The YLM-LBV0345001H-V2 panel is a display panel used in the recent
revision of Anbernic RG35XX Plus, a handheld gaming device from Anbernic.
It is 3.45 inches in size (diagonally) with a resolution of 640x480.

It has the same interface (pins and connector) as WL-355608-A8, the panel
of the former revision of RG35XX Plus, but they differ on its
init-sequence. So add entry for the new panel.

Signed-off-by: Hironori KIKUCHI <kikuchan98@gmail.com>
---
 .../gpu/drm/panel/panel-newvision-nv3052c.c   | 177 ++++++++++++++++++
 1 file changed, 177 insertions(+)

diff --git a/drivers/gpu/drm/panel/panel-newvision-nv3052c.c b/drivers/gpu/drm/panel/panel-newvision-nv3052c.c
index 2f3a8eaade4..57f6d5b1288 100644
--- a/drivers/gpu/drm/panel/panel-newvision-nv3052c.c
+++ b/drivers/gpu/drm/panel/panel-newvision-nv3052c.c
@@ -629,6 +629,155 @@ static const struct nv3052c_reg wl_355608_a8_panel_regs[] = {
 	{ 0x36, 0x0a }, // bgr = 1, ss = 1, gs = 0
 };
 
+static const struct nv3052c_reg ylm_lbv0345001h_v2_panel_regs[] = {
+	// EXTC Command set enable, select page 1
+	{ 0xff, 0x30 }, { 0xff, 0x52 }, { 0xff, 0x01 },
+	// Mostly unknown registers
+	{ 0xe3, 0x00 },
+	{ 0x0a, 0x01 },
+	{ 0x23, 0xa0 },
+	{ 0x24, 0x10 },
+	{ 0x25, 0x09 },
+	{ 0x28, 0x47 },
+	{ 0x29, 0x01 },
+	{ 0x2a, 0xdf },
+	{ 0x38, 0x9c },
+	{ 0x39, 0xa7 },
+	{ 0x3a, 0x3f },
+	{ 0x91, 0x77 },
+	{ 0x92, 0x77 },
+	{ 0xa0, 0x55 },
+	{ 0xa1, 0x50 },
+	{ 0xa4, 0x9c },
+	{ 0xa7, 0x02 },
+	{ 0xa8, 0x01 },
+	{ 0xa9, 0x01 },
+	{ 0xaa, 0xfc },
+	{ 0xab, 0x28 },
+	{ 0xac, 0x06 },
+	{ 0xad, 0x06 },
+	{ 0xae, 0x06 },
+	{ 0xaf, 0x03 },
+	{ 0xb0, 0x08 },
+	{ 0xb1, 0x26 },
+	{ 0xb2, 0x28 },
+	{ 0xb3, 0x28 },
+	{ 0xb4, 0x03 },
+	{ 0xb5, 0x08 },
+	{ 0xb6, 0x26 },
+	{ 0xb7, 0x08 },
+	{ 0xb8, 0x26 },
+	// EXTC Command set enable, select page 2
+	{ 0xff, 0x30 }, { 0xff, 0x52 }, { 0xff, 0x02 },
+	// Set gray scale voltage to adjust gamma
+	{ 0xb0, 0x02 }, // PGAMVR0
+	{ 0xb1, 0x0f }, // PGAMVR1
+	{ 0xb2, 0x11 }, // PGAMVR2
+	{ 0xb3, 0x32 }, // PGAMVR3
+	{ 0xb4, 0x36 }, // PGAMVR4
+	{ 0xb5, 0x3c }, // PGAMVR5
+	{ 0xb6, 0x20 }, // PGAMPR0
+	{ 0xb7, 0x3e }, // PGAMPR1
+	{ 0xb8, 0x0e }, // PGAMPK0
+	{ 0xb9, 0x05 }, // PGAMPK1
+	{ 0xba, 0x11 }, // PGAMPK2
+	{ 0xbb, 0x11 }, // PGAMPK3
+	{ 0xbc, 0x13 }, // PGAMPK4
+	{ 0xbd, 0x14 }, // PGAMPK5
+	{ 0xbe, 0x16 }, // PGAMPK6
+	{ 0xbf, 0x0e }, // PGAMPK7
+	{ 0xc0, 0x17 }, // PGAMPK8
+	{ 0xc1, 0x07 }, // PGAMPK9
+	{ 0xd0, 0x02 }, // NGAMVR0
+	{ 0xd1, 0x10 }, // NGAMVR0
+	{ 0xd2, 0x12 }, // NGAMVR1
+	{ 0xd3, 0x33 }, // NGAMVR2
+	{ 0xd4, 0x36 }, // NGAMVR3
+	{ 0xd5, 0x3c }, // NGAMVR4
+	{ 0xd6, 0x20 }, // NGAMPR0
+	{ 0xd7, 0x3e }, // NGAMPR1
+	{ 0xd8, 0x0d }, // NGAMPK0
+	{ 0xd9, 0x05 }, // NGAMPK1
+	{ 0xda, 0x12 }, // NGAMPK2
+	{ 0xdb, 0x11 }, // NGAMPK3
+	{ 0xdc, 0x14 }, // NGAMPK4
+	{ 0xdd, 0x14 }, // NGAMPK5
+	{ 0xde, 0x18 }, // NGAMPK6
+	{ 0xdf, 0x0f }, // NGAMPK7
+	{ 0xe0, 0x17 }, // NGAMPK8
+	{ 0xe1, 0x08 }, // NGAMPK9
+	// EXTC Command set enable, select page 3
+	{ 0xff, 0x30 }, { 0xff, 0x52 }, { 0xff, 0x03 },
+	// Mostly unknown registers
+	{ 0x07, 0x03 },
+	{ 0x08, 0x00 },
+	{ 0x09, 0x01 },
+	{ 0x30, 0x00 },
+	{ 0x31, 0x00 },
+	{ 0x32, 0x00 },
+	{ 0x33, 0x00 },
+	{ 0x34, 0x61 },
+	{ 0x35, 0xd4 },
+	{ 0x36, 0x24 },
+	{ 0x37, 0x03 },
+	{ 0x40, 0x02 },
+	{ 0x41, 0x03 },
+	{ 0x42, 0x04 },
+	{ 0x43, 0x05 },
+	{ 0x44, 0x11 },
+	{ 0x45, 0xe6 },
+	{ 0x46, 0xe7 },
+	{ 0x47, 0x11 },
+	{ 0x48, 0xe8 },
+	{ 0x49, 0xe9 },
+	{ 0x50, 0x06 },
+	{ 0x51, 0x07 },
+	{ 0x52, 0x08 },
+	{ 0x53, 0x09 },
+	{ 0x54, 0x11 },
+	{ 0x55, 0xea },
+	{ 0x56, 0xeb },
+	{ 0x57, 0x11 },
+	{ 0x58, 0xec },
+	{ 0x59, 0xed },
+	{ 0x82, 0x00 },
+	{ 0x83, 0x00 },
+	{ 0x84, 0x02 },
+	{ 0x85, 0x00 },
+	{ 0x86, 0x1f },
+	{ 0x87, 0x00 },
+	{ 0x88, 0x1f },
+	{ 0x89, 0x0e },
+	{ 0x8a, 0x0e },
+	{ 0x8b, 0x10 },
+	{ 0x8c, 0x10 },
+	{ 0x8d, 0x0a },
+	{ 0x8e, 0x0a },
+	{ 0x8f, 0x0c },
+	{ 0x90, 0x0c },
+	{ 0x98, 0x00 },
+	{ 0x99, 0x00 },
+	{ 0x9a, 0x01 },
+	{ 0x9b, 0x00 },
+	{ 0x9c, 0x1f },
+	{ 0x9d, 0x00 },
+	{ 0x9e, 0x1f },
+	{ 0x9f, 0x0d },
+	{ 0xa0, 0x0d },
+	{ 0xa1, 0x0f },
+	{ 0xa2, 0x0f },
+	{ 0xa3, 0x09 },
+	{ 0xa4, 0x09 },
+	{ 0xa5, 0x0b },
+	{ 0xa6, 0x0b },
+	// EXTC Command set enable, select page 0
+	{ 0xff, 0x30 }, { 0xff, 0x52 }, { 0xff, 0x00 },
+	// Interface Pixel Format
+	{ 0x3a, 0x77 },
+	// Display Access Control
+	{ 0x36, 0x0a }, // bgr = 1, ss = 1, gs = 0
+};
+
 static inline struct nv3052c *to_nv3052c(struct drm_panel *panel)
 {
 	return container_of(panel, struct nv3052c, panel);
@@ -881,6 +1030,21 @@ static const struct drm_display_mode wl_355608_a8_mode[] = {
 	},
 };
 
+static const struct drm_display_mode ylm_lbv0345001h_v2_mode[] = {
+	{
+		.clock = 24000,
+		.hdisplay = 640,
+		.hsync_start = 640 + 64,
+		.hsync_end = 640 + 64 + 20,
+		.htotal = 640 + 64 + 20 + 46,
+		.vdisplay = 480,
+		.vsync_start = 480 + 21,
+		.vsync_end = 480 + 21 + 4,
+		.vtotal = 480 + 21 + 4 + 15,
+		.flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC,
+	},
+};
+
 static const struct nv3052c_panel_info ltk035c5444t_panel_info = {
 	.display_modes = ltk035c5444t_modes,
 	.num_modes = ARRAY_SIZE(ltk035c5444t_modes),
@@ -914,10 +1078,22 @@ static const struct nv3052c_panel_info wl_355608_a8_panel_info = {
 	.panel_regs_len = ARRAY_SIZE(wl_355608_a8_panel_regs),
 };
 
+static const struct nv3052c_panel_info ylm_lbv0345001h_v2_panel_info = {
+	.display_modes = ylm_lbv0345001h_v2_mode,
+	.num_modes = ARRAY_SIZE(ylm_lbv0345001h_v2_mode),
+	.width_mm = 70,
+	.height_mm = 53,
+	.bus_format = MEDIA_BUS_FMT_RGB888_1X24,
+	.bus_flags = DRM_BUS_FLAG_DE_HIGH | DRM_BUS_FLAG_PIXDATA_DRIVE_NEGEDGE,
+	.panel_regs = ylm_lbv0345001h_v2_panel_regs,
+	.panel_regs_len = ARRAY_SIZE(ylm_lbv0345001h_v2_panel_regs),
+};
+
 static const struct spi_device_id nv3052c_ids[] = {
 	{ "ltk035c5444t", },
 	{ "fs035vg158", },
 	{ "wl-355608-a8", },
+	{ "ylm-lbv0345001h-v2", },
 	{ /* sentinel */ }
 };
 MODULE_DEVICE_TABLE(spi, nv3052c_ids);
@@ -926,6 +1102,7 @@ static const struct of_device_id nv3052c_of_match[] = {
 	{ .compatible = "leadtek,ltk035c5444t", .data = &ltk035c5444t_panel_info },
 	{ .compatible = "fascontek,fs035vg158", .data = &fs035vg158_panel_info },
 	{ .compatible = "anbernic,wl-355608-a8", .data = &wl_355608_a8_panel_info },
+	{ .compatible = "anbernic,ylm-lbv0345001h-v2", .data = &ylm_lbv0345001h_v2_panel_info },
 	{ /* sentinel */ }
 };
 MODULE_DEVICE_TABLE(of, nv3052c_of_match);
-- 
2.47.0