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Message-Id: <20251106020632.92-6-kernel@airkyi.com>
Date: Thu,  6 Nov 2025 10:06:28 +0800
From: Chaoyi Chen <kernel@...kyi.com>
To: Neil Armstrong <neil.armstrong@...aro.org>,
	Jessica Zhang <jessica.zhang@....qualcomm.com>,
	David Airlie <airlied@...il.com>,
	Simona Vetter <simona@...ll.ch>,
	Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
	Maxime Ripard <mripard@...nel.org>,
	Thomas Zimmermann <tzimmermann@...e.de>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Sandy Huang <hjc@...k-chips.com>,
	Heiko Stübner <heiko@...ech.de>,
	Andy Yan <andy.yan@...k-chips.com>,
	Vinod Koul <vkoul@...nel.org>,
	Kishon Vijay Abraham I <kishon@...nel.org>
Cc: dri-devel@...ts.freedesktop.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-rockchip@...ts.infradead.org,
	linux-phy@...ts.infradead.org,
	Chaoyi Chen <chaoyi.chen@...k-chips.com>
Subject: [PATCH 5/9] drm/panel: ilitek-ili9881d: Add support for Wanchanglong W552946AAA panel

From: Chaoyi Chen <chaoyi.chen@...k-chips.com>

W552946AAA is a panel by Wanchanglong. This panel utilizes the
Ilitek ILI9881D controller.

W552946AAA is similar to W552946ABA, but the W552946AAA only
uses 2 lanes.

Tested on rk3506g-evb1-v10.

Signed-off-by: Chaoyi Chen <chaoyi.chen@...k-chips.com>
---
 drivers/gpu/drm/panel/panel-ilitek-ili9881c.c | 225 ++++++++++++++++++
 1 file changed, 225 insertions(+)

diff --git a/drivers/gpu/drm/panel/panel-ilitek-ili9881c.c b/drivers/gpu/drm/panel/panel-ilitek-ili9881c.c
index ad4993b2f92a..9b3e9450808d 100644
--- a/drivers/gpu/drm/panel/panel-ilitek-ili9881c.c
+++ b/drivers/gpu/drm/panel/panel-ilitek-ili9881c.c
@@ -820,6 +820,204 @@ static const struct ili9881c_instr tl050hdv35_init[] = {
 	ILI9881C_COMMAND_INSTR(0xd3, 0x39),
 };
 
+static const struct ili9881c_instr w552946aaa_init[] = {
+	ILI9881C_SWITCH_PAGE_INSTR(3),
+	ILI9881C_COMMAND_INSTR(0x01, 0x00),
+	ILI9881C_COMMAND_INSTR(0x02, 0x00),
+	ILI9881C_COMMAND_INSTR(0x03, 0x53),
+	ILI9881C_COMMAND_INSTR(0x04, 0x53),
+	ILI9881C_COMMAND_INSTR(0x05, 0x13),
+	ILI9881C_COMMAND_INSTR(0x06, 0x04),
+	ILI9881C_COMMAND_INSTR(0x07, 0x02),
+	ILI9881C_COMMAND_INSTR(0x08, 0x02),
+	ILI9881C_COMMAND_INSTR(0x09, 0x00),
+	ILI9881C_COMMAND_INSTR(0x0a, 0x00),
+	ILI9881C_COMMAND_INSTR(0x0b, 0x00),
+	ILI9881C_COMMAND_INSTR(0x0c, 0x00),
+	ILI9881C_COMMAND_INSTR(0x0d, 0x00),
+	ILI9881C_COMMAND_INSTR(0x0e, 0x00),
+	ILI9881C_COMMAND_INSTR(0x0f, 0x00),
+	ILI9881C_COMMAND_INSTR(0x10, 0x00),
+	ILI9881C_COMMAND_INSTR(0x11, 0x00),
+	ILI9881C_COMMAND_INSTR(0x12, 0x00),
+	ILI9881C_COMMAND_INSTR(0x13, 0x00),
+	ILI9881C_COMMAND_INSTR(0x14, 0x00),
+	ILI9881C_COMMAND_INSTR(0x15, 0x08),
+	ILI9881C_COMMAND_INSTR(0x16, 0x10),
+	ILI9881C_COMMAND_INSTR(0x17, 0x00),
+	ILI9881C_COMMAND_INSTR(0x18, 0x08),
+	ILI9881C_COMMAND_INSTR(0x19, 0x00),
+	ILI9881C_COMMAND_INSTR(0x1a, 0x00),
+	ILI9881C_COMMAND_INSTR(0x1b, 0x00),
+	ILI9881C_COMMAND_INSTR(0x1c, 0x00),
+	ILI9881C_COMMAND_INSTR(0x1d, 0x00),
+	ILI9881C_COMMAND_INSTR(0x1e, 0xc0),
+	ILI9881C_COMMAND_INSTR(0x1f, 0x80),
+	ILI9881C_COMMAND_INSTR(0x20, 0x02),
+	ILI9881C_COMMAND_INSTR(0x21, 0x09),
+	ILI9881C_COMMAND_INSTR(0x22, 0x00),
+	ILI9881C_COMMAND_INSTR(0x23, 0x00),
+	ILI9881C_COMMAND_INSTR(0x24, 0x00),
+	ILI9881C_COMMAND_INSTR(0x25, 0x00),
+	ILI9881C_COMMAND_INSTR(0x26, 0x00),
+	ILI9881C_COMMAND_INSTR(0x27, 0x00),
+	ILI9881C_COMMAND_INSTR(0x28, 0x55),
+	ILI9881C_COMMAND_INSTR(0x29, 0x03),
+	ILI9881C_COMMAND_INSTR(0x2a, 0x00),
+	ILI9881C_COMMAND_INSTR(0x2b, 0x00),
+	ILI9881C_COMMAND_INSTR(0x2c, 0x00),
+	ILI9881C_COMMAND_INSTR(0x2d, 0x00),
+	ILI9881C_COMMAND_INSTR(0x2e, 0x00),
+	ILI9881C_COMMAND_INSTR(0x2f, 0x00),
+	ILI9881C_COMMAND_INSTR(0x30, 0x00),
+	ILI9881C_COMMAND_INSTR(0x31, 0x00),
+	ILI9881C_COMMAND_INSTR(0x32, 0x00),
+	ILI9881C_COMMAND_INSTR(0x33, 0x00),
+	ILI9881C_COMMAND_INSTR(0x34, 0x04),
+	ILI9881C_COMMAND_INSTR(0x35, 0x05),
+	ILI9881C_COMMAND_INSTR(0x36, 0x05),
+	ILI9881C_COMMAND_INSTR(0x37, 0x00),
+	ILI9881C_COMMAND_INSTR(0x38, 0x3c),
+	ILI9881C_COMMAND_INSTR(0x39, 0x35),
+	ILI9881C_COMMAND_INSTR(0x3a, 0x00),
+	ILI9881C_COMMAND_INSTR(0x3b, 0x40),
+	ILI9881C_COMMAND_INSTR(0x3c, 0x00),
+	ILI9881C_COMMAND_INSTR(0x3d, 0x00),
+	ILI9881C_COMMAND_INSTR(0x3e, 0x00),
+	ILI9881C_COMMAND_INSTR(0x3f, 0x00),
+	ILI9881C_COMMAND_INSTR(0x40, 0x00),
+	ILI9881C_COMMAND_INSTR(0x41, 0x88),
+	ILI9881C_COMMAND_INSTR(0x42, 0x00),
+	ILI9881C_COMMAND_INSTR(0x43, 0x00),
+	ILI9881C_COMMAND_INSTR(0x44, 0x1f),
+	ILI9881C_COMMAND_INSTR(0x50, 0x01),
+	ILI9881C_COMMAND_INSTR(0x51, 0x23),
+	ILI9881C_COMMAND_INSTR(0x52, 0x45),
+	ILI9881C_COMMAND_INSTR(0x53, 0x67),
+	ILI9881C_COMMAND_INSTR(0x54, 0x89),
+	ILI9881C_COMMAND_INSTR(0x55, 0xab),
+	ILI9881C_COMMAND_INSTR(0x56, 0x01),
+	ILI9881C_COMMAND_INSTR(0x57, 0x23),
+	ILI9881C_COMMAND_INSTR(0x58, 0x45),
+	ILI9881C_COMMAND_INSTR(0x59, 0x67),
+	ILI9881C_COMMAND_INSTR(0x5a, 0x89),
+	ILI9881C_COMMAND_INSTR(0x5b, 0xab),
+	ILI9881C_COMMAND_INSTR(0x5c, 0xcd),
+	ILI9881C_COMMAND_INSTR(0x5d, 0xef),
+	ILI9881C_COMMAND_INSTR(0x5e, 0x03),
+	ILI9881C_COMMAND_INSTR(0x5f, 0x14),
+	ILI9881C_COMMAND_INSTR(0x60, 0x15),
+	ILI9881C_COMMAND_INSTR(0x61, 0x0c),
+	ILI9881C_COMMAND_INSTR(0x62, 0x0d),
+	ILI9881C_COMMAND_INSTR(0x63, 0x0e),
+	ILI9881C_COMMAND_INSTR(0x64, 0x0f),
+	ILI9881C_COMMAND_INSTR(0x65, 0x10),
+	ILI9881C_COMMAND_INSTR(0x66, 0x11),
+	ILI9881C_COMMAND_INSTR(0x67, 0x08),
+	ILI9881C_COMMAND_INSTR(0x68, 0x02),
+	ILI9881C_COMMAND_INSTR(0x69, 0x0a),
+	ILI9881C_COMMAND_INSTR(0x6a, 0x02),
+	ILI9881C_COMMAND_INSTR(0x6b, 0x02),
+	ILI9881C_COMMAND_INSTR(0x6c, 0x02),
+	ILI9881C_COMMAND_INSTR(0x6d, 0x02),
+	ILI9881C_COMMAND_INSTR(0x6e, 0x02),
+	ILI9881C_COMMAND_INSTR(0x6f, 0x02),
+	ILI9881C_COMMAND_INSTR(0x70, 0x02),
+	ILI9881C_COMMAND_INSTR(0x71, 0x02),
+	ILI9881C_COMMAND_INSTR(0x72, 0x06),
+	ILI9881C_COMMAND_INSTR(0x73, 0x02),
+	ILI9881C_COMMAND_INSTR(0x74, 0x02),
+	ILI9881C_COMMAND_INSTR(0x75, 0x14),
+	ILI9881C_COMMAND_INSTR(0x76, 0x15),
+	ILI9881C_COMMAND_INSTR(0x77, 0x0f),
+	ILI9881C_COMMAND_INSTR(0x78, 0x0e),
+	ILI9881C_COMMAND_INSTR(0x79, 0x0d),
+	ILI9881C_COMMAND_INSTR(0x7a, 0x0c),
+	ILI9881C_COMMAND_INSTR(0x7b, 0x11),
+	ILI9881C_COMMAND_INSTR(0x7c, 0x10),
+	ILI9881C_COMMAND_INSTR(0x7d, 0x06),
+	ILI9881C_COMMAND_INSTR(0x7e, 0x02),
+	ILI9881C_COMMAND_INSTR(0x7f, 0x0a),
+	ILI9881C_COMMAND_INSTR(0x80, 0x02),
+	ILI9881C_COMMAND_INSTR(0x81, 0x02),
+	ILI9881C_COMMAND_INSTR(0x82, 0x02),
+	ILI9881C_COMMAND_INSTR(0x83, 0x02),
+	ILI9881C_COMMAND_INSTR(0x84, 0x02),
+	ILI9881C_COMMAND_INSTR(0x85, 0x02),
+	ILI9881C_COMMAND_INSTR(0x86, 0x02),
+	ILI9881C_COMMAND_INSTR(0x87, 0x02),
+	ILI9881C_COMMAND_INSTR(0x88, 0x08),
+	ILI9881C_COMMAND_INSTR(0x89, 0x02),
+	ILI9881C_COMMAND_INSTR(0x8a, 0x02),
+	ILI9881C_SWITCH_PAGE_INSTR(4),
+	ILI9881C_COMMAND_INSTR(0x00, 0x80),
+	ILI9881C_COMMAND_INSTR(0x70, 0x00),
+	ILI9881C_COMMAND_INSTR(0x71, 0x00),
+	ILI9881C_COMMAND_INSTR(0x66, 0xfe),
+	ILI9881C_COMMAND_INSTR(0x82, 0x15),
+	ILI9881C_COMMAND_INSTR(0x84, 0x15),
+	ILI9881C_COMMAND_INSTR(0x85, 0x15),
+	ILI9881C_COMMAND_INSTR(0x3a, 0x24),
+	ILI9881C_COMMAND_INSTR(0x32, 0xac),
+	ILI9881C_COMMAND_INSTR(0x8c, 0x80),
+	ILI9881C_COMMAND_INSTR(0x3c, 0xf5),
+	ILI9881C_COMMAND_INSTR(0x88, 0x33),
+	ILI9881C_SWITCH_PAGE_INSTR(1),
+	ILI9881C_COMMAND_INSTR(0x22, 0x0a),
+	ILI9881C_COMMAND_INSTR(0x31, 0x00),
+	ILI9881C_COMMAND_INSTR(0x53, 0x78),
+	ILI9881C_COMMAND_INSTR(0x55, 0x7b),
+	ILI9881C_COMMAND_INSTR(0x60, 0x20),
+	ILI9881C_COMMAND_INSTR(0x61, 0x00),
+	ILI9881C_COMMAND_INSTR(0x62, 0x0d),
+	ILI9881C_COMMAND_INSTR(0x63, 0x00),
+	ILI9881C_COMMAND_INSTR(0xa0, 0x00),
+	ILI9881C_COMMAND_INSTR(0xa1, 0x10),
+	ILI9881C_COMMAND_INSTR(0xa2, 0x1c),
+	ILI9881C_COMMAND_INSTR(0xa3, 0x13),
+	ILI9881C_COMMAND_INSTR(0xa4, 0x15),
+	ILI9881C_COMMAND_INSTR(0xa5, 0x26),
+	ILI9881C_COMMAND_INSTR(0xa6, 0x1a),
+	ILI9881C_COMMAND_INSTR(0xa7, 0x1d),
+	ILI9881C_COMMAND_INSTR(0xa8, 0x67),
+	ILI9881C_COMMAND_INSTR(0xa9, 0x1c),
+	ILI9881C_COMMAND_INSTR(0xaa, 0x29),
+	ILI9881C_COMMAND_INSTR(0xab, 0x5b),
+	ILI9881C_COMMAND_INSTR(0xac, 0x26),
+	ILI9881C_COMMAND_INSTR(0xad, 0x28),
+	ILI9881C_COMMAND_INSTR(0xae, 0x5c),
+	ILI9881C_COMMAND_INSTR(0xaf, 0x30),
+	ILI9881C_COMMAND_INSTR(0xb0, 0x31),
+	ILI9881C_COMMAND_INSTR(0xb1, 0x32),
+	ILI9881C_COMMAND_INSTR(0xb2, 0x00),
+	ILI9881C_COMMAND_INSTR(0xb1, 0x2e),
+	ILI9881C_COMMAND_INSTR(0xb2, 0x32),
+	ILI9881C_COMMAND_INSTR(0xb3, 0x00),
+	ILI9881C_COMMAND_INSTR(0xb6, 0x02),
+	ILI9881C_COMMAND_INSTR(0xb7, 0x03),
+	ILI9881C_COMMAND_INSTR(0xc0, 0x00),
+	ILI9881C_COMMAND_INSTR(0xc1, 0x10),
+	ILI9881C_COMMAND_INSTR(0xc2, 0x1c),
+	ILI9881C_COMMAND_INSTR(0xc3, 0x13),
+	ILI9881C_COMMAND_INSTR(0xc4, 0x15),
+	ILI9881C_COMMAND_INSTR(0xc5, 0x26),
+	ILI9881C_COMMAND_INSTR(0xc6, 0x1a),
+	ILI9881C_COMMAND_INSTR(0xc7, 0x1d),
+	ILI9881C_COMMAND_INSTR(0xc8, 0x67),
+	ILI9881C_COMMAND_INSTR(0xc9, 0x1c),
+	ILI9881C_COMMAND_INSTR(0xca, 0x29),
+	ILI9881C_COMMAND_INSTR(0xcb, 0x5b),
+	ILI9881C_COMMAND_INSTR(0xcc, 0x26),
+	ILI9881C_COMMAND_INSTR(0xcd, 0x28),
+	ILI9881C_COMMAND_INSTR(0xce, 0x5c),
+	ILI9881C_COMMAND_INSTR(0xcf, 0x30),
+	ILI9881C_COMMAND_INSTR(0xd0, 0x31),
+	ILI9881C_COMMAND_INSTR(0xd1, 0x2e),
+	ILI9881C_COMMAND_INSTR(0xd2, 0x32),
+	ILI9881C_COMMAND_INSTR(0xd3, 0x00),
+	ILI9881C_SWITCH_PAGE_INSTR(0),
+};
+
 static const struct ili9881c_instr w552946ab_init[] = {
 	ILI9881C_SWITCH_PAGE_INSTR(3),
 	ILI9881C_COMMAND_INSTR(0x01, 0x00),
@@ -1772,6 +1970,23 @@ static const struct drm_display_mode tl050hdv35_default_mode = {
 	.height_mm	= 110,
 };
 
+static const struct drm_display_mode w552946aaa_default_mode = {
+	.clock		= 65000,
+
+	.hdisplay	= 720,
+	.hsync_start	= 720 + 52,
+	.hsync_end	= 720 + 52 + 8,
+	.htotal		= 720 + 52 + 8 + 48,
+
+	.vdisplay	= 1280,
+	.vsync_start	= 1280 + 16,
+	.vsync_end	= 1280 + 16 + 6,
+	.vtotal		= 1280 + 16 + 6 + 15,
+
+	.width_mm	= 68,
+	.height_mm	= 121,
+};
+
 static const struct drm_display_mode w552946aba_default_mode = {
 	.clock		= 64000,
 
@@ -1983,6 +2198,15 @@ static const struct ili9881c_desc tl050hdv35_desc = {
 	.default_address_mode = 0x03,
 };
 
+static const struct ili9881c_desc w552946aaa_desc = {
+	.init = w552946aaa_init,
+	.init_length = ARRAY_SIZE(w552946aaa_init),
+	.mode = &w552946aaa_default_mode,
+	.mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST |
+		      MIPI_DSI_MODE_LPM | MIPI_DSI_MODE_NO_EOT_PACKET,
+	.lanes = 2,
+};
+
 static const struct ili9881c_desc w552946aba_desc = {
 	.init = w552946ab_init,
 	.init_length = ARRAY_SIZE(w552946ab_init),
@@ -2023,6 +2247,7 @@ static const struct of_device_id ili9881c_of_match[] = {
 	{ .compatible = "feixin,k101-im2byl02", .data = &k101_im2byl02_desc },
 	{ .compatible = "startek,kd050hdfia020", .data = &kd050hdfia020_desc },
 	{ .compatible = "tdo,tl050hdv35", .data = &tl050hdv35_desc },
+	{ .compatible = "wanchanglong,w552946aaa", .data = &w552946aaa_desc },
 	{ .compatible = "wanchanglong,w552946aba", .data = &w552946aba_desc },
 	{ .compatible = "ampire,am8001280g", .data = &am8001280g_desc },
 	{ .compatible = "raspberrypi,dsi-7inch", &rpi_7inch_desc },
-- 
2.51.1

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