board: rockchip: Add the Turing RK1 SoM

The Turing RK1 is a Rockchip RK3588 based SoM from Turing Machines.

Specifications:

    Rockchip RK3588 SoC
    4x ARM Cortex-A76, 4x ARM Cortex-A55
    8/16/32GB memory LPDDR4x
    Mali G610MC4 GPU
    32GB eMMC HS400
    2x USB 2.0, 2x USB 3.0
    2x MIPI CSI 4x lanes
    1x MIPI-DSI DPHY 2x lanes
    PCIe 2.0 x1, PCIe 3.0 x4
    1x HDMI 2.1 output, 1x DP 1.4 output
    Gigabit Ethernet
    Size: 69.6mm x 45mm (260-pin SO-DIMM connector)

Kernel commit:
2806a69f3fef ("arm64: dts: rockchip: Add Turing RK1 SoM support")

Signed-off-by: Joshua Riek <jjriek@verizon.net>
Tested-by: Sam Edwards <CFSworks@gmail.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
diff --git a/arch/arm/dts/rk3588-turing-rk1.dts b/arch/arm/dts/rk3588-turing-rk1.dts
new file mode 100644
index 0000000..7bcad28
--- /dev/null
+++ b/arch/arm/dts/rk3588-turing-rk1.dts
@@ -0,0 +1,21 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * This device tree covers the common case where the RK1 is used as a
+ * "compute node" system, where the carrier board is functioning more like a
+ * generic backplane (with no non-autoenumerable peripherals of its own) than
+ * like a device that the SoM is meant to enable.
+ *
+ * Copyright (c) 2023 Sam Edwards <CFSworks@gmail.com>
+ */
+
+/dts-v1/;
+#include "rk3588-turing-rk1.dtsi"
+
+/ {
+	model = "Turing Machines RK1";
+	compatible = "turing,rk1", "rockchip,rk3588";
+
+	chosen {
+		stdout-path = "serial9:115200n8";
+	};
+};