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 X-Spam-Level: X-Spam-Status: No, score=-7.6 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE, SPF_PASS,TVD_SUBJ_WIPE_DEBT,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 40313C433E0 for ; Mon, 27 Jul 2020 17:21:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 22E03207FC for ; Mon, 27 Jul 2020 17:21:55 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="bR0FASMj" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729925AbgG0RVy (ORCPT ); Mon, 27 Jul 2020 13:21:54 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37100 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726617AbgG0RVy (ORCPT ); Mon, 27 Jul 2020 13:21:54 -0400 Received: from mail-ed1-x544.google.com (mail-ed1-x544.google.com [IPv6:2a00:1450:4864:20::544]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E621AC061794; Mon, 27 Jul 2020 10:21:53 -0700 (PDT) Received: by mail-ed1-x544.google.com with SMTP id v22so1950984edy.0; Mon, 27 Jul 2020 10:21:53 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=JQFg/tuqC69nq4syC+NIzcUchGfUtpXP0Ly9EEV6q9w=; b=bR0FASMjL4z+0B/JjcAOfYteJgbqeP8phEzKi5euWMWPMmwA5lazWKCYGAUdocKlAy tSc2QXxiNeAOixUwttglaxM+a+/PR/UpTPyn54J/dxBCixJsirZ47GVR6s7O9zitXJeY fRk3QXB1fXKsPfFnQEw2g65ENidyRLvCIcnzvFoivqHwd67q5QlgbYUC6EGysfYlFvL9 cpdB8JtsNFnbHDZfpAYLA+a64bb8SP89P+ICFtmLlR4Hsv2aHCME4WQYTqspXHW3ZzRN Vzso4Zpa4m51BFx71j8YLd3z1E9Ssc7RCVgixRBQJP10x+uljl7nRWLeJfDdl9Th80vJ U5qA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to:user-agent; bh=JQFg/tuqC69nq4syC+NIzcUchGfUtpXP0Ly9EEV6q9w=; b=tmv9GhBpilzZnky/DaAj9BkPfiuP838MthiQ7WayqpwL3V6xVDtHZcSwCuLef7gy0w BCEqyMcCPutqAySILeXwVQ6vKE8dhqaauR7zFGsynnIEVIJD2E68G3kmS8hMfdhlSgZb oJOIv2qJs9mZMu2d+RGB/XxcTijc6s/2dZqqK3vMbmIozZfD3LGap2vHlILRshrJPjDZ tYeNCtRCRld5AAYjTkHPj3FQh1FUZOqQPFOcseth3zzHO+F8L5DQ8s7JsN3+TEOHI+1X lY4sRjkAizFbu+Uwx/Z7uT5F0vJ+ju+8qGLeLbqiPG2EaKCU1B2nCUINzCKZhn03Vxr8 2Nxg== X-Gm-Message-State: AOAM532f8m+vrn1t75KbiOlbrKQoA4HfQ0/VH4PM2HnamZH02+e9fxMr nZsp1gMyDLJE23B3y2Ps6UA= X-Google-Smtp-Source: ABdhPJyKry89myng9wQIUC9m3H7em+oOGI6l4RFO9E36aaGOh8XqIHdY+ObjRip7xj/46V7E1bZ3SQ== X-Received: by 2002:a05:6402:1841:: with SMTP id v1mr22405337edy.198.1595870512455; Mon, 27 Jul 2020 10:21:52 -0700 (PDT) Received: from localhost ([62.96.65.119]) by smtp.gmail.com with ESMTPSA id h24sm7373165ejg.53.2020.07.27.10.21.50 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 27 Jul 2020 10:21:50 -0700 (PDT) Date: Mon, 27 Jul 2020 19:21:49 +0200 From: Thierry Reding To: Rob Herring Cc: Lorenzo Pieralisi , Bjorn Helgaas , Jon Hunter , PCI , linux-tegra Subject: Re: [PATCH v2 2/2] PCI: tegra: Remove PLL power supplies Message-ID: <20200727172149.GA3683017@ulmo> References: <20200623145528.1658337-1-thierry.reding@gmail.com> <20200623145528.1658337-2-thierry.reding@gmail.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="C7zPtVaVf+AK4Oqc" Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.14.4 (2020-06-18) Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org --C7zPtVaVf+AK4Oqc Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Mon, Jul 27, 2020 at 10:21:42AM -0600, Rob Herring wrote: > On Tue, Jun 23, 2020 at 8:55 AM Thierry Reding = wrote: > > > > From: Thierry Reding > > > > The Tegra PCI controller driver doesn't need to control the PLL power > > supplies directly, but rather uses the pads provided by the XUSB pad > > controller, which in turn is responsible for supplying power to the > > PLLs. > > > > Signed-off-by: Thierry Reding > > --- > > drivers/pci/controller/pci-tegra.c | 10 ++-------- > > 1 file changed, 2 insertions(+), 8 deletions(-) >=20 > What's going to happen here with a new dtb and an old kernel? Is it > going to error out due to missing supplies? It's not going to error out but fallback to the "dummy" regulator, so this should be fine from a forwards-compatibility point of view. Though I didn't think we technically cared about that direction very much. Thierry --C7zPtVaVf+AK4Oqc Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEEiOrDCAFJzPfAjcif3SOs138+s6EFAl8fDSgACgkQ3SOs138+ s6EHIQ//UL8Gqkmrx9PPmLdqE+raOpVdcOGUKg7dNSa1S/7o856UKMNFSJ9L+T2+ Wyziy5ouGiB162Z/EH6mCLkOmen9IZ58HDuTYu4jLH8MY3Pr4u8+zRpbri+c2AVc joPgC+9jtfShilhBRy462g9LyDhKtW7PVuv1yjAcQEA2k6Xm9F8gt96m/UJBJltP SdcHo9apg6ilNdZj8MqM93ZwYL2++a7d7PGvmwh+gZlCpO9IVKrNATilvSJHwBWy 0/RjxtZf7ZprY+izjvOarG8iQNU5Ag6bI2FrZ2k8N/zte696QcABU+5B78HTkLan iJ/230/yHsbiFBTJAU3K09KUIEh4GzGLBnOk+/6OiJjTwXuDDkmIu4Ua0QSTYqwq 2NAUf3ivUwHMjmwfrhxM1RzLjBQ2dCCMVZuaRGFOyOMS8IkQsWv4ELQajETE0MCp 4dofQK+ilqLjn8nMgQIha0enV8O7MlvBK958IJQLffRLm2itj4pWGKDdEtE9XALq oJrLfx6WL698hZj7VoeMz5c/QOaaw929kx9OL6q8bX9x2smLAIXLzxg3udn4t04V ZZdGct5NLlSNOV4ycAF51754TGZt6n+jZDYIDHC7i882n83wRxrKpVvmZ0jqkNor xAd+iGsSvDnJOaRq7ePZQU4CBK39293YuBU9vWEZXL1C+lGKa0c= =Da08 -----END PGP SIGNATURE----- --C7zPtVaVf+AK4Oqc--