From: Maxime Ripard <maxime@cerno.tech>
To: Mark Rutland <mark.rutland@arm.com>,
Rob Herring <robh+dt@kernel.org>,
Frank Rowand <frowand.list@gmail.com>,
Daniel Vetter <daniel.vetter@intel.com>,
David Airlie <airlied@linux.ie>,
Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
Thomas Zimmermann <tzimmermann@suse.de>,
Maxime Ripard <maxime@cerno.tech>, Eric Anholt <eric@anholt.net>
Cc: devicetree@vger.kernel.org, dri-devel@lists.freedesktop.org,
linux-rpi-kernel@lists.infradead.org,
bcm-kernel-feedback-list@broadcom.com,
linux-arm-kernel@lists.infradead.org,
Dave Stevenson <dave.stevenson@raspberrypi.com>,
Tim Gover <tim.gover@raspberrypi.com>,
Phil Elwell <phil@raspberrypi.com>
Subject: [PATCH 2/2] ARM: dts: rpi-4: disable wifi frequencies
Date: Fri, 25 Sep 2020 15:07:44 +0200 [thread overview]
Message-ID: <20200925130744.575725-2-maxime@cerno.tech> (raw)
In-Reply-To: <20200925130744.575725-1-maxime@cerno.tech>
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>
---
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 ca24c2c737ab..1b739c3a9a12 100644
--- a/arch/arm/boot/dts/bcm2711-rpi-4-b.dts
+++ b/arch/arm/boot/dts/bcm2711-rpi-4-b.dts
@@ -174,12 +174,14 @@ &gpio {
&hdmi0 {
clocks = <&firmware_clocks 13>, <&firmware_clocks 14>, <&dvp 0>, <&clk_27MHz>;
clock-names = "hdmi", "bvb", "audio", "cec";
+ raspberrypi,disable-wifi-frequencies;
status = "okay";
};
&hdmi1 {
clocks = <&firmware_clocks 13>, <&firmware_clocks 14>, <&dvp 1>, <&clk_27MHz>;
clock-names = "hdmi", "bvb", "audio", "cec";
+ raspberrypi,disable-wifi-frequencies;
status = "okay";
};
--
2.26.2
next prev parent reply other threads:[~2020-09-25 13:07 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-25 13:07 [PATCH 1/2] drm/vc4: hdmi: Disable Wifi Frequencies Maxime Ripard
2020-09-25 13:07 ` Maxime Ripard [this message]
2020-09-28 9:02 ` Daniel Vetter
2020-09-30 13:03 ` Maxime Ripard
2020-09-29 19:00 ` Rob Herring
2020-09-30 13:04 ` Maxime Ripard
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