Hi Rob, On Fri, 22 Sept 2023 at 10:00, Rob Herring <robh@xxxxxxxxxx> wrote: > > On Thu, Sep 21, 2023 at 1:45 PM Simon Glass <sjg@xxxxxxxxxxxx> wrote: > > > > Binman[1] is a tool for creating firmware images. It allows you to > > combine various binaries and place them in an output file. > > > > Binman uses a DT schema to describe an image, in enough detail that > > it can be automatically built from component parts, disassembled, > > replaced, listed, etc. > > > > Images are typically stored in flash, which is why this binding is > > targeted at mtd. Previous discussion is at [2] [3]. > > > > [1] https://u-boot.readthedocs.io/en/stable/develop/package/binman.html > > [2] https://lore.kernel.org/u-boot/20230821180220.2724080-3-sjg@xxxxxxxxxxxx/ > > [3] https://www.spinics.net/lists/devicetree/msg626149.html > > You missed: > > https://github.com/devicetree-org/dt-schema/pull/110 > > where I said: We certainly shouldn't duplicate the existing partitions > bindings. What's missing from them (I assume we're mostly talking > about "fixed-partitions" which has been around forever I think (before > me))? > > To repeat, unless there is some reason binman partitions conflict with > fixed-partitions, you need to start there and extend it. From what's > posted here, it neither conflicts nor needs extending. I think at this point I am just hopelessly confused. Have you taken a look at the binman schema? [1] I saw this file, which seems to extend a partition. Documentation/devicetree/bindings/mtd/partitions/brcm,bcm4908-partitions.yaml I was assuming that I should create a top-level compatible = "binman" node, with subnodes like compatible = "binman,bl31-atf", for example. I should use the compatible string to indicate the contents, right? Re extending, what is the minimum I can do? Are you looking for something like a "compress" property that indicates that the entry is compressed? I'm really just a bit lost. > > I did a bit more research. "fixed-partitions" as a compatible has > "only" been around since 2015. Prior to that, it was implicit with > just partition nodes with addresses (i.e. reg) and that dates back to > 2007. Looks like u-boot only supports the newer form and since 2021. OK Regards, Simon [1] https://u-boot.readthedocs.io/en/latest/develop/package/binman.html#image-description-format
