[U-Boot] [PATCH v2 14/17] dm: i2c: dts: Add an I2C bus for sandbox

[Masahiro Yamada]

Hi Simon,



On Tue, 11 Nov 2014 10:46:30 -0700
Simon Glass <sjg at chromium.org> wrote:

> diff --git a/arch/sandbox/dts/sandbox.dts b/arch/sandbox/dts/sandbox.dts
> index 7614715..11748ae 100644
> --- a/arch/sandbox/dts/sandbox.dts
> +++ b/arch/sandbox/dts/sandbox.dts
> @@ -134,6 +134,23 @@
>  		num-gpios = <20>;
>  	};
>  
> +	i2c at 0 {
> +		#address-cells = <1>;
> +		#size-cells = <0>;
> +		reg = <0>;
> +		compatible = "sandbox,i2c";
> +		clock-frequency = <400000>;
> +		eeprom at 2c {
> +			reg = <0x2c>;
> +			compatible = "i2c-eeprom";
> +			emul {
> +				compatible = "sandbox,i2c-eeprom";
> +				sandbox,filename = "i2c.bin";
> +				sandbox,size = <128>;
> +			};
> +		};
> +	};
> +
>  	spi at 0 {
>  		#address-cells = <1>;
>  		#size-cells = <0>;




It is not clear to me why "sandbox,i2c-eeprom"  is not placed right under "i2c at 0".

What does the intermediate node "eeprom at 2c" do?
I checked drivers/misc/i2c_eeprom.c but it does not seem to do anything.


Best Regards
Masahiro Yamada