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Date:   Wed, 2 Sep 2020 15:32:20 +0200
From:   Maxime Ripard <maxime@cerno.tech>
To:     Hoegeun Kwon <hoegeun.kwon@samsung.com>
Cc:     Nicolas Saenz Julienne <nsaenzjulienne@suse.de>,
        Eric Anholt <eric@anholt.net>, devicetree@vger.kernel.org,
        Tim Gover <tim.gover@raspberrypi.com>,
        Dave Stevenson <dave.stevenson@raspberrypi.com>,
        Stephen Boyd <sboyd@kernel.org>,
        Michael Turquette <mturquette@baylibre.com>,
        Kamal Dasu <kdasu.kdev@gmail.com>,
        linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org,
        linux-clk@vger.kernel.org, Rob Herring <robh+dt@kernel.org>,
        bcm-kernel-feedback-list@broadcom.com,
        linux-rpi-kernel@lists.infradead.org,
        Phil Elwell <phil@raspberrypi.com>,
        linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v4 00/78] drm/vc4: Support BCM2711 Display Pipeline
Message-ID: <20200902133220.avp6dhfv2fhpiyf3@gilmour.lan>
References: <CGME20200709070649epcas1p13664bacc66a0f73443bf4d3e8940f933@epcas1p1.samsung.com>
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Hi Hoegeun

On Fri, Aug 21, 2020 at 04:18:34PM +0900, Hoegeun Kwon wrote:
> Hi Maxime,
>=20
> Thank you for your version 4 patch.
> I tested all 78 patches based on the next-20200708.
>=20
>=20
> Dual HDMI opearation does not work normally.
> flip_done timed out occurs and doesn't work.
> Could you check please it.
>=20
> [=A0 105.694541] [drm:drm_atomic_helper_wait_for_dependencies] *ERROR*=20
> [CRTC:64:crtc-3] flip_done timed out
> [=A0 115.934994] [drm:drm_atomic_helper_wait_for_dependencies] *ERROR*=20
> [CONNECTOR:32:HDMI-A-1] flip_done timed out
> [=A0 126.174545] [drm:drm_atomic_helper_wait_for_dependencies] *ERROR*=20
> [PLANE:60:plane-3] flip_done timed out

Thanks for testing and reporting this. I've been looking into it, and it
seems that it's not just the dual output that's broken, but HDMI1
entirely (so even a single display connected to HDMI1 doesn't work).

Is it happening for you as well?

Maxime

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