From patchwork Thu Nov 18 01:54:48 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Richard Zhu X-Patchwork-Id: 12625855 X-Patchwork-Delegate: lorenzo.pieralisi@arm.com 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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id EE39AC4167E for ; Thu, 18 Nov 2021 02:21:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D666261ABF for ; Thu, 18 Nov 2021 02:21:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241574AbhKRCYz (ORCPT ); Wed, 17 Nov 2021 21:24:55 -0500 Received: from inva020.nxp.com ([92.121.34.13]:49852 "EHLO inva020.nxp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S242525AbhKRCYt (ORCPT ); Wed, 17 Nov 2021 21:24:49 -0500 Received: from inva020.nxp.com (localhost [127.0.0.1]) by inva020.eu-rdc02.nxp.com (Postfix) with ESMTP id C2CD41A3107; Thu, 18 Nov 2021 03:21:48 +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 8A18F1A2226; Thu, 18 Nov 2021 03:21:48 +0100 (CET) Received: from localhost.localdomain (shlinux2.ap.freescale.net [10.192.224.44]) by aprdc01srsp001v.ap-rdc01.nxp.com (Postfix) with ESMTP id 984D8183AD0B; Thu, 18 Nov 2021 10:21:46 +0800 (+08) From: Richard Zhu To: l.stach@pengutronix.de, bhelgaas@google.com, lorenzo.pieralisi@arm.com, marcel.ziswiler@toradex.com, tharvey@gateworks.com, kishon@ti.com, vkoul@kernel.org, robh@kernel.org, galak@kernel.crashing.org, shawnguo@kernel.org Cc: hongxing.zhu@nxp.com, linux-phy@lists.infradead.org, devicetree@vger.kernel.org, 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 v6 7/8] arm64: dts: imx8mm-evk: Add the pcie support on imx8mm evk board Date: Thu, 18 Nov 2021 09:54:48 +0800 Message-Id: <1637200489-11855-8-git-send-email-hongxing.zhu@nxp.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1637200489-11855-1-git-send-email-hongxing.zhu@nxp.com> References: <1637200489-11855-1-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 Add the PCIe support on iMX8MM EVK boards. And set the default reference clock mode. Signed-off-by: Richard Zhu Tested-by: Marcel Ziswiler Reviewed-by: Tim Harvey Tested-by: Tim Harvey --- arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi | 55 +++++++++++++++++++ 1 file changed, 55 insertions(+) diff --git a/arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi index e033d0257b5a..87a30daf0b3c 100644 --- a/arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi +++ b/arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi @@ -5,6 +5,7 @@ /dts-v1/; +#include #include #include "imx8mm.dtsi" @@ -30,6 +31,23 @@ status { }; }; + pcie0_refclk: pcie0-refclk { + compatible = "fixed-clock"; + #clock-cells = <0>; + clock-frequency = <100000000>; + }; + + reg_pcie0: regulator-pcie { + compatible = "regulator-fixed"; + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_pcie0_reg>; + regulator-name = "MPCIE_3V3"; + regulator-min-microvolt = <3300000>; + regulator-max-microvolt = <3300000>; + gpio = <&gpio1 5 GPIO_ACTIVE_HIGH>; + enable-active-high; + }; + reg_usdhc2_vmmc: regulator-usdhc2 { compatible = "regulator-fixed"; pinctrl-names = "default"; @@ -289,6 +307,30 @@ pca6416: gpio@20 { }; }; +&pcie_phy { + fsl,refclk-pad-mode = ; + fsl,tx-deemph-gen1 = <0x2d>; + fsl,tx-deemph-gen2 = <0xf>; + clocks = <&pcie0_refclk>; + status = "okay"; +}; + +&pcie0 { + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_pcie0>; + reset-gpio = <&gpio4 21 GPIO_ACTIVE_LOW>; + clocks = <&clk IMX8MM_CLK_PCIE1_ROOT>, <&clk IMX8MM_CLK_PCIE1_AUX>, + <&pcie0_refclk>; + clock-names = "pcie", "pcie_aux", "pcie_bus"; + assigned-clocks = <&clk IMX8MM_CLK_PCIE1_AUX>, + <&clk IMX8MM_CLK_PCIE1_CTRL>; + assigned-clock-rates = <10000000>, <250000000>; + assigned-clock-parents = <&clk IMX8MM_SYS_PLL2_50M>, + <&clk IMX8MM_SYS_PLL2_250M>; + vpcie-supply = <®_pcie0>; + status = "okay"; +}; + &sai3 { pinctrl-names = "default"; pinctrl-0 = <&pinctrl_sai3>; @@ -406,6 +448,19 @@ MX8MM_IOMUXC_I2C3_SDA_I2C3_SDA 0x400001c3 >; }; + pinctrl_pcie0: pcie0grp { + fsl,pins = < + MX8MM_IOMUXC_I2C4_SCL_PCIE1_CLKREQ_B 0x61 + MX8MM_IOMUXC_SAI2_RXFS_GPIO4_IO21 0x41 + >; + }; + + pinctrl_pcie0_reg: pcie0reggrp { + fsl,pins = < + MX8MM_IOMUXC_GPIO1_IO05_GPIO1_IO5 0x41 + >; + }; + pinctrl_pmic: pmicirqgrp { fsl,pins = < MX8MM_IOMUXC_GPIO1_IO03_GPIO1_IO3 0x141