From patchwork Mon Sep 18 13:15:30 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: John Watts X-Patchwork-Id: 13389592 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 alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 85598CD37B0 for ; Mon, 18 Sep 2023 13:17:38 +0000 (UTC) Received: from alsa1.perex.cz (alsa1.perex.cz [207.180.221.201]) (using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by alsa0.perex.cz (Postfix) with ESMTPS id 31640820; Mon, 18 Sep 2023 15:16:46 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz 31640820 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1695043056; bh=klfA+DZqqBN28s60iEyp7/wdwACi9ioxehg+MyDdDvk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-Id: List-Archive:List-Help:List-Owner:List-Post:List-Subscribe: List-Unsubscribe:From; b=OUG4gZUMP+KI7b02nIEjNFiXem3kq7I7hcr9JinSi/H3uIJ0r3caXm08q9Liqk8NG w0vcoFZ1ZndXspAGuvQVzF4rxABfvNwh6GNtD39RHCzxznvuV4iGoRj+GBaPcNT6/m LWSJYBRcovKr4ysqshpSUVTVB67Lap7z92ei1ZMc= Received: by alsa1.perex.cz (Postfix, from userid 50401) id 56274F80570; Mon, 18 Sep 2023 15:16:00 +0200 (CEST) Received: from mailman-core.alsa-project.org (mailman-core.alsa-project.org [10.254.200.10]) by alsa1.perex.cz (Postfix) with ESMTP id 118B0F8055B; Mon, 18 Sep 2023 15:16:00 +0200 (CEST) Received: by alsa1.perex.cz (Postfix, from userid 50401) id 5B971F8055B; Mon, 18 Sep 2023 15:15:57 +0200 (CEST) Received: from out-219.mta1.migadu.com (out-219.mta1.migadu.com [IPv6:2001:41d0:203:375::db]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by alsa1.perex.cz (Postfix) with ESMTPS id 060CCF80125 for ; Mon, 18 Sep 2023 15:15:51 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz 060CCF80125 Authentication-Results: alsa1.perex.cz; dkim=pass (2048-bit key, unprotected) header.d=jookia.org header.i=@jookia.org header.a=rsa-sha256 header.s=key1 header.b=isHIvKmX X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=jookia.org; s=key1; t=1695042950; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=xSNguzTtIikVl+RQdSUYwmi0RN1Huyk35tspr09PREQ=; b=isHIvKmXlXetcHeWf7DjvK3hd0YtioC94nvej32bNq/CvGmTve1YeRzk+rYdpbOh0eQmpk 3aiceae+rP8+l/Bty+m+0HhdJ1aPNr9wTOaaXq8QcJU/1D3y62W4pOmNmmFobZ3fW+9BI5 IteLeq+6kc4S8MCQ1xLRVOVJdBKUGOEqHm/qlXmvM085CmOb7lyFmN67ZPTrwlR5rA92kH BLmKr17w/zrQraxWAHXbs6ZAPSqI1ztNaVsn6me2MSKb/5xeUJ8BB9L9M/UquqEbTNmhzf Y3xECSLmLS/OImXDAGxVOfMUi014+rkxkLAHyEw90TlaljKsCYCp6MqrfVh0fw== From: John Watts To: alsa-devel@alsa-project.org Cc: Liam Girdwood , Mark Brown , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Jaroslav Kysela , Takashi Iwai , Charles Keepax , John Watts , patches@opensource.cirrus.com, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v4 1/3] ASoC: wm8782: Constrain maximum audio rate at runtime Date: Mon, 18 Sep 2023 23:15:30 +1000 Message-ID: <20230918131532.2257615-2-contact@jookia.org> In-Reply-To: <20230918131532.2257615-1-contact@jookia.org> References: <20230918131532.2257615-1-contact@jookia.org> MIME-Version: 1.0 X-Migadu-Flow: FLOW_OUT Message-ID-Hash: FUIM4F7FMDE3LYQXUB6YGSOF5DPVITAB X-Message-ID-Hash: FUIM4F7FMDE3LYQXUB6YGSOF5DPVITAB X-MailFrom: contact@jookia.org X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; header-match-alsa-devel.alsa-project.org-0; header-match-alsa-devel.alsa-project.org-1; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header X-Mailman-Version: 3.3.8 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: The wm8782 supports up to 192kHz audio when pins are set correctly. Instead of hardcoding which rates are supported constrain them at runtime based on a max_rate variable. Signed-off-by: John Watts Acked-by: Charles Keepax --- sound/soc/codecs/wm8782.c | 42 ++++++++++++++++++++++++++++----------- 1 file changed, 30 insertions(+), 12 deletions(-) diff --git a/sound/soc/codecs/wm8782.c b/sound/soc/codecs/wm8782.c index 95ff4339d103..f3dc87b92b1e 100644 --- a/sound/soc/codecs/wm8782.c +++ b/sound/soc/codecs/wm8782.c @@ -23,6 +23,27 @@ #include #include +/* regulator power supply names */ +static const char *supply_names[] = { + "Vdda", /* analog supply, 2.7V - 3.6V */ + "Vdd", /* digital supply, 2.7V - 5.5V */ +}; + +struct wm8782_priv { + struct regulator_bulk_data supplies[ARRAY_SIZE(supply_names)]; + int max_rate; +}; + +static int wm8782_dai_startup(struct snd_pcm_substream *sub, struct snd_soc_dai *dai) +{ + struct snd_pcm_runtime *runtime = sub->runtime; + struct wm8782_priv *priv = + snd_soc_component_get_drvdata(dai->component); + + return snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_RATE, + 8000, priv->max_rate); +} + static const struct snd_soc_dapm_widget wm8782_dapm_widgets[] = { SND_SOC_DAPM_INPUT("AINL"), SND_SOC_DAPM_INPUT("AINR"), @@ -33,28 +54,22 @@ static const struct snd_soc_dapm_route wm8782_dapm_routes[] = { { "Capture", NULL, "AINR" }, }; +static const struct snd_soc_dai_ops wm8782_dai_ops = { + .startup = &wm8782_dai_startup, +}; + static struct snd_soc_dai_driver wm8782_dai = { .name = "wm8782", .capture = { .stream_name = "Capture", .channels_min = 2, .channels_max = 2, - /* For configurations with FSAMPEN=0 */ - .rates = SNDRV_PCM_RATE_8000_48000, + .rates = SNDRV_PCM_RATE_8000_192000, .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE, }, -}; - -/* regulator power supply names */ -static const char *supply_names[] = { - "Vdda", /* analog supply, 2.7V - 3.6V */ - "Vdd", /* digital supply, 2.7V - 5.5V */ -}; - -struct wm8782_priv { - struct regulator_bulk_data supplies[ARRAY_SIZE(supply_names)]; + .ops = &wm8782_dai_ops, }; static int wm8782_soc_probe(struct snd_soc_component *component) @@ -121,6 +136,9 @@ static int wm8782_probe(struct platform_device *pdev) if (ret < 0) return ret; + /* For configurations with FSAMPEN=0 */ + priv->max_rate = 48000; + return devm_snd_soc_register_component(&pdev->dev, &soc_component_dev_wm8782, &wm8782_dai, 1); } From patchwork Mon Sep 18 13:15:31 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: John Watts X-Patchwork-Id: 13389593 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 alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 20CDCC46CA1 for ; Mon, 18 Sep 2023 13:17:45 +0000 (UTC) Received: from alsa1.perex.cz (alsa1.perex.cz [207.180.221.201]) (using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by alsa0.perex.cz (Postfix) with ESMTPS id 789AC950; Mon, 18 Sep 2023 15:16:53 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz 789AC950 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1695043063; bh=7XrPk4/Rr3O98E0T14Rp4tJxqPu1Yz2IAx9g8cRYIQw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-Id: List-Archive:List-Help:List-Owner:List-Post:List-Subscribe: List-Unsubscribe:From; b=TxJB5lgafTVuAmk+rzxwyJOcuu7DaTbQjyRvbHBlz80zflv6Pi1cwuzJya/SVqeKG gex6iC+6eNasLnL/By9KNXjBtXqjchJS+RzhAezQoVcqN0Yy0tMV+qMsmuvO4w15Rq GETAdnuyng0+0VvpTajKGl82yTGTqGpyu02SN8RE= Received: by alsa1.perex.cz (Postfix, from userid 50401) id BD14DF80580; Mon, 18 Sep 2023 15:16:05 +0200 (CEST) Received: from mailman-core.alsa-project.org (mailman-core.alsa-project.org [10.254.200.10]) by alsa1.perex.cz (Postfix) with ESMTP id 6F00FF80578; Mon, 18 Sep 2023 15:16:05 +0200 (CEST) Received: by alsa1.perex.cz (Postfix, from userid 50401) id B6182F80578; Mon, 18 Sep 2023 15:16:02 +0200 (CEST) Received: from out-223.mta0.migadu.com (out-223.mta0.migadu.com [91.218.175.223]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by alsa1.perex.cz (Postfix) with ESMTPS id E8A78F80564 for ; Mon, 18 Sep 2023 15:15:59 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz E8A78F80564 Authentication-Results: alsa1.perex.cz; dkim=pass (2048-bit key, unprotected) header.d=jookia.org header.i=@jookia.org header.a=rsa-sha256 header.s=key1 header.b=SE9BSu6/ X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=jookia.org; s=key1; t=1695042958; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=4QFpVPz6Dj2StxlRB+kfzhXVotf0zGse0COR5Gm2ZtU=; b=SE9BSu6/4xhSdGqLkCq7BClR4+SWO4YbbsABZP/UR+5ItB9hbFerzMeBdcdLlSL7FLqy6x liihzn367XnuIFSbIjQ+oOgsAJeegWiY9/bhcfCTXR1tiPX2u7paDd5n7IQ90dFGt6/sQH 33T4dU66rpYhoSrt3ZzqUmZHgBNXakoZrCufRnUXs6h/1g8PhjOf4PqFqvDwiNptQlBP3X /s3H9GF/Ekhh26gNc2QNEh6qha+UXeVhzLoEge/WmokXZnt40vIpQi3rcyTxay8AfiYG0S VF0UMOlMDd1rrB+mmazdq7GIJ5RJ9q438Zz3KFGlt99GY/t+JVkZ0iEFW6HntQ== From: John Watts To: alsa-devel@alsa-project.org Cc: Liam Girdwood , Mark Brown , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Jaroslav Kysela , Takashi Iwai , Charles Keepax , John Watts , patches@opensource.cirrus.com, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v4 2/3] ASoC: wm8782: Use wlf,fsampen device tree property Date: Mon, 18 Sep 2023 23:15:31 +1000 Message-ID: <20230918131532.2257615-3-contact@jookia.org> In-Reply-To: <20230918131532.2257615-1-contact@jookia.org> References: <20230918131532.2257615-1-contact@jookia.org> MIME-Version: 1.0 X-Migadu-Flow: FLOW_OUT Message-ID-Hash: WEVP55JZR7A6XR4R7QI6GAK62TXUEBJL X-Message-ID-Hash: WEVP55JZR7A6XR4R7QI6GAK62TXUEBJL X-MailFrom: contact@jookia.org X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; header-match-alsa-devel.alsa-project.org-0; header-match-alsa-devel.alsa-project.org-1; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header X-Mailman-Version: 3.3.8 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: The wm8782 supports rates 96kHz and 192kHz as long as the hardware is configured properly. Allow this to be specified in the device tree. Signed-off-by: John Watts Acked-by: Charles Keepax --- sound/soc/codecs/wm8782.c | 25 ++++++++++++++++++++++--- 1 file changed, 22 insertions(+), 3 deletions(-) diff --git a/sound/soc/codecs/wm8782.c b/sound/soc/codecs/wm8782.c index f3dc87b92b1e..3a2acdfa9b85 100644 --- a/sound/soc/codecs/wm8782.c +++ b/sound/soc/codecs/wm8782.c @@ -119,8 +119,9 @@ static const struct snd_soc_component_driver soc_component_dev_wm8782 = { static int wm8782_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; + struct device_node *np = dev->of_node; struct wm8782_priv *priv; - int ret, i; + int ret, i, fsampen; priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); if (!priv) @@ -136,8 +137,26 @@ static int wm8782_probe(struct platform_device *pdev) if (ret < 0) return ret; - /* For configurations with FSAMPEN=0 */ - priv->max_rate = 48000; + // Assume lowest value by default to avoid inadvertent overclocking + fsampen = 0; + + if (np) + of_property_read_u32(np, "wlf,fsampen", &fsampen); + + switch (fsampen) { + case 0: + priv->max_rate = 48000; + break; + case 1: + priv->max_rate = 96000; + break; + case 2: + priv->max_rate = 192000; + break; + default: + dev_err(dev, "Invalid wlf,fsampen value"); + return -EINVAL; + } return devm_snd_soc_register_component(&pdev->dev, &soc_component_dev_wm8782, &wm8782_dai, 1); From patchwork Mon Sep 18 13:15:32 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: John Watts X-Patchwork-Id: 13389594 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 alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id BDEF4C46CA1 for ; Mon, 18 Sep 2023 13:18:05 +0000 (UTC) Received: from alsa1.perex.cz (alsa1.perex.cz [207.180.221.201]) (using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by alsa0.perex.cz (Postfix) with ESMTPS id 0292BBC0; Mon, 18 Sep 2023 15:17:14 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz 0292BBC0 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1695043084; bh=lFI2eSXDI/MauwP+d3JoGjHLWZPx6y0eM7DV/cuMMcY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-Id: List-Archive:List-Help:List-Owner:List-Post:List-Subscribe: List-Unsubscribe:From; b=k8OkgoClR3fpYrEuH+fHqMQ8dIuI+FrVTkVwDhR25ysO4+IAitk8uTNXKklgKXHB4 6k9qpdbmflej3KR23qGHhnln6U7CcRyDoCsSC6C8SUW22r6FgPsCxlwWdMWF9z9ozh i8/STNrOzeH5cqYZWbG7oWW07i3soxH6gdkVrvzc= Received: by alsa1.perex.cz (Postfix, from userid 50401) id 093DAF805A8; Mon, 18 Sep 2023 15:16:14 +0200 (CEST) Received: from mailman-core.alsa-project.org (mailman-core.alsa-project.org [10.254.200.10]) by alsa1.perex.cz (Postfix) with ESMTP id BC8C0F80587; Mon, 18 Sep 2023 15:16:14 +0200 (CEST) Received: by alsa1.perex.cz (Postfix, from userid 50401) id 2210EF80587; Mon, 18 Sep 2023 15:16:12 +0200 (CEST) Received: from out-222.mta1.migadu.com (out-222.mta1.migadu.com [95.215.58.222]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by alsa1.perex.cz (Postfix) with ESMTPS id 4BA38F80571 for ; Mon, 18 Sep 2023 15:16:07 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz 4BA38F80571 Authentication-Results: alsa1.perex.cz; dkim=pass (2048-bit key, unprotected) header.d=jookia.org header.i=@jookia.org header.a=rsa-sha256 header.s=key1 header.b=TfnB1Khl X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=jookia.org; s=key1; t=1695042967; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=f4JO3nPtbJqM3dkylLDmImTDJGUU/OSMwJOj0UlM/Ak=; b=TfnB1KhlXidh22YPceMlN18+XrH4ujdCm5j8lJg6uxN9ms0aAHROG1HXUcT4YkltlOJYLO 2w/YjChRnnByz+GDdIo2GwmjAWlDJQ9o/B9oH4KB4OfdZmieUCqQmQ1HEbS5cPDi7LtbCJ HBuCUmHtOmgGynv7u0KrBIZa0MiGkRbf17IqPjTyywqjqk2q7nE5Gwsb2av5HPRDzgCGWW 3MBUHEsF441/67YtaMlH+THdpg/Fl/c6W5oWMLtmrokAbdoKqH/8rEDl6aoHn3ObzKrVRU KME44FGXd8fiFy9DDfRf4mF4sFeU0OTXzGEz3Eqz4FLX99d2CViK9O2/bAW7zg== From: John Watts To: alsa-devel@alsa-project.org Cc: Liam Girdwood , Mark Brown , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Jaroslav Kysela , Takashi Iwai , Charles Keepax , John Watts , patches@opensource.cirrus.com, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v4 3/3] ASoC: dt-bindings: wlf,wm8782: Add wlf,fsampen property Date: Mon, 18 Sep 2023 23:15:32 +1000 Message-ID: <20230918131532.2257615-4-contact@jookia.org> In-Reply-To: <20230918131532.2257615-1-contact@jookia.org> References: <20230918131532.2257615-1-contact@jookia.org> MIME-Version: 1.0 X-Migadu-Flow: FLOW_OUT Message-ID-Hash: RRZLW6BLPB42CQAUVKPI65I6T3ADHUR2 X-Message-ID-Hash: RRZLW6BLPB42CQAUVKPI65I6T3ADHUR2 X-MailFrom: contact@jookia.org X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; header-match-alsa-devel.alsa-project.org-0; header-match-alsa-devel.alsa-project.org-1; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header X-Mailman-Version: 3.3.8 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: The WM8782 can safely support rates higher than 48kHz by changing the value of the FSAMPEN pin. Allow specifying the FSAMPEN pin value in the device tree. Signed-off-by: John Watts Acked-by: Charles Keepax --- Documentation/devicetree/bindings/sound/wm8782.txt | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/Documentation/devicetree/bindings/sound/wm8782.txt b/Documentation/devicetree/bindings/sound/wm8782.txt index 256cdec6ec4d..1a28f3280972 100644 --- a/Documentation/devicetree/bindings/sound/wm8782.txt +++ b/Documentation/devicetree/bindings/sound/wm8782.txt @@ -8,10 +8,17 @@ Required properties: - Vdda-supply : phandle to a regulator for the analog power supply (2.7V - 5.5V) - Vdd-supply : phandle to a regulator for the digital power supply (2.7V - 3.6V) +Optional properties: + + - wlf,fsampen: + FSAMPEN pin value, 0 for low, 1 for high, 2 for disconnected. + Defaults to 0 if left unspecified. + Example: wm8782: stereo-adc { compatible = "wlf,wm8782"; Vdda-supply = <&vdda_supply>; Vdd-supply = <&vdd_supply>; + wlf,fsampen = <2>; /* 192KHz */ };