ARM: dts: vt8500: Add VIA APC Rock/Paper board

APC Rock is a development board based on WonderMedia WM8590 released
around 2013. Paper is the same board, but with the VGA port left
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
* 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
* 3.5mm minijack connector with combined headphones/mic
* Half-height miniPCIe slot (with only USB 2.0 signals)

Signed-off-by: Alexey Charkov <alchark@gmail.com>
Link: https://lore.kernel.org/r/20250425-apc_paper_binding-v5-2-3aef49e97332@gmail.com
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

diff --git a/arch/arm/boot/dts/vt8500/Makefile b/arch/arm/boot/dts/vt8500/Makefile
index 255f4403af91c1d6a22416ab694b8eab44bf98a2..6fd29c41f3660d29d0368e4f8772d46b0a3c414c 100644 (file)
--- 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 \
+       wm8950-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 (file)
index 0000000..58b3c8d
--- /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@gmail.com>
+ */
+
+/dts-v1/;
+/include/ "wm8950.dtsi"
+
+/ {
+       model = "VIA APC Rock";
+       compatible = "via,apc-rock", "wm,wm8950";
+
+       memory@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 (file)
index 0000000..31fba05
--- /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@gmail.com>
+ */
+
+/* No differences have been discovered vs. WM8850, but chip markings differ */
+/include/ "wm8850.dtsi"
+
+/ {
+       compatible = "wm,wm8950";
+};