linux-kernel - Re: [PATCH v3 0/6] Clock and reset improvements for Tegra ALSA drivers

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Date:   Mon, 25 Jan 2021 16:18:33 +0100
From:   Takashi Iwai <tiwai@...e.de>
To:     Mark Brown <broonie@...nel.org>
Cc:     Dmitry Osipenko <digetx@...il.com>,
        Thierry Reding <thierry.reding@...il.com>,
        Jonathan Hunter <jonathanh@...dia.com>,
        Sameer Pujar <spujar@...dia.com>,
        Peter Geis <pgwipeout@...il.com>,
        Nicolas Chauvet <kwizart@...il.com>,
        Takashi Iwai <tiwai@...e.com>,
        Matt Merhar <mattmerhar@...tonmail.com>,
        Jaroslav Kysela <perex@...ex.cz>, alsa-devel@...a-project.org,
        linux-tegra@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 0/6] Clock and reset improvements for Tegra ALSA drivers

On Wed, 20 Jan 2021 01:31:48 +0100,
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 of 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.
> 
> Changelog:
> 
> v3: - Reworked "hda/tegra: Reset hardware" and "ahub: Reset hardware properly"
>       patches, they now use usleep + reset_deassert() instead of reset_reset().
>       Suggested by Thierry Reding.
> 
>     - Added new patch "hda/tegra: Remove unnecessary null-check from
>       hda_tegra_runtime_resume()". Suggested by Thierry Reding.
> 
>     - Replaced "ahub: Reset hardware properly" patch with "ahub: Add missing
>       resets". Suggested by Thierry Reding.
> 
>     - Slightly improved commit messages.
> 
>     - Added acks from Thierry Reding.
> 
> v2: - Added regcache_sync() to the "ahub: Reset hardware properly" patch,
>       which was missed by accident in v1.
> 
>     - Corrected typo in the format of the error message in "ahub: Use
>       of_reset_control_array_get_exclusive()" patch by s/%p/%pe/.
> 
> Dmitry Osipenko (6):
>   ALSA: hda/tegra: Use clk_bulk helpers
>   ALSA: hda/tegra: Reset hardware
>   ALSA: hda/tegra: Remove unnecessary null-check from
>     hda_tegra_runtime_resume()
>   ASoC: tegra: ahub: Add missing resets
>   ASoC: tegra: ahub: Use clk_bulk helpers
>   ASoC: tegra: ahub: Reset hardware properly

Mark, a half of the series are for ASoC.  Would you take those three,
or take the full patches or let me merge through my tree?


thanks,

Takashi

> 
>  sound/pci/hda/hda_tegra.c      | 90 ++++++++++++----------------------
>  sound/soc/tegra/tegra30_ahub.c | 64 ++++++++++++++----------
>  sound/soc/tegra/tegra30_ahub.h |  5 +-
>  3 files changed, 72 insertions(+), 87 deletions(-)
> 
> -- 
> 2.29.2
>