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powerpc: wii.dts: Expose HW_SRNPROT on this platform 

This Hollywood register isn’t properly understood, but can allow or
reject access to the SRAM, which we need to set for RTC usage if it
isn’t previously set correctly beforehand.

See https://wiibrew.org/wiki/Hardware/Hollywood_Registers#HW_SRNPROT

Signed-off-by: Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
Acked-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc)
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Link: https://lore.kernel.org/r/20211215175501.6761-4-linkmauve@linkmauve.fr
This commit is contained in:
Emmanuel Gil Peyrot 2021-12-15 18:54:59 +01:00 committed by Alexandre Belloni
parent 322539a014
commit 5479618e1e
1 changed files with 5 additions and 0 deletions
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5
arch/powerpc/boot/dts/wii.dts
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@ -168,6 +168,11 @@
interrupts = <14>;
};
srnprot@d800060 {
compatible = "nintendo,hollywood-srnprot";
reg = <0x0d800060 0x4>;
};
GPIO: gpio@d8000c0 {
#gpio-cells = <2>;
compatible = "nintendo,hollywood-gpio";