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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 B8514CA0FED for ; Wed, 10 Sep 2025 19:33:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:In-Reply-To:References:To: From:Subject:Cc:Message-Id:Date:Content-Type:Mime-Version:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=9HNWtay6hchY2bwAXRQNT7mOaORvRgSuIBfEgTNIN2g=; b=NMjPO08DP9emqjJpVimEVxeTm/ DkazYV/4f6KtlBrz7rI41ZWoHUDJR4o84zPC2sPoemDlQCYejsZp5MChV4op24rH7ealxdLggrxLn h2AJP0kTxdLPOTYvxw5DMWucWbLI3ilsi6KAy/5vLi7loLxQdfaTp4BNB2ptRACUeqc6BF0sMgFKK p0/z4GIhp62lyQMKm8HTMd32gy5pFafc4F3zrup7yzfwuhPe/1aHuFnhrT+ZzqCrR16/7TNjxI/f5 e/MzkOshWOWy/7kli7GCkmAKiDqqGprCNygeWrLLulP8k42pWL/yyOuTsnPLplFdRtjlfxWjM+0mB vaSQxz5Q==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1uwQZW-0000000GK43-0HTE; Wed, 10 Sep 2025 19:33:38 +0000 Received: from out-172.mta1.migadu.com ([2001:41d0:203:375::ac]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1uwQZS-0000000GK0v-19l4 for linux-arm-kernel@lists.infradead.org; Wed, 10 Sep 2025 19:33:36 +0000 Mime-Version: 1.0 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=cknow.org; s=key1; t=1757532799; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=9HNWtay6hchY2bwAXRQNT7mOaORvRgSuIBfEgTNIN2g=; b=V5rUyYJ4lRHWcqYqYknEfuZsE8sAXDcMsy0NulpZl4lozkggwbyalaCf3CKTWt/14F9Wrq vPe6H8TlA1Iz51DpiISWBmrecDrZPRfFRAsGjjMs53Z6pWg1y60/dyVhP7CjkW4gTpoZTJ N6kiToz7MiFr/Z2nfaCDdwJBZcz2WAw/e6O82T2sfCbS5EbUTTDJbm6CO+et6zHtaKcUSJ JW+TzEFamJQxbjHAbj8T0hQ0Qaq8QgfR7X9SHBLEwn+ubmgXNopwEjUyq37RKVopNDyqQ3 K5kuOXq791foXKvLMSjc+cb/7EUa6IA0s+HTrbJ3Q+KtB9pROsni3TlwNds6aQ== Content-Type: multipart/signed; boundary=2d3af1ea26d984980a780563242cbe541c010a2489cc6084c981a9cec8dc; micalg=pgp-sha512; protocol="application/pgp-signature" Date: Wed, 10 Sep 2025 21:33:04 +0200 Message-Id: Cc: "Stephen Boyd" , "Rafael J . Wysocki" , "Heiko Stuebner" , "Sebastian Reichel" , "Sebin Francis" , "Bjorn Andersson" , "Abel Vesa" , "Peng Fan" , "Tomi Valkeinen" , "Johan Hovold" , "Maulik Shah" , "Michal Simek" , "Konrad Dybcio" , "Thierry Reding" , "Jonathan Hunter" , , , , "Christian Hewitt" Subject: Re: [PATCH 0/5] pmdomain: Restore behaviour for disabling unused PM domains X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. From: "Diederik de Haas" To: "Ulf Hansson" , "Geert Uytterhoeven" , "Nicolas Frattaroli" , "Saravana Kannan" , References: <20250909111130.132976-1-ulf.hansson@linaro.org> In-Reply-To: <20250909111130.132976-1-ulf.hansson@linaro.org> X-Migadu-Flow: FLOW_OUT X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250910_123335_091203_FE2C67F2 X-CRM114-Status: GOOD ( 16.89 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org --2d3af1ea26d984980a780563242cbe541c010a2489cc6084c981a9cec8dc Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=UTF-8 Hi, On Tue Sep 9, 2025 at 1:11 PM CEST, Ulf Hansson wrote: > Recent changes to genpd prevents those PM domains being powered-on during > initialization from being powered-off during the boot sequence. Based upo= n > whether CONFIG_PM_CONFIG_PM_GENERIC_DOMAINS_OF is set of not, genpd relie= s > on the sync_state mechanism or the genpd_power_off_unused() (which is a > late_initcall_sync), to understand when it's okay to allow these PM domai= ns > to be powered-off. > > This new behaviour in genpd has lead to problems on different platforms [= 1]. > > In this series, I am therefore suggesting to restore the behavior of > genpd_power_off_unused() along with introducing a new genpd config flag, > GENPD_FLAG_NO_STAY_ON, to allow genpd OF providers to opt-out from the ne= w > behaviour. Is it expected that I'm still seeing this on a Rock64 (rk3328), just like before [1]? [ 17.124202] rockchip-pm-domain ff100000.syscon:power-controller: sync_= state() pending due to ff300000.gpu [ 17.129799] rockchip-pm-domain ff100000.syscon:power-controller: sync_= state() pending due to ff350000.video-codec [ 17.140003] rockchip-pm-domain ff100000.syscon:power-controller: sync_= state() pending due to ff360000.video-codec This is with a 6.17-rc5 kernel with this patch set applied. And it also has this patch from Christian Hewitt added, now in v3: https://lore.kernel.org/linux-rockchip/20250906120810.1833016-1-christiansh= ewitt@gmail.com/ When I boot into a 6.17-rc5 kernel without any patches applied, I do get the 2 for ff350000.video-codec and ff360000.video-codec, but not the=20 ff300000.gpu one. Interestingly: ff300000.gpu -> power-domains =3D <&power RK3328_PD_GPU>; ff350000.video-codec -> power-domains =3D <&power RK3328_PD_VPU>; ff360000.video-codec -> power-domains =3D <&power RK3328_PD_VIDEO>; I would be surprised if that was a coincidence. Cheers, Diederik [1] https://lore.kernel.org/all/DCK0O99SYSCF.BMBAEUV24C1G@cknow.org/ > > Kind regards > Ulf Hansson > > [1] > https://lore.kernel.org/all/20250701114733.636510-1-ulf.hansson@linaro.or= g/ > https://lore.kernel.org/all/20250902-rk3576-lockup-regression-v1-1-c4a0c9= daeb00@collabora.com/ > > Ulf Hansson (5): > pmdomain: core: Restore behaviour for disabling unused PM domains > pmdomain: rockchip: Fix regulator dependency with > GENPD_FLAG_NO_STAY_ON > pmdomain: renesas: rcar-sysc: Don't keep unused PM domains powered-on > pmdomain: renesas: rcar-gen4-sysc: Don't keep unused PM domains > powered-on > pmdomain: renesas: rmobile-sysc: Don't keep unused PM domains > powered-on > > drivers/pmdomain/core.c | 20 ++++++++++++++------ > drivers/pmdomain/renesas/rcar-gen4-sysc.c | 1 + > drivers/pmdomain/renesas/rcar-sysc.c | 1 + > drivers/pmdomain/renesas/rmobile-sysc.c | 3 ++- > drivers/pmdomain/rockchip/pm-domains.c | 2 +- > include/linux/pm_domain.h | 7 +++++++ > 6 files changed, 26 insertions(+), 8 deletions(-) --2d3af1ea26d984980a780563242cbe541c010a2489cc6084c981a9cec8dc Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQT1sUPBYsyGmi4usy/XblvOeH7bbgUCaMHSdwAKCRDXblvOeH7b buGpAQDE9QMZtO9TtjXeo5Opuobk+4Tyg/Qx3IH3Sx8Fy3tJrAEAySejAaTzvvJT jQfSiiJtxvC1FQ2UwrgFl3g6A6Q7fgo= =+pr9 -----END PGP SIGNATURE----- --2d3af1ea26d984980a780563242cbe541c010a2489cc6084c981a9cec8dc--