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From: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
To: "Maíra Canal" <mcanal@igalia.com>,
	"Maxime Ripard" <mripard@kernel.org>,
	"Dave Stevenson" <dave.stevenson@raspberrypi.com>,
	"Raspberry Pi Kernel Maintenance" <kernel-list@raspberrypi.com>,
	"Maarten Lankhorst" <maarten.lankhorst@linux.intel.com>,
	"Thomas Zimmermann" <tzimmermann@suse.de>,
	"David Airlie" <airlied@gmail.com>,
	"Simona Vetter" <simona@ffwll.ch>
Cc: kernel@collabora.com, dri-devel@lists.freedesktop.org,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH v3 6/9] drm/vc4: hdmi: Convert to common HDMI 2.0 scrambling infrastructure
Date: Mon, 9 Nov 2026 14:18:19 +0200	[thread overview]
Message-ID: <280e4024-f1b1-47d0-980c-4d6f067e33d4@collabora.com> (raw)
In-Reply-To: <e532cc6a-21d0-4021-9854-08963331223e@igalia.com>

Hi Maíra,

On 11/9/26 1:53 PM, Maíra Canal wrote:
> Hi Cristian,
> 
> On 04/11/26 17:08, Cristian Ciocaltea wrote:
>> On 10/28/26 11:44 PM, Cristian Ciocaltea wrote:
>>> Hi Maíra,
>>>
>>> On 10/27/26 3:35 PM, Maíra Canal wrote:
>>>> Hi Cristian,
>>>>
>>>> On 13/10/26 22:03, Cristian Ciocaltea wrote:
>>>>> Replace driver local scrambling logic with the newly introduced common
>>>>> HDMI 2.0 scrambling support:
>>>>>
>>>>> - Advertise source-side scrambling capability by setting supported HDMI
>>>>>     version based on the variant's max_pixel_clock.
>>>>>
>>>>> - Provide minimal .scrambler_{enable,disable} connector callbacks that
>>>>>     only toggle the VC5 HDMI_SCRAMBLER_CTL register, while delegating
>>>>>     sink-side SCDC programming and periodic status monitoring to
>>>>>     drm_connector_hdmi_{enable,disable}_scrambling().
>>>>>
>>>>> - Drop vc4_hdmi_reset_link() and vc4_hdmi_handle_hotplug(), switching
>>>>>     the .detect_ctx() path to drm_atomic_helper_connector_hdmi_hotplug()
>>>>>     which internally calls drm_connector_hdmi_sync_scdc() to trigger a
>>>>>     CRTC reset on reconnection.
>>>>>
>>>>> - Drop the local scrambling_work delayed workqueue and scdc_enabled
>>>>>     flag, now tracked by the common drm_connector_hdmi layer, as well as
>>>>>     the now unused output_{bpc,color_format} driver data members.
>>
>> [...]
>>
>>> I'm going to test both fixes and send them out as a separate series, so we're
>>> not blocking on it.
>>
>> I submitted the fixes earlier today:
>>
>> https://lore.kernel.org/all/20261104-hdmi-scdc-scramb-fixes-v1-0-16a9bb3d64a6@collabora.com/
>>
>> I'm waiting for Lucas' scrambling patches to land in drm-misc-next so that I can
>> rebase this series and send v4.
>>
> 
> I believe Lucas' patches landed today in drm-misc-next.

Indeed, they weren't there when I checked earlier today, so thanks for the quick
notice.  I'll prepare the next revision.

Kind regards,
Cristian

  reply	other threads:[~2026-11-09 12:18 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-10-14  1:03 [PATCH v3 0/9] " Cristian Ciocaltea
2026-10-14  1:03 ` [PATCH v3 1/9] drm/vc4: hdmi: Use common TMDS char rate constants Cristian Ciocaltea
2026-10-14  1:03 ` [PATCH v3 2/9] drm/vc4: hdmi: Switch to drm_hdmi_mode_needs_scrambling() Cristian Ciocaltea
2026-10-14  1:03 ` [PATCH v3 3/9] drm/vc4: hdmi: Switch to .force_ctx() connector helper Cristian Ciocaltea
2026-10-14  1:03 ` [PATCH v3 4/9] drm/vc4: hdmi: Propagate -EDEADLK to the top level Cristian Ciocaltea
2026-10-14  1:03 ` [PATCH v3 5/9] drm/vc4: hdmi: Convert to drmm_connector_hdmi_init() Cristian Ciocaltea
2026-10-14  1:03 ` [PATCH v3 6/9] drm/vc4: hdmi: Convert to common HDMI 2.0 scrambling infrastructure Cristian Ciocaltea
2026-10-27 13:35   ` Maíra Canal
2026-10-28 21:44     ` Cristian Ciocaltea
2026-11-04 20:08       ` Cristian Ciocaltea
2026-11-09 11:53         ` Maíra Canal
2026-11-09 12:18           ` Cristian Ciocaltea [this message]
2026-10-14  1:03 ` [PATCH v3 7/9] drm/vc4: hdmi: Clamp CEC clock divider to its register field width Cristian Ciocaltea
2026-10-27 17:50   ` Dave Stevenson
2026-10-14  1:03 ` [PATCH v3 8/9] drm/vc4: hdmi: Bump BCM2835 max pixel clock to 165 MHz Cristian Ciocaltea
2026-10-27 17:51   ` Dave Stevenson
2026-10-14  1:03 ` [PATCH v3 9/9] drm/vc4: hdmi: Defer pixel clock validation to HDMI helpers Cristian Ciocaltea
2026-10-27  1:49 ` [PATCH v3 0/9] drm/vc4: hdmi: Convert to common HDMI 2.0 scrambling infrastructure Cristian Ciocaltea

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