1503142_zh-CN

[#1]

LT9611UXC i.MX8 演示板

任何想要使用该解决方案的人都应从 Lontium 获取参考设计和固件。

硬件

以下是 LT9611UXC 演示板的框图。

由于我们的EVK的MIPI端口可以提供5V、3V3和1V8电压，因此我们可以从参考设计中移除无用的DC-DC芯片。

BD_LT9611UXC.png

下面是 LT9611UXC 演示板。

LT9611UXC_DEMO_BOARD.jpg

软件

将固件下载到 LT9611UXC 中。在 Linux 端，我们需要驱动 MIPI 以输出 1080P 标准时序的信号。

面板类型

diff --git a/arch/arm64/boot/dts/freescale/imx8mp-evk.dts b/arch/arm64/boot/dts/freescale/imx8mp-evk.dts
index 1732b5c72380..c6a829be541f 100644
--- a/arch/arm64/boot/dts/freescale/imx8mp-evk.dts
+++ b/arch/arm64/boot/dts/freescale/imx8mp-evk.dts
@@ -696,13 +716,17 @@ &ldb_phy {
 
 &mipi_dsi {
 	status = "okay";

+	panel@0{
+		compatible = "nxp,lt9611uxc";
+		reg = <0>;
+		status = "okay";

 	};
 };
 
 &snvs_pwrkey {
diff --git a/drivers/gpu/drm/panel/panel-simple.c b/drivers/gpu/drm/panel/panel-simple.c
index 4f78bbf63f33..90d99f12515b 100644
--- a/drivers/gpu/drm/panel/panel-simple.c
+++ b/drivers/gpu/drm/panel/panel-simple.c
@@ -4997,6 +4997,34 @@ struct panel_desc_dsi {
 	unsigned int lanes;
 };
 
+static const struct drm_display_mode lt9611_panel_mode = {
+	.clock = 148500,
+	.hdisplay = 1920,
+	.hsync_start = 1920 + 88,
+	.hsync_end = 1920 + 88 + 44,
+	.htotal = 1920 + 88 + 44 + 148,
+	.vdisplay = 1080,
+	.vsync_start = 1080 + 4,
+	.vsync_end = 1080 + 4 + 5,
+	.vtotal = 1080 + 4 + 5 + 36,
+};
+
+static const struct panel_desc_dsi lt9611_panel = {
+	.desc = {
+		.modes = &lt9611_panel_mode,
+		.num_modes = 1,
+		.bpc = 8,
+		.size = {
+			.width = 62,
+			.height = 110,
+		},
+		.connector_type = DRM_MODE_CONNECTOR_DSI,
+	},
+	.flags = MIPI_DSI_MODE_VIDEO_HSE | MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_NO_EOT_PACKET | MIPI_DSI_MODE_VIDEO_SYNC_PULSE,
+	.format = MIPI_DSI_FMT_RGB888,
+	.lanes = 4,
+};
+
 static const struct drm_display_mode auo_b080uan01_mode = {
 	.clock = 154500,
 	.hdisplay = 1200,
@@ -5201,6 +5229,9 @@ static const struct panel_desc_dsi osd101t2045_53ts = {
 
 static const struct of_device_id dsi_of_match[] = {
 	{
+		.compatible = "nxp,lt9611uxc",
+		.data = &lt9611_panel,
+	},{
 		.compatible = "auo,b080uan01",
 		.data = &auo_b080uan01
 	}, {

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