From patchwork Fri Aug 4 02:09:34 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Richard Zhu X-Patchwork-Id: 13341169 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 9EFB2EB64DD for ; Fri, 4 Aug 2023 02:44:43 +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-Transfer-Encoding:Content-Type:MIME-Version:List-Subscribe:List-Help: List-Post:List-Archive:List-Unsubscribe:List-Id: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=JOt959R1wRdTBlKDtCOInd7U040VcM0zuSH6+PHSrHk=; b=b861C0Lai8SrfE GHVAnXUOx1MJrVTydvq9NEVSqraSNXTMyBwBS5AzSePL9RcYxrRPqEQsw/bexmZG7X0E8L6TDLT79 deAEago/U8c9ylvdlg23gokFSo+FCQsYenG6EWvDAPzBK5lHmFr88CJ8AgHG0HW12RPCOcOVgMyIX 2Z2Yqz1E3ZUAMPko2x++V2Rt8kVLP+0VP3P5uZF/vId4EK0fZ7W2u7VA3LGD96Lpc/TOd6mWZmXwH MLw+Bmpk9zSQ+MYgIV+NxdQnXrj62pgCKEJ8WBEnmRQiL9qzyh60ZgOP1+7b5zmmZG3UHyl+5rAQQ uBi5LhQrz7GKs/4sTkUQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qRknd-00BP5D-2R; Fri, 04 Aug 2023 02:44:21 +0000 Received: from inva021.nxp.com ([92.121.34.21]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qRknS-00BOxm-05 for linux-arm-kernel@lists.infradead.org; Fri, 04 Aug 2023 02:44:11 +0000 Received: from inva021.nxp.com (localhost [127.0.0.1]) by inva021.eu-rdc02.nxp.com (Postfix) with ESMTP id A21F42013AE; Fri, 4 Aug 2023 04:44:08 +0200 (CEST) Received: from aprdc01srsp001v.ap-rdc01.nxp.com (aprdc01srsp001v.ap-rdc01.nxp.com [165.114.16.16]) by inva021.eu-rdc02.nxp.com (Postfix) with ESMTP id 32724201F1D; Fri, 4 Aug 2023 04:44:08 +0200 (CEST) Received: from localhost.localdomain (shlinux2.ap.freescale.net [10.192.224.44]) by aprdc01srsp001v.ap-rdc01.nxp.com (Postfix) with ESMTP id 8D7E9181D0E5; Fri, 4 Aug 2023 10:44:06 +0800 (+08) From: Richard Zhu To: frank.li@nxp.com, l.stach@pengutronix.de, shawnguo@kernel.org, lpieralisi@kernel.org, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org Cc: hongxing.zhu@nxp.com, linux-pci@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, kernel@pengutronix.de, linux-imx@nxp.com Subject: [PATCH v2 8/9] PCI: imx6: Add i.MX6SX PCIe EP support Date: Fri, 4 Aug 2023 10:09:34 +0800 Message-Id: <1691114975-4750-9-git-send-email-hongxing.zhu@nxp.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1691114975-4750-1-git-send-email-hongxing.zhu@nxp.com> References: <1691114975-4750-1-git-send-email-hongxing.zhu@nxp.com> X-Virus-Scanned: ClamAV using ClamSMTP X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230803_194410_331574_A22AB7E9 X-CRM114-Status: GOOD ( 11.42 ) 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: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Add the i.MX6SX PCIe EP support. Signed-off-by: Richard Zhu --- drivers/pci/controller/dwc/pci-imx6.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c index 9a6531ddfef2..43c5251f5160 100644 --- a/drivers/pci/controller/dwc/pci-imx6.c +++ b/drivers/pci/controller/dwc/pci-imx6.c @@ -48,6 +48,7 @@ enum imx6_pcie_variants { IMX6Q, IMX6Q_EP, IMX6SX, + IMX6SX_EP, IMX6QP, IMX6QP_EP, IMX7D, @@ -362,6 +363,7 @@ static void imx6_pcie_init_phy(struct imx6_pcie *imx6_pcie) IMX7D_GPR12_PCIE_PHY_REFCLK_SEL, 0); break; case IMX6SX: + case IMX6SX_EP: regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR12, IMX6SX_GPR12_PCIE_RX_EQ_MASK, IMX6SX_GPR12_PCIE_RX_EQ_2); @@ -560,6 +562,7 @@ static int imx6_pcie_enable_ref_clk(struct imx6_pcie *imx6_pcie) switch (imx6_pcie->drvdata->variant) { case IMX6SX: + case IMX6SX_EP: ret = clk_prepare_enable(imx6_pcie->pcie_inbound_axi); if (ret) { dev_err(dev, "unable to enable pcie_axi clock\n"); @@ -621,6 +624,7 @@ static void imx6_pcie_disable_ref_clk(struct imx6_pcie *imx6_pcie) { switch (imx6_pcie->drvdata->variant) { case IMX6SX: + case IMX6SX_EP: clk_disable_unprepare(imx6_pcie->pcie_inbound_axi); break; case IMX6QP: @@ -718,6 +722,7 @@ static void imx6_pcie_assert_core_reset(struct imx6_pcie *imx6_pcie) reset_control_assert(imx6_pcie->apps_reset); break; case IMX6SX: + case IMX6SX_EP: regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR12, IMX6SX_GPR12_PCIE_TEST_POWERDOWN, IMX6SX_GPR12_PCIE_TEST_POWERDOWN); @@ -782,6 +787,7 @@ static int imx6_pcie_deassert_core_reset(struct imx6_pcie *imx6_pcie) imx7d_pcie_wait_for_phy_pll_lock(imx6_pcie); break; case IMX6SX: + case IMX6SX_EP: regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR5, IMX6SX_GPR5_PCIE_BTNRST_RESET, 0); break; @@ -840,6 +846,7 @@ static void imx6_pcie_ltssm_enable(struct device *dev) case IMX6Q: case IMX6Q_EP: case IMX6SX: + case IMX6SX_EP: case IMX6QP: case IMX6QP_EP: regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR12, @@ -866,6 +873,7 @@ static void imx6_pcie_ltssm_disable(struct device *dev) case IMX6Q: case IMX6Q_EP: case IMX6SX: + case IMX6SX_EP: case IMX6QP: case IMX6QP_EP: regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR12, @@ -1198,6 +1206,7 @@ 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 IMX6SX_EP: case IMX6QP: case IMX6QP_EP: regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR12, @@ -1361,6 +1370,7 @@ static int imx6_pcie_probe(struct platform_device *pdev) switch (imx6_pcie->drvdata->variant) { case IMX6SX: + case IMX6SX_EP: imx6_pcie->pcie_inbound_axi = devm_clk_get(dev, "pcie_inbound_axi"); if (IS_ERR(imx6_pcie->pcie_inbound_axi)) @@ -1535,6 +1545,13 @@ static const struct imx6_pcie_drvdata drvdata[] = { IMX6_PCIE_FLAG_SUPPORTS_SUSPEND, .gpr = "fsl,imx6q-iomuxc-gpr", }, + [IMX6SX_EP] = { + .variant = IMX6SX_EP, + .mode = DW_PCIE_EP_TYPE, + .flags = IMX6_PCIE_FLAG_IMX6_PHY, + .gpr = "fsl,imx6q-iomuxc-gpr", + .epc_features = &imx6q_pcie_epc_features, + }, [IMX6QP] = { .variant = IMX6QP, .flags = IMX6_PCIE_FLAG_IMX6_PHY | @@ -1590,6 +1607,7 @@ static const struct of_device_id imx6_pcie_of_match[] = { { .compatible = "fsl,imx6q-pcie", .data = &drvdata[IMX6Q], }, { .compatible = "fsl,imx6q-pcie-ep", .data = &drvdata[IMX6Q_EP], }, { .compatible = "fsl,imx6sx-pcie", .data = &drvdata[IMX6SX], }, + { .compatible = "fsl,imx6sx-pcie-ep", .data = &drvdata[IMX6SX_EP], }, { .compatible = "fsl,imx6qp-pcie", .data = &drvdata[IMX6QP], }, { .compatible = "fsl,imx6qp-pcie-ep", .data = &drvdata[IMX6QP_EP], }, { .compatible = "fsl,imx7d-pcie", .data = &drvdata[IMX7D], },