linux-kernel - Re: [PATCH v1 3/5] ASoC: tegra: ahub: Use of_reset_control_array_get

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Message-ID: <YAG211gFXExjp7Zh@ulmo>
Date:   Fri, 15 Jan 2021 16:37:59 +0100
From:   Thierry Reding <thierry.reding@...il.com>
To:     Dmitry Osipenko <digetx@...il.com>
Cc:     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>,
        Jaroslav Kysela <perex@...ex.cz>, alsa-devel@...a-project.org,
        linux-tegra@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1 3/5] ASoC: tegra: ahub: Use
 of_reset_control_array_get_exclusive()

On Tue, Jan 12, 2021 at 03:58:32PM +0300, Dmitry Osipenko wrote:
> Some of resets are erroneously missed in the configlink_mods[], like APBIF
> for example. Use of_reset_control_array_get_exclusive() which requests all
> the resets. The problem was hidden by the clk driver which implicitly
> de-asserts the missing resets.
> 
> Tested-by: Peter Geis <pgwipeout@...il.com>
> Tested-by: Nicolas Chauvet <kwizart@...il.com>
> Signed-off-by: Dmitry Osipenko <digetx@...il.com>
> ---
>  sound/soc/tegra/tegra30_ahub.c | 66 +++++-----------------------------
>  sound/soc/tegra/tegra30_ahub.h |  1 -
>  2 files changed, 9 insertions(+), 58 deletions(-)

Doing it this way is slightly suboptimal because now we don't actually
have a way of checking that the DT has all the necessary resets listed.

Can we not just make the list complete instead to keep the checks in
place? That should be a much smaller patch, too.

Thierry

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