On Mon, Mar 22, 2021 at 04:18:04PM +0000, Andre Przywara wrote: > On Mon, 22 Mar 2021 13:55:35 +0300 > Ivan Uvarov <i.uvarov@xxxxxxxxxxxxxxxxxx> wrote: > > Hi, > > > This patch adds the /omit-if-no-ref/ keyword to the pio nodes for > > UART0 and UART3 pins of the R40 SoC, which would reduce the fdt size on > > boards which do not use these UARTs. > > But what boards are those? It seems like all boards use uart3-pg and > the two existing boards use UART0. > > I think the idea is to use omit-if-no-ref on some rarely used nodes, so > if there is only a single user, for instance. Your next patch is a good > example. There's no real cost associated to it though, so it's just easier to flag all the nodes and let the compiler figure out if it should evict them or not. Maxime
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