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, Tim Gover <tim.gover@raspberrypi.com>,
Dave Stevenson <dave.stevenson@raspberrypi.com>,
dri-devel@lists.freedesktop.org,
Nicolas Saenz Julienne <nsaenzjulienne@suse.de>,
bcm-kernel-feedback-list@broadcom.com,
linux-rpi-kernel@lists.infradead.org,
Phil Elwell <phil@raspberrypi.com>,
linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 1/3] dt-bindings: display: Add a property to deal with WiFi coexistence
Date: Thu, 29 Oct 2020 14:40:16 +0100 [thread overview]
Message-ID: <20201029134018.1948636-1-maxime@cerno.tech> (raw)
The RaspberryPi4 has both a WiFi chip and HDMI outputs capable of doing
4k. Unfortunately, the 1440p resolution at 60Hz has a TMDS rate on the
HDMI cable right in the middle of the first Wifi channel.
Add a property to our HDMI controller, that could be reused by other
similar HDMI controllers, to allow the OS to take whatever measure is
necessary to avoid that crosstalk.
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
---
Changes from v1:
- Renamed the property
- Split it into a separate patch
---
.../devicetree/bindings/display/brcm,bcm2711-hdmi.yaml | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/Documentation/devicetree/bindings/display/brcm,bcm2711-hdmi.yaml b/Documentation/devicetree/bindings/display/brcm,bcm2711-hdmi.yaml
index 03a76729d26c..7ce06f9f9f8e 100644
--- a/Documentation/devicetree/bindings/display/brcm,bcm2711-hdmi.yaml
+++ b/Documentation/devicetree/bindings/display/brcm,bcm2711-hdmi.yaml
@@ -76,6 +76,12 @@ properties:
resets:
maxItems: 1
+ wifi-2.4ghz-coexistence:
+ type: boolean
+ description: >
+ Should the pixel frequencies in the WiFi frequencies range be
+ avoided?
+
required:
- compatible
- reg
--
2.26.2
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next reply other threads:[~2020-10-29 13:41 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-29 13:40 Maxime Ripard [this message]
2020-10-29 13:40 ` [PATCH v2 2/3] drm/vc4: hdmi: Disable Wifi Frequencies Maxime Ripard
2020-11-19 9:20 ` Thomas Zimmermann
2020-11-19 14:50 ` Maxime Ripard
2020-10-29 13:40 ` [PATCH v2 3/3] ARM: dts: rpi-4: disable wifi frequencies Maxime Ripard
2020-11-20 16:45 ` Nicolas Saenz Julienne
2020-10-29 17:43 ` [PATCH v2 1/3] dt-bindings: display: Add a property to deal with WiFi coexistence Nicolas Saenz Julienne
2020-10-29 18:07 ` Maxime Ripard
2020-10-29 18:16 ` Nicolas Saenz Julienne
2020-11-04 21:40 ` Rob Herring
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