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[v3,3/5] powerpc: wii.dts: Reduce the size of the control area

Message ID 20210701225743.14631-4-linkmauve@linkmauve.fr (mailing list archive)
State Superseded
Headers show
Series [v3,1/5] nvmem: nintendo-otp: Add new driver for the Wii and Wii U OTP | expand
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Context Check Description
snowpatch_ozlabs/apply_patch success Successfully applied on branch powerpc/merge (e289c2e239c638cab7e71143e0a65c7c4a057ad7)
snowpatch_ozlabs/checkpatch success total: 0 errors, 0 warnings, 0 checks, 14 lines checked
snowpatch_ozlabs/needsstable success Patch has no Fixes tags

Commit Message

Emmanuel Gil Peyrot July 1, 2021, 10:57 p.m. UTC
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>
---
 arch/powerpc/boot/dts/wii.dts | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/arch/powerpc/boot/dts/wii.dts b/arch/powerpc/boot/dts/wii.dts
index aaa381da1906..c5fb54f8cc02 100644
--- a/arch/powerpc/boot/dts/wii.dts
+++ b/arch/powerpc/boot/dts/wii.dts
@@ -216,7 +216,13 @@  AVE: audio-video-encoder@70 {
 
 		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 {