[PATCH v3 2/2] arm: dts: mediatek: mt6589: add basic support for Lenovo B8000-F

[Akari Tsuyukusa <akkun11.open@gmail.com>]

Lenovo YOGA Tablet 10 (Wi-Fi) - B8000-F is a tablet from the "blade"
product family. It is powered by MediaTek MT8125 SoC, (a tablet variant
of MT6589), and features 1GB of RAM.

The "blade" family consists of several variants based on screen size
and connectivity:
- YOGA Tablet 8 (8"): B6000-F (Wi-Fi), B6000-H/HV (3G)
- YOGA Tablet 10 (10"): B8000-F (Wi-Fi), B8000-H (3G)

This patch adds basic support, including a simple-framebuffer that
uses the panel already initialized by the bootloader.

While many parts of this Device Tree are expected to be common across
other "blade" family boards, they are kept within the B8000-F specific
file for now as it is the only supported device.

Signed-off-by: Akari Tsuyukusa <akkun11.open@gmail.com>
---
Changes in v3
- Drop UART node
  It was probably correct, but I'm not sure and haven't tested it
  so I removed it.
- Remove "mt6589-lenovo-blade.dtsi"
  There are currently no plans to add support for variants other
  than b8000-f, and the Device Tree is also small and there is no point
  in dividing it, so I deleted it and merged it
  into "mt6589-lenovo-b8000-f.dts"

 arch/arm/boot/dts/mediatek/Makefile           |  1 +
 .../dts/mediatek/mt6589-lenovo-b8000-f.dts    | 40 +++++++++++++++++++
 2 files changed, 41 insertions(+)
 create mode 100644 arch/arm/boot/dts/mediatek/mt6589-lenovo-b8000-f.dts

diff --git a/arch/arm/boot/dts/mediatek/Makefile b/arch/arm/boot/dts/mediatek/Makefile
index 37c4cded0eae..b67b94b7cbd0 100644
--- a/arch/arm/boot/dts/mediatek/Makefile
+++ b/arch/arm/boot/dts/mediatek/Makefile
@@ -8,6 +8,7 @@ dtb-$(CONFIG_ARCH_MEDIATEK) += \
 	mt6582-prestigio-pmt5008-3g.dtb \
 	mt6589-aquaris5.dtb \
 	mt6589-fairphone-fp1.dtb \
+	mt6589-lenovo-b8000-f.dtb \
 	mt6592-evb.dtb \
 	mt7623a-rfb-emmc.dtb \
 	mt7623a-rfb-nand.dtb \
diff --git a/arch/arm/boot/dts/mediatek/mt6589-lenovo-b8000-f.dts b/arch/arm/boot/dts/mediatek/mt6589-lenovo-b8000-f.dts
new file mode 100644
index 000000000000..b1f622ecf6fd
--- /dev/null
+++ b/arch/arm/boot/dts/mediatek/mt6589-lenovo-b8000-f.dts
@@ -0,0 +1,40 @@
+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+/*
+ * Copyright (c) 2026 Akari Tsuyukusa <akkun11.open@gmail.com>
+ */
+
+/dts-v1/;
+#include "mt6589.dtsi"
+
+/ {
+	model = "Lenovo YOGA Tablet 10 (Wi-Fi)";
+	compatible = "lenovo,b8000-f", "mediatek,mt6589";
+
+	chosen {
+		framebuffer0: framebuffer@bf600000 {
+			compatible = "simple-framebuffer";
+			memory-region = <&framebuffer_reserved>;
+			width = <1280>;
+			height = <800>;
+			stride = <(1280 * 2)>;
+			format = "r5g6b5";
+		};
+	};
+
+	memory@80000000 {
+		device_type = "memory";
+		reg = <0x80000000 0x40000000>;
+	};
+
+	reserved-memory {
+		#address-cells = <1>;
+		#size-cells = <1>;
+
+		ranges;
+
+		framebuffer_reserved: memory@bf600000{
+			reg = <0xbf600000 0xa00000>;
+			no-map;
+		};
+	};
+};
-- 
2.53.0