linux-kernel - Re: [PATCH] ASoC: codecs: wsa884x: allow sharing reset GPIO

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Message-ID: <3aa9e3a7-9417-44b4-87d8-fcf1a8b46daf@sirena.org.uk>
Date:   Wed, 18 Oct 2023 13:35:43 +0100
From:   Mark Brown <broonie@...nel.org>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Cc:     Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
        Banajit Goswami <bgoswami@...cinc.com>,
        Liam Girdwood <lgirdwood@...il.com>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>, alsa-devel@...a-project.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ASoC: codecs: wsa884x: allow sharing reset GPIO

On Wed, Oct 18, 2023 at 12:00:55PM +0200, Krzysztof Kozlowski wrote:
> On some boards with multiple WSA8840/WSA8845 speakers, the reset
> (shutdown) GPIO is shared between two speakers.  Request it as
> GPIOD_FLAGS_BIT_NONEXCLUSIVE to allow such configurations.

>  	wsa884x->sd_n = devm_gpiod_get_optional(dev, "powerdown",
> -						GPIOD_OUT_HIGH);
> +						GPIOD_FLAGS_BIT_NONEXCLUSIVE | GPIOD_OUT_HIGH);

How do the speakers coordinate?

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