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[109.252.192.57]) by smtp.googlemail.com with ESMTPSA id x2sm1928237ljd.63.2021.01.25.07.27.30 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 25 Jan 2021 07:27:31 -0800 (PST) Subject: Re: [PATCH v3 2/6] ALSA: hda/tegra: Reset hardware To: Takashi Iwai References: <20210120003154.26749-1-digetx@gmail.com> <20210120003154.26749-3-digetx@gmail.com> From: Dmitry Osipenko Message-ID: <7535a927-5246-4ccf-63fe-f8ded9eb6c52@gmail.com> Date: Mon, 25 Jan 2021 18:27:30 +0300 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.4.2 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Cc: alsa-devel@alsa-project.org, Nicolas Chauvet , linux-kernel@vger.kernel.org, Sameer Pujar , Takashi Iwai , Jonathan Hunter , Thierry Reding , Matt Merhar , Peter Geis , linux-tegra@vger.kernel.org X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: "Alsa-devel" 25.01.2021 18:18, Takashi Iwai пишет: > On Wed, 20 Jan 2021 01:31:50 +0100, > Dmitry Osipenko wrote: >> >> Reset hardware on RPM-resume in order to bring it into a predictable >> state. >> >> Tested-by: Peter Geis # Ouya T30 audio works >> Tested-by: Matt Merhar # Ouya T30 boot-tested >> Tested-by: Nicolas Chauvet # TK1 boot-tested >> Signed-off-by: Dmitry Osipenko > > Currently we have neither dependency nor reverse-selection of > CONFIG_RESET_CONTROLLER. It wouldn't be a problem for builds, but > you'll get a runtime error from > devm_reset_control_array_get_exclusive() always when > CONFIG_RESET_CONTROLLER=n. > > I guess it must be a corner case, but just to be sure. The CONFIG_RESET_CONTROLLER=y at least for ARM32 Tegra builds. https://elixir.bootlin.com/linux/v5.11-rc5/source/arch/arm/mach-tegra/Kconfig#L15 Not sure about ARM64.