From nobody Sat May 10 06:37:38 2025 Delivered-To: importer2@patchew.org Received-SPF: pass (zohomail.com: domain of vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; envelope-from=linux-kernel-owner@vger.kernel.org; helo=vger.kernel.org; Authentication-Results: mx.zohomail.com; dkim=fail; spf=pass (zohomail.com: domain of vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass(p=none dis=none) header.from=kernel.org ARC-Seal: i=1; a=rsa-sha256; t=1612272694; cv=none; d=zohomail.com; s=zohoarc; b=mfHKefMSGZUdXe82Od6CBRDpEuSyQJzPu0tZbSfwKqiEk651D7Dyb0bkkuEtVQDDHliIvx4M2Ms21w8odzBIJH5XbJmewCdI5fRzFZ9o/h8QTHbsdYVkQWX+1A3foxXB0xxHhSwKi3i0citCROyomWbm4eI8fOnmXI2/H2aT7+o= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1612272694; h=Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Id:MIME-Version:Message-ID:References:Sender:Subject:To; bh=wV524n0YUHy1im91idFleoOQuOZ6J+4kEYZ7WF3B4m8=; b=HCD/V7rT05B+Cfoz7mtjPuVApZnieTXdc50XyGLn4KTCZX75bWv27GInfqHHguK3zR3UkMigNY5oC4VuTDLFtys7sFduOS9jCFQe3jCzzDDSO+52k3+pdI9FFWcCbzhRep73YAqNLuIB9plswLQNd9z1JPU7Ecm+Bvt+qnb7Eqw= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=fail; spf=pass (zohomail.com: domain of vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass header.from= (p=none dis=none) header.from= Return-Path: Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mx.zohomail.com with SMTP id 1612272694637839.2373751939886; Tue, 2 Feb 2021 05:31:34 -0800 (PST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232042AbhBBNat (ORCPT ); Tue, 2 Feb 2021 08:30:49 -0500 Received: from mail.kernel.org ([198.145.29.99]:59330 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231666AbhBBNam (ORCPT ); Tue, 2 Feb 2021 08:30:42 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id C7BBC64F45; Tue, 2 Feb 2021 13:30:01 +0000 (UTC) Received: by mail.kernel.org with local (Exim 4.94) (envelope-from ) id 1l6vkl-0011z5-P5; Tue, 02 Feb 2021 14:29:59 +0100 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1612272602; bh=AH432J4B7ZDZZSd0PksUuJcGVmlwemb+J6aFQtCeJ8E=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=urcf2yeHU1lygxszS/epnxF/w1NsCkpIfUSIzGodkmWwz/CJqrbqu85px6M1tSB+T xHfYq0dIsT0cLXTvypR4U8ZC7VTEpc2jfQQJCBzPe/gebS8atBZiM1TN3bOhSva4aM r02krnYVvuCiu2NKrywlLbIpFMMsWY1yjiANu787bL8Xlx8NY0oFKDAMZOq2xqSwIy Sl37NraJTwaHv4ZY40jfmdBMflvKKule2AxYJJwYIcQJaH26rYwOaHmK1iEgFAMKJx vgcXBLUObG3FHj92rwKoSHt+LixBVAJTVeik6k4aPJdVLwXT7OQ3xcDggAjE2suOAL ZwNtqjK+a9Bew== From: Mauro Carvalho Chehab Cc: Mauro Carvalho Chehab , Binghui Wang , Bjorn Helgaas , Liam Girdwood , Lorenzo Pieralisi , Mark Brown , Rob Herring , Xiaowei Song , linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org Subject: [PATCH 09/13] pci: dwc: pcie-kirin: allow to optionally require a regulator Date: Tue, 2 Feb 2021 14:29:54 +0100 Message-Id: <7f4abd1ba9f4b33fe6f66213f56aa4269db74317.1612271903.git.mchehab+huawei@kernel.org> X-Mailer: git-send-email 2.29.2 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Sender: Mauro Carvalho Chehab To: unlisted-recipients:; (no To-header on input) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Type: text/plain; charset="utf-8" On Hikey 970, there's a power supply controlled by Hi6421v600 regulator that turns on the PCI devices on the board. Without that, no PCI hardware would work. As this is device-dependent, such regulator line should be optional. Signed-off-by: Mauro Carvalho Chehab --- drivers/pci/controller/dwc/pcie-kirin.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/drivers/pci/controller/dwc/pcie-kirin.c b/drivers/pci/controll= er/dwc/pcie-kirin.c index 2bce6e3750d4..42aea34dff4d 100644 --- a/drivers/pci/controller/dwc/pcie-kirin.c +++ b/drivers/pci/controller/dwc/pcie-kirin.c @@ -22,6 +22,7 @@ #include #include #include +#include #include #include #include "pcie-designware.h" @@ -295,6 +296,22 @@ static void kirin970_pcie_set_eyeparam(struct kirin_pc= ie *kirin_pcie) static long kirin_common_pcie_get_resource(struct kirin_pcie *kirin_pcie, struct platform_device *pdev) { + struct device *dev =3D &pdev->dev; + struct regulator *reg; + int ret; + + reg =3D devm_regulator_get_optional(dev, "pci"); + if (IS_ERR_OR_NULL(reg)) { + if (PTR_ERR(reg) =3D=3D -EPROBE_DEFER) + return PTR_ERR(reg); + } else { + ret =3D regulator_enable(reg); + if (ret) { + dev_err(dev, "Failed to enable regulator\n"); + return ret; + } + } + kirin_pcie->apb_base =3D devm_platform_ioremap_resource_byname(pdev, "apb"); if (IS_ERR(kirin_pcie->apb_base)) --=20 2.29.2