From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=210.118.77.11 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1792596143; b=z3yXNhXNkOHZQN6W/gBUN75T/gDoZPzvv2iA0IlPsuYV70O6MfR6BE2KD9A6qevEv1VI g4RUDB3CAS5GyKl9jl+mPtcm+N64/JacTdKgmwHtP9fMVm7QxqoW3jrsEapfWzTqr0G6L BsgGmLUpe377SA2jLKI24HzTQkKRi+PAMWZFko7HFSWflgtxk977ifPXwO8ODmg4rVQUI Jcahg0D3mPsJGI8g4nVdZN8KHrZwkRhjhTlLU7AsjVBD/bB44a1pyUp78jddQGq1eiMfn wlHHzXtBNDtEiYaPiKQDvwH7MX83zxOEBYsBy38CFgiGQKfR6+zu5b4L6GJDcLFw+hQ== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1792596143; h=DMARC-Filter:Received:DKIM-Filter:DKIM-Signature:Received:Received: From:To:Cc:In-Reply-To:Subject:Date:Message-ID:MIME-Version: Content-Transfer-Encoding:X-Mailer:Thread-Index:Content-Language: X-CMS-MailID:X-Msg-Generator:Content-Type:X-RootMTR:X-EPHeader: X-CMS-RootMailID:References; bh=CLS0Qs2ubIbRXjhR0X7BaSSYFVvieMwMEkgPkbahYNk=; b=FJIIQpvVNM1zzmfK6w7D9jpUc0FhkuI7aIoXZxW1rQ206Yy768cMJc9CELvoF9c1eUqK RUUwWsWnJtQBP2o+TaPlDgp17K7aKYWNYu3AuZJrGR2udZJzORYUagHiOSH2YUEvr6iOD jcWiOz/FTP0kg+ohTljFfjQFwbyoVj2SM9PBp/jkc/XFwGlZgFcE1jrFvKhs3UVOHOK4R e+HscOFHLsIYP2Cx3p9/M0jGSGCrEsjDXNo5MAWGR+yvQKV9tkSrQmgUUFe4GC2ESqUrq 8rPQbGeUR1TnKhNL9/fRwQtfjRxgocNNiXqmu3i5IHclOyN3Z03YdlPpiUWuEX+zlgw== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass header.from=samsung.com; spf=pass smtp.mailfrom=samsung.com; dkim=pass header.d=samsung.com header.i=@samsung.com header.a=rsa-sha256 header.s=mail20170921 header.b=ByjUL6AQ; arc=none smtp.remote-ip=210.118.77.11 Received: from mailout1.w1.samsung.com (mailout1.w1.samsung.com [210.118.77.11]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8200A606A319 for ; Wed, 21 Oct 2026 15:22:22 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.2 smtp.subspace.kernel.org 8200A606A319 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=samsung.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=samsung.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key, unprotected) header.d=samsung.com header.i=@samsung.com header.a=rsa-sha256 header.s=mail20170921 header.b=ByjUL6AQ Received: from eucas1p2.samsung.com (unknown [182.198.249.207]) by mailout1.w1.samsung.com (KnoxPortal) with ESMTP id 20261021152221euoutp01870e2a2a969b1a864a5b55ea4d30e239~glLFYSKC12463724637euoutp01s for ; Wed, 21 Oct 2026 15:22:21 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 mailout1.w1.samsung.com 20261021152221euoutp01870e2a2a969b1a864a5b55ea4d30e239~glLFYSKC12463724637euoutp01s DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=samsung.com; s=mail20170921; t=1792596141; bh=CLS0Qs2ubIbRXjhR0X7BaSSYFVvieMwMEkgPkbahYNk=; h=From:To:Cc:In-Reply-To:Subject:Date:References:From; b=ByjUL6AQV3xkJ+Cz9hGoqvstz8R8qIuTDnGHY2R1qXT6aJiQ0PvEf0VmeKx7Tzki5 b/12JzgHThH09kmBDIQmoOUeRNQK8i4dwOSeyIq+3oGP8j7vXDoKoG/3NiEY8ywkFr NQVUFEJZE/A7OsHNfu8W+VGmQRz5Ux+9EiIIkutE= Received: from eusmtip1.samsung.com (unknown [203.254.199.221]) by eucas1p2.samsung.com (KnoxPortal) with ESMTPA id 20261021152220eucas1p2edd000dd4dfc1eced6604af872dbb7b7~glLFE25Ey3066530665eucas1p2O; Wed, 21 Oct 2026 15:22:20 +0000 (GMT) Received: from AMDN5751 (unknown [106.120.87.45]) by eusmtip1.samsung.com (KnoxPortal) with ESMTPA id 20261021152220eusmtip113c6a29c39b6379eaf87859e1f59c3a9~glLEoKbHX0630006300eusmtip1G; Wed, 21 Oct 2026 15:22:20 +0000 (GMT) From: "Sylwester Nawrocki" To: "'Marek Szyprowski'" Cc: "'Liam Girdwood'" , "'Mark Brown'" , "'Charles Keepax'" , "'Krzysztof Kozlowski'" , "'Simon Shields'" , "'Artur Weber'" , , In-Reply-To: <20261021101750.3297770-3-m.szyprowski@samsung.com> Subject: RE: [PATCH 2/4] ASoC: wm8994: don't lose the AIF clock ratio when staying at 32kHz SYSCLK Date: Wed, 21 Oct 2026 17:22:19 +0200 Message-ID: <000201dd616f$f7178200$e5468600$@samsung.com> X-Mailing-List: linux-sound@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Mailer: Microsoft Outlook 16.0 Thread-Index: AQKrkeRVrtMc7xGFxDI3/ROeqrh4mgIRsRXtAyywVpO1QcQeYA== Content-Language: pl X-CMS-MailID: 20261021152220eucas1p2edd000dd4dfc1eced6604af872dbb7b7 X-Msg-Generator: CA Content-Type: text/plain; charset="utf-8" X-RootMTR: 20261021101816eucas1p11dafbfaefa1ca53c6518adcc14322931 X-EPHeader: CA X-CMS-RootMailID: 20261021101816eucas1p11dafbfaefa1ca53c6518adcc14322931 References: <20261021101750.3297770-1-m.szyprowski@samsung.com> <20261021101750.3297770-3-m.szyprowski@samsung.com> > -----Original Message----- > From: Marek Szyprowski > Sent: =C5=9Broda,=2021=20pa=C5=BAdziernika=202026=2012:18=0D=0A>=20Cc:=20= Marek=20Szyprowski=20;=20Liam=20Girdwood=0D=0A>= =20;=20Mark=20Brown=20;=20Sylw= ester=0D=0A>=20Nawrocki=20;=20Charles=20Keepax=0D= =0A>=20;=20Krzysztof=20Kozlowski=20;=0D=0A>=20Simon=20Shields=20;=20Artur= =20Weber=0D=0A>=20;=20patches=40opensource.cirru= s.com;=20linux-=0D=0A>=20sound=40vger.kernel.org=0D=0A>=20Subject:=20=5BPAT= CH=202/4=5D=20ASoC:=20wm8994:=20don't=20lose=20the=20AIF=20clock=20ratio=20= when=0D=0A>=20staying=20at=2032kHz=20SYSCLK=0D=0A>=20=0D=0A>=20When=20SYSCL= K=20drops=20below=2050kHz,=20the=20AIFnCLK=20rate=20ratio=20is=20saved=20an= d=0D=0A>=20temporarily=20lowered=20to=20128fs=20for=20accessory=20detection= ,=20then=20restored=0D=0A>=20once=20SYSCLK=20gets=20fast=20enough=20again.= =20The=20ratio=20is=20however=20saved=20again=0D=0A>=20on=20each=20clock=20= reconfiguration=20done=20while=20SYSCLK=20is=20still=20slow,=20which=0D=0A>= =20overwrites=20the=20original=20ratio=20with=20the=20128fs=20one.=0D=0A>= =20=0D=0A>=20This=20happens=20on=20the=20Exynos4412=20Trats2=20board,=20whi= ch=20set=20MCLK2=20as=20SYSCLK=0D=0A>=20twice=20during=20the=20card=20probe= =20and=20then=20configure=20FLL1=20while=20still=20running=0D=0A>=20from=20= MCLK2.=20Once=20SYSCLK=20is=20switched=20to=20FLL1,=20the=20128fs=20ratio= =20is=0D=0A>=20=22restored=22,=20so=20AIF1=20is=20left=20configured=20for= =2048kHz=20at=20128fs=20while=20being=0D=0A>=20clocked=20at=20256fs.=20If= =20any=20digital=20path=20is=20powered=20up=20before=20a=20stream=0D=0A>=20= reconfigures=20the=20AIF,=20the=20codec=20raises=20FIFO=20error=20interrupt= s=20every=0D=0A>=2010ms,=20flooding=20the=20kernel=20log:=0D=0A>=20=0D=0A>= =20=20wm8994-codec=20wm8994-codec:=20FIFO=20error=0D=0A>=20=0D=0A>=20Save= =20the=20original=20ratio=20only=20when=20entering=20the=20low=20SYSCLK=20m= ode.=20While=0D=0A>=20at=20it,=20move=20the=20code=20duplicated=20in=20_wm8= 994_set_fll()=20and=0D=0A>=20wm8994_set_dai_sysclk()=20to=20a=20common=20he= lper.=0D=0A>=20=0D=0A>=20Fixes:=206730049a4763=20(=22ASoC:=20wm8994:=20Lowe= r=20AIFnCLK=20divisor=20when=0D=0A>=20dropping=20to=2032kHz=22)=0D=0A>=20Si= gned-off-by:=20Marek=20Szyprowski=20=0D=0A=0D= =0AReviewed-by:=20Sylwester=20Nawrocki=20=0D=0A= =0D=0A=0D=0A=0D=0A