Re: [PATCH] arm64: dts: imx8mp: Enable HDMI on i.MX8MP DHCOM PDK2 and PDK3

[Marek Vasut]

On 5/16/24 10:00 AM, Francesco Dolcini wrote:
> Hello Marek,

Hi,

> On Tue, May 14, 2024 at 03:06:42AM +0200, Marek Vasut wrote:
> > Enable HDMI output on i.MX8MP DHCOM PDK2 and PDK3. The I2C5 on PDK2 and
> > I2C mux port 1 on PDK3 respectively are used in regular I2C mode instead
> > of HDMI DDC mode to permit connection of other I2C devices on those buses.
>
> Are you able to read the HDMI EDID with such configuration? I have the
> patch ready for verdin imx8mp, I just did not have time to figure out
> this last details.

Yes with ddc-i2c-bus in hdmi_tx{} node, no with ddc-i2c-bus in connector 
node. Maybe that's what you're running into ? The DW HDMI core needs the 
ddc-i2c-bus property in hdmi_tx{} node if you use non-native I2C bus for 
the DDC channel.