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[109.252.192.57]) by smtp.googlemail.com with ESMTPSA id s5sm909129lfc.150.2021.01.15.04.59.05 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 15 Jan 2021 04:59:06 -0800 (PST) Subject: Re: [PATCH v1 0/5] Clock and reset improvements for Tegra ALSA drivers To: Ben Dooks , Thierry Reding , Jonathan Hunter , Sameer Pujar , Peter Geis , Nicolas Chauvet , Takashi Iwai , Jaroslav Kysela Cc: alsa-devel@alsa-project.org, linux-tegra@vger.kernel.org, linux-kernel@vger.kernel.org References: <20210112125834.21545-1-digetx@gmail.com> From: Dmitry Osipenko Message-ID: Date: Fri, 15 Jan 2021 15:59:05 +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 Precedence: bulk List-ID: X-Mailing-List: linux-tegra@vger.kernel.org 15.01.2021 13:52, Ben Dooks пишет: > On 12/01/2021 12:58, Dmitry Osipenko wrote: >> This series improves the handling of clock and reset controls of >> NVIDA Tegra ALSA drivers. Tegra HDA and AHUB drivers aren't handling >> resets properly, which needs to be fixed in order to unblock other >> patches >> related to fixes on the reset controller driver since HDA/AHUB are bound >> to fail once reset controller driver will be corrected. In particular >> ALSA >> drivers are relying on implicit de-assertion of resets which is done >> by the >> tegra-clk driver. It's not the business of the clk driver to touch resets >> and we need to fix this because it breaks reset/clk programming sequences >> of other Tegra drivers. >> >> Dmitry Osipenko (5): >>    ALSA: hda/tegra: Use clk_bulk helpers >>    ALSA: hda/tegra: Reset hardware >>    ASoC: tegra: ahub: Use of_reset_control_array_get_exclusive() >>    ASoC: tegra: ahub: Use clk_bulk helpers >>    ASoC: tegra: ahub: Reset hardware properly >> >>   sound/pci/hda/hda_tegra.c      |  86 +++++++++------------------ >>   sound/soc/tegra/tegra30_ahub.c | 103 ++++++--------------------------- >>   sound/soc/tegra/tegra30_ahub.h |   6 +- >>   3 files changed, 49 insertions(+), 146 deletions(-) > > I wonder if this will help with the issues we saw when the tegra is > the i2s clock slave. Probably no, this series shouldn't fix any of the current problems. I will be surprised if it does.