On 2022/01/02 14:58, Linus Walleij wrote: > On Sun, Dec 26, 2021 at 4:38 PM Hector Martin <marcan@xxxxxxxxx> wrote: > >> On DT platforms, the module-instance and antenna-sku-info properties >> are passed in the DT. On ACPI platforms, module-instance is passed via >> the analogous Apple device property mechanism, while the antenna SKU >> info is instead obtained via an ACPI method that grabs it from >> non-volatile storage. >> >> Add support for this, to allow proper firmware selection on Apple >> platforms. >> >> Signed-off-by: Hector Martin <marcan@xxxxxxxxx> > > If the strings treated here are exactly the same as for the device tree, > you should be able to just use "devprops" (firmware node) to handle it > abstractly, and then the respective DT and ACPI backend will provide > the properties. > > I don't know if this patch I made recently is enough of an examples: > https://lore.kernel.org/linux-hwmon/20211206020423.62402-2-linus.walleij@xxxxxxxxxx/ > > If the ACPI and DT differs a lot in format and strings etc it may not > be worth it. It's not quite the same; module-instance is the same from macOS' perspective, but we don't use Apple's device tree directly but rather roll our own DT which uses a different property name in this case. antenna-sku-info uses an ACPI method on x86, so that one is completely different. So in the end nothing is actually shared. -- Hector Martin (marcan@xxxxxxxxx) Public Key: https://mrcn.st/pub
