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 20244C88CB2 for ; Mon, 12 Jun 2023 17:35:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:Content-Type: List-Subscribe:List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id: In-Reply-To:MIME-Version:References:Message-ID:Subject:Cc:To:From:Date: Reply-To:Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date :Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=NkCxTmEfiW+2kWXtZs0ooJeX29cEWTXYMLvF3AhQg2c=; b=nqq1CccqLXwquvs37rHhGoJBxW jyrWQ8EHfPQ93oylTrq5PCL1NQconkmtoJpE2m/qlRdz35+OCojjvUFmnW1pE1Nhg2wIjgvl890ee rQIMKEZ3LweT+WWdgxbGV3Pc4SBOWqBJk6Qu84CK3TlR2Sj7lUNeRbWHBia9VulSciqJkUX5YhjBN 8s5fUZgVN6NBvgXNSX0B7Adt9VPoCDZ4l/Gm93uPK3ntsXx1sShbr25wRL2dZPQ9nO/+PWp0bBM9v p1sv3alMuW/aGntmNiLUsgF3vGGSszxIzZo+uH2cOqsa3JiJetU64fz/cZeYibcoc6W/ysdlmJEnx O4u2ioKw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1q8lRH-004nMl-3B; Mon, 12 Jun 2023 17:34:47 +0000 Received: from dfw.source.kernel.org ([139.178.84.217]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1q8lRE-004nL8-2r; Mon, 12 Jun 2023 17:34:46 +0000 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 9B82C6146A; Mon, 12 Jun 2023 17:34:43 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 82225C433D2; Mon, 12 Jun 2023 17:34:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1686591283; bh=krvfK0/q6PmPdvzX+Hdeinv7nYJ3LKMoC434Ebw/YGE=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=daEMvXEFNX5MsuOFcFsYRewvi2fCkfEzBJe5grsXSO+Dhu0/nUfssYuOBxn3KagFc D3YdhRxV/+KL9OoY4uscICNCiWsQ1vJ+2t8w4K9EQS9KHFW6mEPiLr+t4McjDdm4jo px0VI7+MLXCfb/06ZasT0YlPEoVUxu1xrI1t8Hvk/fdfHEiY8UStLOefgCjl/iAs5e QG1CDnSUmhLOvmdIXGlEQQTY+4jGKThYmXzzQfhWBhcV8RChk2LKRgBddjMlxKaMvn RbAhJmtM7TuNbFz8RYkH3s5CnGDErhO1sZHsfgozlCOgavCjjZ80xT/osG2uQRt5GZ gydN/i3jNJASA== Date: Mon, 12 Jun 2023 18:34:37 +0100 From: Conor Dooley To: Chen-Yu Tsai Cc: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Mark Brown , Liam Girdwood , Matthias Brugger , AngeloGioacchino Del Regno , devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 3/9] regulator: mt6358: Merge VCN33_* regulators Message-ID: <20230612-ardently-undertow-5060562a6c7a@spud> References: <20230609083009.2822259-1-wenst@chromium.org> <20230609083009.2822259-4-wenst@chromium.org> <20230609-unpaved-propeller-b361fba89913@spud> <20230610-bucket-rebuttal-c7c44c5b0a66@spud> MIME-Version: 1.0 In-Reply-To: X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230612_103444_999746_679FA49F X-CRM114-Status: GOOD ( 24.43 ) 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: , Content-Type: multipart/mixed; boundary="===============8140709684341065454==" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org --===============8140709684341065454== Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="sGt7s4jlNXh0bRiH" Content-Disposition: inline --sGt7s4jlNXh0bRiH Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Mon, Jun 12, 2023 at 12:19:01PM +0800, Chen-Yu Tsai wrote: > On Sat, Jun 10, 2023 at 11:28=E2=80=AFPM Conor Dooley = wrote: > > Ah, I see in the binding commit there's a "Luckily no device tree actua= lly > > uses them." Does that just cover the kernel, or does it consider other > > operating systems/bootloaders? >=20 > That comment covers the upstream kernel and the downstream ChromeOS kernel > specifically. The bootloader that ChromeOS uses (coreboot) doesn't use > device trees. I don't know what MediaTek uses for their phones though. >=20 > AFAIK MediaTek only supports the Linux kernel, be it for Android or Chrom= eOS. > There's not a large community around it, unlike some of the other ARM SoC= s. >=20 > I did find an old v4.4 Android kernel [1] for the MediaTek Helio P60 > (MT6771) that is also paired with MT6358. There are no device tree > references to the VCN33 regulator either. Only the definition exists > in the mt6358.dtsi file, much like what we have upstream. >=20 > As far as the regulator driver goes, if it can't find a matching regulator > node, it's the same as if the node doesn't exist, and therefore the given > constraints are not ingested. If no constraints are ingested that can > turn it on, and no consumer references to enable it either, we can say > that the regulator is effectively unused. Okay, that sounds reasonable. Seems like you've done your research, so thanks for that! --sGt7s4jlNXh0bRiH Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQRh246EGq/8RLhDjO14tDGHoIJi0gUCZIdXLQAKCRB4tDGHoIJi 0rA9AQDwMUmhZfjdCs786HEk1DGNkXy1ugjH0Nc6pP0ntHEGHgEAupMpRQXYl1g0 kmfIm+oR6urnbBisNHxTkzBCjokx4g4= =BCFa -----END PGP SIGNATURE----- --sGt7s4jlNXh0bRiH-- --===============8140709684341065454== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel --===============8140709684341065454==--