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SubjectRe: [PATCH v2 3/4] powerpc: wii.dts: Expose the OTP on this platform
On Thu, Jul 01, 2021 at 09:56:55PM +0200, Emmanuel Gil Peyrot wrote:
> On Sat, Jun 26, 2021 at 11:34:01PM +0000, Jonathan Neuschäfer wrote:
> > On Wed, May 19, 2021 at 11:50:43AM +0200, Emmanuel Gil Peyrot wrote:
[...]
> > > + otp@d8001ec {
> > > + compatible = "nintendo,hollywood-otp";
> > > + reg = <0x0d8001ec 0x8>;
> >
> > The OTP registers overlap with the previous node, control@d800100.
> > Not sure what's the best way to structure the devicetree in this case,
> > maybe something roughly like the following (untested, unverified):
> [snip]
>
> I couldn’t get this to work, but additionally it looks like it should
> start 0x100 earlier and contain pic1@d800030 and gpio@d8000c0, given
> https://wiibrew.org/wiki/Hardware/Hollywood_Registers
>
> Would it make sense, for the time being, to reduce the size of this
> control@d800100 device to the single register currently being used by
> arch/powerpc/platforms/embedded6xx/wii.c (0xd800194, used to reboot the
> system) and leave the refactor of restart + OTP + PIC + GPIO for a
> future series?

Makes sense to me!

Jonathan
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