[PATCH v2 0/2] Add support for rm69299 Visionox panel driver and add devicetree bindings for visionox panel

[PATCH v2 0/2] Add support for rm69299 Visionox panel driver and add devicetree bindings for visionox panel

[Harigovindan P]

Current patchset adds support for rm69299 visionox panel driver used 
in MSM reference platforms. The visionox panel driver supports a 
resolution of 1080x2248 with 4 lanes and supports only single DSI mode.

Current patchset is tested on actual panel.

Changes in v1:
	-add devicetree bindings for visionox panel.
	-Split out panel driver patch from dsi config changes(Rob Clark).
        -Remove unrelated code(Stephen Boyd).
        -Remove static arrays to make regulator setup
         open coded in probe(Stephen Boyd).
        -Remove pre-assigning variables(Stephen Boyd).
        -Inline panel_add function into probe(Stephen Boyd).
        -Use mipi_dsi_dcs_write directly(Rob Clark).
	-Remove qcom_rm69299_1080p_panel_magic_cmds array(Rob Clark).
Changes in v2:
	-Removed unwanted properties from description.
	-Creating source files without execute permissions(Rob Herring).
	-Dropping redundant space in Kconfig(Sam Ravnborg).
	-Changing structure for include files(Sam Ravnborg).
	-Removing backlight related code and functions(Sam Ravnborg).
	-Removing repeated printing of error message(Sam Ravnborg).
	-Adding drm_connector as an argument for get_modes function.

Harigovindan P (2):
  dt-bindings: display: add sc7180 panel variant
  drm/panel: add support for rm69299 visionox panel driver

 .../bindings/display/visionox,rm69299.txt          |  48 +++
 drivers/gpu/drm/panel/Kconfig                      |   8 +
 drivers/gpu/drm/panel/Makefile                     |   1 +
 drivers/gpu/drm/panel/panel-visionox-rm69299.c     | 370 +++
 4 files changed, 427 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/display/visionox,rm69299.txt
 create mode 100644 drivers/gpu/drm/panel/panel-visionox-rm69299.c

-- 
2.7.4

[PATCH v2 1/2] dt-bindings: display: add sc7180 panel variant

[Harigovindan P]

Add a compatible string to support sc7180 panel version.

Changes in v1:
	-Added a compatible string to support sc7180 panel version.
Changes in v2:
	-Removed unwanted properties from description.
	-Creating source files without execute permissions(Rob Herring).

Signed-off-by: Harigovindan P <harigovi@codeaurora.org>
---
 .../bindings/display/visionox,rm69299.txt          | 48 ++++++++++++++++++++++
 1 file changed, 48 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/display/visionox,rm69299.txt

diff --git a/Documentation/devicetree/bindings/display/visionox,rm69299.txt b/Documentation/devicetree/bindings/display/visionox,rm69299.txt
new file mode 100644
index 0000000..d7bbd5f
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/visionox,rm69299.txt
@@ -0,0 +1,48 @@
+Visionox model RM69299 DSI display driver
+
+The Visionox RM69299 is a generic display driver, currently only configured
+for use in the 1080p display on the Qualcomm SC7180 MTP board.
+
+Required properties:
+- compatible: should be "visionox,rm69299-1080p-display"
+- vdda-supply: phandle of the regulator that provides the supply voltage
+  Power IC supply
+- vdd3p3-supply: phandle of the regulator that provides the supply voltage
+  Power IC supply
+- reset-gpios: phandle of gpio for reset line
+  This should be 8mA, gpio can be configured using mux, pinctrl, pinctrl-names
+  (active low)
+- ports: This device has one video port driven by one DSI. Their connections
+  are modeled using the OF graph bindings specified in
+  Documentation/devicetree/bindings/graph.txt.
+  - port@0: DSI input port driven by master DSI
+
+Example:
+
+	dsi@ae94000 {
+		panel@0 {
+			compatible = "visionox,rm69299-1080p-display";
+			reg = <0>;
+
+			vdda-supply = <&src_pp1800_l8c>;
+			vdd3p3-supply = <&src_pp2800_l18a>;
+
+			pinctrl-names = "default", "suspend";
+			pinctrl-0 = <&disp_pins_default>;
+			pinctrl-1 = <&disp_pins_default>;
+
+			reset-gpios = <&pm6150l_gpios 3 0>;
+
+			ports {
+				#address-cells = <1>;
+				#size-cells = <0>;
+				port@0 {
+					reg = <0>;
+					panel0_in: endpoint {
+						remote-endpoint = <&dsi0_out>;
+					};
+				};
+			};
+		};
+	};
-- 
2.7.4

[PATCH v2 2/2] drm/panel: add support for rm69299 visionox panel driver

[Harigovindan P]

Add support for Visionox panel driver.

Changes in v1:
	-Split out panel driver patch from dsi config changes(Rob Clark).
	-Remove unrelated code(Stephen Boyd).
	-Remove static arrays to make regulator setup open coded
	in probe(Stephen Boyd).
	-Remove pre-assigning variables(Stephen Boyd).
	-Inline panel_add function into probe(Stephen Boyd).
	-Use mipi_dsi_dcs_write directly(Rob Clark).
	-Remove qcom_rm69299_1080p_panel_magic_cmds array(Rob Clark).
Changes in v2:
	-Dropping redundant space in Kconfig(Sam Ravnborg).
	-Changing structure for include files(Sam Ravnborg).
	-Removing backlight related code and functions(Sam Ravnborg).
	-Removing repeated printing of error message(Sam Ravnborg).
	-Adding drm_connector as an argument for get_modes function.

Signed-off-by: Harigovindan P <harigovi@codeaurora.org>
---
 drivers/gpu/drm/panel/Kconfig                  |   8 +
 drivers/gpu/drm/panel/Makefile                 |   1 +
 drivers/gpu/drm/panel/panel-visionox-rm69299.c | 370 +++++++++++++++++++++++++
 3 files changed, 379 insertions(+)
 create mode 100644 drivers/gpu/drm/panel/panel-visionox-rm69299.c

diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig
index f152bc4..123481f 100644
--- a/drivers/gpu/drm/panel/Kconfig
+++ b/drivers/gpu/drm/panel/Kconfig
@@ -355,4 +355,12 @@ config DRM_PANEL_TRULY_NT35597_WQXGA
 	help
 	  Say Y here if you want to enable support for Truly NT35597 WQXGA Dual DSI
 	  Video Mode panel
+
+config DRM_PANEL_VISIONOX_RM69299
+	tristate "Visionox RM69299"
+	depends on OF
+	depends on DRM_MIPI_DSI
+	help
+	  Say Y here if you want to enable support for Visionox
+	  RM69299  DSI Video Mode panel.
 endmenu
diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile
index b6cd39f..6f1e4c6 100644
--- a/drivers/gpu/drm/panel/Makefile
+++ b/drivers/gpu/drm/panel/Makefile
@@ -38,3 +38,4 @@ obj-$(CONFIG_DRM_PANEL_TPO_TD028TTEC1) += panel-tpo-td028ttec1.o
 obj-$(CONFIG_DRM_PANEL_TPO_TD043MTEA1) += panel-tpo-td043mtea1.o
 obj-$(CONFIG_DRM_PANEL_TPO_TPG110) += panel-tpo-tpg110.o
 obj-$(CONFIG_DRM_PANEL_TRULY_NT35597_WQXGA) += panel-truly-nt35597.o
+obj-$(CONFIG_DRM_PANEL_VISIONOX_RM69299) += panel-visionox-rm69299.o
diff --git a/drivers/gpu/drm/panel/panel-visionox-rm69299.c b/drivers/gpu/drm/panel/panel-visionox-rm69299.c
new file mode 100644
index 0000000..3fa1cb4
--- /dev/null
+++ b/drivers/gpu/drm/panel/panel-visionox-rm69299.c
@@ -0,0 +1,370 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2019, The Linux Foundation. All rights reserved.
+ */
+
+#include <linux/delay.h>
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/gpio/consumer.h>
+#include <linux/regulator/consumer.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_print.h>
+
+struct rm69299_config {
+	unsigned long width_mm;
+	unsigned long height_mm;
+	const char *panel_name;
+	u32 num_on_cmds;
+	const struct drm_display_mode *dm;
+};
+
+struct visionox_rm69299 {
+	struct device *dev;
+	struct drm_panel panel;
+
+	struct regulator_bulk_data supplies[2];
+
+	struct gpio_desc *reset_gpio;
+
+	struct mipi_dsi_device *dsi;
+	const struct rm69299_config *config;
+	bool prepared;
+	bool enabled;
+};
+
+static inline struct visionox_rm69299 *panel_to_ctx(struct drm_panel *panel)
+{
+	return container_of(panel, struct visionox_rm69299, panel);
+}
+
+static int visionox_35597_power_on(struct visionox_rm69299 *ctx)
+{
+	int ret;
+
+	ret = regulator_set_load(ctx->supplies[0].consumer, 32000);
+	if (ret)
+		return ret;
+
+	ret = regulator_set_load(ctx->supplies[1].consumer, 13200);
+	if (ret)
+		return ret;
+
+	ret = regulator_bulk_enable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
+	if (ret < 0)
+		return ret;
+
+	/*
+	 * Reset sequence of visionox panel requires the panel to be
+	 * out of reset for 10ms, followed by being held in reset
+	 * for 10ms and then out again
+	 */
+	gpiod_set_value(ctx->reset_gpio, 1);
+	usleep_range(10000, 20000);
+	gpiod_set_value(ctx->reset_gpio, 0);
+	usleep_range(10000, 20000);
+	gpiod_set_value(ctx->reset_gpio, 1);
+	usleep_range(10000, 20000);
+
+	return 0;
+}
+
+static int visionox_rm69299_power_off(struct visionox_rm69299 *ctx)
+{
+	int ret;
+
+	gpiod_set_value(ctx->reset_gpio, 0);
+
+	ret = regulator_set_load(ctx->supplies[0].consumer, 80);
+
+	if (ret) {
+		DRM_DEV_ERROR(ctx->dev,
+			"regulator_set_load failed %d\n", ret);
+		return ret;
+	}
+
+	ret = regulator_set_load(ctx->supplies[1].consumer, 80);
+
+	if (ret) {
+		DRM_DEV_ERROR(ctx->dev,
+			"regulator_set_load failed %d\n", ret);
+		return ret;
+	}
+
+	ret = regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
+	if (ret) {
+		DRM_DEV_ERROR(ctx->dev,
+			"regulator_bulk_disable failed %d\n", ret);
+	}
+	return ret;
+}
+
+static int visionox_rm69299_unprepare(struct drm_panel *panel)
+{
+	struct visionox_rm69299 *ctx = panel_to_ctx(panel);
+	int ret;
+
+	if (!ctx->prepared)
+		return 0;
+
+	ctx->dsi->mode_flags = 0;
+
+	ret = mipi_dsi_dcs_write(ctx->dsi, MIPI_DCS_SET_DISPLAY_OFF, NULL, 0);
+	if (ret < 0) {
+		DRM_DEV_ERROR(ctx->dev,
+			"set_display_off cmd failed ret = %d\n",
+			ret);
+	}
+
+	/* 120ms delay required here as per DCS spec */
+	msleep(120);
+
+	ret = mipi_dsi_dcs_write(ctx->dsi, MIPI_DCS_ENTER_SLEEP_MODE, NULL, 0);
+	if (ret < 0) {
+		DRM_DEV_ERROR(ctx->dev,
+			"enter_sleep cmd failed ret = %d\n", ret);
+	}
+
+	ret = visionox_rm69299_power_off(ctx);
+
+	ctx->prepared = false;
+	return ret;
+}
+
+static int visionox_rm69299_prepare(struct drm_panel *panel)
+{
+	struct visionox_rm69299 *ctx = panel_to_ctx(panel);
+	int ret;
+	const struct rm69299_config *config;
+
+	if (ctx->prepared)
+		return 0;
+
+	ret = visionox_35597_power_on(ctx);
+	if (ret < 0)
+		return ret;
+
+	ctx->dsi->mode_flags |= MIPI_DSI_MODE_LPM;
+
+	config = ctx->config;
+
+	ret = mipi_dsi_dcs_write_buffer(ctx->dsi, (u8[]){ 0xfe, 0x00 }, 2);
+	if (ret < 0) {
+		DRM_DEV_ERROR(ctx->dev,
+		"cmd set tx 0 failed, ret = %d\n",
+		ret);
+		goto power_off;
+	}
+
+	ret = mipi_dsi_dcs_write_buffer(ctx->dsi, (u8[]){ 0xc2, 0x08 }, 2);
+	if (ret < 0) {
+		DRM_DEV_ERROR(ctx->dev,
+		"cmd set tx 1 failed, ret = %d\n",
+		ret);
+		goto power_off;
+	}
+
+	ret = mipi_dsi_dcs_write_buffer(ctx->dsi, (u8[]){ 0x35, 0x00 }, 2);
+	if (ret < 0) {
+		DRM_DEV_ERROR(ctx->dev,
+		"cmd set tx 2 failed, ret = %d\n",
+		ret);
+		goto power_off;
+	}
+
+	ret = mipi_dsi_dcs_write_buffer(ctx->dsi, (u8[]){ 0x51, 0xff }, 2);
+	if (ret < 0) {
+		DRM_DEV_ERROR(ctx->dev,
+		"cmd set tx 3 failed, ret = %d\n",
+		ret);
+		goto power_off;
+	}
+
+	ret = mipi_dsi_dcs_write(ctx->dsi, MIPI_DCS_EXIT_SLEEP_MODE, NULL, 0);
+	if (ret < 0) {
+		DRM_DEV_ERROR(ctx->dev,
+			"exit_sleep_mode cmd failed ret = %d\n",
+			ret);
+		goto power_off;
+	}
+
+	/* Per DSI spec wait 120ms after sending exit sleep DCS command */
+	msleep(120);
+
+	ret = mipi_dsi_dcs_write(ctx->dsi, MIPI_DCS_SET_DISPLAY_ON, NULL, 0);
+	if (ret < 0) {
+		DRM_DEV_ERROR(ctx->dev,
+			"set_display_on cmd failed ret = %d\n", ret);
+		goto power_off;
+	}
+
+	/* Per DSI spec wait 120ms after sending set_display_on DCS command */
+	msleep(120);
+
+	ctx->prepared = true;
+
+	return 0;
+
+power_off:
+	ret = visionox_rm69299_power_off(ctx);
+	return ret;
+}
+
+static int visionox_rm69299_get_modes(struct drm_panel *panel,
+				      struct drm_connector *connector)
+{
+	struct visionox_rm69299 *ctx = panel_to_ctx(panel);
+	struct drm_display_mode *mode;
+	const struct rm69299_config *config;
+
+	config = ctx->config;
+	mode = drm_mode_create(connector->dev);
+	if (!mode) {
+		DRM_DEV_ERROR(ctx->dev,
+			"failed to create a new display mode\n");
+		return 0;
+	}
+
+	connector->display_info.width_mm = config->width_mm;
+	connector->display_info.height_mm = config->height_mm;
+	drm_mode_copy(mode, config->dm);
+	mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
+	drm_mode_probed_add(connector, mode);
+
+	return 1;
+}
+
+static const struct drm_panel_funcs visionox_rm69299_drm_funcs = {
+	.unprepare = visionox_rm69299_unprepare,
+	.prepare = visionox_rm69299_prepare,
+	.get_modes = visionox_rm69299_get_modes,
+};
+
+static const struct drm_display_mode qcom_sc7180_mtp_1080p_mode = {
+	.name = "1080x2248",
+	.clock = 158695,
+	.hdisplay = 1080,
+	.hsync_start = 1080 + 26,
+	.hsync_end = 1080 + 26 + 2,
+	.htotal = 1080 + 26 + 2 + 36,
+	.vdisplay = 2248,
+	.vsync_start = 2248 + 56,
+	.vsync_end = 2248 + 56 + 4,
+	.vtotal = 2248 + 56 + 4 + 4,
+	.vrefresh = 60,
+	.flags = 0,
+};
+
+static const struct rm69299_config rm69299_dir = {
+	.width_mm = 74,
+	.height_mm = 131,
+	.panel_name = "qcom_sc7180_mtp_1080p_panel",
+	.dm = &qcom_sc7180_mtp_1080p_mode,
+};
+
+static int visionox_rm69299_probe(struct mipi_dsi_device *dsi)
+{
+	struct device *dev = &dsi->dev;
+	struct device *device;
+	struct visionox_rm69299 *ctx;
+	const struct rm69299_config *config;
+	int ret;
+
+	ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
+
+	if (!ctx)
+		return -ENOMEM;
+
+	ctx->config = device_get_match_data(dev);
+
+	if (!ctx->config) {
+		dev_err(dev, "missing device configuration\n");
+		return -ENODEV;
+	}
+
+	mipi_dsi_set_drvdata(dsi, ctx);
+
+	ctx->dev = dev;
+	ctx->dsi = dsi;
+
+	device = ctx->dev;
+
+	config = ctx->config;
+	ctx->supplies[0].supply = "vdda";
+	ctx->supplies[1].supply = "vdd3p3";
+
+	ret = devm_regulator_bulk_get(device, ARRAY_SIZE(ctx->supplies),
+								ctx->supplies);
+	if (ret < 0)
+		return ret;
+
+	ctx->reset_gpio = devm_gpiod_get(device, "reset", GPIOD_OUT_LOW);
+	if (IS_ERR(ctx->reset_gpio)) {
+		DRM_DEV_ERROR(dev, "cannot get reset gpio %ld\n",
+					PTR_ERR(ctx->reset_gpio));
+		return PTR_ERR(ctx->reset_gpio);
+	}
+
+	drm_panel_init(&ctx->panel);
+	ctx->panel.dev = device;
+	ctx->panel.funcs = &visionox_rm69299_drm_funcs;
+	drm_panel_add(&ctx->panel);
+
+	dsi->lanes = 4;
+	dsi->format = MIPI_DSI_FMT_RGB888;
+	dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_LPM |
+		MIPI_DSI_CLOCK_NON_CONTINUOUS;
+	ret = mipi_dsi_attach(dsi);
+	if (ret < 0) {
+		DRM_DEV_ERROR(dev,
+			"dsi attach failed ret = %d\n", ret);
+		goto err_dsi_attach;
+	}
+
+	return 0;
+
+err_dsi_attach:
+	drm_panel_remove(&ctx->panel);
+	return ret;
+}
+
+static int visionox_rm69299_remove(struct mipi_dsi_device *dsi)
+{
+	struct visionox_rm69299 *ctx = mipi_dsi_get_drvdata(dsi);
+
+	if (ctx->dsi) {
+		mipi_dsi_detach(ctx->dsi);
+		mipi_dsi_device_unregister(ctx->dsi);
+	}
+
+	drm_panel_remove(&ctx->panel);
+	return 0;
+}
+
+static const struct of_device_id visionox_rm69299_of_match[] = {
+	{
+		.compatible = "visionox,rm69299-1080p-display",
+		.data = &rm69299_dir,
+	},
+	{ /* */ }
+};
+MODULE_DEVICE_TABLE(of, visionox_rm69299_of_match);
+
+static struct mipi_dsi_driver visionox_rm69299_driver = {
+	.driver = {
+		.name = "panel-visionox-rm69299",
+		.of_match_table = visionox_rm69299_of_match,
+	},
+	.probe = visionox_rm69299_probe,
+	.remove = visionox_rm69299_remove,
+};
+module_mipi_dsi_driver(visionox_rm69299_driver);
+
+MODULE_DESCRIPTION("VISIONOX RM69299 DSI Panel Driver");
+MODULE_LICENSE("GPL v2");
-- 
2.7.4

Re: [PATCH v2 1/2] dt-bindings: display: add sc7180 panel variant

[Rob Herring]

On Tue, Jan 07, 2020 at 04:59:56PM +0530, Harigovindan P wrote:
> Add a compatible string to support sc7180 panel version.
> 
> Changes in v1:
> 	-Added a compatible string to support sc7180 panel version.
> Changes in v2:
> 	-Removed unwanted properties from description.
> 	-Creating source files without execute permissions(Rob Herring).
> 
> Signed-off-by: Harigovindan P <harigovi@codeaurora.org>
> ---
>  .../bindings/display/visionox,rm69299.txt          | 48 ++++++++++++++++++++++
>  1 file changed, 48 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/display/visionox,rm69299.txt

As I send in v1, please make this a DT schema. See 
Documentation/devicetree/writing-schema.rst.

Rob

Re: [PATCH v2 2/2] drm/panel: add support for rm69299 visionox panel driver

[Doug Anderson]

Hi,

On Tue, Jan 7, 2020 at 3:30 AM Harigovindan P <harigovi@codeaurora.org> wrote:
>
> +       drm_panel_init(&ctx->panel);
> +       ctx->panel.dev = device;
> +       ctx->panel.funcs = &visionox_rm69299_drm_funcs;

I haven't reviewed your whole panel driver, but I did just try to
compile it and found that it won't compile against mainline.  Namely
this needs to be changed to:

drm_panel_init(&ctx->panel, dev, &visionox_rm69299_drm_funcs,
       DRM_MODE_CONNECTOR_DSI);

...because of commit 6dbe0c4b0fc0 ("drm/panel: Initialise panel dev
and funcs through drm_panel_init()") and commit 9a2654c0f62a
("drm/panel: Add and fill drm_panel type field")

-Doug

Re: [PATCH v2 1/2] dt-bindings: display: add sc7180 panel variant

[Matthias Kaehlcke]

Hi,

On Tue, Jan 07, 2020 at 04:59:56PM +0530, Harigovindan P wrote:
> Subject: dt-bindings: display: add sc7180 panel variant
>
> Add a compatible string to support sc7180 panel version.

The sc7180 is a SoC, I suppose you are referring to the sc7180-idp, a
board based on this SoC. But even with the correct board name, this
isn't a good commit message. The board is irrelevant here, the display
could be used on dozens of other boards.

Apparently the panel is the Visionix RM69299, please use this instead
of 'sc7180'.

Thanks

Matthias

> Changes in v1:
> 	-Added a compatible string to support sc7180 panel version.
> Changes in v2:
> 	-Removed unwanted properties from description.
> 	-Creating source files without execute permissions(Rob Herring).
> 
> Signed-off-by: Harigovindan P <harigovi@codeaurora.org>
> ---
>  .../bindings/display/visionox,rm69299.txt          | 48 ++++++++++++++++++++++
>  1 file changed, 48 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/display/visionox,rm69299.txt
> 
> diff --git a/Documentation/devicetree/bindings/display/visionox,rm69299.txt b/Documentation/devicetree/bindings/display/visionox,rm69299.txt
> new file mode 100644
> index 0000000..d7bbd5f
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/display/visionox,rm69299.txt
> @@ -0,0 +1,48 @@
> +Visionox model RM69299 DSI display driver
> +
> +The Visionox RM69299 is a generic display driver, currently only configured
> +for use in the 1080p display on the Qualcomm SC7180 MTP board.
> +
> +Required properties:
> +- compatible: should be "visionox,rm69299-1080p-display"
> +- vdda-supply: phandle of the regulator that provides the supply voltage
> +  Power IC supply
> +- vdd3p3-supply: phandle of the regulator that provides the supply voltage
> +  Power IC supply
> +- reset-gpios: phandle of gpio for reset line
> +  This should be 8mA, gpio can be configured using mux, pinctrl, pinctrl-names
> +  (active low)
> +- ports: This device has one video port driven by one DSI. Their connections
> +  are modeled using the OF graph bindings specified in
> +  Documentation/devicetree/bindings/graph.txt.
> +  - port@0: DSI input port driven by master DSI
> +
> +Example:
> +
> +	dsi@ae94000 {
> +		panel@0 {
> +			compatible = "visionox,rm69299-1080p-display";
> +			reg = <0>;
> +
> +			vdda-supply = <&src_pp1800_l8c>;
> +			vdd3p3-supply = <&src_pp2800_l18a>;
> +
> +			pinctrl-names = "default", "suspend";
> +			pinctrl-0 = <&disp_pins_default>;
> +			pinctrl-1 = <&disp_pins_default>;
> +
> +			reset-gpios = <&pm6150l_gpios 3 0>;
> +
> +			ports {
> +				#address-cells = <1>;
> +				#size-cells = <0>;
> +				port@0 {
> +					reg = <0>;
> +					panel0_in: endpoint {
> +						remote-endpoint = <&dsi0_out>;
> +					};
> +				};
> +			};
> +		};
> +	};
> -- 
> 2.7.4
>