From: Zi-Yu Chen <zychennvt@gmail.com>
To: andi.shyti@kernel.org, ychuang3@nuvoton.com
Cc: robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org,
linux-i2c@vger.kernel.org, devicetree@vger.kernel.org,
linux-arm-kernel@lists.infradead.org, zychennvt@gmail.com
Subject: [PATCH v2 3/3] arm64: dts: nuvoton: Add I2C nodes for MA35D1 SoC
Date: Mon, 16 Mar 2026 06:37:26 +0000 [thread overview]
Message-ID: <20260316063726.41048-4-zychennvt@gmail.com> (raw)
In-Reply-To: <20260316063726.41048-1-zychennvt@gmail.com>
Add I2C controller nodes to the MA35D1 SoC dtsi.
Also enable the I2C interfaces on the MA35D1 SOM board
to allow communication with onboard peripherals.
Signed-off-by: Zi-Yu Chen <zychennvt@gmail.com>
---
.../boot/dts/nuvoton/ma35d1-som-256m.dts | 18 +++++-
arch/arm64/boot/dts/nuvoton/ma35d1.dtsi | 60 +++++++++++++++++++
2 files changed, 77 insertions(+), 1 deletion(-)
diff --git a/arch/arm64/boot/dts/nuvoton/ma35d1-som-256m.dts b/arch/arm64/boot/dts/nuvoton/ma35d1-som-256m.dts
index f6f20a17e501..4dfb5340a139 100644
--- a/arch/arm64/boot/dts/nuvoton/ma35d1-som-256m.dts
+++ b/arch/arm64/boot/dts/nuvoton/ma35d1-som-256m.dts
@@ -13,6 +13,7 @@ / {
compatible = "nuvoton,ma35d1-som", "nuvoton,ma35d1";
aliases {
+ i2c0 = &i2c2;
serial0 = &uart0;
serial11 = &uart11;
serial12 = &uart12;
@@ -55,6 +56,12 @@ &clk {
"integer";
};
+&i2c1 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_i2c1>;
+ status = "okay";
+};
+
&pinctrl {
uart-grp {
pinctrl_uart0: uart0-pins {
@@ -98,6 +105,15 @@ pinctrl_uart16: uart16-pins {
power-source = <1>;
};
};
+
+ i2c-grp {
+ pinctrl_i2c1: i2c1-pins {
+ nuvoton,pins = <1 10 12>,
+ <1 11 12>;
+ bias-disable;
+ };
+
+ };
};
&uart0 {
@@ -128,4 +144,4 @@ &uart16 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_uart16>;
status = "okay";
-};
+};
\ No newline at end of file
diff --git a/arch/arm64/boot/dts/nuvoton/ma35d1.dtsi b/arch/arm64/boot/dts/nuvoton/ma35d1.dtsi
index e51b98f5bdce..a88d1c2938e7 100644
--- a/arch/arm64/boot/dts/nuvoton/ma35d1.dtsi
+++ b/arch/arm64/boot/dts/nuvoton/ma35d1.dtsi
@@ -372,6 +372,66 @@ uart15: serial@407f0000 {
status = "disabled";
};
+ i2c1: i2c@40810000 {
+ compatible = "nuvoton,ma35d1-i2c";
+ reg = <0x0 0x40810000 0x0 0x1000>;
+ interrupts = <GIC_SPI 69 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&clk I2C1_GATE>;
+ clock-frequency = <100000>;
+ resets = <&sys MA35D1_RESET_I2C1>;
+ status = "disabled";
+ #address-cells = <1>;
+ #size-cells = <0>;
+ };
+
+ i2c2: i2c@40820000 {
+ compatible = "nuvoton,ma35d1-i2c";
+ reg = <0x0 0x40820000 0x0 0x1000>;
+ interrupts = <GIC_SPI 97 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&clk I2C2_GATE>;
+ clock-frequency = <100000>;
+ resets = <&sys MA35D1_RESET_I2C2>;
+ status = "disabled";
+ #address-cells = <1>;
+ #size-cells = <0>;
+ };
+
+ i2c3: i2c@40830000 {
+ compatible = "nuvoton,ma35d1-i2c";
+ reg = <0x0 0x40830000 0x0 0x1000>;
+ interrupts = <GIC_SPI 98 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&clk I2C3_GATE>;
+ clock-frequency = <100000>;
+ resets = <&sys MA35D1_RESET_I2C3>;
+ status = "disabled";
+ #address-cells = <1>;
+ #size-cells = <0>;
+ };
+
+ i2c4: i2c@40840000 {
+ compatible = "nuvoton,ma35d1-i2c";
+ reg = <0x0 0x40840000 0x0 0x1000>;
+ interrupts = <GIC_SPI 123 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&clk I2C4_GATE>;
+ clock-frequency = <100000>;
+ resets = <&sys MA35D1_RESET_I2C4>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ status = "disabled";
+ };
+
+ i2c5: i2c@40850000 {
+ compatible = "nuvoton,ma35d1-i2c";
+ reg = <0x0 0x40850000 0x0 0x1000>;
+ interrupts = <GIC_SPI 124 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&clk I2C5_GATE>;
+ clock-frequency = <100000>;
+ resets = <&sys MA35D1_RESET_I2C5>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ status = "disabled";
+ };
+
uart16: serial@40880000 {
compatible = "nuvoton,ma35d1-uart";
reg = <0x0 0x40880000 0x0 0x100>;
--
2.34.1
prev parent reply other threads:[~2026-03-16 6:37 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-16 6:37 [PATCH v2 0/3] i2c: ma35d1: Add support for MA35D1 I2C controller Zi-Yu Chen
2026-03-16 6:37 ` [PATCH v2 1/3] dt-bindings: i2c: nuvoton,ma35d1-i2c: Add " Zi-Yu Chen
2026-03-16 6:37 ` [PATCH v2 2/3] i2c: ma35d1: Add Nuvoton MA35D1 I2C driver support Zi-Yu Chen
2026-03-16 6:37 ` Zi-Yu Chen [this message]
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