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

Masahiro Yamada
2014-11-19T08:29:45Z

Hi Simon,

On Tue, 11 Nov 2014 10:46:30 -0700
Simon Glass <sjg@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