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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 BC6EDC55182 for ; Mon, 3 Aug 2026 18:13:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Type: Content-Transfer-Encoding:MIME-Version:References:In-Reply-To:Message-ID:Date :Subject:Cc:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=+rNOCgic9Kg3tyw9O1nqGoQ5hjaojitt9FcWiBaYtU4=; b=dO/UaKH/91oOTVPxpig/0oajN1 lTwNA2Xfla9yILwjw1PL3wDqF+3xftBIKtooN3Idf8pdOcQs9FeNamGi7XELtbqYCDBXPvB2vaSgO 3OJwQPhM7ARjqNWDW5KQx6PoLct6d3fG27RkwICqtrCQRyr4paz2VUIzGZjZFZ8VNvBT7xgN3KHPC MqjpLYy8e7ZU+6lj7Rrmg/fIyhGGIA0fppCpItwkJuO82CH13+nO+uGJnOLBaVDv1EpFaIApRtVns q3/XlDJXzMePjosr3kc0CgoSx3emRLSKyujapSKPnANtv6xmpwf4GSmkcxVTj2CID5glgFEUHlDDg pcNR+W6A==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wqx9o-00000000Ld0-2JN2; Mon, 03 Aug 2026 18:13:00 +0000 Received: from ms.puri.sm ([135.181.196.210]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1wqx9k-00000000Lao-42Md; Mon, 03 Aug 2026 18:12:58 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=puri.sm; s=smtp2; t=1785780772; bh=HNTPaYDGutREzLTVPWESt82E01iFz+jQ39UPafEurv0=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=J4qIa0M3q9Mja66JJpMWCm3Si2k+eQxKBPYsxWlsjhzfhFhyNWkHOce9T4N2rqDaA kEmxNLjWJMeQEHDhJ5UGXkpeibsTQ5FNwkQR0x7UnO77zXdxXGMA00/OFQkd/fCgSc 6gZulAcTEPaP0/4e+WFabqGthdJvYdZUuaEdjBfYKwQQ3V4pyKcPDqIGq8SVIBvdNT XG4o2BAoNJclC5KD2v8WfgpNg7zAq0p3jURjCMHKPQ58y8ibkwVhykQHlXlncggeTq mDrVCDZBH3C/DsnWTYfXBbi4VpA/j86hwwBXQPHp1E0qCCB5XIeh536HehZjTFh+3v 36zRINnOxbN2Q== Received: from pliszka.localnet (79.184.66.106.ipv4.supernova.orange.pl [79.184.66.106]) by ms.puri.sm (Postfix) with ESMTPSA id A9F351F617; Mon, 03 Aug 2026 11:12:47 -0700 (PDT) From: Sebastian Krzyszkowiak To: Sakari Ailus , Mauro Carvalho Chehab , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Heiko Stuebner , Ondrej Jirman , Olivier Benjamin , Manuel Traut , Alexander Warnecke , Frank Li , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , Martin Kepplinger , Shawn Guo , david@ixit.cz Cc: Krzysztof Kozlowski , linux-media@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, phone-devel@vger.kernel.org, imx@lists.linux.dev, David Heidelberg , stable@vger.kernel.org Subject: Re: [PATCH 4/4] arm64: dts: imx8mq-librem5: Dongwoon DW9714 coil requires higher voltage Date: Mon, 03 Aug 2026 20:12:44 +0200 Message-ID: In-Reply-To: <20260801-pp-pro-camera-v1-4-7b4d90788f9f@ixit.cz> References: <20260801-pp-pro-camera-v1-0-7b4d90788f9f@ixit.cz> <20260801-pp-pro-camera-v1-4-7b4d90788f9f@ixit.cz> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260803_111257_176366_49494137 X-CRM114-Status: GOOD ( 15.43 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On sobota, 1 sierpnia 2026 02:35:23 czas =C5=9Brodkowoeuropejski letni Davi= d=20 Heidelberg via B4 Relay wrote: > From: David Heidelberg >=20 > By datasheet the VDD (in-kernel named vcc) range is between 2.3 to 4.3 V. > Usually it's around 2.8 V. Here it matches the reg_vcam_2v8. It doesn't - VCAM_2V8 isn't connected to DW9714 (and neither is CSI_1V8);=20 VCAM_AFVDD is. > 1.8 V here is likely used for i2c level shifter. I'm not sure where you've got an I2C level shifter from, there's none invol= ved=20 there. CSI_1V8 is passed to the rear camera module as DOVDD and is consumed= by=20 S5K3L6 as VDDIO, and both S5K3L6 and DW9714 are connected to I2C4_SDA/ I2C4_SCL, operating at the 1.8V level, only though an EMI filter (F7 in the= =20 schematic). >=20 > Fixes: f00df2bdb512 ("arm64: dts: imx8mq-librem5: describe the voice coil > motor for focus control") Cc: stable@vger.kernel.org > Signed-off-by: David Heidelberg > --- > arch/arm64/boot/dts/freescale/imx8mq-librem5.dtsi | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) >=20 > diff --git a/arch/arm64/boot/dts/freescale/imx8mq-librem5.dtsi > b/arch/arm64/boot/dts/freescale/imx8mq-librem5.dtsi index > f5d529c5baf3e..583cba2d3bebf 100644 > --- a/arch/arm64/boot/dts/freescale/imx8mq-librem5.dtsi > +++ b/arch/arm64/boot/dts/freescale/imx8mq-librem5.dtsi > @@ -1167,17 +1167,17 @@ &i2c4 { > pinctrl-1 =3D <&pinctrl_i2c4_gpio>; > scl-gpios =3D <&gpio5 20 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>; > sda-gpios =3D <&gpio5 21 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>; > status =3D "okay"; >=20 > vcm@c { > compatible =3D "dongwoon,dw9714"; > reg =3D <0x0c>; > - vcc-supply =3D <®_csi_1v8>; > + vcc-supply =3D <®_vcam_2v8>; > }; >=20 > bat: fuel-gauge@36 { > compatible =3D "maxim,max17055"; > reg =3D <0x36>; > interrupt-parent =3D <&gpio3>; > interrupts =3D <20 IRQ_TYPE_LEVEL_LOW>; > pinctrl-names =3D "default";