From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id C93D3F46452 for ; Mon, 16 Mar 2026 11:22:34 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 2FDCC10E3B9; Mon, 16 Mar 2026 11:22:34 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=bootlin.com header.i=@bootlin.com header.b="yQc/dk0+"; dkim-atps=neutral Received: from smtpout-02.galae.net (smtpout-02.galae.net [185.246.84.56]) by gabe.freedesktop.org (Postfix) with ESMTPS id B84DE10E3B9 for ; Mon, 16 Mar 2026 11:22:33 +0000 (UTC) Received: from smtpout-01.galae.net (smtpout-01.galae.net [212.83.139.233]) by smtpout-02.galae.net (Postfix) with ESMTPS id 7413D1A2DFB; Mon, 16 Mar 2026 11:22:32 +0000 (UTC) Received: from mail.galae.net (mail.galae.net [212.83.136.155]) by smtpout-01.galae.net (Postfix) with ESMTPS id 3C30A5FC4A; Mon, 16 Mar 2026 11:22:32 +0000 (UTC) Received: from [127.0.0.1] (localhost [127.0.0.1]) by localhost (Mailerdaemon) with ESMTPSA id 4286D10368682; Mon, 16 Mar 2026 12:22:23 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=dkim; t=1773660151; h=from:subject:date:message-id:to:cc:mime-version:content-type: content-transfer-encoding:in-reply-to:references; bh=Vq342JcV2FeiEZGDKh1ajgkGt8udEwhu3JEGM5ZjURY=; b=yQc/dk0+Fu7bj8MfrlBwp/h6g+7/hV5V3WXjYAWG03UjSveuXfsS8tABdGLhOQPc8ZX6Go vlty2OFtxCGIX12PpXxv5eZrDFKMJ7ImgfILM7HHfeXZxFPtzSuXE3CK3CzesgaHGS67PR aH71cQ/JHIK4N+6TzQRkoIBwpViQ9o8vxy+wKG8i1Mx0K5TJTH5AqF8JEX62bDl3u49JBO dne0FH1JNaCJ8mg8kmCQP4IWckTuf20v9ZhCoU2pMDp+xy9+GtVkypkdxbpgJ8sMpOzfGj H32RLx2aeURiL73s1r5auIw8l1pprDegurU3ynzLKHCFyebXKShKzUMLT3cKLg== Mime-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=UTF-8 Date: Mon, 16 Mar 2026 12:22:23 +0100 Message-Id: Subject: Re: [PATCH] drm/bridge: adv7511: Clear HPD IRQ before powering on device during resume() Cc: "Biju Das" , "Laurent Pinchart" , "Jonas Karlman" , "Jernej Skrabec" , "Dmitry Baryshkov" , "Tommaso Merciai" , "Andy Yan" , "Douglas Anderson" , "Jesse Van Gavere" , , , "Geert Uytterhoeven" , "Prabhakar Mahadev Lad" , To: "Biju" , "Andrzej Hajda" , "Neil Armstrong" , "Robert Foss" , "Maarten Lankhorst" , "Maxime Ripard" , "Thomas Zimmermann" , "David Airlie" , "Simona Vetter" From: "Luca Ceresoli" X-Mailer: aerc 0.20.1 References: <20251219104659.114032-1-biju.das.jz@bp.renesas.com> In-Reply-To: <20251219104659.114032-1-biju.das.jz@bp.renesas.com> X-Last-TLS-Session-Version: TLSv1.3 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" On Fri Dec 19, 2025 at 11:46 AM CET, Biju wrote: > From: Biju Das > > On RZ/G3E SMARC EVK using PSCI, s2ram powers down the SoC. Testing ADV753= 5 > 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 Reviewed-by: Luca Ceresoli -- Luca Ceresoli, Bootlin Embedded Linux and Kernel engineering https://bootlin.com