mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-26 00:41:17 +00:00
48 lines
1.5 KiB
Diff
48 lines
1.5 KiB
Diff
|
From cc08810f89e52337a99cc6ae5f53f08588357c5f Mon Sep 17 00:00:00 2001
|
||
|
|
From: Phil Elwell <phil@raspberrypi.com>
|
||
|
|
Date: Tue, 19 Sep 2023 20:31:34 +0100
|
||
|
|
Subject: [PATCH] overlays: Add a sample hat_map
|
||
|
|
|
||
|
|
The HAT map is way of associating named overlays with HATs whose
|
||
|
|
EEPROMs were programmed with the contents of the overlay.
|
||
|
|
Unfortunately, change in the DT and kernel drivers has meant that some
|
||
|
|
of these embedded overlays no longer function, or even don't apply.
|
||
|
|
|
||
|
|
The HAT map is a mapping from HAT UUIDs to overlay names. If a HAT with
|
||
|
|
a listed UUID is detected, the embedded overlay is ignored and the
|
||
|
|
overlay named in the mapping is loaded in its place.
|
||
|
|
|
||
|
|
Signed-off-by: Phil Elwell <phil@raspberrypi.com>
|
||
|
|
---
|
||
|
|
arch/arm/boot/dts/overlays/Makefile | 2 +-
|
||
|
|
arch/arm/boot/dts/overlays/hat_map.dts | 13 +++++++++++++
|
||
|
|
2 files changed, 14 insertions(+), 1 deletion(-)
|
||
|
|
create mode 100644 arch/arm/boot/dts/overlays/hat_map.dts
|
||
|
|
|
||
|
|
--- a/arch/arm/boot/dts/overlays/Makefile
|
||
|
|
+++ b/arch/arm/boot/dts/overlays/Makefile
|
||
|
|
@@ -1,6 +1,6 @@
|
||
|
|
# Overlays for the Raspberry Pi platform
|
||
|
|
|
||
|
|
-dtb-$(CONFIG_ARCH_BCM2835) += overlay_map.dtb
|
||
|
|
+dtb-$(CONFIG_ARCH_BCM2835) += overlay_map.dtb hat_map.dtb
|
||
|
|
|
||
|
|
dtbo-$(CONFIG_ARCH_BCM2835) += \
|
||
|
|
act-led.dtbo \
|
||
|
|
--- /dev/null
|
||
|
|
+++ b/arch/arm/boot/dts/overlays/hat_map.dts
|
||
|
|
@@ -0,0 +1,13 @@
|
||
|
|
+/dts-v1/;
|
||
|
|
+
|
||
|
|
+/ {
|
||
|
|
+ iqaudio-pi-codecplus {
|
||
|
|
+ uuid = [ dc1c9594 c1ab 4c6c acda a88dc59a3c5b ];
|
||
|
|
+ overlay = "iqaudio-codec";
|
||
|
|
+ };
|
||
|
|
+
|
||
|
|
+ recalbox-rgbdual {
|
||
|
|
+ uuid = [ 1c955808 681f 4bbc a2ef b7ea47cd388e ];
|
||
|
|
+ overlay = "recalboxrgbdual";
|
||
|
|
+ };
|
||
|
|
+};
|