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powerpc: wii.dts: Reduce the size of the control area

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This is wrong, but needed in order to avoid overlapping ranges with the
OTP area added in the next commit.  A refactor of this part of the
device tree is needed: according to Wiibrew[1], this area starts at
0x0d800000 and spans 0x400 bytes (that is, 0x100 32-bit registers),
encompassing PIC and GPIO registers, amongst the ones already exposed in
this device tree, which should become children of the control@d800000
node.

[1] https://wiibrew.org/wiki/Hardware/Hollywood_Registers

Signed-off-by: Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20210801073822.12452-4-linkmauve@linkmauve.fr
This commit is contained in:
Emmanuel Gil Peyrot 2021-08-01 09:38:20 +02:00 • committed by Michael Ellerman
parent 1bce542500
commit b11748e693
1 changed files with 7 additions and 1 deletions
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8
arch/powerpc/boot/dts/wii.dts
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@ -216,7 +216,13 @@
control@d800100 {
compatible = "nintendo,hollywood-control";
reg = <0x0d800100 0x300>;
/*
* Both the address and length are wrong, according to
* Wiibrew this should be <0x0d800000 0x400>, but it
* requires refactoring the PIC1 and GPIO nodes before
* changing that.
*/
reg = <0x0d800100 0xa0>;
};
disk@d806000 {