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([2a01:e0a:106d:1080:9476:5165:3a16:262]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-4aa7c5063e3sm335996165e9.0.2026.11.02.05.06.13 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 02 Nov 2026 05:06:14 -0800 (PST) Message-ID: <8f6212da-a6a1-4435-984b-98f79fd50e41@linaro.org> Date: Mon, 2 Nov 2026 14:06:13 +0100 X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 User-Agent: Mozilla Thunderbird From: Neil Armstrong Reply-To: Neil Armstrong Subject: Re: [PATCH 3/4] drm/panel: ilitek-ili9881c: add Mingjun MJ070BI30IA2 To: Icenowy Zheng , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Jessica Zhang , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, Icenowy Zheng , Han Gao References: <20261030-mj070bi30ia2-v1-0-a0f65b65c290@iscas.ac.cn> <20261030-mj070bi30ia2-v1-3-a0f65b65c290@iscas.ac.cn> Content-Language: en-US, fr Autocrypt: addr=neil.armstrong@linaro.org; keydata= xsBNBE1ZBs8BCAD78xVLsXPwV/2qQx2FaO/7mhWL0Qodw8UcQJnkrWmgTFRobtTWxuRx8WWP GTjuhvbleoQ5Cxjr+v+1ARGCH46MxFP5DwauzPekwJUD5QKZlaw/bURTLmS2id5wWi3lqVH4 BVF2WzvGyyeV1o4RTCYDnZ9VLLylJ9bneEaIs/7cjCEbipGGFlfIML3sfqnIvMAxIMZrvcl9 qPV2k+KQ7q+aXavU5W+yLNn7QtXUB530Zlk/d2ETgzQ5FLYYnUDAaRl+8JUTjc0CNOTpCeik 80TZcE6f8M76Xa6yU8VcNko94Ck7iB4vj70q76P/J7kt98hklrr85/3NU3oti3nrIHmHABEB AAHNKk5laWwgQXJtc3Ryb25nIDxuZWlsLmFybXN0cm9uZ0BsaW5hcm8ub3JnPsLAkQQTAQoA OwIbIwULCQgHAwUVCgkICwUWAgMBAAIeAQIXgBYhBInsPQWERiF0UPIoSBaat7Gkz/iuBQJk Q5wSAhkBAAoJEBaat7Gkz/iuyhMIANiD94qDtUTJRfEW6GwXmtKWwl/mvqQtaTtZID2dos04 YqBbshiJbejgVJjy+HODcNUIKBB3PSLaln4ltdsV73SBcwUNdzebfKspAQunCM22Mn6FBIxQ GizsMLcP/0FX4en9NaKGfK6ZdKK6kN1GR9YffMJd2P08EO8mHowmSRe/ExAODhAs9W7XXExw UNCY4pVJyRPpEhv373vvff60bHxc1k/FF9WaPscMt7hlkbFLUs85kHtQAmr8pV5Hy9ezsSRa 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Content-Transfer-Encoding: 7bit On 10/30/26 06:44, Icenowy Zheng wrote: > Mingjun MJ070BI30IA2 is a 7" MIPI DSI LCD panel used by Lichee Console > 4A, with a initialization sequence matching the pattern of Ilitek > ILI9881C driver chip. > > Add it to the driver for ILI9881C-based panels. > > Signed-off-by: Icenowy Zheng > --- > drivers/gpu/drm/panel/panel-ilitek-ili9881c.c | 222 ++++++++++++++++++++++++++ > 1 file changed, 222 insertions(+) > > diff --git a/drivers/gpu/drm/panel/panel-ilitek-ili9881c.c b/drivers/gpu/drm/panel/panel-ilitek-ili9881c.c > index c3d5ab67121d9..83148c40e25ca 100644 > --- a/drivers/gpu/drm/panel/panel-ilitek-ili9881c.c > +++ b/drivers/gpu/drm/panel/panel-ilitek-ili9881c.c > @@ -2198,6 +2198,201 @@ static const struct ili9881c_instr waveshare_7inch_a_init[] = { > ILI9881C_COMMAND_INSTR(0x36, 0x00), > }; > > +static const struct ili9881c_instr mj070bi30ia2_init[] = { > + ILI9881C_SWITCH_PAGE_INSTR(3), > + ILI9881C_COMMAND_INSTR(0x01, 0x00), > + ILI9881C_COMMAND_INSTR(0x02, 0x00), > + ILI9881C_COMMAND_INSTR(0x03, 0x73), > + ILI9881C_COMMAND_INSTR(0x04, 0x13), > + ILI9881C_COMMAND_INSTR(0x05, 0x00), > + ILI9881C_COMMAND_INSTR(0x06, 0x0A), > + ILI9881C_COMMAND_INSTR(0x07, 0x05), > + ILI9881C_COMMAND_INSTR(0x11, 0x00), > + ILI9881C_COMMAND_INSTR(0x09, 0x28), > + ILI9881C_COMMAND_INSTR(0x0A, 0x00), > + ILI9881C_COMMAND_INSTR(0x0B, 0x00), > + ILI9881C_COMMAND_INSTR(0x0C, 0x00), > + ILI9881C_COMMAND_INSTR(0x0D, 0x28), > + ILI9881C_COMMAND_INSTR(0x0E, 0x00), > + ILI9881C_COMMAND_INSTR(0x0F, 0x28), > + ILI9881C_COMMAND_INSTR(0x10, 0x28), > + ILI9881C_COMMAND_INSTR(0x11, 0x00), > + ILI9881C_COMMAND_INSTR(0x12, 0x00), > + ILI9881C_COMMAND_INSTR(0x13, 0x00), > + ILI9881C_COMMAND_INSTR(0x14, 0x00), > + ILI9881C_COMMAND_INSTR(0x15, 0x00), > + ILI9881C_COMMAND_INSTR(0x16, 0x00), > + ILI9881C_COMMAND_INSTR(0x17, 0x00), > + ILI9881C_COMMAND_INSTR(0x18, 0x00), > + 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, 0x40), > + ILI9881C_COMMAND_INSTR(0x1F, 0x80), > + ILI9881C_COMMAND_INSTR(0x20, 0x06), > + ILI9881C_COMMAND_INSTR(0x21, 0x01), > + 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, 0x33), > + ILI9881C_COMMAND_INSTR(0x29, 0x33), > + ILI9881C_COMMAND_INSTR(0x2A, 0x00), > + ILI9881C_COMMAND_INSTR(0x2B, 0x00), > + ILI9881C_COMMAND_INSTR(0x2C, 0x04), > + ILI9881C_COMMAND_INSTR(0x2D, 0x0C), > + ILI9881C_COMMAND_INSTR(0x2E, 0x05), > + ILI9881C_COMMAND_INSTR(0x2F, 0x05), > + ILI9881C_COMMAND_INSTR(0x30, 0x00), > + ILI9881C_COMMAND_INSTR(0x31, 0x00), > + ILI9881C_COMMAND_INSTR(0x32, 0x31), > + ILI9881C_COMMAND_INSTR(0x33, 0x00), > + ILI9881C_COMMAND_INSTR(0x34, 0x00), > + ILI9881C_COMMAND_INSTR(0x35, 0x0A), > + ILI9881C_COMMAND_INSTR(0x36, 0x00), > + ILI9881C_COMMAND_INSTR(0x37, 0x08), > + ILI9881C_COMMAND_INSTR(0x70, 0x00), > + ILI9881C_COMMAND_INSTR(0x39, 0x00), > + ILI9881C_COMMAND_INSTR(0x3A, 0x00), > + ILI9881C_COMMAND_INSTR(0x3B, 0x00), > + 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, 0x00), > + ILI9881C_COMMAND_INSTR(0x42, 0x00), > + ILI9881C_COMMAND_INSTR(0x43, 0x08), > + ILI9881C_COMMAND_INSTR(0x44, 0x00), > + ILI9881C_COMMAND_INSTR(0xA0, 0x02), > + ILI9881C_COMMAND_INSTR(0x51, 0x23), > + ILI9881C_COMMAND_INSTR(0x52, 0x44), > + 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, 0x11), > + ILI9881C_COMMAND_INSTR(0x5F, 0x02), > + ILI9881C_COMMAND_INSTR(0x60, 0x08), > + ILI9881C_COMMAND_INSTR(0x61, 0x0E), > + ILI9881C_COMMAND_INSTR(0x62, 0x0F), > + ILI9881C_COMMAND_INSTR(0x63, 0x0C), > + ILI9881C_COMMAND_INSTR(0x64, 0x0D), > + ILI9881C_COMMAND_INSTR(0x65, 0x17), > + ILI9881C_COMMAND_INSTR(0x66, 0x01), > + ILI9881C_COMMAND_INSTR(0x67, 0x01), > + ILI9881C_COMMAND_INSTR(0x68, 0x02), > + ILI9881C_COMMAND_INSTR(0x69, 0x02), > + ILI9881C_COMMAND_INSTR(0x6A, 0x00), > + ILI9881C_COMMAND_INSTR(0x6B, 0x00), > + ILI9881C_COMMAND_INSTR(0x6C, 0x02), > + ILI9881C_COMMAND_INSTR(0x6D, 0x02), > + ILI9881C_COMMAND_INSTR(0x6E, 0x16), > + ILI9881C_COMMAND_INSTR(0x6F, 0x16), > + ILI9881C_COMMAND_INSTR(0x70, 0x06), > + ILI9881C_COMMAND_INSTR(0x71, 0x06), > + ILI9881C_COMMAND_INSTR(0x72, 0x07), > + ILI9881C_COMMAND_INSTR(0x73, 0x07), > + ILI9881C_COMMAND_INSTR(0x74, 0x02), > + ILI9881C_COMMAND_INSTR(0x75, 0x02), > + ILI9881C_COMMAND_INSTR(0x76, 0x08), > + ILI9881C_COMMAND_INSTR(0x77, 0x0E), > + ILI9881C_COMMAND_INSTR(0x78, 0x0F), > + ILI9881C_COMMAND_INSTR(0x79, 0x0C), > + ILI9881C_COMMAND_INSTR(0x7A, 0x0D), > + ILI9881C_COMMAND_INSTR(0x7B, 0x17), > + ILI9881C_COMMAND_INSTR(0x7C, 0x01), > + ILI9881C_COMMAND_INSTR(0x7D, 0x01), > + ILI9881C_COMMAND_INSTR(0x7E, 0x02), > + ILI9881C_COMMAND_INSTR(0x7F, 0x02), > + ILI9881C_COMMAND_INSTR(0x80, 0x00), > + ILI9881C_COMMAND_INSTR(0x81, 0x00), > + ILI9881C_COMMAND_INSTR(0x82, 0x02), > + ILI9881C_COMMAND_INSTR(0x83, 0x02), > + ILI9881C_COMMAND_INSTR(0x84, 0x16), > + ILI9881C_COMMAND_INSTR(0x85, 0x16), > + ILI9881C_COMMAND_INSTR(0x86, 0x06), > + ILI9881C_COMMAND_INSTR(0x87, 0x06), > + ILI9881C_COMMAND_INSTR(0x88, 0x07), > + ILI9881C_COMMAND_INSTR(0x89, 0x07), > + ILI9881C_COMMAND_INSTR(0x8A, 0x02), > + > + ILI9881C_SWITCH_PAGE_INSTR(4), > + ILI9881C_COMMAND_INSTR(0x6E, 0x1A), > + ILI9881C_COMMAND_INSTR(0x6F, 0x37), > + ILI9881C_COMMAND_INSTR(0x3A, 0xA4), > + ILI9881C_COMMAND_INSTR(0x8D, 0x1F), > + ILI9881C_COMMAND_INSTR(0x87, 0xBA), > + ILI9881C_COMMAND_INSTR(0xB2, 0xD1), > + ILI9881C_COMMAND_INSTR(0x88, 0x0B), > + ILI9881C_COMMAND_INSTR(0x38, 0x01), > + ILI9881C_COMMAND_INSTR(0x39, 0x00), > + ILI9881C_COMMAND_INSTR(0xB5, 0x02), > + ILI9881C_COMMAND_INSTR(0x31, 0x25), > + ILI9881C_COMMAND_INSTR(0x3B, 0x98), > + > + ILI9881C_SWITCH_PAGE_INSTR(1), > + ILI9881C_COMMAND_INSTR(0x22, 0x0A), > + ILI9881C_COMMAND_INSTR(0x31, 0x00), > + ILI9881C_COMMAND_INSTR(0xA6, 0xA6), > + ILI9881C_COMMAND_INSTR(0x55, 0x3D), > + ILI9881C_COMMAND_INSTR(0x50, 0x9E), > + ILI9881C_COMMAND_INSTR(0x51, 0x99), > + ILI9881C_COMMAND_INSTR(0x60, 0x06), > + ILI9881C_COMMAND_INSTR(0x62, 0x20), > + ILI9881C_COMMAND_INSTR(0xA0, 0x00), > + ILI9881C_COMMAND_INSTR(0xA1, 0x17), > + ILI9881C_COMMAND_INSTR(0xA2, 0x26), > + ILI9881C_COMMAND_INSTR(0xA3, 0x13), > + ILI9881C_COMMAND_INSTR(0xA4, 0x16), > + ILI9881C_COMMAND_INSTR(0xA5, 0x29), > + ILI9881C_COMMAND_INSTR(0xA6, 0x1E), > + ILI9881C_COMMAND_INSTR(0xA7, 0x1F), > + ILI9881C_COMMAND_INSTR(0xA8, 0x8B), > + ILI9881C_COMMAND_INSTR(0xA9, 0x1D), > + ILI9881C_COMMAND_INSTR(0xAA, 0x2A), > + ILI9881C_COMMAND_INSTR(0xAB, 0x7B), > + ILI9881C_COMMAND_INSTR(0xAC, 0x1A), > + ILI9881C_COMMAND_INSTR(0xAD, 0x19), > + ILI9881C_COMMAND_INSTR(0xAE, 0x4E), > + ILI9881C_COMMAND_INSTR(0xAF, 0x24), > + ILI9881C_COMMAND_INSTR(0xB0, 0x29), > + ILI9881C_COMMAND_INSTR(0xB1, 0x4F), > + ILI9881C_COMMAND_INSTR(0xB2, 0x5C), > + ILI9881C_COMMAND_INSTR(0xB3, 0x3E), > + ILI9881C_COMMAND_INSTR(0xC0, 0x00), > + ILI9881C_COMMAND_INSTR(0xC1, 0x17), > + ILI9881C_COMMAND_INSTR(0xC2, 0x26), > + ILI9881C_COMMAND_INSTR(0xC3, 0x13), > + ILI9881C_COMMAND_INSTR(0xC4, 0x16), > + ILI9881C_COMMAND_INSTR(0xC5, 0x29), > + ILI9881C_COMMAND_INSTR(0xC6, 0x1E), > + ILI9881C_COMMAND_INSTR(0xC7, 0x1F), > + ILI9881C_COMMAND_INSTR(0xC8, 0x8B), > + ILI9881C_COMMAND_INSTR(0xC9, 0x1D), > + ILI9881C_COMMAND_INSTR(0xCA, 0x2A), > + ILI9881C_COMMAND_INSTR(0xCB, 0x7B), > + ILI9881C_COMMAND_INSTR(0xCC, 0x1A), > + ILI9881C_COMMAND_INSTR(0xCD, 0x19), > + ILI9881C_COMMAND_INSTR(0xCE, 0x4E), > + ILI9881C_COMMAND_INSTR(0xCF, 0x24), > + ILI9881C_COMMAND_INSTR(0xD0, 0x29), > + ILI9881C_COMMAND_INSTR(0xD1, 0x4D), > + ILI9881C_COMMAND_INSTR(0xD2, 0x5C), > + ILI9881C_COMMAND_INSTR(0xD3, 0x3E), > +}; > + > static inline struct ili9881c *panel_to_ili9881c(struct drm_panel *panel) > { > return container_of(panel, struct ili9881c, panel); > @@ -2493,6 +2688,23 @@ static const struct drm_display_mode waveshare_7inch_a_mode = { > .height_mm = 154, > }; > > +static const struct drm_display_mode mj070bi30ia2_mode = { > + .clock = 75750, > + > + .hdisplay = 800, > + .hsync_start = 800 + 48, > + .hsync_end = 800 + 48 + 32, > + .htotal = 800 + 48 + 32 + 80, > + > + .vdisplay = 1280, > + .vsync_start = 1280 + 3, > + .vsync_end = 1280 + 3 + 10, > + .vtotal = 1280 + 3 + 10 + 24, > + > + .width_mm = 94, > + .height_mm = 150, > +}; > + > static int ili9881c_get_modes(struct drm_panel *panel, > struct drm_connector *connector) > { > @@ -2704,6 +2916,15 @@ static const struct ili9881c_desc waveshare_7inch_a_desc = { > .lanes = 2, > }; > > +static const struct ili9881c_desc mj070bi30ia2_desc = { > + .init = mj070bi30ia2_init, > + .init_length = ARRAY_SIZE(mj070bi30ia2_init), > + .mode = &mj070bi30ia2_mode, > + .mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST | > + MIPI_DSI_MODE_LPM, > + .lanes = 4, > +}; > + > static const struct of_device_id ili9881c_of_match[] = { > { .compatible = "bananapi,lhr050h41", .data = &lhr050h41_desc }, > { .compatible = "bestar,bsd1218-a101kl68", .data = &bsd1218_a101kl68_desc }, > @@ -2714,6 +2935,7 @@ static const struct of_device_id ili9881c_of_match[] = { > { .compatible = "wanchanglong,w552946aba", .data = &w552946aba_desc }, > { .compatible = "waveshare,7.0-dsi-touch-a", .data = &waveshare_7inch_a_desc }, > { .compatible = "ampire,am8001280g", .data = &am8001280g_desc }, > + { .compatible = "mingjun,mj070bi30ia2", .data = &mj070bi30ia2_desc }, > { .compatible = "raspberrypi,dsi-5inch", &rpi_5inch_desc }, > { .compatible = "raspberrypi,dsi-7inch", &rpi_7inch_desc }, > { } > Reviewed-by: Neil Armstrong Thanks, Neil