1 files changed, 23 insertions, 0 deletions
diff --git a/arch/riscv/boot/dts/spacemit/k1-pinctrl.dtsi b/arch/riscv/boot/dts/spacemit/k1-pinctrl.dtsi
new file mode 100644
index 000000000000..283663647a86
--- /dev/null
+++ b/arch/riscv/boot/dts/spacemit/k1-pinctrl.dtsi
@@ -0,0 +1,23 @@
+// SPDX-License-Identifier: GPL-2.0 OR MIT
+/*
+ * Copyright (c) 2024 Yixun Lan <dlan@gentoo.org>
+ */
+
+#include <dt-bindings/gpio/gpio.h>
+
+#define K1_PADCONF(pin, func) (((pin) << 16) | (func))
+
+/* Map GPIO pin to each bank's <index, offset> */
+#define K1_GPIO(x)	(x / 32) (x % 32)
+
+&pinctrl {
+	uart0_2_cfg: uart0-2-cfg {
+		uart0-2-pins {
+			pinmux = <K1_PADCONF(68, 2)>,
+				 <K1_PADCONF(69, 2)>;
+
+			bias-pull-up = <0>;
+			drive-strength = <32>;
+		};
+	};
+};