From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 94D5EC636CC for ; Thu, 16 Feb 2023 10:04:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229644AbjBPKEn (ORCPT ); Thu, 16 Feb 2023 05:04:43 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44534 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229506AbjBPKEm (ORCPT ); Thu, 16 Feb 2023 05:04:42 -0500 Received: from mail-ed1-x533.google.com (mail-ed1-x533.google.com [IPv6:2a00:1450:4864:20::533]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 915A34DBFD for ; Thu, 16 Feb 2023 02:04:37 -0800 (PST) Received: by mail-ed1-x533.google.com with SMTP id cq19so2038725edb.5 for ; Thu, 16 Feb 2023 02:04:37 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=content-transfer-encoding:in-reply-to:from:references:cc:to :content-language:subject:user-agent:mime-version:date:message-id :from:to:cc:subject:date:message-id:reply-to; bh=uHOyQ5lmh44/x0N5o9EsWAl8D2lj1V8oYJTQzd4/iwg=; b=bjZQpJ3lzdwQ8hGv3TiVKeTU35vniZY/thIN9btZzz90XUJOLhcN9Z7phrwR7ME7jb XNm/51PJRU2HHchyrEc8hwF7cdzv7z4r+93iuikWUBkyxjgFKu3gxT9bjSmgPNT4Pl6d Bv2Ws/i4ScQ9647GxmC2sxRX1idbw5LtIJ9cdtmJnoyNduPYEGa5xPI2josYcuT5Fllh lsssLoSR0N8rc0QYXHSOHtTtcmeY6toL74u5lem43ZI+jAa7IJua79bHUW3TVpdCaoxt wQDDndTj0CAlUME4H68ScsnMzc8nPyAgBhr3Y1qJS979xJeDTQM/S46vbI9pL4tjg+C4 q35Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:in-reply-to:from:references:cc:to :content-language:subject:user-agent:mime-version:date:message-id :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=uHOyQ5lmh44/x0N5o9EsWAl8D2lj1V8oYJTQzd4/iwg=; b=X7qYZKLlHhU+UC6r70LI4WOpD9RpHgaZ6NEVOfmH7nYbN1jSsWYWi/PIZ54lbWdrMc s5T37eWLok/UrRpCWRfRt9bNZszALLP+5X/FbtlrZDS1BdhMJmCWnecZNiLkWDu3IxRr 98H0/s9DKv0H7F5sORXLghh6WgCEXmTDI3j3r2kDQCo4ALL7kG7IXaj5jCukOkl0V9qD g3Yvz6UcmpTL5RxGLyhh8YRg8O3DJqOLyE+zAuB043NDzxVvPE3eAI0gm5wxa7qTthXZ vCoaf5Aot0qRyRmqpSlLoAH8Ugadaq4CirgIaZ1pQHW/HwORjlsaQ/U2woQzzzuh2u5v YKqw== X-Gm-Message-State: AO0yUKU3Y66RzhhCpoW6zYWgXUQfWZEamdpY0iWzNO1fmrLrg2eFiSAC +ozL1sfbfAeKo+1wXsZ/f+pUfA== X-Google-Smtp-Source: AK7set9uWaBpaH1PbK5+K7zWxGk9xtocPZW9k0aRimgCx3zjxnmc6I9YqaLLs+v34zBVzX/5pzScEg== X-Received: by 2002:aa7:d28b:0:b0:4a0:e31a:434 with SMTP id w11-20020aa7d28b000000b004a0e31a0434mr5546917edq.27.1676541876140; Thu, 16 Feb 2023 02:04:36 -0800 (PST) Received: from [192.168.1.109] ([178.197.216.144]) by smtp.gmail.com with ESMTPSA id i5-20020a50c3c5000000b004aad8d2158dsm579668edf.66.2023.02.16.02.04.34 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 16 Feb 2023 02:04:35 -0800 (PST) Message-ID: <485d74fe-bfb5-c55e-724f-304476624abd@linaro.org> Date: Thu, 16 Feb 2023 11:04:33 +0100 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.7.1 Subject: Re: [PATCH 2/3] ASoC: dt-bindings: sama7g5-pdmc: add microchip,startup-delay-us binding Content-Language: en-US To: Claudiu Beznea , lgirdwood@gmail.com, broonie@kernel.org, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, lars@metafoo.de, perex@perex.cz, tiwai@suse.com, nicolas.ferre@microchip.com, alexandre.belloni@bootlin.com Cc: alsa-devel@alsa-project.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org References: <20230214161435.1088246-1-claudiu.beznea@microchip.com> <20230214161435.1088246-3-claudiu.beznea@microchip.com> From: Krzysztof Kozlowski In-Reply-To: <20230214161435.1088246-3-claudiu.beznea@microchip.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org On 14/02/2023 17:14, Claudiu Beznea wrote: > Add microchip,startup-delay-us binding to let PDMC users to specify > startup delay. > > Signed-off-by: Claudiu Beznea > --- > .../devicetree/bindings/sound/microchip,sama7g5-pdmc.yaml | 6 ++++++ > 1 file changed, 6 insertions(+) > > diff --git a/Documentation/devicetree/bindings/sound/microchip,sama7g5-pdmc.yaml b/Documentation/devicetree/bindings/sound/microchip,sama7g5-pdmc.yaml > index c4cf1e5ab84b..9b40268537cb 100644 > --- a/Documentation/devicetree/bindings/sound/microchip,sama7g5-pdmc.yaml > +++ b/Documentation/devicetree/bindings/sound/microchip,sama7g5-pdmc.yaml > @@ -67,6 +67,12 @@ properties: > maxItems: 4 > uniqueItems: true > > + microchip,startup-delay-us: > + description: | > + Specifies the delay in microseconds that needs to be applied after > + enabling the PDMC microphones to avoid unwanted noise due to microphones > + not being ready. Is this some hardware delay? Or OS? If OS, why Linux specific delay is put into DT? Best regards, Krzysztof