On Mon, 10 Mar 2014 12:18:20 +0200, Tomi Valkeinen <tomi.valkeinen@xxxxxx> wrote: > On 08/03/14 13:41, Grant Likely wrote: > > >> Ok. If we go for single directional link, the question is then: which > >> way? And is the direction different for display and camera, which are > >> kind of reflections of each other? > > > > In general I would recommend choosing whichever device you would > > sensibly think of as a master. In the camera case I would choose the > > camera controller node instead of the camera itself, and in the display > > case I would choose the display controller instead of the panel. The > > binding author needs to choose what she things makes the most sense, but > > drivers can still use if it it turns out to be 'backwards' > > I would perhaps choose the same approach, but at the same time I think > it's all but clear. The display controller doesn't control the panel any > more than a DMA controller controls, say, the display controller. In a sense it doesn't actually matter. You sensibly want to choose the most likely direction that drivers would go looking for a device it depends on, but it can be matched up at runtime regardless of the direction chosen by the binding. g. -- 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
