[PATCH 12/13] ARM: dts: vt8500: Add VIA APC Rock/Paper board

Alexey Charkov alchark at gmail.com
Wed Apr 16 01:21:37 PDT 2025


APC Rock is a development board based on WonderMedia WM8590 released
around 2013. Paper is the same board, but with VGA port unpopulated
and shipped with a recycled cardboard case

Its hardware includes:
* Single-core Cortex-A9 CPU at 800 MHz
* 512MB DDR3 RAM
* 4GB NAND flash
* 8MB SPI NOR flash
* ARM Mali-400 GPU
* HDMI output (type A) capable of 1080p output
* VGA output (on Rock, but not on Paper)
* 2x USB 2.0 type A
* 1x USB 2.0 OTG (microUSB connector)
* microSD slot
* 10/100M Ethernet
* Combined headphones/mic via 3.5mm jack connector
* Half-height miniPCIe slot (with only USB 2.0 signals)

Signed-off-by: Alexey Charkov <alchark at gmail.com>
---
 arch/arm/boot/dts/vt8500/Makefile            |  3 ++-
 arch/arm/boot/dts/vt8500/wm8950-apc-rock.dts | 21 +++++++++++++++++++++
 arch/arm/boot/dts/vt8500/wm8950.dtsi         | 11 +++++++++++
 3 files changed, 34 insertions(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/vt8500/Makefile b/arch/arm/boot/dts/vt8500/Makefile
index 255f4403af91c1d6a22416ab694b8eab44bf98a2..c5a2e57d53af4babe40fe2d79b2f8d9c1ae1b8db 100644
--- a/arch/arm/boot/dts/vt8500/Makefile
+++ b/arch/arm/boot/dts/vt8500/Makefile
@@ -4,4 +4,5 @@ dtb-$(CONFIG_ARCH_VT8500) += \
 	wm8505-ref.dtb \
 	wm8650-mid.dtb \
 	wm8750-apc8750.dtb \
-	wm8850-w70v2.dtb
+	wm8850-w70v2.dtb \
+	wm8950a-apc-rock.dtb
diff --git a/arch/arm/boot/dts/vt8500/wm8950-apc-rock.dts b/arch/arm/boot/dts/vt8500/wm8950-apc-rock.dts
new file mode 100644
index 0000000000000000000000000000000000000000..58b3c8deb4f20ae072bf1381f1dfa5e5adeb414a
--- /dev/null
+++ b/arch/arm/boot/dts/vt8500/wm8950-apc-rock.dts
@@ -0,0 +1,21 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2025 Alexey Charkov <alchark at gmail.com>
+ */
+
+/dts-v1/;
+/include/ "wm8950.dtsi"
+
+/ {
+	model = "VIA APC Rock";
+	compatible = "via,apc-rock", "wm,wm8950";
+
+	memory at 0 {
+		device_type = "memory";
+		reg = <0x0 0x20000000>;
+	};
+};
+
+&uart0 {
+	status = "okay";
+};
diff --git a/arch/arm/boot/dts/vt8500/wm8950.dtsi b/arch/arm/boot/dts/vt8500/wm8950.dtsi
new file mode 100644
index 0000000000000000000000000000000000000000..31fba05d3c3e70b21a64d08b5cdf645102a1faf3
--- /dev/null
+++ b/arch/arm/boot/dts/vt8500/wm8950.dtsi
@@ -0,0 +1,11 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2025 Alexey Charkov <alchark at gmail.com>
+ */
+
+/* No differences have been discovered vs. WM8850, but chip markings differ */
+/include/ "wm8850.dtsi"
+
+/ {
+	compatible = "wm,wm8950";
+};

-- 
2.49.0




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