riscv: dts: thead: add sipeed Lichee Pi 4A board device tree

Sipeed's Lichee Pi 4A development board uses Lichee Module 4A core
module which is powered by T-HEAD's TH1520 SoC. Add minimal device
tree files for the core module and the development board.

Support basic uart/gpio/dmac drivers, so supports booting to a basic
shell.

Signed-off-by: Jisheng Zhang <jszhang@kernel.org>
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>

diff --git a/arch/riscv/boot/dts/Makefile b/arch/riscv/boot/dts/Makefile
index f0d9f89..1e88486 100644 (file)
--- a/arch/riscv/boot/dts/Makefile
+++ b/arch/riscv/boot/dts/Makefile
@@ -2,6 +2,7 @@
 subdir-y += allwinner
 subdir-y += sifive
 subdir-y += starfive
+subdir-y += thead
 subdir-y += canaan
 subdir-y += microchip
 subdir-y += renesas

diff --git a/arch/riscv/boot/dts/thead/Makefile b/arch/riscv/boot/dts/thead/Makefile
new file mode 100644 (file)
index 0000000..e311fc9
--- /dev/null
+++ b/arch/riscv/boot/dts/thead/Makefile
@@ -0,0 +1,2 @@
+# SPDX-License-Identifier: GPL-2.0
+dtb-$(CONFIG_ARCH_THEAD) += th1520-lichee-pi-4a.dtb

diff --git a/arch/riscv/boot/dts/thead/th1520-lichee-module-4a.dtsi b/arch/riscv/boot/dts/thead/th1520-lichee-module-4a.dtsi
new file mode 100644 (file)
index 0000000..4b0249a
--- /dev/null
+++ b/arch/riscv/boot/dts/thead/th1520-lichee-module-4a.dtsi
@@ -0,0 +1,38 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2023 Jisheng Zhang <jszhang@kernel.org>
+ */
+
+/dts-v1/;
+
+#include "th1520.dtsi"
+
+/ {
+       model = "Sipeed Lichee Module 4A";
+       compatible = "sipeed,lichee-module-4a", "thead,th1520";
+
+       memory@0 {
+               device_type = "memory";
+               reg = <0x0 0x00000000 0x2 0x00000000>;
+       };
+};
+
+&osc {
+       clock-frequency = <24000000>;
+};
+
+&osc_32k {
+       clock-frequency = <32768>;
+};
+
+&apb_clk {
+       clock-frequency = <62500000>;
+};
+
+&uart_sclk {
+       clock-frequency = <100000000>;
+};
+
+&dmac0 {
+       status = "okay";
+};

diff --git a/arch/riscv/boot/dts/thead/th1520-lichee-pi-4a.dts b/arch/riscv/boot/dts/thead/th1520-lichee-pi-4a.dts
new file mode 100644 (file)
index 0000000..a1248b2
--- /dev/null
+++ b/arch/riscv/boot/dts/thead/th1520-lichee-pi-4a.dts
@@ -0,0 +1,32 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2023 Jisheng Zhang <jszhang@kernel.org>
+ */
+
+#include "th1520-lichee-module-4a.dtsi"
+
+/ {
+       model = "Sipeed Lichee Pi 4A";
+       compatible = "sipeed,lichee-pi-4a", "sipeed,lichee-module-4a", "thead,th1520";
+
+       aliases {
+               gpio0 = &gpio0;
+               gpio1 = &gpio1;
+               gpio2 = &gpio2;
+               gpio3 = &gpio3;
+               serial0 = &uart0;
+               serial1 = &uart1;
+               serial2 = &uart2;
+               serial3 = &uart3;
+               serial4 = &uart4;
+               serial5 = &uart5;
+       };
+
+       chosen {
+               stdout-path = "serial0:115200n8";
+       };
+};
+
+&uart0 {
+       status = "okay";
+};