On 09/15/2015 04:37 AM, Xinwei Kong wrote: > This adds documentation of device tree bindings for the > Graphics Processing Unit of hi6220 SOC. > > Signed-off-by: Xinliang Liu <xinliang.liu@xxxxxxxxxx> > Signed-off-by: Xinwei Kong <kong.kongxinwei@xxxxxxxxxxxxx> > Signed-off-by: Andy Green <andy.green@xxxxxxxxxx> > Signed-off-by: Jiwen Qi <qijiwen@xxxxxxxxxxxxx> > Signed-off-by: Yu Gong <gongyu@xxxxxxxxxxxxx> > --- > .../devicetree/bindings/gpu/hisilicon,hi6220.txt | 69 ++++++++++++++++++++++ > 1 file changed, 69 insertions(+) > create mode 100644 Documentation/devicetree/bindings/gpu/hisilicon,hi6220.txt > > diff --git a/Documentation/devicetree/bindings/gpu/hisilicon,hi6220.txt b/Documentation/devicetree/bindings/gpu/hisilicon,hi6220.txt > new file mode 100644 > index 0000000..173ac63 > --- /dev/null > +++ b/Documentation/devicetree/bindings/gpu/hisilicon,hi6220.txt > @@ -0,0 +1,69 @@ > + * Hisilicon hi6220 Graphics Processing Unit for HiKey board > + > + ** display-subsystem: Master device for binding DRM sub-components DRM is a Linuxism that doesn't belong in the binding. > + This master device is parent node and it will be responsible to bind all > + sub-components devices node. Are these nodes a single block in the h/w? If not, you should describe the connection of sub-nodes with of-graph instead. > + - Required properties : > + - compatible: "hisilicon,display-subsystem". > + - #address-cells, #size-cells: Must be present if the device has sub-nodes. > + - ranges: to allow probing of subdevices. > + - dma-coherent: Present if dma operations are coherent. > + > + ** ade: Graphic overlay, Graphic post-processing, display timing control. > + This device is child node of display-subsystem > + - Required properties : > + - compatible: "hisilicon,hi6220-ade". > + - reg: physical base address of the ADE register and length of memory > + region. > + - reg-names: Should contain the reg names "ade_base" and "media_base". > + - interrupt: The interrupt number to the cpu. Defines the interrupt > + by ADE. > + - clocks: The clocks needed by the ADE module. > + - clock-names: the name of the clocks. > + > + ** dsi: support mipi dsi interface > + This device is child node of display-subsystem > + - Required properties : > + - compatible: "hisilicon,hi6220-dsi". > + - reg: physical base address of the DSI register and length of memory > + region. > + - clocks: The clocks needed by the DSI module. > + - clock-names: the name of the clocks. > + - encoder-slave: phandles to a 'encoder-slave' subnode which DSI connect > + ADV7533 in order to support hdmi display. What the ADV7533 binding looks like is still being discussed. "encoder-slave" is certainly DRM specific and not how it should be done. Most likely, this needs to use the of-graph ports. Also, the ADV7533 connection is specific to HiKey. This binding should just generically describe how any bridge or panel is connected. Rob -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
