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    SubjectRe: [PATCH 2/2] x86: intel-mid: add watchdog platform code for Merrifield
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    On Wednesday 09 April 2014 14:58:48, One Thousand Gnomes wrote:
    > > I'm getting curious: How can I use device-tree on x86(_64)?
    > > Reading the dependencies from CONFIG_OF it can only be used on 32bit systems with some special hardware bases.
    > > So, how to use otherwise?
    >
    > There isn't any fundamental thing tying device tree to a given
    > architecture or 32bitness, it's just that sane PC architectures use ACPI
    > to enumerate devices, and/or have a discoverable bus architecture.
    >
    > Some of the phones don't so this now becoems a point of consideration. In
    > fact it's already also used on CE4100 (which is an embedded media SoC
    > found in some TV devices and set-top boxes) and on the OLPC (One laptop
    > per child). There is no intrinsic reason it couldn't be used in other x86
    > special cases.
    >
    > If its PC shaped however it probably has ACPI and ACPI and DT are not a
    > 1:1 mapping. ACPI has method invocations, and various firmware provided
    > interfaces such as the EC, Device tree is better at some other bits.

    Yep, like SPI devices on embedded x86 hardware.

    > Converting the phones to embedded device tree rather than adding a
    > billion little platform files on the other hand seems to me like a
    > no-brainer.

    I found http://thread.gmane.org/gmane.linux.drivers.devicetree/4475. Why didn't that get into mainline?

    Best regards,
    Alexander
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    Dipl.-Inf. Alexander Stein

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