linux-kernel - Re: [PATCH] ASoC: rockchip: add format and rate constraints on rk3399

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Message-ID: <20200630104047.GD5272@sirena.org.uk>
Date:   Tue, 30 Jun 2020 11:40:47 +0100
From:   Mark Brown <broonie@...nel.org>
To:     Yu-Hsuan Hsu <yuhsuan@...omium.org>
Cc:     linux-kernel@...r.kernel.org, Liam Girdwood <lgirdwood@...il.com>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>,
        Heiko Stuebner <heiko@...ech.de>, alsa-devel@...a-project.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-rockchip@...ts.infradead.org,
        Cheng-Yi Chiang <cychiang@...omium.org>,
        Tzung-Bi Shih <tzungbi@...omium.org>
Subject: Re: [PATCH] ASoC: rockchip: add format and rate constraints on rk3399

On Tue, Jun 30, 2020 at 05:16:15PM +0800, Yu-Hsuan Hsu wrote:
> S8 and S24 formats does not work on this machine driver so force to use
> S16_LE instead.

> In addition, add constraint to limit the max value of rate because the
> rate higher than 96000(172000, 192000) is not stable either.

What is the source of these restrictions - are they due to the component
devices?  If they are then the component devices ought to be setting
suitable constraints themselves.

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