[PATCH 6/7] riscv: dts: eswin: add I2C controller support
From: Pinkesh Vaghela
Date: Mon Jun 15 2026 - 08:21:45 EST
From: Pritesh Patel <pritesh.patel@xxxxxxxxxxxxxx>
Add I2C nodes for EIC7700 SoC.
Also add nodes for corresponding slave devices in dts file and
enable them for HiFive Premier P550 board
Signed-off-by: Pritesh Patel <pritesh.patel@xxxxxxxxxxxxxx>
Signed-off-by: Pinkesh Vaghela <pinkesh.vaghela@xxxxxxxxxxxxxx>
---
.../dts/eswin/eic7700-hifive-premier-p550.dts | 52 ++++++
arch/riscv/boot/dts/eswin/eic7700.dtsi | 156 ++++++++++++++++++
2 files changed, 208 insertions(+)
diff --git a/arch/riscv/boot/dts/eswin/eic7700-hifive-premier-p550.dts b/arch/riscv/boot/dts/eswin/eic7700-hifive-premier-p550.dts
index e7bb96e14958..0f0c98474c62 100644
--- a/arch/riscv/boot/dts/eswin/eic7700-hifive-premier-p550.dts
+++ b/arch/riscv/boot/dts/eswin/eic7700-hifive-premier-p550.dts
@@ -130,6 +130,58 @@ &gpio111_pins {
input-disable;
};
+&aon_i2c0 {
+ status = "okay";
+
+ eeprom@50 {
+ compatible = "atmel,24c02";
+ reg = <0x50>;
+ };
+};
+
+&aon_i2c1 {
+ status = "okay";
+
+ pac1934@10 {
+ compatible = "microchip,pac1934";
+ reg = <0x10>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ channel@1 {
+ reg = <0x1>;
+ shunt-resistor-micro-ohms = <1000>;
+ label = "VDD_SOM";
+ };
+
+ channel@2 {
+ reg = <0x2>;
+ shunt-resistor-micro-ohms = <1000>;
+ label = "VDD_SOC";
+ };
+
+ channel@3 {
+ reg = <0x3>;
+ shunt-resistor-micro-ohms = <1000>;
+ label = "VDD_CPU";
+ };
+
+ channel@4 {
+ reg = <0x4>;
+ shunt-resistor-micro-ohms = <1000>;
+ label = "VDD_LPDDR";
+ };
+ };
+
+ ina226@44 {
+ compatible = "ti,ina226";
+ reg = <0x44>;
+ #io-channel-cells = <1>;
+ label = "sys_power";
+ shunt-resistor = <1000>;
+ };
+};
+
&pinctrl {
vrgmii-supply = <&vcc_1v8>;
};
diff --git a/arch/riscv/boot/dts/eswin/eic7700.dtsi b/arch/riscv/boot/dts/eswin/eic7700.dtsi
index f8caf39616b2..28706431b2c0 100644
--- a/arch/riscv/boot/dts/eswin/eic7700.dtsi
+++ b/arch/riscv/boot/dts/eswin/eic7700.dtsi
@@ -315,6 +315,162 @@ uart4: serial@50940000 {
status = "disabled";
};
+ i2c0: i2c@50950000 {
+ compatible = "snps,designware-i2c";
+ reg = <0x0 0x50950000 0x0 0x8000>;
+ interrupts = <105>;
+ clocks = <&clk EIC7700_CLK_GATE_LSP_I2C0_PCLK>;
+ clock-names = "ref";
+ clock-frequency = <100000>;
+ resets = <&reset EIC7700_RESET_I2C0>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ status = "disabled";
+ };
+
+ i2c1: i2c@50960000 {
+ compatible = "snps,designware-i2c";
+ reg = <0x0 0x50960000 0x0 0x8000>;
+ interrupts = <106>;
+ clocks = <&clk EIC7700_CLK_GATE_LSP_I2C1_PCLK>;
+ clock-names = "ref";
+ clock-frequency = <100000>;
+ resets = <&reset EIC7700_RESET_I2C1>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ status = "disabled";
+ };
+
+ i2c2: i2c@50970000 {
+ compatible = "snps,designware-i2c";
+ reg = <0x0 0x50970000 0x0 0x8000>;
+ interrupts = <107>;
+ clocks = <&clk EIC7700_CLK_GATE_LSP_I2C2_PCLK>;
+ clock-names = "ref";
+ clock-frequency = <100000>;
+ resets = <&reset EIC7700_RESET_I2C2>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ status = "disabled";
+ };
+
+ i2c3: i2c@50980000 {
+ compatible = "snps,designware-i2c";
+ reg = <0x0 0x50980000 0x0 0x8000>;
+ interrupts = <108>;
+ clocks = <&clk EIC7700_CLK_GATE_LSP_I2C3_PCLK>;
+ clock-names = "ref";
+ clock-frequency = <100000>;
+ resets = <&reset EIC7700_RESET_I2C3>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ status = "disabled";
+ };
+
+ i2c4: i2c@50990000 {
+ compatible = "snps,designware-i2c";
+ reg = <0x0 0x50990000 0x0 0x8000>;
+ interrupts = <109>;
+ clocks = <&clk EIC7700_CLK_GATE_LSP_I2C4_PCLK>;
+ clock-names = "ref";
+ clock-frequency = <100000>;
+ resets = <&reset EIC7700_RESET_I2C4>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ status = "disabled";
+ };
+
+ i2c5: i2c@509a0000 {
+ compatible = "snps,designware-i2c";
+ reg = <0x0 0x509a0000 0x0 0x8000>;
+ interrupts = <110>;
+ clocks = <&clk EIC7700_CLK_GATE_LSP_I2C5_PCLK>;
+ clock-names = "ref";
+ clock-frequency = <100000>;
+ resets = <&reset EIC7700_RESET_I2C5>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ status = "disabled";
+ };
+
+ i2c6: i2c@509b0000 {
+ compatible = "snps,designware-i2c";
+ reg = <0x0 0x509b0000 0x0 0x8000>;
+ interrupts = <111>;
+ clocks = <&clk EIC7700_CLK_GATE_LSP_I2C6_PCLK>;
+ clock-names = "ref";
+ clock-frequency = <100000>;
+ resets = <&reset EIC7700_RESET_I2C6>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ status = "disabled";
+ };
+
+ i2c7: i2c@509c0000 {
+ compatible = "snps,designware-i2c";
+ reg = <0x0 0x509c0000 0x0 0x8000>;
+ interrupts = <112>;
+ clocks = <&clk EIC7700_CLK_GATE_LSP_I2C7_PCLK>;
+ clock-names = "ref";
+ clock-frequency = <100000>;
+ resets = <&reset EIC7700_RESET_I2C7>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ status = "disabled";
+ };
+
+ i2c8: i2c@509d0000 {
+ compatible = "snps,designware-i2c";
+ reg = <0x0 0x509d0000 0x0 0x8000>;
+ interrupts = <113>;
+ clocks = <&clk EIC7700_CLK_GATE_LSP_I2C8_PCLK>;
+ clock-names = "ref";
+ clock-frequency = <100000>;
+ resets = <&reset EIC7700_RESET_I2C8>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ status = "disabled";
+ };
+
+ i2c9: i2c@509e0000 {
+ compatible = "snps,designware-i2c";
+ reg = <0x0 0x509e0000 0x0 0x8000>;
+ interrupts = <114>;
+ clocks = <&clk EIC7700_CLK_GATE_LSP_I2C9_PCLK>;
+ clock-names = "ref";
+ clock-frequency = <100000>;
+ resets = <&reset EIC7700_RESET_I2C9>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ status = "disabled";
+ };
+
+ aon_i2c0: i2c@51830000 {
+ compatible = "snps,designware-i2c";
+ reg = <0x0 0x51830000 0x0 0x8000>;
+ interrupts = <290>;
+ clocks = <&clk EIC7700_CLK_GATE_AON_I2C0_PCLK>;
+ clock-names = "ref";
+ clock-frequency = <100000>;
+ resets = <&reset EIC7700_RESET_ANO0>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ status = "disabled";
+ };
+
+ aon_i2c1: i2c@51838000 {
+ compatible = "snps,designware-i2c";
+ reg = <0x0 0x51838000 0x0 0x8000>;
+ interrupts = <291>;
+ clocks = <&clk EIC7700_CLK_GATE_AON_I2C1_PCLK>;
+ clock-names = "ref";
+ clock-frequency = <100000>;
+ resets = <&reset EIC7700_RESET_ANO1>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ status = "disabled";
+ };
+
gpio@51600000 {
compatible = "snps,dw-apb-gpio";
reg = <0x0 0x51600000 0x0 0x80>;
--
2.34.1