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-rw-r--r--SOURCES/arm-dts-rpi-4-disable-wifi-frequencies.patch37
1 files changed, 37 insertions, 0 deletions
diff --git a/SOURCES/arm-dts-rpi-4-disable-wifi-frequencies.patch b/SOURCES/arm-dts-rpi-4-disable-wifi-frequencies.patch
new file mode 100644
index 0000000..fc16393
--- /dev/null
+++ b/SOURCES/arm-dts-rpi-4-disable-wifi-frequencies.patch
@@ -0,0 +1,37 @@
+From 358afb8b746d4a7ebaeeeaab7a1523895a8572c2 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Thu, 29 Oct 2020 14:40:18 +0100
+Subject: ARM: dts: rpi-4: disable wifi frequencies
+
+The RPi4 WiFi chip and HDMI outputs have some frequency overlap with
+crosstalk around 2.4GHz. Let's mark it as such so we can use some evasive
+maneuvers.
+
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
+Link: https://lore.kernel.org/r/20201029134018.1948636-3-maxime@cerno.tech
+---
+ arch/arm/boot/dts/bcm2711-rpi-4-b.dts | 2 ++
+ 1 file changed, 2 insertions(+)
+
+diff --git a/arch/arm/boot/dts/bcm2711-rpi-4-b.dts b/arch/arm/boot/dts/bcm2711-rpi-4-b.dts
+index 09a1182c29363..403bacf986ebb 100644
+--- a/arch/arm/boot/dts/bcm2711-rpi-4-b.dts
++++ b/arch/arm/boot/dts/bcm2711-rpi-4-b.dts
+@@ -181,12 +181,14 @@
+ &hdmi0 {
+ clocks = <&firmware_clocks 13>, <&firmware_clocks 14>, <&dvp 0>, <&clk_27MHz>;
+ clock-names = "hdmi", "bvb", "audio", "cec";
++ wifi-2.4ghz-coexistence;
+ status = "okay";
+ };
+
+ &hdmi1 {
+ clocks = <&firmware_clocks 13>, <&firmware_clocks 14>, <&dvp 1>, <&clk_27MHz>;
+ clock-names = "hdmi", "bvb", "audio", "cec";
++ wifi-2.4ghz-coexistence;
+ status = "okay";
+ };
+
+--
+cgit 1.2.3-1.el7