[PATCH 1/4] riscv: dts: spacemit: enable the i2c2 adapter on K3 Pico-ITX board

[E Shattow <e@freeshell.de>]

From: Aurelien Jarno <aurelien@aurel32.net>

Define I2C2 pinctrl properties, and enable it on the K3 Pico-ITX board.
It will be used by the 24c02 eeprom.

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Reviewed-by: Yixun Lan <dlan@kernel.org>
Link: https://patch.msgid.link/20260623204431.498700-3-aurelien@aurel32.net
Signed-off-by: Yixun Lan <dlan@kernel.org>

[ upstream commit: 48dd3d020528e05795dfa46308ba5b59a1835bba ]

(cherry picked from commit 5b8d10184a9e7fb8b31d279e09e3673b8d69f690)
---
 dts/upstream/src/riscv/spacemit/k3-pico-itx.dts |  6 ++++++
 dts/upstream/src/riscv/spacemit/k3-pinctrl.dtsi | 11 +++++++++++
 2 files changed, 17 insertions(+)

diff --git a/dts/upstream/src/riscv/spacemit/k3-pico-itx.dts b/dts/upstream/src/riscv/spacemit/k3-pico-itx.dts
index b89c1521e664..dde6028a5ef3 100644
--- a/dts/upstream/src/riscv/spacemit/k3-pico-itx.dts
+++ b/dts/upstream/src/riscv/spacemit/k3-pico-itx.dts
@@ -43,6 +43,12 @@
 	};
 };
 
+&i2c2 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&i2c2_1_cfg>;
+	status = "okay";
+};
+
 &i2c8 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&i2c8_cfg>;
diff --git a/dts/upstream/src/riscv/spacemit/k3-pinctrl.dtsi b/dts/upstream/src/riscv/spacemit/k3-pinctrl.dtsi
index 3ee1471f3798..50dc124c097f 100644
--- a/dts/upstream/src/riscv/spacemit/k3-pinctrl.dtsi
+++ b/dts/upstream/src/riscv/spacemit/k3-pinctrl.dtsi
@@ -78,6 +78,17 @@
 		};
 	};
 
+	/omit-if-no-ref/
+	i2c2_1_cfg: i2c2-1-cfg {
+		i2c2-1-pins {
+			pinmux = <K3_PADCONF(46, 5)>,	/* i2c2 scl */
+				 <K3_PADCONF(47, 5)>;	/* i2c2 sda */
+
+			bias-pull-up = <0>;
+			drive-strength = <25>;
+		};
+	};
+
 	/omit-if-no-ref/
 	i2c8_cfg: i2c8-cfg {
 		i2c8-pins {
-- 
2.53.0