openwrt/target/linux/bcm27xx/patches-6.1/950-0803-overlays-audremap-Document-CM4-40-41-restriction.patch

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From 6f4106f7a7fdcbc03290008713915b4122988c90 Mon Sep 17 00:00:00 2001
From: James Hughes <JamesH65@users.noreply.github.com>
Date: Wed, 5 Jul 2023 15:43:30 +0100
Subject: [PATCH] overlays: audremap: Document CM4 40&41 restriction
Update audremap information to state pins 40,41 are not available on the CM4.
Signed-off-by: James Hughes (james.hughes@raspberrypi.com)
---
arch/arm/boot/dts/overlays/README | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/arch/arm/boot/dts/overlays/README
+++ b/arch/arm/boot/dts/overlays/README
@@ -703,7 +703,8 @@ Params: swap_lr Reverse
nothing on BCM2711 (default off)
pins_12_13 Select GPIOs 12 & 13 (default)
pins_18_19 Select GPIOs 18 & 19
- pins_40_41 Select GPIOs 40 & 41
+ pins_40_41 Select GPIOs 40 & 41 (not available on CM4, used
+ for other purposes)
pins_40_45 Select GPIOs 40 & 45 (don't use on BCM2711 - the
pins are on different controllers)