* [PATCH 1/2] drm/vc4: hdmi: Disable Wifi Frequencies
@ 2020-09-25 13:07 Maxime Ripard
2020-09-25 13:07 ` [PATCH 2/2] ARM: dts: rpi-4: disable wifi frequencies Maxime Ripard
` (2 more replies)
0 siblings, 3 replies; 6+ messages in thread
From: Maxime Ripard @ 2020-09-25 13:07 UTC (permalink / raw)
To: Mark Rutland, Rob Herring, Frank Rowand, Daniel Vetter,
David Airlie, Maarten Lankhorst, Thomas Zimmermann,
Maxime Ripard, Eric Anholt
Cc: devicetree, Tim Gover, Dave Stevenson, dri-devel,
bcm-kernel-feedback-list, linux-rpi-kernel, Phil Elwell,
linux-arm-kernel
There's cross-talk on the RPi4 between the 2.4GHz channels used by the WiFi
chip and some resolutions, most notably 1440p at 60Hz.
In such a case, we can either reject entirely the mode, or lower slightly
the pixel frequency to remove the overlap. Let's go for the latter.
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
---
.../bindings/display/brcm,bcm2711-hdmi.yaml | 6 ++++++
drivers/gpu/drm/vc4/vc4_hdmi.c | 14 +++++++++++++-
drivers/gpu/drm/vc4/vc4_hdmi.h | 8 ++++++++
3 files changed, 27 insertions(+), 1 deletion(-)
diff --git a/Documentation/devicetree/bindings/display/brcm,bcm2711-hdmi.yaml b/Documentation/devicetree/bindings/display/brcm,bcm2711-hdmi.yaml
index 03a76729d26c..63e7fe999c0a 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
+ raspberrypi,disable-wifi-frequencies:
+ type: boolean
+ description: >
+ Should the pixel frequencies in the WiFi frequencies range be
+ avoided?
+
required:
- compatible
- reg
diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.c b/drivers/gpu/drm/vc4/vc4_hdmi.c
index acfb4e235214..74da7c00ecd0 100644
--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
+++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
@@ -877,13 +877,22 @@ static int vc4_hdmi_encoder_atomic_check(struct drm_encoder *encoder,
struct vc4_hdmi_connector_state *vc4_state = conn_state_to_vc4_hdmi_conn_state(conn_state);
struct drm_display_mode *mode = &crtc_state->adjusted_mode;
struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder);
- unsigned long long pixel_rate = mode->clock * 1000;
+ unsigned long long pixel_rate;
if (vc4_hdmi->variant->broken_odd_h_timings &&
((mode->hdisplay % 2) || (mode->hsync_start % 2) ||
(mode->hsync_end % 2) || (mode->htotal % 2)))
return -EINVAL;
+ /*
+ * The 1440p@60 pixel rate is in the same range than the WiFi
+ * channels. Slightly lower the frequency to bring it out of the
+ * WiFi range.
+ */
+ if (vc4_hdmi->disable_wifi_frequencies && mode->clock == 241500)
+ mode->clock = 238560;
+
+ pixel_rate = mode->clock * 1000;
if (mode->flags & DRM_MODE_FLAG_DBLCLK)
pixel_rate *= 2;
@@ -1837,6 +1846,9 @@ static int vc4_hdmi_bind(struct device *dev, struct device *master, void *data)
vc4_hdmi->hpd_active_low = hpd_gpio_flags & OF_GPIO_ACTIVE_LOW;
}
+ vc4_hdmi->disable_wifi_frequencies =
+ of_property_read_bool(dev->of_node, "raspberrypi,disable-wifi-frequencies");
+
pm_runtime_enable(dev);
drm_simple_encoder_init(drm, encoder, DRM_MODE_ENCODER_TMDS);
diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.h b/drivers/gpu/drm/vc4/vc4_hdmi.h
index 40e51ece8efe..6618ee758890 100644
--- a/drivers/gpu/drm/vc4/vc4_hdmi.h
+++ b/drivers/gpu/drm/vc4/vc4_hdmi.h
@@ -143,6 +143,14 @@ struct vc4_hdmi {
int hpd_gpio;
bool hpd_active_low;
+ /*
+ * On some systems (like the RPi4), some modes are in the same
+ * frequency range than the WiFi channels (1440p@60Hz for
+ * example). Should we take evasive actions because that system
+ * has a wifi adapter.
+ */
+ bool disable_wifi_frequencies;
+
struct cec_adapter *cec_adap;
struct cec_msg cec_rx_msg;
bool cec_tx_ok;
--
2.26.2
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 6+ messages in thread
* [PATCH 2/2] ARM: dts: rpi-4: disable wifi frequencies
2020-09-25 13:07 [PATCH 1/2] drm/vc4: hdmi: Disable Wifi Frequencies Maxime Ripard
@ 2020-09-25 13:07 ` Maxime Ripard
2020-09-28 9:02 ` [PATCH 1/2] drm/vc4: hdmi: Disable Wifi Frequencies Daniel Vetter
2020-09-29 19:00 ` Rob Herring
2 siblings, 0 replies; 6+ messages in thread
From: Maxime Ripard @ 2020-09-25 13:07 UTC (permalink / raw)
To: Mark Rutland, Rob Herring, Frank Rowand, Daniel Vetter,
David Airlie, Maarten Lankhorst, Thomas Zimmermann,
Maxime Ripard, Eric Anholt
Cc: devicetree, Tim Gover, Dave Stevenson, dri-devel,
bcm-kernel-feedback-list, linux-rpi-kernel, Phil Elwell,
linux-arm-kernel
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
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 6+ messages in thread
* Re: [PATCH 1/2] drm/vc4: hdmi: Disable Wifi Frequencies
2020-09-25 13:07 [PATCH 1/2] drm/vc4: hdmi: Disable Wifi Frequencies Maxime Ripard
2020-09-25 13:07 ` [PATCH 2/2] ARM: dts: rpi-4: disable wifi frequencies Maxime Ripard
@ 2020-09-28 9:02 ` Daniel Vetter
2020-09-30 13:03 ` Maxime Ripard
2020-09-29 19:00 ` Rob Herring
2 siblings, 1 reply; 6+ messages in thread
From: Daniel Vetter @ 2020-09-28 9:02 UTC (permalink / raw)
To: Maxime Ripard
Cc: Mark Rutland, devicetree, Tim Gover, Dave Stevenson,
David Airlie, Maarten Lankhorst, dri-devel, Eric Anholt,
Rob Herring, bcm-kernel-feedback-list, linux-rpi-kernel,
Thomas Zimmermann, Daniel Vetter, Frank Rowand, Phil Elwell,
Linux ARM
On Mon, Sep 28, 2020 at 9:06 AM Maxime Ripard <maxime@cerno.tech> wrote:
>
> There's cross-talk on the RPi4 between the 2.4GHz channels used by the WiFi
> chip and some resolutions, most notably 1440p at 60Hz.
>
> In such a case, we can either reject entirely the mode, or lower slightly
> the pixel frequency to remove the overlap. Let's go for the latter.
>
> Signed-off-by: Maxime Ripard <maxime@cerno.tech>
> ---
> .../bindings/display/brcm,bcm2711-hdmi.yaml | 6 ++++++
> drivers/gpu/drm/vc4/vc4_hdmi.c | 14 +++++++++++++-
> drivers/gpu/drm/vc4/vc4_hdmi.h | 8 ++++++++
> 3 files changed, 27 insertions(+), 1 deletion(-)
>
> diff --git a/Documentation/devicetree/bindings/display/brcm,bcm2711-hdmi.yaml b/Documentation/devicetree/bindings/display/brcm,bcm2711-hdmi.yaml
> index 03a76729d26c..63e7fe999c0a 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
>
> + raspberrypi,disable-wifi-frequencies:
> + type: boolean
> + description: >
> + Should the pixel frequencies in the WiFi frequencies range be
> + avoided?
> +
> required:
> - compatible
> - reg
> diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.c b/drivers/gpu/drm/vc4/vc4_hdmi.c
> index acfb4e235214..74da7c00ecd0 100644
> --- a/drivers/gpu/drm/vc4/vc4_hdmi.c
> +++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
> @@ -877,13 +877,22 @@ static int vc4_hdmi_encoder_atomic_check(struct drm_encoder *encoder,
> struct vc4_hdmi_connector_state *vc4_state = conn_state_to_vc4_hdmi_conn_state(conn_state);
> struct drm_display_mode *mode = &crtc_state->adjusted_mode;
> struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder);
> - unsigned long long pixel_rate = mode->clock * 1000;
> + unsigned long long pixel_rate;
>
> if (vc4_hdmi->variant->broken_odd_h_timings &&
> ((mode->hdisplay % 2) || (mode->hsync_start % 2) ||
> (mode->hsync_end % 2) || (mode->htotal % 2)))
> return -EINVAL;
>
> + /*
> + * The 1440p@60 pixel rate is in the same range than the WiFi
> + * channels. Slightly lower the frequency to bring it out of the
> + * WiFi range.
> + */
> + if (vc4_hdmi->disable_wifi_frequencies && mode->clock == 241500)
> + mode->clock = 238560;
Don't you want to map for a (narrow) range of frequencies here? Just
for that infamous 60p vs 59.99p thing and similar. And I think that
would still be in that band you want to avoid.
-Daniel
> +
> + pixel_rate = mode->clock * 1000;
> if (mode->flags & DRM_MODE_FLAG_DBLCLK)
> pixel_rate *= 2;
>
> @@ -1837,6 +1846,9 @@ static int vc4_hdmi_bind(struct device *dev, struct device *master, void *data)
> vc4_hdmi->hpd_active_low = hpd_gpio_flags & OF_GPIO_ACTIVE_LOW;
> }
>
> + vc4_hdmi->disable_wifi_frequencies =
> + of_property_read_bool(dev->of_node, "raspberrypi,disable-wifi-frequencies");
> +
> pm_runtime_enable(dev);
>
> drm_simple_encoder_init(drm, encoder, DRM_MODE_ENCODER_TMDS);
> diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.h b/drivers/gpu/drm/vc4/vc4_hdmi.h
> index 40e51ece8efe..6618ee758890 100644
> --- a/drivers/gpu/drm/vc4/vc4_hdmi.h
> +++ b/drivers/gpu/drm/vc4/vc4_hdmi.h
> @@ -143,6 +143,14 @@ struct vc4_hdmi {
> int hpd_gpio;
> bool hpd_active_low;
>
> + /*
> + * On some systems (like the RPi4), some modes are in the same
> + * frequency range than the WiFi channels (1440p@60Hz for
> + * example). Should we take evasive actions because that system
> + * has a wifi adapter.
> + */
> + bool disable_wifi_frequencies;
> +
> struct cec_adapter *cec_adap;
> struct cec_msg cec_rx_msg;
> bool cec_tx_ok;
> --
> 2.26.2
>
> _______________________________________________
> dri-devel mailing list
> dri-devel@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/dri-devel
--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH 1/2] drm/vc4: hdmi: Disable Wifi Frequencies
2020-09-25 13:07 [PATCH 1/2] drm/vc4: hdmi: Disable Wifi Frequencies Maxime Ripard
2020-09-25 13:07 ` [PATCH 2/2] ARM: dts: rpi-4: disable wifi frequencies Maxime Ripard
2020-09-28 9:02 ` [PATCH 1/2] drm/vc4: hdmi: Disable Wifi Frequencies Daniel Vetter
@ 2020-09-29 19:00 ` Rob Herring
2020-09-30 13:04 ` Maxime Ripard
2 siblings, 1 reply; 6+ messages in thread
From: Rob Herring @ 2020-09-29 19:00 UTC (permalink / raw)
To: Maxime Ripard
Cc: Mark Rutland, devicetree, Tim Gover, Dave Stevenson,
David Airlie, Maarten Lankhorst, dri-devel, Eric Anholt,
bcm-kernel-feedback-list, linux-rpi-kernel, Thomas Zimmermann,
Daniel Vetter, Frank Rowand, Phil Elwell, linux-arm-kernel
On Fri, Sep 25, 2020 at 03:07:43PM +0200, Maxime Ripard wrote:
> There's cross-talk on the RPi4 between the 2.4GHz channels used by the WiFi
> chip and some resolutions, most notably 1440p at 60Hz.
>
> In such a case, we can either reject entirely the mode, or lower slightly
> the pixel frequency to remove the overlap. Let's go for the latter.
>
> Signed-off-by: Maxime Ripard <maxime@cerno.tech>
> ---
> .../bindings/display/brcm,bcm2711-hdmi.yaml | 6 ++++++
> drivers/gpu/drm/vc4/vc4_hdmi.c | 14 +++++++++++++-
> drivers/gpu/drm/vc4/vc4_hdmi.h | 8 ++++++++
> 3 files changed, 27 insertions(+), 1 deletion(-)
>
> diff --git a/Documentation/devicetree/bindings/display/brcm,bcm2711-hdmi.yaml b/Documentation/devicetree/bindings/display/brcm,bcm2711-hdmi.yaml
> index 03a76729d26c..63e7fe999c0a 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
>
> + raspberrypi,disable-wifi-frequencies:
> + type: boolean
> + description: >
> + Should the pixel frequencies in the WiFi frequencies range be
> + avoided?
Based on googling the issue, perhaps should be a common property?
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH 1/2] drm/vc4: hdmi: Disable Wifi Frequencies
2020-09-28 9:02 ` [PATCH 1/2] drm/vc4: hdmi: Disable Wifi Frequencies Daniel Vetter
@ 2020-09-30 13:03 ` Maxime Ripard
0 siblings, 0 replies; 6+ messages in thread
From: Maxime Ripard @ 2020-09-30 13:03 UTC (permalink / raw)
To: Daniel Vetter
Cc: Mark Rutland, devicetree, Tim Gover, Dave Stevenson,
David Airlie, Maarten Lankhorst, dri-devel, Eric Anholt,
Rob Herring, bcm-kernel-feedback-list, linux-rpi-kernel,
Thomas Zimmermann, Daniel Vetter, Frank Rowand, Phil Elwell,
Linux ARM
[-- Attachment #1.1: Type: text/plain, Size: 3001 bytes --]
Hi Daniel,
On Mon, Sep 28, 2020 at 11:02:11AM +0200, Daniel Vetter wrote:
> On Mon, Sep 28, 2020 at 9:06 AM Maxime Ripard <maxime@cerno.tech> wrote:
> >
> > There's cross-talk on the RPi4 between the 2.4GHz channels used by the WiFi
> > chip and some resolutions, most notably 1440p at 60Hz.
> >
> > In such a case, we can either reject entirely the mode, or lower slightly
> > the pixel frequency to remove the overlap. Let's go for the latter.
> >
> > Signed-off-by: Maxime Ripard <maxime@cerno.tech>
> > ---
> > .../bindings/display/brcm,bcm2711-hdmi.yaml | 6 ++++++
> > drivers/gpu/drm/vc4/vc4_hdmi.c | 14 +++++++++++++-
> > drivers/gpu/drm/vc4/vc4_hdmi.h | 8 ++++++++
> > 3 files changed, 27 insertions(+), 1 deletion(-)
> >
> > diff --git a/Documentation/devicetree/bindings/display/brcm,bcm2711-hdmi.yaml b/Documentation/devicetree/bindings/display/brcm,bcm2711-hdmi.yaml
> > index 03a76729d26c..63e7fe999c0a 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
> >
> > + raspberrypi,disable-wifi-frequencies:
> > + type: boolean
> > + description: >
> > + Should the pixel frequencies in the WiFi frequencies range be
> > + avoided?
> > +
> > required:
> > - compatible
> > - reg
> > diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.c b/drivers/gpu/drm/vc4/vc4_hdmi.c
> > index acfb4e235214..74da7c00ecd0 100644
> > --- a/drivers/gpu/drm/vc4/vc4_hdmi.c
> > +++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
> > @@ -877,13 +877,22 @@ static int vc4_hdmi_encoder_atomic_check(struct drm_encoder *encoder,
> > struct vc4_hdmi_connector_state *vc4_state = conn_state_to_vc4_hdmi_conn_state(conn_state);
> > struct drm_display_mode *mode = &crtc_state->adjusted_mode;
> > struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder);
> > - unsigned long long pixel_rate = mode->clock * 1000;
> > + unsigned long long pixel_rate;
> >
> > if (vc4_hdmi->variant->broken_odd_h_timings &&
> > ((mode->hdisplay % 2) || (mode->hsync_start % 2) ||
> > (mode->hsync_end % 2) || (mode->htotal % 2)))
> > return -EINVAL;
> >
> > + /*
> > + * The 1440p@60 pixel rate is in the same range than the WiFi
> > + * channels. Slightly lower the frequency to bring it out of the
> > + * WiFi range.
> > + */
> > + if (vc4_hdmi->disable_wifi_frequencies && mode->clock == 241500)
> > + mode->clock = 238560;
>
> Don't you want to map for a (narrow) range of frequencies here? Just
> for that infamous 60p vs 59.99p thing and similar. And I think that
> would still be in that band you want to avoid.
Testing for a range seems better indeed, I'll send a new version
Thanks!
Maxime
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^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH 1/2] drm/vc4: hdmi: Disable Wifi Frequencies
2020-09-29 19:00 ` Rob Herring
@ 2020-09-30 13:04 ` Maxime Ripard
0 siblings, 0 replies; 6+ messages in thread
From: Maxime Ripard @ 2020-09-30 13:04 UTC (permalink / raw)
To: Rob Herring
Cc: Mark Rutland, devicetree, Tim Gover, Dave Stevenson,
David Airlie, Maarten Lankhorst, dri-devel, Eric Anholt,
bcm-kernel-feedback-list, linux-rpi-kernel, Thomas Zimmermann,
Daniel Vetter, Frank Rowand, Phil Elwell, linux-arm-kernel
[-- Attachment #1.1: Type: text/plain, Size: 1666 bytes --]
Hi Rob,
On Tue, Sep 29, 2020 at 02:00:55PM -0500, Rob Herring wrote:
> On Fri, Sep 25, 2020 at 03:07:43PM +0200, Maxime Ripard wrote:
> > There's cross-talk on the RPi4 between the 2.4GHz channels used by the WiFi
> > chip and some resolutions, most notably 1440p at 60Hz.
> >
> > In such a case, we can either reject entirely the mode, or lower slightly
> > the pixel frequency to remove the overlap. Let's go for the latter.
> >
> > Signed-off-by: Maxime Ripard <maxime@cerno.tech>
> > ---
> > .../bindings/display/brcm,bcm2711-hdmi.yaml | 6 ++++++
> > drivers/gpu/drm/vc4/vc4_hdmi.c | 14 +++++++++++++-
> > drivers/gpu/drm/vc4/vc4_hdmi.h | 8 ++++++++
> > 3 files changed, 27 insertions(+), 1 deletion(-)
> >
> > diff --git a/Documentation/devicetree/bindings/display/brcm,bcm2711-hdmi.yaml b/Documentation/devicetree/bindings/display/brcm,bcm2711-hdmi.yaml
> > index 03a76729d26c..63e7fe999c0a 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
> >
> > + raspberrypi,disable-wifi-frequencies:
> > + type: boolean
> > + description: >
> > + Should the pixel frequencies in the WiFi frequencies range be
> > + avoided?
>
> Based on googling the issue, perhaps should be a common property?
This is a fairly generic issue indeed, but went for the most
non-intrusive way. Do you have a better idea of a generic name, or do
you just want me to drop the vendor prefix?
Maxime
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^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2020-10-05 15:15 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-09-25 13:07 [PATCH 1/2] drm/vc4: hdmi: Disable Wifi Frequencies Maxime Ripard
2020-09-25 13:07 ` [PATCH 2/2] ARM: dts: rpi-4: disable wifi frequencies Maxime Ripard
2020-09-28 9:02 ` [PATCH 1/2] drm/vc4: hdmi: Disable Wifi Frequencies Daniel Vetter
2020-09-30 13:03 ` Maxime Ripard
2020-09-29 19:00 ` Rob Herring
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