[U-Boot] [RFC] Remove static display data
Stefano Babic
sbabic at denx.de
Fri Jul 26 10:43:55 CEST 2013
Hi Robert, Anatolji,
On 26/07/2013 09:50, Anatolij Gustschin wrote:
>>
>> I realize that there's already the FDT and CONFIG_OF_CONTROL functionality
>> and device trees sort of cover the passing to Linux part so maybe before
>> handing it off, converting the relevant data into a device tree that Linux
>> can already use/parse would work.
>
> Devicetree bindings for describing display timings info exist in recent
> Linux kernel versions (since v3.9 I think) and are documented under
> Documentation/devicetree/bindings/video/display-timing.txt. In Linux
> there are also DT helpers to parse display timings nodes and read the
> timing values into fb_videomode structure (of_get_display_timings,
> of_get_fb_videomode). Code for adding such display timings nodes to
> the device tree under U-Boot doesn't exist yet.
IMHO adopting DT looks very interesting, as it can really simplify
sharing configuration between u-boot and kernel. On i.MX6 we have not
yet started to use DT to configure u-boot as it is already done on other
SOCs (Tegra), but it seems to me the right way to do.
Best regards,
Stefano Babic
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