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