Thread (20 messages) 20 messages, 3 authors, 2021-12-16

[PATCH v3 3/5] powerpc: wii.dts: Expose HW_SRNPROT on this platform

From: Emmanuel Gil Peyrot <hidden>
Date: 2021-12-15 18:02:43
Also in: linux-devicetree, linux-rtc, lkml
Subsystem: linux for powerpc (32-bit and 64-bit), the rest · Maintainers: Madhavan Srinivasan, Michael Ellerman, Linus Torvalds

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 <redacted>
---
 arch/powerpc/boot/dts/wii.dts | 5 +++++
 1 file changed, 5 insertions(+)
diff --git a/arch/powerpc/boot/dts/wii.dts b/arch/powerpc/boot/dts/wii.dts
index c5720fdd0686..34d9732d5910 100644
--- a/arch/powerpc/boot/dts/wii.dts
+++ b/arch/powerpc/boot/dts/wii.dts
@@ -175,6 +175,11 @@ PIC1: pic1@d800030 {
 			interrupts = <14>;
 		};
 
+		srnprot@d800060 {
+			compatible = "nintendo,hollywood-srnprot";
+			reg = <0x0d800060 0x4>;
+		};
+
 		GPIO: gpio@d8000c0 {
 			#gpio-cells = <2>;
 			compatible = "nintendo,hollywood-gpio";
-- 
2.34.1
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