[PATCH v7 4/8] drm/sunxi: Add DT bindings documentation of Allwinner HDMI
Jean-Francois Moine
moinejf at free.fr
Tue Nov 29 19:27:51 UTC 2016
On Tue, 29 Nov 2016 20:46:22 +0200
Laurent Pinchart <laurent.pinchart at ideasonboard.com> wrote:
[snip]
> > +Example:
> > +
> > + hdmi: hdmi at 01ee0000 {
> > + compatible = "allwinner,sun8i-a83t-hdmi";
> > + reg = <0x01ee0000 0x20000>;
> > + clocks = <&ccu CLK_BUS_HDMI>, <&ccu CLK_HDMI>,
> > + <&ccu CLK_HDMI_DDC>;
> > + clock-names = "bus", "clock", "ddc-clock";
> > + resets = <&ccu RST_HDMI0>, <&ccu RST_HDMI1>;
> > + reset-names = "hdmi0", "hdmi1";
> > + pinctrl-names = "default";
> > + pinctrl-0 = <&hdmi_pins_a>;
> > + status = "disabled";
> > + #address-cells = <1>;
> > + #size-cells = <0>;
> > + port at 0 { /* video */
> > + reg = <0>;
> > + hdmi_tcon1: endpoint {
> > + remote-endpoint = <&tcon1_hdmi>;
> > + };
> > + };
> > + port at 1 { /* audio */
> > + reg = <1>;
> > + hdmi_i2s2: endpoint {
> > + remote-endpoint = <&i2s2_hdmi>;
> > + };
> > + };
>
> You need a third port for the HDMI encoder output, connected to an HDMI
> connector DT node.
I don't see what you mean. The HDMI device is both the encoder
and connector (as the TDA998x):
plane -> DE2 mixer ---> TCON -----> HDMI -----> display device
----- plane ------ - CRTC - - encoder \
connector -- (HDMI cable)
audio-controller - - audio-codec /
> > + };
--
Ken ar c'hentaƱ | ** Breizh ha Linux atav! **
Jef | http://moinejf.free.fr/
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