From patchwork Thu Oct 28 07:27:10 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Richard Zhu X-Patchwork-Id: 12589487 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 050D7C433F5 for ; Thu, 28 Oct 2021 07:53:32 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id C796D610C7 for ; Thu, 28 Oct 2021 07:53:31 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org C796D610C7 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=nxp.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.infradead.org 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=sWiA8A8IzmLrrBsJDhbfDxJgmkB7CmStXmZ09R1hRoY=; b=w6fty1QTK4Mdql EBAorTFJbPS9lPncCRFUSBXUCjRAS7icuu06AJq0eZIMiAEvs3d97WhNwU7J8eI6Ru6RtBn2Jq8C3 zwPKfag/MvuqJfSqArXf7sgAqrHjI8RaZltqSad42h6GSKo+iOyE8+fq49hyjsess9525tn5UhSBt 6/BL3mpyhDCkDo5AWZHiqXYED3IbhDN2/p6WoeElSRtSNotA44qP5tA5FUqb/+MRoAoHUiijmCHty 9KYeNb9HdP/E0vXDHzWZ7XdNIsclCRbjqG6UafNdI59EIrGLFZp2RqIZSbCBeWOcWndp1wIfL/ygK OXZXFJjNglWRnjlU+XpQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1mg0E7-007AXz-9J; Thu, 28 Oct 2021 07:53:31 +0000 Received: from inva021.nxp.com ([92.121.34.21]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1mg0Df-007AKk-6o; Thu, 28 Oct 2021 07:53:04 +0000 Received: from inva021.nxp.com (localhost [127.0.0.1]) by inva021.eu-rdc02.nxp.com (Postfix) with ESMTP id 40C89200389; Thu, 28 Oct 2021 09:53:01 +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 0485F200388; Thu, 28 Oct 2021 09:53:01 +0200 (CEST) Received: from localhost.localdomain (shlinux2.ap.freescale.net [10.192.224.44]) by aprdc01srsp001v.ap-rdc01.nxp.com (Postfix) with ESMTP id B3158183AD0B; Thu, 28 Oct 2021 15:52:57 +0800 (+08) From: Richard Zhu To: l.stach@pengutronix.de, marcel.ziswiler@toradex.com, tharvey@gateworks.com, kishon@ti.com, vkoul@kernel.org, robh@kernel.org, galak@kernel.crashing.org, shawnguo@kernel.org Cc: linux-phy@lists.infradead.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, kernel@pengutronix.de, linux-imx@nxp.com, Richard Zhu Subject: [PATCH v4 1/8] dt-bindings: phy: phy-imx8-pcie: Add binding for the pad modes of imx8 pcie phy Date: Thu, 28 Oct 2021 15:27:10 +0800 Message-Id: <1635406037-20900-2-git-send-email-hongxing.zhu@nxp.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1635406037-20900-1-git-send-email-hongxing.zhu@nxp.com> References: <1635406037-20900-1-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-20211028_005303_412267_8389F003 X-CRM114-Status: UNSURE ( 9.45 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-phy@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux Phy Mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-phy" Errors-To: linux-phy-bounces+linux-phy=archiver.kernel.org@lists.infradead.org Add binding for reference clock PAD modes of the i.MX8 PCIe PHY. Signed-off-by: Richard Zhu Tested-by: Marcel Ziswiler --- include/dt-bindings/phy/phy-imx8-pcie.h | 14 ++++++++++++++ 1 file changed, 14 insertions(+) create mode 100644 include/dt-bindings/phy/phy-imx8-pcie.h diff --git a/include/dt-bindings/phy/phy-imx8-pcie.h b/include/dt-bindings/phy/phy-imx8-pcie.h new file mode 100644 index 000000000000..8bbe2d6538d8 --- /dev/null +++ b/include/dt-bindings/phy/phy-imx8-pcie.h @@ -0,0 +1,14 @@ +/* SPDX-License-Identifier: (GPL-2.0+ OR MIT) */ +/* + * This header provides constants for i.MX8 PCIe. + */ + +#ifndef _DT_BINDINGS_IMX8_PCIE_H +#define _DT_BINDINGS_IMX8_PCIE_H + +/* Reference clock PAD mode */ +#define IMX8_PCIE_REFCLK_PAD_UNUSED 0 +#define IMX8_PCIE_REFCLK_PAD_INPUT 1 +#define IMX8_PCIE_REFCLK_PAD_OUTPUT 2 + +#endif /* _DT_BINDINGS_IMX8_PCIE_H */ From patchwork Thu Oct 28 07:27:11 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Richard Zhu X-Patchwork-Id: 12589489 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 22206C433EF for ; Thu, 28 Oct 2021 07:53:54 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id CEE3060724 for ; Thu, 28 Oct 2021 07:53:53 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org CEE3060724 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=nxp.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.infradead.org 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=/6HRgPP05GGyjGWdcH0FdeKv3z3eSDa50cGJQraij/Q=; b=LrczjuC298qGyt RtlQ6CEYePXFA0ZQKxgCwSQx9I9ecEckDwK9u/sh1ZNNM5n+rqDdTqqrpvj6Iv5eYuRrG66na3PQc sHuiho4TzpDoaSiq30Il2pHyu2mkzG0knXiZ8SwoB104a15VmHizqsUuANn7OkXcIKpx0EeUKzOpj l1U4oaj6OrPMoaNrGmgUQUMFU+VveV/z+4rm7lKYerAOue01WMGVKQH+1aef8vQu03RbQQ3Zna7u8 6trVM4VGATMRwL4mdB3DxBSguZjtmW1h8nsmPIP2ZOgIWH2VyoHOdlupKeQnw37/yAoHeJBqv8TFm 2GKBsKpyG1TG/tqo570w==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1mg0ET-007AhK-BG; Thu, 28 Oct 2021 07:53:53 +0000 Received: from inva021.nxp.com ([92.121.34.21]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1mg0Dg-007ALU-Jp; Thu, 28 Oct 2021 07:53:06 +0000 Received: from inva021.nxp.com (localhost [127.0.0.1]) by inva021.eu-rdc02.nxp.com (Postfix) with ESMTP id 5E9A92003D6; Thu, 28 Oct 2021 09:53:03 +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 F0576200388; Thu, 28 Oct 2021 09:53:02 +0200 (CEST) Received: from localhost.localdomain (shlinux2.ap.freescale.net [10.192.224.44]) by aprdc01srsp001v.ap-rdc01.nxp.com (Postfix) with ESMTP id 90073183AC94; Thu, 28 Oct 2021 15:53:00 +0800 (+08) From: Richard Zhu To: l.stach@pengutronix.de, marcel.ziswiler@toradex.com, tharvey@gateworks.com, kishon@ti.com, vkoul@kernel.org, robh@kernel.org, galak@kernel.crashing.org, shawnguo@kernel.org Cc: linux-phy@lists.infradead.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, kernel@pengutronix.de, linux-imx@nxp.com, Richard Zhu Subject: [PATCH v4 2/8] dt-bindings: phy: Add imx8 pcie phy driver support Date: Thu, 28 Oct 2021 15:27:11 +0800 Message-Id: <1635406037-20900-3-git-send-email-hongxing.zhu@nxp.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1635406037-20900-1-git-send-email-hongxing.zhu@nxp.com> References: <1635406037-20900-1-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-20211028_005304_971302_3A03D803 X-CRM114-Status: GOOD ( 12.20 ) X-BeenThere: linux-phy@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux Phy Mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-phy" Errors-To: linux-phy-bounces+linux-phy=archiver.kernel.org@lists.infradead.org Add dt-binding for the standalone i.MX8 PCIe PHY driver. Signed-off-by: Richard Zhu Tested-by: Marcel Ziswiler --- .../bindings/phy/fsl,imx8-pcie-phy.yaml | 95 +++++++++++++++++++ 1 file changed, 95 insertions(+) create mode 100644 Documentation/devicetree/bindings/phy/fsl,imx8-pcie-phy.yaml diff --git a/Documentation/devicetree/bindings/phy/fsl,imx8-pcie-phy.yaml b/Documentation/devicetree/bindings/phy/fsl,imx8-pcie-phy.yaml new file mode 100644 index 000000000000..b9f89e343b0b --- /dev/null +++ b/Documentation/devicetree/bindings/phy/fsl,imx8-pcie-phy.yaml @@ -0,0 +1,95 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/phy/fsl,imx8-pcie-phy.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Freescale i.MX8 SoC series PCIe PHY Device Tree Bindings + +maintainers: + - Richard Zhu + +properties: + "#phy-cells": + const: 0 + + compatible: + enum: + - fsl,imx8mm-pcie-phy + + reg: + maxItems: 1 + + clocks: + items: + - description: PHY module clock + + clock-names: + items: + - const: ref + + resets: + items: + - description: Phandles to PCIe-related reset lines exposed by SRC + IP block. + + reset-names: + items: + - const: pciephy + + fsl,refclk-pad-mode: + description: | + Specifies the mode of the refclk pad used. It can be UNUSED(PHY + refclock is derived from SoC internal source), INPUT(PHY refclock + is provided externally via the refclk pad) or OUTPUT(PHY refclock + is derived from SoC internal source and provided on the refclk pad). + Refer include/dt-bindings/phy/phy-imx8-pcie.h for the constants + to be used. + $ref: /schemas/types.yaml#/definitions/uint32 + enum: [ 0, 1, 2 ] + + fsl,tx-deemph-gen1: + description: Gen1 De-emphasis value (optional required). + $ref: /schemas/types.yaml#/definitions/uint32 + default: 0 + + fsl,tx-deemph-gen2: + description: Gen2 De-emphasis value (optional required). + $ref: /schemas/types.yaml#/definitions/uint32 + default: 0 + + fsl,clkreq-unsupported: + type: boolean + description: A boolean property indicating the CLKREQ# signal is + not supported in the board design (optional) + +required: + - "#phy-cells" + - compatible + - reg + - clocks + - clock-names + - fsl,refclk-pad-mode + +additionalProperties: false + +examples: + - | + #include + #include + #include + + pcie_phy: pcie-phy@32f00000 { + compatible = "fsl,imx8mm-pcie-phy"; + reg = <0x32f00000 0x10000>; + clocks = <&clk IMX8MM_CLK_PCIE1_PHY>; + clock-names = "ref"; + assigned-clocks = <&clk IMX8MM_CLK_PCIE1_PHY>; + assigned-clock-rates = <100000000>; + assigned-clock-parents = <&clk IMX8MM_SYS_PLL2_100M>; + resets = <&src IMX8MQ_RESET_PCIEPHY>; + reset-names = "pciephy"; + fsl,refclk-pad-mode = ; + #phy-cells = <0>; + }; +... From patchwork Thu Oct 28 07:27:12 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Richard Zhu X-Patchwork-Id: 12589491 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 A9417C433EF for ; Thu, 28 Oct 2021 07:54:16 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 6F49960724 for ; Thu, 28 Oct 2021 07:54:16 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 6F49960724 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=nxp.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.infradead.org 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=wrCqI4ysKj5MTaDrEyFensMUyAFV1V4/MSYJ9KTtKHU=; b=v8bUk23zRlY+h5 vAzxqBJxJ5qm2gwYLr1ivXdyajGmGGRwj92bXJ4URMmiF6hgcE8DWXaibm7C+tiWDJ+Ze8Pu2uf4T COEh0vsYhKFnaQ36Zodk4MZBh81w6ssLTh9dUk+IF6PVOboybTeM0TglhAvQ7arXKM/hm2RFwZkwK UHaoYcYvjCiNdFR+WZpVr87P4cUezhr7QOoPq/6WdvoPyV72XagyUWPgmqpVyWy6422O5UFvGQOEO YR4WyjhjN+PU3h1hzWbCMZFWQBBeq9rIs4lBg8r2iPfhbJpYl8Hq4P5mzUqVInlsyhtg1JI5v/lZ1 9w7pzW0oXKUzLXBbZrqA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1mg0Ep-007ArS-Rd; Thu, 28 Oct 2021 07:54:15 +0000 Received: from inva021.nxp.com ([92.121.34.21]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1mg0Di-007AMZ-JC; Thu, 28 Oct 2021 07:53:08 +0000 Received: from inva021.nxp.com (localhost [127.0.0.1]) by inva021.eu-rdc02.nxp.com (Postfix) with ESMTP id 54298200399; Thu, 28 Oct 2021 09:53:05 +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 1BFD9200388; Thu, 28 Oct 2021 09:53:05 +0200 (CEST) Received: from localhost.localdomain (shlinux2.ap.freescale.net [10.192.224.44]) by aprdc01srsp001v.ap-rdc01.nxp.com (Postfix) with ESMTP id 87820183AC8B; Thu, 28 Oct 2021 15:53:02 +0800 (+08) From: Richard Zhu To: l.stach@pengutronix.de, marcel.ziswiler@toradex.com, tharvey@gateworks.com, kishon@ti.com, vkoul@kernel.org, robh@kernel.org, galak@kernel.crashing.org, shawnguo@kernel.org Cc: linux-phy@lists.infradead.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, kernel@pengutronix.de, linux-imx@nxp.com, Richard Zhu Subject: [PATCH v4 3/8] dt-bindings: imx6q-pcie: Add PHY phandles and name properties Date: Thu, 28 Oct 2021 15:27:12 +0800 Message-Id: <1635406037-20900-4-git-send-email-hongxing.zhu@nxp.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1635406037-20900-1-git-send-email-hongxing.zhu@nxp.com> References: <1635406037-20900-1-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-20211028_005306_829608_2E53C4BD X-CRM114-Status: UNSURE ( 7.39 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-phy@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux Phy Mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-phy" Errors-To: linux-phy-bounces+linux-phy=archiver.kernel.org@lists.infradead.org i.MX8MM PCIe has the PHY. Add a PHY phandle and name properties in the binding document. Signed-off-by: Richard Zhu Tested-by: Marcel Ziswiler --- Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.yaml | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.yaml b/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.yaml index 2911e565b260..46b5446f5791 100644 --- a/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.yaml +++ b/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.yaml @@ -128,6 +128,12 @@ properties: enum: [1, 2, 3, 4] default: 1 + phys: + maxItems: 1 + + phy-names: + const: pcie-phy + reset-gpio: description: Should specify the GPIO for controlling the PCI bus device reset signal. It's not polarity aware and defaults to active-low reset From patchwork Thu Oct 28 07:27:13 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Richard Zhu X-Patchwork-Id: 12589493 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 D6AD0C433FE for ; Thu, 28 Oct 2021 07:54:34 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id A28A5610C7 for ; Thu, 28 Oct 2021 07:54:34 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org A28A5610C7 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=nxp.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.infradead.org 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=B58Vh9DEc3GoX6rtWBopQoF6X4zxHJtMv7eyrQ/UgUs=; b=xLqVhSxgvc7Bs/ iqHm+NUwUeyHfaE9mBlMRHcoXxs1QLqvW/s/d3pVSPYhxhYDdnIvAjv3IxynbSqWE3/wqA35nEmql +bsnpqlVsoFSqyfy6u3AbsTAdVXEDDp8OuWoc//bv6APNi89KeWiNVP9J9zyfKhbDnl5PwCiuGGIB 3F6qN57fAncPg7pg3NQf9b1qqkbTB31IwP9B2GxxUW6u3TY+Uv7ccEbNnUGZ2I04Ywv6vCae7w2tC 6W+SP1aflzbVrKbzWBJMF73MBBPxSAM9H6LZVW6KySOQOiIFUGpLhJBl6iIe3SFzj1Chjcj1FI/f4 5Tm/2qGUzffkVAyfBNMg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1mg0F8-007B15-3H; Thu, 28 Oct 2021 07:54:34 +0000 Received: from inva021.nxp.com ([92.121.34.21]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1mg0Dk-007ANp-R7; Thu, 28 Oct 2021 07:53:10 +0000 Received: from inva021.nxp.com (localhost [127.0.0.1]) by inva021.eu-rdc02.nxp.com (Postfix) with ESMTP id 724BB200388; Thu, 28 Oct 2021 09:53:07 +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 3ADE6200389; Thu, 28 Oct 2021 09:53:07 +0200 (CEST) Received: from localhost.localdomain (shlinux2.ap.freescale.net [10.192.224.44]) by aprdc01srsp001v.ap-rdc01.nxp.com (Postfix) with ESMTP id ABE95183AC94; Thu, 28 Oct 2021 15:53:04 +0800 (+08) From: Richard Zhu To: l.stach@pengutronix.de, marcel.ziswiler@toradex.com, tharvey@gateworks.com, kishon@ti.com, vkoul@kernel.org, robh@kernel.org, galak@kernel.crashing.org, shawnguo@kernel.org Cc: linux-phy@lists.infradead.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, kernel@pengutronix.de, linux-imx@nxp.com, Richard Zhu Subject: [PATCH v4 4/8] arm64: dts: imx8mm: Add the pcie phy support Date: Thu, 28 Oct 2021 15:27:13 +0800 Message-Id: <1635406037-20900-5-git-send-email-hongxing.zhu@nxp.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1635406037-20900-1-git-send-email-hongxing.zhu@nxp.com> References: <1635406037-20900-1-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-20211028_005309_069394_B479D75C X-CRM114-Status: UNSURE ( 7.18 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-phy@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux Phy Mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-phy" Errors-To: linux-phy-bounces+linux-phy=archiver.kernel.org@lists.infradead.org Add the PCIe PHY support on iMX8MM platforms. Signed-off-by: Richard Zhu Tested-by: Marcel Ziswiler --- arch/arm64/boot/dts/freescale/imx8mm.dtsi | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/arch/arm64/boot/dts/freescale/imx8mm.dtsi b/arch/arm64/boot/dts/freescale/imx8mm.dtsi index c2f3f118f82e..0844f3144887 100644 --- a/arch/arm64/boot/dts/freescale/imx8mm.dtsi +++ b/arch/arm64/boot/dts/freescale/imx8mm.dtsi @@ -1135,6 +1135,19 @@ usbmisc2: usbmisc@32e50200 { reg = <0x32e50200 0x200>; }; + pcie_phy: pcie-phy@32f00000 { + compatible = "fsl,imx8mm-pcie-phy"; + reg = <0x32f00000 0x10000>; + clocks = <&clk IMX8MM_CLK_PCIE1_PHY>; + clock-names = "ref"; + assigned-clocks = <&clk IMX8MM_CLK_PCIE1_PHY>; + assigned-clock-rates = <100000000>; + assigned-clock-parents = <&clk IMX8MM_SYS_PLL2_100M>; + resets = <&src IMX8MQ_RESET_PCIEPHY>; + reset-names = "pciephy"; + #phy-cells = <0>; + status = "disabled"; + }; }; dma_apbh: dma-controller@33000000 { From patchwork Thu Oct 28 07:27:14 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Richard Zhu X-Patchwork-Id: 12589495 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 39968C433EF for ; Thu, 28 Oct 2021 07:54:55 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id EC8D161040 for ; Thu, 28 Oct 2021 07:54:54 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org EC8D161040 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=nxp.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.infradead.org 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=URrGB9Np6RGXHEQD2jmhgvXDjPxc4F6Thn/NDxd3cMU=; b=35eeXhnOg+g5AI Vsw1x4P0e14J1KkjtZ94VNYq7V13hyDuCFLyxFsCMP7og44VcGCQXoE/2dHpv41GRFfiAo6D9lld0 l7H5KapKEdWgkjsATKiLFCqAyiCXVT/oPnFo/wf1otOPjekUsOvvQRwGNLh2b9V0NW0ZstGiHEYpj ZTCQZX5VerLPtjFlffleaEahZyMxjXfWy5XVJWjC7ZatqQcTnm5o/iHg8TulnzQOY6d3ummiYA+OE MMxPmdjvxAiX8qA0iNgJvCw6Mat544P2J1xcV7jb9sWYdw5eqiFBDxr6cKiadtwVEIvcDhqnAuDoT jIYKY4UQsCvofitGXIxA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1mg0FS-007BDB-Ef; Thu, 28 Oct 2021 07:54:54 +0000 Received: from inva020.nxp.com ([92.121.34.13]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1mg0Dn-007AOu-3G; Thu, 28 Oct 2021 07:53:13 +0000 Received: from inva020.nxp.com (localhost [127.0.0.1]) by inva020.eu-rdc02.nxp.com (Postfix) with ESMTP id D2C351A0256; Thu, 28 Oct 2021 09:53:09 +0200 (CEST) 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 6DC2B1A01F0; Thu, 28 Oct 2021 09:53:09 +0200 (CEST) Received: from localhost.localdomain (shlinux2.ap.freescale.net [10.192.224.44]) by aprdc01srsp001v.ap-rdc01.nxp.com (Postfix) with ESMTP id DE94B183AC8B; Thu, 28 Oct 2021 15:53:06 +0800 (+08) From: Richard Zhu To: l.stach@pengutronix.de, marcel.ziswiler@toradex.com, tharvey@gateworks.com, kishon@ti.com, vkoul@kernel.org, robh@kernel.org, galak@kernel.crashing.org, shawnguo@kernel.org Cc: linux-phy@lists.infradead.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, kernel@pengutronix.de, linux-imx@nxp.com, Richard Zhu Subject: [PATCH v4 5/8] phy: freescale: pcie: Initialize the imx8 pcie standalone phy driver Date: Thu, 28 Oct 2021 15:27:14 +0800 Message-Id: <1635406037-20900-6-git-send-email-hongxing.zhu@nxp.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1635406037-20900-1-git-send-email-hongxing.zhu@nxp.com> References: <1635406037-20900-1-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-20211028_005311_455720_196A9508 X-CRM114-Status: GOOD ( 21.06 ) X-BeenThere: linux-phy@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux Phy Mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-phy" Errors-To: linux-phy-bounces+linux-phy=archiver.kernel.org@lists.infradead.org Add the standalone i.MX8 PCIe PHY driver. Signed-off-by: Richard Zhu Tested-by: Marcel Ziswiler --- drivers/phy/freescale/Kconfig | 9 + drivers/phy/freescale/Makefile | 1 + drivers/phy/freescale/phy-fsl-imx8m-pcie.c | 234 +++++++++++++++++++++ 3 files changed, 244 insertions(+) create mode 100644 drivers/phy/freescale/phy-fsl-imx8m-pcie.c diff --git a/drivers/phy/freescale/Kconfig b/drivers/phy/freescale/Kconfig index 320630ffe3cd..de9ee7020f76 100644 --- a/drivers/phy/freescale/Kconfig +++ b/drivers/phy/freescale/Kconfig @@ -14,3 +14,12 @@ config PHY_MIXEL_MIPI_DPHY help Enable this to add support for the Mixel DSI PHY as found on NXP's i.MX8 family of SOCs. + +config PHY_FSL_IMX8M_PCIE + tristate "Freescale i.MX8 PCIE PHY" + depends on OF && HAS_IOMEM + select GENERIC_PHY + default ARCH_MXC && ARM64 + help + Enable this to add support for the PCIE PHY as found on + i.MX8M family of SOCs. diff --git a/drivers/phy/freescale/Makefile b/drivers/phy/freescale/Makefile index 1d02e3869b45..55d07c742ab0 100644 --- a/drivers/phy/freescale/Makefile +++ b/drivers/phy/freescale/Makefile @@ -1,3 +1,4 @@ # SPDX-License-Identifier: GPL-2.0-only obj-$(CONFIG_PHY_FSL_IMX8MQ_USB) += phy-fsl-imx8mq-usb.o obj-$(CONFIG_PHY_MIXEL_MIPI_DPHY) += phy-fsl-imx8-mipi-dphy.o +obj-$(CONFIG_PHY_FSL_IMX8M_PCIE) += phy-fsl-imx8m-pcie.o diff --git a/drivers/phy/freescale/phy-fsl-imx8m-pcie.c b/drivers/phy/freescale/phy-fsl-imx8m-pcie.c new file mode 100644 index 000000000000..4b4402eaddcc --- /dev/null +++ b/drivers/phy/freescale/phy-fsl-imx8m-pcie.c @@ -0,0 +1,234 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright 2021 NXP + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define IMX8MM_PCIE_PHY_CMN_REG061 0x184 +#define ANA_PLL_CLK_OUT_TO_EXT_IO_EN BIT(0) +#define IMX8MM_PCIE_PHY_CMN_REG062 0x188 +#define ANA_PLL_CLK_OUT_TO_EXT_IO_SEL BIT(3) +#define IMX8MM_PCIE_PHY_CMN_REG063 0x18C +#define AUX_PLL_REFCLK_SEL_SYS_PLL GENMASK(7, 6) +#define IMX8MM_PCIE_PHY_CMN_REG064 0x190 +#define ANA_AUX_RX_TX_SEL_TX BIT(7) +#define ANA_AUX_RX_TERM_GND_EN BIT(3) +#define ANA_AUX_TX_TERM BIT(2) +#define IMX8MM_PCIE_PHY_CMN_REG065 0x194 +#define ANA_AUX_RX_TERM (BIT(7) | BIT(4)) +#define ANA_AUX_TX_LVL GENMASK(3, 0) +#define IMX8MM_PCIE_PHY_CMN_REG75 0x1D4 +#define PCIE_PHY_CMN_REG75_PLL_DONE 0x3 +#define PCIE_PHY_TRSV_REG5 0x414 +#define PCIE_PHY_TRSV_REG5_GEN1_DEEMP 0x2D +#define PCIE_PHY_TRSV_REG6 0x418 +#define PCIE_PHY_TRSV_REG6_GEN2_DEEMP 0xF + +#define IMX8MM_GPR_PCIE_REF_CLK_SEL GENMASK(25, 24) +#define IMX8MM_GPR_PCIE_REF_CLK_PLL FIELD_PREP(IMX8MM_GPR_PCIE_REF_CLK_SEL, 0x3) +#define IMX8MM_GPR_PCIE_REF_CLK_EXT FIELD_PREP(IMX8MM_GPR_PCIE_REF_CLK_SEL, 0x2) +#define IMX8MM_GPR_PCIE_AUX_EN BIT(19) +#define IMX8MM_GPR_PCIE_CMN_RST BIT(18) +#define IMX8MM_GPR_PCIE_POWER_OFF BIT(17) +#define IMX8MM_GPR_PCIE_SSC_EN BIT(16) +#define IMX8MM_GPR_PCIE_AUX_EN_OVERRIDE BIT(9) + +struct imx8_pcie_phy { + void __iomem *base; + struct clk *clk; + struct phy *phy; + struct regmap *iomuxc_gpr; + struct reset_control *reset; + u32 refclk_pad_mode; + u32 tx_deemph_gen1; + u32 tx_deemph_gen2; + bool clkreq_unused; +}; + +static int imx8_pcie_phy_init(struct phy *phy) +{ + int ret; + u32 val, pad_mode; + struct imx8_pcie_phy *imx8_phy = phy_get_drvdata(phy); + + reset_control_assert(imx8_phy->reset); + + pad_mode = imx8_phy->refclk_pad_mode; + /* Set AUX_EN_OVERRIDE 1'b0, when the CLKREQ# isn't hooked */ + regmap_update_bits(imx8_phy->iomuxc_gpr, IOMUXC_GPR14, + IMX8MM_GPR_PCIE_AUX_EN_OVERRIDE, + imx8_phy->clkreq_unused ? + 0 : IMX8MM_GPR_PCIE_AUX_EN_OVERRIDE); + regmap_update_bits(imx8_phy->iomuxc_gpr, IOMUXC_GPR14, + IMX8MM_GPR_PCIE_AUX_EN, + pad_mode == IMX8_PCIE_REFCLK_PAD_INPUT ? + IMX8MM_GPR_PCIE_AUX_EN : 0); + regmap_update_bits(imx8_phy->iomuxc_gpr, IOMUXC_GPR14, + IMX8MM_GPR_PCIE_POWER_OFF, 0); + regmap_update_bits(imx8_phy->iomuxc_gpr, IOMUXC_GPR14, + IMX8MM_GPR_PCIE_SSC_EN, 0); + + regmap_update_bits(imx8_phy->iomuxc_gpr, IOMUXC_GPR14, + IMX8MM_GPR_PCIE_REF_CLK_SEL, + pad_mode == IMX8_PCIE_REFCLK_PAD_INPUT ? + IMX8MM_GPR_PCIE_REF_CLK_EXT : + IMX8MM_GPR_PCIE_REF_CLK_PLL); + usleep_range(100, 200); + + /* Do the PHY common block reset */ + regmap_update_bits(imx8_phy->iomuxc_gpr, IOMUXC_GPR14, + IMX8MM_GPR_PCIE_CMN_RST, + IMX8MM_GPR_PCIE_CMN_RST); + usleep_range(200, 500); + + + if (pad_mode == IMX8_PCIE_REFCLK_PAD_INPUT) { + /* Configure the pad as input */ + val = readl(imx8_phy->base + IMX8MM_PCIE_PHY_CMN_REG061); + writel(val & ~ANA_PLL_CLK_OUT_TO_EXT_IO_EN, + imx8_phy->base + IMX8MM_PCIE_PHY_CMN_REG061); + } else if (pad_mode == IMX8_PCIE_REFCLK_PAD_OUTPUT) { + /* Configure the PHY to output the refclock via pad */ + writel(ANA_PLL_CLK_OUT_TO_EXT_IO_EN, + imx8_phy->base + IMX8MM_PCIE_PHY_CMN_REG061); + writel(ANA_PLL_CLK_OUT_TO_EXT_IO_SEL, + imx8_phy->base + IMX8MM_PCIE_PHY_CMN_REG062); + writel(AUX_PLL_REFCLK_SEL_SYS_PLL, + imx8_phy->base + IMX8MM_PCIE_PHY_CMN_REG063); + val = ANA_AUX_RX_TX_SEL_TX | ANA_AUX_TX_TERM; + writel(val | ANA_AUX_RX_TERM_GND_EN, + imx8_phy->base + IMX8MM_PCIE_PHY_CMN_REG064); + writel(ANA_AUX_RX_TERM | ANA_AUX_TX_LVL, + imx8_phy->base + IMX8MM_PCIE_PHY_CMN_REG065); + } + + /* Tune PHY de-emphasis setting to pass PCIe compliance. */ + writel(imx8_phy->tx_deemph_gen1, imx8_phy->base + PCIE_PHY_TRSV_REG5); + writel(imx8_phy->tx_deemph_gen2, imx8_phy->base + PCIE_PHY_TRSV_REG6); + + reset_control_deassert(imx8_phy->reset); + + /* Polling to check the phy is ready or not. */ + ret = readl_poll_timeout(imx8_phy->base + IMX8MM_PCIE_PHY_CMN_REG75, + val, val == PCIE_PHY_CMN_REG75_PLL_DONE, + 10, 20000); + return ret; +} + +static int imx8_pcie_phy_power_on(struct phy *phy) +{ + struct imx8_pcie_phy *imx8_phy = phy_get_drvdata(phy); + + return clk_prepare_enable(imx8_phy->clk); +} + +static int imx8_pcie_phy_power_off(struct phy *phy) +{ + struct imx8_pcie_phy *imx8_phy = phy_get_drvdata(phy); + + clk_disable_unprepare(imx8_phy->clk); + + return 0; +} + +static const struct phy_ops imx8_pcie_phy_ops = { + .init = imx8_pcie_phy_init, + .power_on = imx8_pcie_phy_power_on, + .power_off = imx8_pcie_phy_power_off, + .owner = THIS_MODULE, +}; + +static int imx8_pcie_phy_probe(struct platform_device *pdev) +{ + struct phy_provider *phy_provider; + struct device *dev = &pdev->dev; + struct device_node *np = dev->of_node; + struct imx8_pcie_phy *imx8_phy; + struct resource *res; + + imx8_phy = devm_kzalloc(dev, sizeof(*imx8_phy), GFP_KERNEL); + if (!imx8_phy) + return -ENOMEM; + + /* get PHY refclk pad mode */ + of_property_read_u32(np, "fsl,refclk-pad-mode", + &imx8_phy->refclk_pad_mode); + + if (of_property_read_u32(np, "fsl,tx-deemph-gen1", + &imx8_phy->tx_deemph_gen1)) + imx8_phy->tx_deemph_gen1 = 0; + + if (of_property_read_u32(np, "fsl,tx-deemph-gen2", + &imx8_phy->tx_deemph_gen2)) + imx8_phy->tx_deemph_gen2 = 0; + + if (of_property_read_bool(np, "fsl,clkreq-unsupported")) + imx8_phy->clkreq_unused = true; + else + imx8_phy->clkreq_unused = false; + + imx8_phy->clk = devm_clk_get(dev, "ref"); + if (IS_ERR(imx8_phy->clk)) { + dev_err(dev, "failed to get imx pcie phy clock\n"); + return PTR_ERR(imx8_phy->clk); + } + + /* Grab GPR config register range */ + imx8_phy->iomuxc_gpr = + syscon_regmap_lookup_by_compatible("fsl,imx6q-iomuxc-gpr"); + if (IS_ERR(imx8_phy->iomuxc_gpr)) { + dev_err(dev, "unable to find iomuxc registers\n"); + return PTR_ERR(imx8_phy->iomuxc_gpr); + } + + imx8_phy->reset = devm_reset_control_get_exclusive(dev, "pciephy"); + if (IS_ERR(imx8_phy->reset)) { + dev_err(dev, "Failed to get PCIEPHY reset control\n"); + return PTR_ERR(imx8_phy->reset); + } + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + imx8_phy->base = devm_ioremap_resource(dev, res); + if (IS_ERR(imx8_phy->base)) + return PTR_ERR(imx8_phy->base); + + imx8_phy->phy = devm_phy_create(dev, NULL, &imx8_pcie_phy_ops); + if (IS_ERR(imx8_phy->phy)) + return PTR_ERR(imx8_phy->phy); + + phy_set_drvdata(imx8_phy->phy, imx8_phy); + + phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate); + + return PTR_ERR_OR_ZERO(phy_provider); +} + +static const struct of_device_id imx8_pcie_phy_of_match[] = { + {.compatible = "fsl,imx8mm-pcie-phy",}, + { }, +}; +MODULE_DEVICE_TABLE(of, imx8_pcie_phy_of_match); + +static struct platform_driver imx8_pcie_phy_driver = { + .probe = imx8_pcie_phy_probe, + .driver = { + .name = "imx8-pcie-phy", + .of_match_table = imx8_pcie_phy_of_match, + } +}; +module_platform_driver(imx8_pcie_phy_driver); + +MODULE_DESCRIPTION("FSL IMX8 PCIE PHY driver"); +MODULE_LICENSE("GPL"); From patchwork Thu Oct 28 07:27:15 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Richard Zhu X-Patchwork-Id: 12589497 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 74F92C433EF for ; Thu, 28 Oct 2021 07:55:10 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 45A59610C7 for ; Thu, 28 Oct 2021 07:55:10 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 45A59610C7 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=nxp.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.infradead.org 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=nJ2PIKXy21k6MWZuhRbmEzIQmz52e3EpQ3dAaMpaiBg=; b=rnqlsaJVi6AzNB L5tvJk8XZV2IMattXLj0IedAAXfLaFxhZ8aGq/s1tbD67hbFM+JV1aYK0b+vNXmnlNkvKbXC6jVdr dmtgf2hXvPy7p/dBO/gOd7yJ2zs0VW0B2rnBXiq9giwSJJDwIEch+nJyVK6thAuB4RIeQWQ3BciA4 NkwC+l6LZsLWW3skwBxOS9TuJm6TRk5YyJYpCRx9lj6ZNiVfgskmsB6+t7s7a+UMpkz2ZrBCKKC3Q LPXpLtYX3BNiEEaoH2FrClv728G8patzZbm6lwfGaw73Bz69QrVM55yiZWLDG9lC36w2xD/L75qXW PTyG96AtynC8eHXRjVJQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1mg0Fh-007BLV-PC; Thu, 28 Oct 2021 07:55:09 +0000 Received: from inva020.nxp.com ([92.121.34.13]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1mg0Do-007APf-Hm; Thu, 28 Oct 2021 07:53:14 +0000 Received: from inva020.nxp.com (localhost [127.0.0.1]) by inva020.eu-rdc02.nxp.com (Postfix) with ESMTP id 505D11A01F0; Thu, 28 Oct 2021 09:53:11 +0200 (CEST) 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 17D211A1E1C; Thu, 28 Oct 2021 09:53:11 +0200 (CEST) Received: from localhost.localdomain (shlinux2.ap.freescale.net [10.192.224.44]) by aprdc01srsp001v.ap-rdc01.nxp.com (Postfix) with ESMTP id 084C6183AC94; Thu, 28 Oct 2021 15:53:08 +0800 (+08) From: Richard Zhu To: l.stach@pengutronix.de, marcel.ziswiler@toradex.com, tharvey@gateworks.com, kishon@ti.com, vkoul@kernel.org, robh@kernel.org, galak@kernel.crashing.org, shawnguo@kernel.org Cc: linux-phy@lists.infradead.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, kernel@pengutronix.de, linux-imx@nxp.com, Richard Zhu Subject: [PATCH v4 6/8] arm64: dts: imx8mm: Add the pcie support Date: Thu, 28 Oct 2021 15:27:15 +0800 Message-Id: <1635406037-20900-7-git-send-email-hongxing.zhu@nxp.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1635406037-20900-1-git-send-email-hongxing.zhu@nxp.com> References: <1635406037-20900-1-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-20211028_005312_756112_4064316A X-CRM114-Status: UNSURE ( 9.30 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-phy@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux Phy Mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-phy" Errors-To: linux-phy-bounces+linux-phy=archiver.kernel.org@lists.infradead.org Add the PCIe support on i.MX8MM platforms. Signed-off-by: Richard Zhu Tested-by: Marcel Ziswiler --- arch/arm64/boot/dts/freescale/imx8mm.dtsi | 33 ++++++++++++++++++++++- 1 file changed, 32 insertions(+), 1 deletion(-) diff --git a/arch/arm64/boot/dts/freescale/imx8mm.dtsi b/arch/arm64/boot/dts/freescale/imx8mm.dtsi index 0844f3144887..75f4317215ac 100644 --- a/arch/arm64/boot/dts/freescale/imx8mm.dtsi +++ b/arch/arm64/boot/dts/freescale/imx8mm.dtsi @@ -520,7 +520,7 @@ iomuxc: pinctrl@30330000 { }; gpr: iomuxc-gpr@30340000 { - compatible = "fsl,imx8mm-iomuxc-gpr", "syscon"; + compatible = "fsl,imx8mm-iomuxc-gpr", "fsl,imx6q-iomuxc-gpr", "syscon"; reg = <0x30340000 0x10000>; }; @@ -1179,6 +1179,37 @@ gpmi: nand-controller@33002000{ status = "disabled"; }; + pcie0: pcie@33800000 { + compatible = "fsl,imx8mm-pcie"; + reg = <0x33800000 0x400000>, <0x1ff00000 0x80000>; + reg-names = "dbi", "config"; + #address-cells = <3>; + #size-cells = <2>; + device_type = "pci"; + bus-range = <0x00 0xff>; + ranges = <0x81000000 0 0x00000000 0x1ff80000 0 0x00010000 /* downstream I/O 64KB */ + 0x82000000 0 0x18000000 0x18000000 0 0x07f00000>; /* non-prefetchable memory */ + num-lanes = <1>; + num-viewport = <4>; + interrupts = ; + interrupt-names = "msi"; + #interrupt-cells = <1>; + interrupt-map-mask = <0 0 0 0x7>; + interrupt-map = <0 0 0 1 &gic GIC_SPI 125 IRQ_TYPE_LEVEL_HIGH>, + <0 0 0 2 &gic GIC_SPI 124 IRQ_TYPE_LEVEL_HIGH>, + <0 0 0 3 &gic GIC_SPI 123 IRQ_TYPE_LEVEL_HIGH>, + <0 0 0 4 &gic GIC_SPI 122 IRQ_TYPE_LEVEL_HIGH>; + fsl,max-link-speed = <2>; + linux,pci-domain = <0>; + power-domains = <&pgc_pcie>; + resets = <&src IMX8MQ_RESET_PCIE_CTRL_APPS_EN>, + <&src IMX8MQ_RESET_PCIE_CTRL_APPS_TURNOFF>; + reset-names = "apps", "turnoff"; + phys = <&pcie_phy>; + phy-names = "pcie-phy"; + status = "disabled"; + }; + gpu_3d: gpu@38000000 { compatible = "vivante,gc"; reg = <0x38000000 0x8000>; From patchwork Thu Oct 28 07:27:16 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Richard Zhu X-Patchwork-Id: 12589499 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 72CAFC433F5 for ; Thu, 28 Oct 2021 07:55:27 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 310F961040 for ; Thu, 28 Oct 2021 07:55:27 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 310F961040 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=nxp.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.infradead.org 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=d2TM7zepgUhtI0WdcEYxom3iHAPhkvMV09fb3l84uYw=; b=pj4wjSFX1dQiNu nQMR8DNphjK3zvrEE2zAYrj082j85FDj8XUK4NvsZ6fKKodSOgn8CXRyazUJdP11F4DGtQN9Gp6Aj tnAbK0FWELAcI86iu+U5upD+n8A0dNsMH1cBULCZqbTMmY7xFMgz7mxtS1DNprMv/9dzkeARV9JQe 0GT6djUyUKukNitXiw7aNHwuvl1cGboBcmT7v4l+vHPK0sesSJy7bkFCXE4du89iIfraqznIf4WU4 f8qRDBtInAX8rLEqv+GQCTxxOlWZZlVvD96Z7uODyJh1qVMDiBPrtGvLTa8exbHeuqRnKr1/VPoML DEGKj3+6NqL2tSO222VA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1mg0Fy-007BUM-Ku; Thu, 28 Oct 2021 07:55:26 +0000 Received: from inva020.nxp.com ([92.121.34.13]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1mg0Dq-007AQY-Ds; Thu, 28 Oct 2021 07:53:16 +0000 Received: from inva020.nxp.com (localhost [127.0.0.1]) by inva020.eu-rdc02.nxp.com (Postfix) with ESMTP id F0C571A025D; Thu, 28 Oct 2021 09:53:12 +0200 (CEST) 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 B60AD1A020C; Thu, 28 Oct 2021 09:53:12 +0200 (CEST) Received: from localhost.localdomain (shlinux2.ap.freescale.net [10.192.224.44]) by aprdc01srsp001v.ap-rdc01.nxp.com (Postfix) with ESMTP id A03D4183AD6E; Thu, 28 Oct 2021 15:53:10 +0800 (+08) From: Richard Zhu To: l.stach@pengutronix.de, marcel.ziswiler@toradex.com, tharvey@gateworks.com, kishon@ti.com, vkoul@kernel.org, robh@kernel.org, galak@kernel.crashing.org, shawnguo@kernel.org Cc: linux-phy@lists.infradead.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, kernel@pengutronix.de, linux-imx@nxp.com, Richard Zhu Subject: [PATCH v4 7/8] arm64: dts: imx8mm-evk: Add the pcie support on imx8mm evk board Date: Thu, 28 Oct 2021 15:27:16 +0800 Message-Id: <1635406037-20900-8-git-send-email-hongxing.zhu@nxp.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1635406037-20900-1-git-send-email-hongxing.zhu@nxp.com> References: <1635406037-20900-1-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-20211028_005314_807506_C247B07F X-CRM114-Status: UNSURE ( 8.40 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-phy@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux Phy Mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-phy" Errors-To: linux-phy-bounces+linux-phy=archiver.kernel.org@lists.infradead.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 --- 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..fc1803a8af5b 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 From patchwork Thu Oct 28 07:27:17 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Richard Zhu X-Patchwork-Id: 12589501 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 A7116C433EF for ; Thu, 28 Oct 2021 07:56:01 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 6547C610EA for ; Thu, 28 Oct 2021 07:56:01 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 6547C610EA Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=nxp.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.infradead.org 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=G/+bgPkxqZ64AIldHXGuKGzpYST55PMLox+X73ucFrY=; b=e4zI2tlp04glay NLQU6HjnZfALsMWPpMsKBJoAkJAUNy/XHxamV05FcXWro8ISc+YPTBVwXt5O7lnu/Bkaoq9p+i4cV 7hsuIHa/U2ngkyAM8336wvgBJR18FZxPzhpzos+tdXN/P2D6cfQ8xmXsaGYmp8BrCHj5qrZqN4j96 gDKypwH4Ea+f0pVh1OQDqHmLd5FE8hKIrid/+qqE23jnYwD3gFZhDHyg9ihwdKq6eSoYS30GVM/u2 KAye0ciF5OD97fAoXgnpSxyMkRfLp0slVyrefwnZDw+KugfouWf5qwhfGmagUsbaWB4jS8W7EF0ux BeWyXP+Hc16SW0+mUjTA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1mg0GW-007BoZ-Kp; Thu, 28 Oct 2021 07:56:00 +0000 Received: from inva020.nxp.com ([92.121.34.13]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1mg0Ds-007ARQ-AC; Thu, 28 Oct 2021 07:53:18 +0000 Received: from inva020.nxp.com (localhost [127.0.0.1]) by inva020.eu-rdc02.nxp.com (Postfix) with ESMTP id 112B21A1E1C; Thu, 28 Oct 2021 09:53:15 +0200 (CEST) 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 9C7E31A1E17; Thu, 28 Oct 2021 09:53:14 +0200 (CEST) Received: from localhost.localdomain (shlinux2.ap.freescale.net [10.192.224.44]) by aprdc01srsp001v.ap-rdc01.nxp.com (Postfix) with ESMTP id 45FCA183AC94; Thu, 28 Oct 2021 15:53:12 +0800 (+08) From: Richard Zhu To: l.stach@pengutronix.de, marcel.ziswiler@toradex.com, tharvey@gateworks.com, kishon@ti.com, vkoul@kernel.org, robh@kernel.org, galak@kernel.crashing.org, shawnguo@kernel.org Cc: linux-phy@lists.infradead.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, kernel@pengutronix.de, linux-imx@nxp.com, Richard Zhu Subject: [PATCH v4 8/8] PCI: imx: Add the imx8mm pcie support Date: Thu, 28 Oct 2021 15:27:17 +0800 Message-Id: <1635406037-20900-9-git-send-email-hongxing.zhu@nxp.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1635406037-20900-1-git-send-email-hongxing.zhu@nxp.com> References: <1635406037-20900-1-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-20211028_005316_692287_B6C64583 X-CRM114-Status: GOOD ( 19.05 ) X-BeenThere: linux-phy@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux Phy Mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-phy" Errors-To: linux-phy-bounces+linux-phy=archiver.kernel.org@lists.infradead.org i.MX8MM PCIe works mostly like the i.MX8MQ one, but has a different PHY and allows to output the internal PHY reference clock via the refclk pad. Add the i.MX8MM PCIe support based on the standalone PHY driver. Signed-off-by: Richard Zhu Tested-by: Marcel Ziswiler --- drivers/pci/controller/dwc/pci-imx6.c | 73 ++++++++++++++++++++++++--- 1 file changed, 66 insertions(+), 7 deletions(-) diff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c index 26f49f797b0f..d8c587b4d54f 100644 --- a/drivers/pci/controller/dwc/pci-imx6.c +++ b/drivers/pci/controller/dwc/pci-imx6.c @@ -29,6 +29,7 @@ #include #include #include +#include #include #include @@ -49,6 +50,7 @@ enum imx6_pcie_variants { IMX6QP, IMX7D, IMX8MQ, + IMX8MM, }; #define IMX6_PCIE_FLAG_IMX6_PHY BIT(0) @@ -88,6 +90,7 @@ struct imx6_pcie { struct device *pd_pcie; /* power domain for pcie phy */ struct device *pd_pcie_phy; + struct phy *phy; const struct imx6_pcie_drvdata *drvdata; }; @@ -372,6 +375,8 @@ static void imx6_pcie_assert_core_reset(struct imx6_pcie *imx6_pcie) case IMX7D: case IMX8MQ: reset_control_assert(imx6_pcie->pciephy_reset); + fallthrough; + case IMX8MM: reset_control_assert(imx6_pcie->apps_reset); break; case IMX6SX: @@ -407,7 +412,8 @@ static void imx6_pcie_assert_core_reset(struct imx6_pcie *imx6_pcie) static unsigned int imx6_pcie_grp_offset(const struct imx6_pcie *imx6_pcie) { - WARN_ON(imx6_pcie->drvdata->variant != IMX8MQ); + WARN_ON(imx6_pcie->drvdata->variant != IMX8MQ && + imx6_pcie->drvdata->variant != IMX8MM); return imx6_pcie->controller_id == 1 ? IOMUXC_GPR16 : IOMUXC_GPR14; } @@ -446,6 +452,13 @@ static int imx6_pcie_enable_ref_clk(struct imx6_pcie *imx6_pcie) break; case IMX7D: break; + case IMX8MM: + ret = clk_prepare_enable(imx6_pcie->pcie_aux); + if (ret) { + dev_err(dev, "unable to enable pcie_aux clock\n"); + break; + } + break; case IMX8MQ: ret = clk_prepare_enable(imx6_pcie->pcie_aux); if (ret) { @@ -522,6 +535,14 @@ static void imx6_pcie_deassert_core_reset(struct imx6_pcie *imx6_pcie) goto err_ref_clk; } + switch (imx6_pcie->drvdata->variant) { + case IMX8MM: + if (phy_power_on(imx6_pcie->phy)) + dev_err(dev, "unable to power on PHY\n"); + break; + default: + break; + } /* allow the clocks to stabilize */ usleep_range(200, 500); @@ -538,6 +559,10 @@ static void imx6_pcie_deassert_core_reset(struct imx6_pcie *imx6_pcie) case IMX8MQ: reset_control_deassert(imx6_pcie->pciephy_reset); break; + case IMX8MM: + if (phy_init(imx6_pcie->phy) != 0) + dev_err(dev, "Waiting for PHY ready timeout!\n"); + break; case IMX7D: reset_control_deassert(imx6_pcie->pciephy_reset); @@ -614,6 +639,8 @@ static void imx6_pcie_configure_type(struct imx6_pcie *imx6_pcie) static void imx6_pcie_init_phy(struct imx6_pcie *imx6_pcie) { switch (imx6_pcie->drvdata->variant) { + case IMX8MM: + break; case IMX8MQ: /* * TODO: Currently this code assumes external @@ -753,6 +780,7 @@ static void imx6_pcie_ltssm_enable(struct device *dev) break; case IMX7D: case IMX8MQ: + case IMX8MM: reset_control_deassert(imx6_pcie->apps_reset); break; } @@ -871,6 +899,7 @@ static void imx6_pcie_ltssm_disable(struct device *dev) IMX6Q_GPR12_PCIE_CTL_2, 0); break; case IMX7D: + case IMX8MM: reset_control_assert(imx6_pcie->apps_reset); break; default: @@ -930,6 +959,7 @@ static void imx6_pcie_clk_disable(struct imx6_pcie *imx6_pcie) IMX7D_GPR12_PCIE_PHY_REFCLK_SEL); break; case IMX8MQ: + case IMX8MM: clk_disable_unprepare(imx6_pcie->pcie_aux); break; default: @@ -1043,11 +1073,6 @@ static int imx6_pcie_probe(struct platform_device *pdev) } /* Fetch clocks */ - imx6_pcie->pcie_phy = devm_clk_get(dev, "pcie_phy"); - if (IS_ERR(imx6_pcie->pcie_phy)) - return dev_err_probe(dev, PTR_ERR(imx6_pcie->pcie_phy), - "pcie_phy clock source missing or invalid\n"); - imx6_pcie->pcie_bus = devm_clk_get(dev, "pcie_bus"); if (IS_ERR(imx6_pcie->pcie_bus)) return dev_err_probe(dev, PTR_ERR(imx6_pcie->pcie_bus), @@ -1089,10 +1114,39 @@ static int imx6_pcie_probe(struct platform_device *pdev) dev_err(dev, "Failed to get PCIE APPS reset control\n"); return PTR_ERR(imx6_pcie->apps_reset); } + break; + case IMX8MM: + imx6_pcie->pcie_aux = devm_clk_get(dev, "pcie_aux"); + if (IS_ERR(imx6_pcie->pcie_aux)) + return dev_err_probe(dev, PTR_ERR(imx6_pcie->pcie_aux), + "pcie_aux clock source missing or invalid\n"); + imx6_pcie->apps_reset = devm_reset_control_get_exclusive(dev, + "apps"); + if (IS_ERR(imx6_pcie->apps_reset)) { + dev_err(dev, "Failed to get PCIE APPS reset control\n"); + return PTR_ERR(imx6_pcie->apps_reset); + } + + imx6_pcie->phy = devm_phy_get(dev, "pcie-phy"); + if (IS_ERR(imx6_pcie->phy)) { + if (PTR_ERR(imx6_pcie->phy) == -EPROBE_DEFER) + return -EPROBE_DEFER; + dev_err(dev, "Failed to get PCIE PHY\n"); + return PTR_ERR(imx6_pcie->phy); + } + break; default: break; } + /* Don't fetch the pcie_phy clock, if it has abstract PHY driver */ + if (imx6_pcie->phy == NULL) { + imx6_pcie->pcie_phy = devm_clk_get(dev, "pcie_phy"); + if (IS_ERR(imx6_pcie->pcie_phy)) + return dev_err_probe(dev, PTR_ERR(imx6_pcie->pcie_phy), + "pcie_phy clock source missing or invalid\n"); + } + /* Grab turnoff reset */ imx6_pcie->turnoff_reset = devm_reset_control_get_optional_exclusive(dev, "turnoff"); @@ -1202,6 +1256,10 @@ static const struct imx6_pcie_drvdata drvdata[] = { [IMX8MQ] = { .variant = IMX8MQ, }, + [IMX8MM] = { + .variant = IMX8MM, + .flags = IMX6_PCIE_FLAG_SUPPORTS_SUSPEND, + }, }; static const struct of_device_id imx6_pcie_of_match[] = { @@ -1209,7 +1267,8 @@ static const struct of_device_id imx6_pcie_of_match[] = { { .compatible = "fsl,imx6sx-pcie", .data = &drvdata[IMX6SX], }, { .compatible = "fsl,imx6qp-pcie", .data = &drvdata[IMX6QP], }, { .compatible = "fsl,imx7d-pcie", .data = &drvdata[IMX7D], }, - { .compatible = "fsl,imx8mq-pcie", .data = &drvdata[IMX8MQ], } , + { .compatible = "fsl,imx8mq-pcie", .data = &drvdata[IMX8MQ], }, + { .compatible = "fsl,imx8mm-pcie", .data = &drvdata[IMX8MM], }, {}, };