[PATCH 6/7] riscv: dts: eswin: add I2C controller support

[Conor Dooley]

On Mon, Jun 15, 2026 at 05:50:15PM +0530, Pinkesh Vaghela wrote:
> From: Pritesh Patel <pritesh.patel at einfochips.com>
> 
> 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 at einfochips.com>
> Signed-off-by: Pinkesh Vaghela <pinkesh.vaghela at einfochips.com>
> ---
>  .../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 at 50 {
> +		compatible = "atmel,24c02";
> +		reg = <0x50>;
> +	};
> +};
> +
> +&aon_i2c1 {
> +	status = "okay";
> +
> +	pac1934 at 10 {

Generic node name here please. adc I think.

> +		compatible = "microchip,pac1934";
> +		reg = <0x10>;
> +		#address-cells = <1>;
> +		#size-cells = <0>;
> +
> +		channel at 1 {
> +			reg = <0x1>;
> +			shunt-resistor-micro-ohms = <1000>;
> +			label = "VDD_SOM";
> +		};
> +
> +		channel at 2 {
> +			reg = <0x2>;
> +			shunt-resistor-micro-ohms = <1000>;
> +			label = "VDD_SOC";
> +		};
> +
> +		channel at 3 {
> +			reg = <0x3>;
> +			shunt-resistor-micro-ohms = <1000>;
> +			label = "VDD_CPU";
> +		};
> +
> +		channel at 4 {
> +			reg = <0x4>;
> +			shunt-resistor-micro-ohms = <1000>;
> +			label = "VDD_LPDDR";
> +		};
> +	};
> +
> +	ina226 at 44 {

And here. power-sensor.

> +		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 at 50940000 {
>  			status = "disabled";
>  		};
>  
> +		i2c0: i2c at 50950000 {
> +			compatible = "snps,designware-i2c";

Missing a soc-specific compatible here for all i2c controllers.


Cheers,
Conor.
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