This is a note to let you know that I've just added the patch titled
ARM: dts: arm: realview: Fix development chip ROM compatible value
to the 4.19-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
arm-dts-arm-realview-fix-development-chip-rom-compat.patch
and it can be found in the queue-4.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 8e630c7dd673b09debf845fdd9e33514fcccd9b4
Author: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
Date: Wed Aug 30 17:03:04 2023 +0200
ARM: dts: arm: realview: Fix development chip ROM compatible value
[ Upstream commit 3baa4c5143d65ebab2de0d99a395e5f4f1f46608 ]
When the development chip ROM was added, the "direct-mapped" compatible
value was already obsolete. In addition, the device node lacked the
accompanying "probe-type" property, causing the old physmap_of_core
driver to fall back to trying all available probe types.
Unfortunately this fallback was lost when the DT and pdata cases were
merged.
Fix this by using the modern "mtd-rom" compatible value instead.
Fixes: 5c3f5edbe0a1dff3 ("ARM: realview: add flash devices to the PB1176 DTS")
Fixes: 642b1e8dbed7bbbf ("mtd: maps: Merge physmap_of.c into physmap-core.c")
Signed-off-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/arch/arm/boot/dts/arm-realview-pb1176.dts b/arch/arm/boot/dts/arm-realview-pb1176.dts
index 83e0fbc4a1a10..350a5dbd36130 100644
--- a/arch/arm/boot/dts/arm-realview-pb1176.dts
+++ b/arch/arm/boot/dts/arm-realview-pb1176.dts
@@ -427,7 +427,7 @@ pb1176_serial3: serial@1010f000 {
/* Direct-mapped development chip ROM */
pb1176_rom@10200000 {
- compatible = "direct-mapped";
+ compatible = "mtd-rom";
reg = <0x10200000 0x4000>;
bank-width = <1>;
};
