Hi, On Sat, May 19, 2018 at 08:31:16PM +0200, Jernej Skrabec wrote: > TCON TOP main purpose is to configure whole display pipeline. It > determines relationships between mixers and TCONs, selects source TCON > for HDMI, muxes LCD and TV encoder GPIO output, I'm not sure you mean GPIO here, but rather pin? > selects TV encoder clock source and contains additional TV TCON and > DSI gates. > > Signed-off-by: Jernej Skrabec <jernej.skrabec@xxxxxxxx> > --- > .../bindings/display/sunxi/sun4i-drm.txt | 20 +++++++++++++++++++ > 1 file changed, 20 insertions(+) > > diff --git a/Documentation/devicetree/bindings/display/sunxi/sun4i-drm.txt b/Documentation/devicetree/bindings/display/sunxi/sun4i-drm.txt > index 3346c1e2a7a0..a099957ab62a 100644 > --- a/Documentation/devicetree/bindings/display/sunxi/sun4i-drm.txt > +++ b/Documentation/devicetree/bindings/display/sunxi/sun4i-drm.txt > @@ -187,6 +187,26 @@ And on the A23, A31, A31s and A33, you need one more clock line: > - 'lvds-alt': An alternative clock source, separate from the TCON channel 0 > clock, that can be used to drive the LVDS clock > > +TCON TOP > +-------- > + > +TCON TOPs main purpose is to configure whole display pipeline. It determines > +relationships between mixers and TCONs, selects source TCON for HDMI, muxes > +LCD and TV encoder GPIO output, selects TV encoder clock source and contains > +additional TV TCON and DSI gates. > + > +Required properties: > + - compatible: value must be one of: > + * allwinner,sun8i-r40-tcon-top > + - reg: base address and size of the memory-mapped region. > + - clocks: phandle to the clocks feeding the TCON TOP > + * bus: TCON TOP interface clock > + - clock-names: clock name mentioned above > + - resets: phandle to the reset line driving the DRC > + * rst: TCON TOP reset line > + - reset-names: reset name mentioned above > + - #clock-cells : must contain 1 > + I guess you should better describe the OF-graph endpoints, and the clocks output. Just using the binding additions here doesn't allow to get a clear idea of how the DT should look like. Maxime -- Maxime Ripard, Bootlin (formerly Free Electrons) Embedded Linux and Kernel engineering https://bootlin.com
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