On Tue, Feb 23, 2016 at 10:34 AM, Arnd Bergmann <arnd@xxxxxxxx> wrote:
> On Tuesday 23 February 2016 10:08:05 Linus Walleij wrote:
>> I will think of a better solution, if any, for this for v4.6, but will
>> put forward something that handles the Nomadik and all the
>> other ARM reference designs for now.
>>
>
> How about still describing all known panels in the DT marked 'status="disabled"',
> but then having a minimal piece of board specific code that just enables
> whichever one gets detected at boot time?
Close but no cigar :D
It means that all panels (enabled and all disabled) have to have the same
endpoint in the of_graph.
I tried it:
panel@0 {
compatible = "panel-dpi";
port {
clcd_panel: endpoint {
remote-endpoint = <&clcd_pads>;
};
};
(...)
panel@1 {
compatible = "panel-dpi";
port {
clcd_panel: endpoint {
remote-endpoint = <&clcd_pads>;
};
};
(...)
display@10120000 {
(...)
port {
(...)
clcd_pads: endpoint@0 {
reg = <0>;
remote-endpoint = <&clcd_panel>;
arm,pl11x,tft-r0g0b0-pads = <1 7 13>;
};
};
Building the device tree:
ERROR (duplicate_label): ERROR (duplicate_label): Duplicate label
'clcd_panel' on /panel@1/port/endpoint and /panel@0/port/endpoint
Duplicate label 'clcd_panel' on /panel@1/port/endpoint and
/panel@0/port/endpoint
So the dtc does not allow duplicate node labels for the phandle
even if the node it resides in is disabled. Tough luck...
Yours,
Linus Walleij
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