From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-lf1-f54.google.com (mail-lf1-f54.google.com [209.85.167.54]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A45EB2C89 for ; Tue, 5 Oct 2021 22:43:23 +0000 (UTC) Received: by mail-lf1-f54.google.com with SMTP id n8so2197424lfk.6 for ; Tue, 05 Oct 2021 15:43:23 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=subject:from:to:cc:references:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=QG+ghKl7BYypZZjDut6dTGHyiOgVAsyM1BWUZUWMu5U=; b=Hd/Hgnl41abY2ut8awTV9Znfi0+mLbBx9rjGKMvBmv1GvhO4shIY8zKBANOfUfey6t f5Ia/T7DT6465kZqrrXQThtz+C/Dyv3WwmTVE2S1/knhHJ2ZkcQGMJbpA7lJW8S92LV6 d4sMrDbdjRQ26EUeegNXhFT6soeFLf+BrXj5mPF3K+E6tl1/jGMbmKZnQ0VlaBRfoOWR LuKoByxkOGkGhSjkSGOlHwyrskSGBdkV8ouXlaDVeZDQXkFs5OsF+2lgPEibKvUXARwq QkljhBPkuFryLkM004napUFJxFdOqOTZNrXbWHEUeRQ3+onIjoSJKZ6XnhXG+LemKrOd A8Qw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:subject:from:to:cc:references:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=QG+ghKl7BYypZZjDut6dTGHyiOgVAsyM1BWUZUWMu5U=; b=XEbKMwY5uWdpJoaQf5DIoxq+t6+zyE+UA7gVp+p3m2vFDfodw+vlw0WepiYKaSbQ7n 5qNeECGZynUtnqa/+SkK0WvHy5YeHjv/b1h4cz3ktw2KSfFK47ZfZb7usWgh57d0958V mFGg7m7Lu/I9yJPGCy3Tijsmq0CaQnvpCN5ROXnG5C7YaVyEonBDMvicov0G6zlNG9wD 3NCI+9QikIdriPQ12R3ID+xIR6qrVKGZqFmD/SfNGkSUbrT2cEEiCutP7CeYv+NFyYAA svUsaDvX9bjGnz4zv0kmt2+1VnqivEb1TA0V/FfSiOe4hFXfo+a4CCp1cJddNUmdMYVY GFMA== X-Gm-Message-State: AOAM530pLD4ULj5AQ/SGXuh6CKMq2pimTyxgiHTPjJXYf8xwSDV32yYb A5bfXh4dXi60hc6GQxXoKz0= X-Google-Smtp-Source: ABdhPJxfNs4Gfg7N3fvFBrC2l/U9ZmVjgRHnpJ3ajA7WdQF4gcWUZ5S7J4URL5OZbbHW8d5K2gyE2g== X-Received: by 2002:a2e:743:: with SMTP id i3mr24366437ljd.250.1633473801726; Tue, 05 Oct 2021 15:43:21 -0700 (PDT) Received: from [192.168.2.145] (79-139-163-57.dynamic.spd-mgts.ru. [79.139.163.57]) by smtp.googlemail.com with ESMTPSA id q30sm2086817lfb.108.2021.10.05.15.43.20 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 05 Oct 2021 15:43:21 -0700 (PDT) Subject: Re: [PATCH v13 06/35] clk: tegra: Support runtime PM and power domain From: Dmitry Osipenko To: Ulf Hansson Cc: Thierry Reding , Jonathan Hunter , Viresh Kumar , Stephen Boyd , Peter De Schrijver , Mikko Perttunen , Peter Chen , Lee Jones , =?UTF-8?Q?Uwe_Kleine-K=c3=b6nig?= , Nishanth Menon , Adrian Hunter , Michael Turquette , Linux Kernel Mailing List , linux-tegra , Linux PM , Linux USB List , linux-staging@lists.linux.dev, linux-pwm@vger.kernel.org, linux-mmc , dri-devel , DTML , linux-clk , Mark Brown , Vignesh Raghavendra , Richard Weinberger , Miquel Raynal , Lucas Stach , Stefan Agner , Mauro Carvalho Chehab , David Heidelberg References: <20210926224058.1252-1-digetx@gmail.com> <20210926224058.1252-7-digetx@gmail.com> <24101cd6-d3f5-1e74-db39-145ecd30418b@gmail.com> <4bdba8a2-4b9b-ed7d-e6ca-9218d8200a85@gmail.com> Message-ID: <74a47158-e2e4-5fd0-3f37-0b50d4ead4d9@gmail.com> Date: Wed, 6 Oct 2021 01:43:20 +0300 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.11.0 Precedence: bulk X-Mailing-List: linux-staging@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 In-Reply-To: <4bdba8a2-4b9b-ed7d-e6ca-9218d8200a85@gmail.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit 06.10.2021 01:19, Dmitry Osipenko пишет: ... > I reproduced the OFF problem by removing the clk prepare/unprepare from > the suspend/resume of the clk driver and making some extra changes to > clock tree topology and etc to trigger the problem on Nexus 7. > > tegra-pmc 7000e400.pmc: failed to turn off PM domain heg: -13 > > It happens from genpd_suspend_noirq() -> tegra_genpd_power_off() -> clk > -> GENPD -> I2C -> runtime-pm. > > -13 is EACCES, it comes from the runtime PM of I2C device. RPM is > prohibited/disabled during late (NOIRQ) suspend by the drivers core. My bad, I double-checked and it's not I2C RPM that is failing now, but the clock's RPM [1], which is also unavailable during NOIRQ. [1] https://elixir.free-electrons.com/linux/v5.15-rc4/source/drivers/clk/clk.c#L116 Previously it was I2C RPM that was failing in a similar way, but code changed a tad since that time.