Hi Geert, On Tue, Nov 30, 2021 at 09:13:45AM +0100, Geert Uytterhoeven wrote: > On Mon, Nov 29, 2021 at 11:17 PM Maxime Ripard <maxime@xxxxxxxxxx> wrote: > > The problem that fbtft (and this series) wants to fix is completely > > different though: it wants to address the issue the users are facing. > > Namely, you get a cheap display from wherever, connect it to your shiny > > new SBC and wants to get something on the display. > > > > In this situation, the user probably doesn't have the knowledge to > > introduce the compatible in the kernel in the first place. But there's > > also some technical barriers there: if they use secure boot, they can't > > change the kernel (well, at least the knowledge required is far above > > what we can expect from the average user). If the platform doesn't allow > > If you can change the DT, you can introduce a vulnerability to change > the kernel ;-) Indeed > > access to the DT, you can't change the DT either. > > How do people connect a cheap display from wherever to their shiny > new SBC and make it work, without modifying DT? Through overlays, usually. I guess it would still qualify as "DT", but it's not the main DT And the other issues remain the same: while the DT could be "easily" patched, the kernel certainly isn't and we need both with the current expectations. Maxime
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