Hi, On 11/13/2014 09:38 AM, Geert Uytterhoeven wrote: > On Wed, Nov 12, 2014 at 11:08 PM, Hans de Goede <hdegoede@xxxxxxxxxx> wrote: >> Since simplefb nodes do not relate directly to hw typically they have been >> placed in the root of the devicetree. As the represent runtime information >> having them as sub-nodes of /chosen is more logical, specify this. >> >> Also specify when to set the chosen stdout-path property to a simplefb node. >> >> For reliable handover to a hardware specific driver, that driver needs to >> know which simplefb to unregister when taking over, specify how the hw driver >> can find the matching simplefb node. >> >> Last add some advice on how to fill and use simplefb nodes from a firmware >> pov. >> >> Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx> > > Acked-by: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx> Thanks. > >> --- >> .../bindings/video/simple-framebuffer.txt | 37 +++++++++++++++++++++- >> 1 file changed, 36 insertions(+), 1 deletion(-) >> >> diff --git a/Documentation/devicetree/bindings/video/simple-framebuffer.txt b/Documentation/devicetree/bindings/video/simple-framebuffer.txt >> index 8f35718..95fe284 100644 >> --- a/Documentation/devicetree/bindings/video/simple-framebuffer.txt >> +++ b/Documentation/devicetree/bindings/video/simple-framebuffer.txt >> @@ -4,6 +4,26 @@ A simple frame-buffer describes a frame-buffer setup by firmware or >> the bootloader, with the assumption that the display hardware has already >> been set up to scan out from the memory pointed to by the reg property. >> >> +Since simplefb nodes represent runtime information they must be sub-nodes of >> +the chosen node (*). The primary display node must be named framebuffer0, >> +additional nodes must be called framebuffer1, etc. >> + >> +If a simplefb node represents the preferred console for user interaction, >> +then the chosen node's stdout-path property must point to it. > > You may want to add an stdout-path property to the example. That is a good idea, done for v2. Regards, Hans -- 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
