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| author | Peter Robinson <pbrobinson@gmail.com> | 2021-02-02 16:23:36 +0000 |
|---|---|---|
| committer | Peter Robinson <pbrobinson@gmail.com> | 2021-02-02 16:25:14 +0000 |
| commit | 49bec538fa6ac4582668722fbcd4afca8dbaa27d (patch) | |
| tree | ac21374ad38a86905e789e37d65d9c7953dafbaf | |
| parent | 23142de6326f0cddffbd7096d01bd7edf8260ae3 (diff) | |
| download | kernel-49bec538fa6ac4582668722fbcd4afca8dbaa27d.tar.gz kernel-49bec538fa6ac4582668722fbcd4afca8dbaa27d.tar.xz kernel-49bec538fa6ac4582668722fbcd4afca8dbaa27d.zip | |
fix for rpi4 display interfering with certain 2.4ghz wifi freqencies
| -rw-r--r-- | arm-dts-rpi-4-disable-wifi-frequencies.patch | 37 | ||||
| -rw-r--r-- | kernel.spec | 3 |
2 files changed, 40 insertions, 0 deletions
diff --git a/arm-dts-rpi-4-disable-wifi-frequencies.patch b/arm-dts-rpi-4-disable-wifi-frequencies.patch new file mode 100644 index 000000000..fc163935f --- /dev/null +++ b/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 diff --git a/kernel.spec b/kernel.spec index 9b8ae6afa..797bbd993 100644 --- a/kernel.spec +++ b/kernel.spec @@ -849,6 +849,9 @@ Patch103: arm-pandaboard-fix-add-bluetooth.patch # Fix for USB on some newer RPi4 / firmware combinations Patch104: 0001-brcm-rpi4-fix-usb-numeration.patch +# RPi-4 and wifi issues +Patch105: arm-dts-rpi-4-disable-wifi-frequencies.patch + # Nouveau mDP detection fix Patch107: 0001-drm-nouveau-kms-handle-mDP-connectors.patch |