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charset="utf-8" Document On Tat Industrial Company KD50G21-40NT-A1 5" WVGA TFT LCD panel. The LCD module specification can be found at: https://cdn-shop.adafruit.com/datasheets/KD50G21-40NT-A1.pdf Signed-off-by: Liu Ying Acked-by: Krzysztof Kozlowski --- .../devicetree/bindings/display/panel/panel-simple.yaml | 2 ++ 1 file changed, 2 insertions(+) diff --git a/Documentation/devicetree/bindings/display/panel/panel-simple.y= aml b/Documentation/devicetree/bindings/display/panel/panel-simple.yaml index 8a87e0100dcb..c72a13b70efa 100644 --- a/Documentation/devicetree/bindings/display/panel/panel-simple.yaml +++ b/Documentation/devicetree/bindings/display/panel/panel-simple.yaml @@ -222,6 +222,8 @@ properties: - okaya,rs800480t-7x0gp # Olimex 4.3" TFT LCD panel - olimex,lcd-olinuxino-43-ts + # On Tat Industrial Company 5" DPI TFT panel. + - ontat,kd50g21-40nt-a1 # On Tat Industrial Company 7" DPI TFT panel. - ontat,yx700wv03 # OrtusTech COM37H3M05DTC Blanview 3.7" VGA portrait TFT-LCD panel --=20 2.34.1 From nobody Tue Dec 16 04:06:50 2025 Received: from AS8PR04CU009.outbound.protection.outlook.com (mail-westeuropeazon11011016.outbound.protection.outlook.com [52.101.70.16]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5FE1D13DDAA; 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charset="utf-8" ON Tat Industrial Company KD50G21-40NT-A1 is a 5" WVGA LCD panel with DPI interface. The LCD module specification can be found at: https://cdn-shop.adafruit.com/datasheets/KD50G21-40NT-A1.pdf Signed-off-by: Liu Ying Reviewed-by: Neil Armstrong --- drivers/gpu/drm/panel/panel-simple.c | 36 ++++++++++++++++++++++++++++ 1 file changed, 36 insertions(+) diff --git a/drivers/gpu/drm/panel/panel-simple.c b/drivers/gpu/drm/panel/p= anel-simple.c index bf40057c5cf3..89963df80917 100644 --- a/drivers/gpu/drm/panel/panel-simple.c +++ b/drivers/gpu/drm/panel/panel-simple.c @@ -3478,6 +3478,39 @@ static const struct panel_desc olimex_lcd_olinuxino_= 43ts =3D { .bus_format =3D MEDIA_BUS_FMT_RGB888_1X24, }; =20 +static const struct display_timing ontat_kd50g21_40nt_a1_timing =3D { + .pixelclock =3D { 30000000, 30000000, 50000000 }, + .hactive =3D { 800, 800, 800 }, + .hfront_porch =3D { 1, 40, 255 }, + .hback_porch =3D { 1, 40, 87 }, + .hsync_len =3D { 1, 48, 87 }, + .vactive =3D { 480, 480, 480 }, + .vfront_porch =3D { 1, 13, 255 }, + .vback_porch =3D { 1, 29, 29 }, + .vsync_len =3D { 3, 3, 31 }, + .flags =3D DISPLAY_FLAGS_HSYNC_LOW | DISPLAY_FLAGS_VSYNC_LOW | + DISPLAY_FLAGS_DE_HIGH | DISPLAY_FLAGS_PIXDATA_POSEDGE, +}; + +static const struct panel_desc ontat_kd50g21_40nt_a1 =3D { + .timings =3D &ontat_kd50g21_40nt_a1_timing, + .num_timings =3D 1, + .bpc =3D 8, + .size =3D { + .width =3D 108, + .height =3D 65, + }, + .delay =3D { + .prepare =3D 147, /* 5 VSDs */ + .enable =3D 147, /* 5 VSDs */ + .disable =3D 88, /* 3 VSDs */ + .unprepare =3D 117, /* 4 VSDs */ + }, + .bus_format =3D MEDIA_BUS_FMT_RGB888_1X24, + .bus_flags =3D DRM_BUS_FLAG_DE_HIGH | DRM_BUS_FLAG_PIXDATA_SAMPLE_NEGEDGE, + .connector_type =3D DRM_MODE_CONNECTOR_DPI, +}; + /* * 800x480 CVT. The panel appears to be quite accepting, at least as far as * pixel clocks, but this is the timing that was being used in the Adafruit @@ -4837,6 +4870,9 @@ static const struct of_device_id platform_of_match[] = =3D { }, { .compatible =3D "olimex,lcd-olinuxino-43-ts", .data =3D &olimex_lcd_olinuxino_43ts, + }, { + .compatible =3D "ontat,kd50g21-40nt-a1", + .data =3D &ontat_kd50g21_40nt_a1, }, { .compatible =3D "ontat,yx700wv03", .data =3D &ontat_yx700wv03, --=20 2.34.1