riscv: dts: k1: add pinctrl property in dts.
Add pinctrl node in device tree and update
in bananapi f3 dts.
Signed-off-by: Huan Zhou <me@per1cycle.org>
Reviewed-by: Leo Yu-Chi Liang <ycliang@andestech.com>
diff --git a/arch/riscv/dts/k1-pinctrl.dtsi b/arch/riscv/dts/k1-pinctrl.dtsi
new file mode 100644
index 0000000..14e7096
--- /dev/null
+++ b/arch/riscv/dts/k1-pinctrl.dtsi
@@ -0,0 +1,19 @@
+// SPDX-License-Identifier: (GPL-2.0 OR MIT)
+/*
+ * Copyright (C) 2022 Spacemit Inc.
+ * Copyright (C) 2025 Yixun Lan <dlan@gentoo.org>
+ */
+
+#define K1_PADCONF(pin, func) (((pin) << 16) | (func))
+
+&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>;
+ };
+ };
+};