From: "Luca Ceresoli" <luca.ceresoli@bootlin.com>
To: "Biju" <biju.das.au@gmail.com>,
"Andrzej Hajda" <andrzej.hajda@intel.com>,
"Neil Armstrong" <neil.armstrong@linaro.org>,
"Robert Foss" <rfoss@kernel.org>,
"Maarten Lankhorst" <maarten.lankhorst@linux.intel.com>,
"Maxime Ripard" <mripard@kernel.org>,
"Thomas Zimmermann" <tzimmermann@suse.de>,
"David Airlie" <airlied@gmail.com>,
"Simona Vetter" <simona@ffwll.ch>
Cc: "Biju Das" <biju.das.jz@bp.renesas.com>,
"Laurent Pinchart" <Laurent.pinchart@ideasonboard.com>,
"Jonas Karlman" <jonas@kwiboo.se>,
"Jernej Skrabec" <jernej.skrabec@gmail.com>,
"Dmitry Baryshkov" <dmitry.baryshkov@oss.qualcomm.com>,
"Tommaso Merciai" <tommaso.merciai.xr@bp.renesas.com>,
"Andy Yan" <andy.yan@rock-chips.com>,
"Douglas Anderson" <dianders@chromium.org>,
"Jesse Van Gavere" <jesseevg@gmail.com>,
<dri-devel@lists.freedesktop.org>, <linux-kernel@vger.kernel.org>,
"Geert Uytterhoeven" <geert+renesas@glider.be>,
"Prabhakar Mahadev Lad" <prabhakar.mahadev-lad.rj@bp.renesas.com>,
<linux-renesas-soc@vger.kernel.org>
Subject: Re: [PATCH] drm/bridge: adv7511: Clear HPD IRQ before powering on device during resume()
Date: Mon, 16 Mar 2026 12:22:23 +0100 [thread overview]
Message-ID: <DH461P9VAQXP.19TV6E01YQMS9@bootlin.com> (raw)
In-Reply-To: <20251219104659.114032-1-biju.das.jz@bp.renesas.com>
On Fri Dec 19, 2025 at 11:46 AM CET, Biju wrote:
> From: Biju Das <biju.das.jz@bp.renesas.com>
>
> On RZ/G3E SMARC EVK using PSCI, s2ram powers down the SoC. Testing ADV7535
> IRQ configured as edge-triggered interrupt on RZ/G3E SMARC EVK shows that
> it is missing HPD IRQ during system resume, as the status change occurs
> before the IRQ/pincontrol resume. Once the status bit is set, there won't
> be any further IRQ unless the status bit is cleared.
>
> Clear any pending HPD IRQs before powering on the ADV7535 device to
> deliver HPD interrupts after resume().
>
> Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
--
Luca Ceresoli, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com
next prev parent reply other threads:[~2026-03-16 11:22 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-12-19 10:46 Biju
2026-01-12 8:15 ` Tommaso Merciai
2026-03-16 10:40 ` Biju Das
2026-03-16 11:22 ` Luca Ceresoli [this message]
2026-03-16 14:02 ` Laurent Pinchart
2026-03-16 17:59 ` Biju Das
2026-03-17 23:29 ` Laurent Pinchart
2026-03-18 6:57 ` Biju Das
2026-04-22 11:02 ` Biju Das
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