[PATCH v2 3/4] riscv: dts: spacemit: add pinctrl support for K1 SoC

[Yixun Lan <dlan@xxxxxxxxxx>]

Add pinctrl device tree data to SpacemiT's K1 SoC.

Signed-off-by: Yixun Lan <dlan@xxxxxxxxxx>
---
Note, only minimal device tree data added in this series,
which just try to demonstrate this pinctrl driver, but
more dt data can be added later, in separate patches.
---
 arch/riscv/boot/dts/spacemit/k1-pinctrl.dtsi | 19 +++++++++++++++++++
 arch/riscv/boot/dts/spacemit/k1.dtsi         |  5 +++++
 2 files changed, 24 insertions(+)

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 0000000000000..38ccaad1209f5
--- /dev/null
+++ b/arch/riscv/boot/dts/spacemit/k1-pinctrl.dtsi
@@ -0,0 +1,19 @@
+// SPDX-License-Identifier: GPL-2.0 OR MIT
+/*
+ * Copyright (c) 2024 Yixun Lan <dlan@xxxxxxxxxx>
+ */
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/pinctrl/spacemit,k1-pinctrl.h>
+
+&pinctrl {
+	uart0_2_cfg: uart0-2-cfg {
+		uart0-2-pins {
+			pinmux = <K1_PADCONF(GPIO_68, 2)>,
+				 <K1_PADCONF(GPIO_69, 2)>;
+
+			bias-pull-up;
+			drive-strength-microamp = <32>;
+		};
+	};
+};
diff --git a/arch/riscv/boot/dts/spacemit/k1.dtsi b/arch/riscv/boot/dts/spacemit/k1.dtsi
index 0777bf9e01183..a2d5f7d4a942a 100644
--- a/arch/riscv/boot/dts/spacemit/k1.dtsi
+++ b/arch/riscv/boot/dts/spacemit/k1.dtsi
@@ -416,6 +416,11 @@ uart9: serial@d4017800 {
 			status = "disabled";
 		};
 
+		pinctrl: pinctrl@d401e000 {
+			compatible = "spacemit,k1-pinctrl";
+			reg = <0x0 0xd401e000 0x0 0x400>;
+		};
+
 		plic: interrupt-controller@e0000000 {
 			compatible = "spacemit,k1-plic", "sifive,plic-1.0.0";
 			reg = <0x0 0xe0000000 0x0 0x4000000>;

-- 
2.45.2