+	ret = boe_td4320_off(ctx);
+	if (ret < 0)
+		dev_err(dev, "Failed to un-initialize panel: %d\n", ret);
+
+	gpiod_set_value_cansleep(ctx->reset_gpio, 1);
+
+	return 0;
+}
+
+static const struct drm_display_mode boe_td4320_mode = {
+	.clock = (1080 + 86 + 2 + 100) * (2340 + 4 + 4 + 60) * 60 / 1000,
+	.hdisplay = 1080,
+	.hsync_start = 1080 + 86,
+	.hsync_end = 1080 + 86 + 2,
+	.htotal = 1080 + 86 + 2 + 100,
+	.vdisplay = 2340,
+	.vsync_start = 2340 + 4,
+	.vsync_end = 2340 + 4 + 4,
+	.vtotal = 2340 + 4 + 4 + 60,
+	.width_mm = 67,
+	.height_mm = 145,
+	.type = DRM_MODE_TYPE_DRIVER,
+};
+
+static int boe_td4320_get_modes(struct drm_panel *panel,
+				struct drm_connector *connector)
+{
+	return drm_connector_helper_get_modes_fixed(connector, &boe_td4320_mode);
+}
+
+static const struct drm_panel_funcs boe_td4320_panel_funcs = {
+	.prepare = boe_td4320_prepare,
+	.unprepare = boe_td4320_unprepare,
+	.get_modes = boe_td4320_get_modes,
+};
+
+static int boe_td4320_probe(struct mipi_dsi_device *dsi)
+{
+	struct device *dev = &dsi->dev;
+	struct boe_td4320 *ctx;
+	int ret;
+
+	ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
+	if (!ctx)
+		return -ENOMEM;
+
+	ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
+	if (IS_ERR(ctx->reset_gpio))
+		return dev_err_probe(dev, PTR_ERR(ctx->reset_gpio),
+				     "Failed to get reset-gpios\n");
+
+	ctx->dsi = dsi;
+	mipi_dsi_set_drvdata(dsi, ctx);
+
+	dsi->lanes = 4;
+	dsi->format = MIPI_DSI_FMT_RGB888;
+	dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST |
+			  MIPI_DSI_CLOCK_NON_CONTINUOUS;
+
+	drm_panel_init(&ctx->panel, dev, &boe_td4320_panel_funcs,
+		       DRM_MODE_CONNECTOR_DSI);
+	ctx->panel.prepare_prev_first = true;
+
+	ret = drm_panel_of_backlight(&ctx->panel);
+	if (ret)
+		return dev_err_probe(dev, ret, "Failed to get backlight\n");
+
+	drm_panel_add(&ctx->panel);
+
+	ret = mipi_dsi_attach(dsi);
+	if (ret < 0) {
+		drm_panel_remove(&ctx->panel);
+		return dev_err_probe(dev, ret, "Failed to attach to DSI host\n");
+	}
+
+	return 0;
+}
+
+static void boe_td4320_remove(struct mipi_dsi_device *dsi)
+{
+	struct boe_td4320 *ctx = mipi_dsi_get_drvdata(dsi);
+	int ret;
+
+	ret = mipi_dsi_detach(dsi);
+	if (ret < 0)
+		dev_err(&dsi->dev, "Failed to detach from DSI host: %d\n", ret);
+
+	drm_panel_remove(&ctx->panel);
+}
+
+static const struct of_device_id boe_td4320_of_match[] = {
+	{ .compatible = "boe,td4320" },
+	{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, boe_td4320_of_match);
+
+static struct mipi_dsi_driver boe_td4320_driver = {
+	.probe = boe_td4320_probe,
+	.remove = boe_td4320_remove,
+	.driver = {
+		.name = "panel-boe-td4320",
+		.of_match_table = boe_td4320_of_match,
+	},
+};
+module_mipi_dsi_driver(boe_td4320_driver);
+
+MODULE_AUTHOR("Barnabas Czeman <barnabas.czeman@mainlining.org>");
+MODULE_DESCRIPTION("DRM driver for boe td4320 fhdplus video mode dsi panel");
+MODULE_LICENSE("GPL");

-- 
2.49.0