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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 78044C433EF for ; Mon, 21 Feb 2022 06:44:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1345554AbiBUGo0 (ORCPT ); Mon, 21 Feb 2022 01:44:26 -0500 Received: from mxb-00190b01.gslb.pphosted.com ([23.128.96.19]:41564 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1345521AbiBUGoT (ORCPT ); Mon, 21 Feb 2022 01:44:19 -0500 Received: from inva020.nxp.com (inva020.nxp.com [92.121.34.13]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5C96F3BBC3; Sun, 20 Feb 2022 22:42:18 -0800 (PST) Received: from inva020.nxp.com (localhost [127.0.0.1]) by inva020.eu-rdc02.nxp.com (Postfix) with ESMTP id 0532E1A2158; Mon, 21 Feb 2022 07:42:17 +0100 (CET) Received: from aprdc01srsp001v.ap-rdc01.nxp.com (aprdc01srsp001v.ap-rdc01.nxp.com [165.114.16.16]) by inva020.eu-rdc02.nxp.com (Postfix) with ESMTP id C25061A214E; Mon, 21 Feb 2022 07:42:16 +0100 (CET) Received: from localhost.localdomain (shlinux2.ap.freescale.net [10.192.224.44]) by aprdc01srsp001v.ap-rdc01.nxp.com (Postfix) with ESMTP id 52EBF183ABE7; Mon, 21 Feb 2022 14:42:15 +0800 (+08) From: Richard Zhu To: l.stach@pengutronix.de, bhelgaas@google.com, lorenzo.pieralisi@arm.com, shawnguo@kernel.org Cc: hongxing.zhu@nxp.com, linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, kernel@pengutronix.de, linux-imx@nxp.com Subject: [PATCH v4 2/2] PCI: imx6: Enable i.MX6QP PCIe power management support Date: Mon, 21 Feb 2022 14:33:57 +0800 Message-Id: <1645425237-4071-2-git-send-email-hongxing.zhu@nxp.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1645425237-4071-1-git-send-email-hongxing.zhu@nxp.com> References: <1645425237-4071-1-git-send-email-hongxing.zhu@nxp.com> X-Virus-Scanned: ClamAV using ClamSMTP Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org i.MX6QP PCIe supports the reset logic, thus it can reset itself to the initialized state when exit from L2 or L3 states. Enable the i.MX6QP PCIe suspend/resume operations support. Signed-off-by: Richard Zhu Reviewed-by: Lucas Stach --- drivers/pci/controller/dwc/pci-imx6.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c index 784801f2f9e6..62262483470a 100644 --- a/drivers/pci/controller/dwc/pci-imx6.c +++ b/drivers/pci/controller/dwc/pci-imx6.c @@ -995,6 +995,7 @@ static void imx6_pcie_pm_turnoff(struct imx6_pcie *imx6_pcie) /* Others poke directly at IOMUXC registers */ switch (imx6_pcie->drvdata->variant) { case IMX6SX: + case IMX6QP: regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR12, IMX6SX_GPR12_PCIE_PM_TURN_OFF, IMX6SX_GPR12_PCIE_PM_TURN_OFF); @@ -1307,7 +1308,8 @@ static const struct imx6_pcie_drvdata drvdata[] = { [IMX6QP] = { .variant = IMX6QP, .flags = IMX6_PCIE_FLAG_IMX6_PHY | - IMX6_PCIE_FLAG_IMX6_SPEED_CHANGE, + IMX6_PCIE_FLAG_IMX6_SPEED_CHANGE | + IMX6_PCIE_FLAG_SUPPORTS_SUSPEND, .dbi_length = 0x200, }, [IMX7D] = { -- 2.25.1