On Mon, 26 Mar 2018 20:56:45 -0600 Aaron Durbin <adur...@chromium.org> wrote:
> On Mon, Mar 26, 2018 at 12:24 PM, Alan Cox <gno...@lxorguk.ukuu.org.uk> wrote: > >> Sadly, this situation > >> is not unique to this hardware. There is hardware all over that does > >> not meet the current assumptions being made in the early uart drivers > >> within the kernel. > > > > Is there any fundamental reason you can't just embed dt entries in the > > ACPI table to describe the other features you need. I appreciate it > > doesn't solve the generic PC case but it ought to help for anything where > > the firmware cares about Linux ? > > What's the method for doing that? Using _DSD methods? Or have a > pointer to examples? Sorry, I haven't spelunked into the current state > of bridging ACPI and devicetree in a while. ACPI 5.1 adds an _DSD method UUID for device properties. The kernel device_property_* interface will pick them up just as if they came from DT tables etc. Alan
