> [EMAIL PROTECTED] { // PSC2
> compatible = "mpc5200b-psc-ac97","mpc5200-psc-ac97";
> cell-index = <1>;
> reg = <2200 100>;
> interrupts = <2 2 0>;
> interrupt-parent = <&mpc5200_pic>;
You need #address-cells, #size-cells here.
> [EMAIL PROTECTED] {
> compatible = "idt,stac9766";
> reg = <0>;
> };
> };
>
> [EMAIL PROTECTED] {
> compatible = "mpc5200b-i2c","mpc5200-i2c","fsl-i2c";
> reg = <3d40 40>;
> interrupts = <2 10 0>;
> interrupt-parent = <&mpc5200_pic>;
> fsl5200-clocking;
And here.
> [EMAIL PROTECTED] {
> compatible = "ti,tas5504";
> reg = <15>;
> i2s-handle = <[EMAIL PROTECTED]>;
Should use an alias here (or the full path, if that works).
> };
> };
>
> [EMAIL PROTECTED] { // PSC4
> compatible = "mpc5200b-psc-i2s","mpc5200-psc-i2s";
> cell-index = <1>;
> reg = <2400 100>;
> interrupts = <2 3 0>;
> interrupt-parent = <&mpc5200_pic>;
> };
>
> In the ALSA SOC model the i2s, codec and ac97 drivers are all generic.
> A fabric driver tells specifically how a generic codec is wired into
> the board. What I haven't been able figure out is how to load the
> right fabric driver.
Whatever way works for the platform.
> It is starting to make more sense to me that fabric driver actually
> does represent a physical device - the cluster of wires.
That's only part of it, as far as I understand.
> David Gibson
> made a proposal that a fabric node wrap the codec node. That doesn't
> work very well with the i2c bus where the bus code is walking down the
> nodes and triggering the instantiation of the i2c drivers.
Yeah, doesn't work at all.
> But what about putting the fabric node inside the codec node?
_Which_ codec node? Having more than one isn't uncommon at all.
There is no way you can describe this fabric stuff in a generic way in
the device tree. Just hardcode it in your platform support code; if
the platform code supports several variant boards, _it_ can probe that
from the device tree (in whatever way works for that platform).
Segher
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