[PATCH] ARM: dts: Add ddc i2c reference to veyron

Rob Herring robherring2 at gmail.com
Thu Sep 3 08:46:20 PDT 2015

On Thu, Sep 3, 2015 at 10:18 AM, Russell King - ARM Linux
<linux at arm.linux.org.uk> wrote:
> On Thu, Sep 03, 2015 at 09:46:38AM -0500, Rob Herring wrote:
>> Yes, that is fairly common (ADV75xx is same), and we would not
>> describe an I2C bus in DT in that case. Same with HPD directly handled
>> vs. a GPIO line. That is no different than what Doug has said:
>> ddc-i2c-bus is present if using the SOC's I2C host and absent if using
>> the HDMI block's DDC functionality. I'm only questioning the location
>> of the property.
> No, I don't think that's what Doug wants.  Doug wants the bridge's
> internal I2C host to be exposed, so he can number it through a DT
> alias.

See his earlier reply and other patch[1] which states once the dw_hdmi
built-in I2C controller support is added in mainline, then this
property is not needed. For now, the SOC's general purpose I2C
controller is used.


[1] https://lkml.org/lkml/2015/9/2/571

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