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 X-Spam-Level: X-Spam-Status: No, score=-12.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4C2F0C433E1 for ; Mon, 17 Aug 2020 22:34:34 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2EA4420674 for ; Mon, 17 Aug 2020 22:34:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730030AbgHQWec (ORCPT ); Mon, 17 Aug 2020 18:34:32 -0400 Received: from mail.v3.sk ([167.172.186.51]:54256 "EHLO shell.v3.sk" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1729947AbgHQWe3 (ORCPT ); Mon, 17 Aug 2020 18:34:29 -0400 Received: from localhost (localhost.localdomain [127.0.0.1]) by zimbra.v3.sk (Postfix) with ESMTP id 283AEDFA73; Mon, 17 Aug 2020 22:33:30 +0000 (UTC) Received: from shell.v3.sk ([127.0.0.1]) by localhost (zimbra.v3.sk [127.0.0.1]) (amavisd-new, port 10032) with ESMTP id wEwqFHfQGGNu; Mon, 17 Aug 2020 22:33:28 +0000 (UTC) Received: from localhost (localhost.localdomain [127.0.0.1]) by zimbra.v3.sk (Postfix) with ESMTP id 685CEDF880; Mon, 17 Aug 2020 22:33:24 +0000 (UTC) X-Virus-Scanned: amavisd-new at zimbra.v3.sk Received: from shell.v3.sk ([127.0.0.1]) by localhost (zimbra.v3.sk [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id cxjoEFMROsQ1; Mon, 17 Aug 2020 22:33:22 +0000 (UTC) Received: from localhost (unknown [109.183.109.54]) by zimbra.v3.sk (Postfix) with ESMTPSA id 1286BDFA73; Mon, 17 Aug 2020 22:33:17 +0000 (UTC) From: Lubomir Rintel To: Kishon Vijay Abraham I Cc: Vinod Koul , Rob Herring , linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, Lubomir Rintel Subject: [RESEND PATCH v3 3/3] phy: Add USB HSIC PHY driver for Marvell MMP3 SoC Date: Tue, 18 Aug 2020 00:34:00 +0200 Message-Id: <20200817223400.403505-4-lkundrak@v3.sk> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200817223400.403505-1-lkundrak@v3.sk> References: <20200817223400.403505-1-lkundrak@v3.sk> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add PHY driver for the HSICs found on Marvell MMP3 SoC. The driver is rather straightforward -- the PHY essentially just needs to be enabled. Signed-off-by: Lubomir Rintel --- Changes since v1: - Explicitely cast drvdata pointer to make sparse happy drivers/phy/marvell/Kconfig | 12 +++++ drivers/phy/marvell/Makefile | 1 + drivers/phy/marvell/phy-mmp3-hsic.c | 82 +++++++++++++++++++++++++++++ 3 files changed, 95 insertions(+) create mode 100644 drivers/phy/marvell/phy-mmp3-hsic.c diff --git a/drivers/phy/marvell/Kconfig b/drivers/phy/marvell/Kconfig index 8f6273c837ec3..6c96f2bf52665 100644 --- a/drivers/phy/marvell/Kconfig +++ b/drivers/phy/marvell/Kconfig @@ -116,3 +116,15 @@ config PHY_MMP3_USB The PHY driver will be used by Marvell udc/ehci/otg driver. =20 To compile this driver as a module, choose M here. + +config PHY_MMP3_HSIC + tristate "Marvell MMP3 USB HSIC PHY Driver" + depends on MACH_MMP3_DT || COMPILE_TEST + select GENERIC_PHY + help + Enable this to support Marvell MMP3 USB HSIC PHY driver for + Marvell MMP3 SoC. This driver will be used my the Marvell EHCI + driver to initialize the interface to internal USB HSIC + components on MMP3-based boards. + + To compile this driver as a module, choose M here. diff --git a/drivers/phy/marvell/Makefile b/drivers/phy/marvell/Makefile index 5a106b1549f41..7f296ef028292 100644 --- a/drivers/phy/marvell/Makefile +++ b/drivers/phy/marvell/Makefile @@ -3,6 +3,7 @@ obj-$(CONFIG_ARMADA375_USBCLUSTER_PHY) +=3D phy-armada375= -usb2.o obj-$(CONFIG_PHY_BERLIN_SATA) +=3D phy-berlin-sata.o obj-$(CONFIG_PHY_BERLIN_USB) +=3D phy-berlin-usb.o obj-$(CONFIG_PHY_MMP3_USB) +=3D phy-mmp3-usb.o +obj-$(CONFIG_PHY_MMP3_HSIC) +=3D phy-mmp3-hsic.o obj-$(CONFIG_PHY_MVEBU_A3700_COMPHY) +=3D phy-mvebu-a3700-comphy.o obj-$(CONFIG_PHY_MVEBU_A3700_UTMI) +=3D phy-mvebu-a3700-utmi.o obj-$(CONFIG_PHY_MVEBU_A38X_COMPHY) +=3D phy-armada38x-comphy.o diff --git a/drivers/phy/marvell/phy-mmp3-hsic.c b/drivers/phy/marvell/ph= y-mmp3-hsic.c new file mode 100644 index 0000000000000..47c1e8894939f --- /dev/null +++ b/drivers/phy/marvell/phy-mmp3-hsic.c @@ -0,0 +1,82 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2020 Lubomir Rintel + */ + +#include +#include +#include +#include +#include + +#define HSIC_CTRL 0x08 +#define HSIC_ENABLE BIT(7) +#define PLL_BYPASS BIT(4) + +static int mmp3_hsic_phy_init(struct phy *phy) +{ + void __iomem *base =3D (void __iomem *)phy_get_drvdata(phy); + u32 hsic_ctrl; + + hsic_ctrl =3D readl_relaxed(base + HSIC_CTRL); + hsic_ctrl |=3D HSIC_ENABLE; + hsic_ctrl |=3D PLL_BYPASS; + writel_relaxed(hsic_ctrl, base + HSIC_CTRL); + + return 0; +} + +static const struct phy_ops mmp3_hsic_phy_ops =3D { + .init =3D mmp3_hsic_phy_init, + .owner =3D THIS_MODULE, +}; + +static const struct of_device_id mmp3_hsic_phy_of_match[] =3D { + { .compatible =3D "marvell,mmp3-hsic-phy", }, + { }, +}; +MODULE_DEVICE_TABLE(of, mmp3_hsic_phy_of_match); + +static int mmp3_hsic_phy_probe(struct platform_device *pdev) +{ + struct device *dev =3D &pdev->dev; + struct phy_provider *provider; + struct resource *resource; + void __iomem *base; + struct phy *phy; + + resource =3D platform_get_resource(pdev, IORESOURCE_MEM, 0); + base =3D devm_ioremap_resource(dev, resource); + if (IS_ERR(base)) { + dev_err(dev, "failed to remap PHY regs\n"); + return PTR_ERR(base); + } + + phy =3D devm_phy_create(dev, NULL, &mmp3_hsic_phy_ops); + if (IS_ERR(phy)) { + dev_err(dev, "failed to create PHY\n"); + return PTR_ERR(phy); + } + + phy_set_drvdata(phy, (void *)base); + provider =3D devm_of_phy_provider_register(dev, of_phy_simple_xlate); + if (IS_ERR(provider)) { + dev_err(dev, "failed to register PHY provider\n"); + return PTR_ERR(provider); + } + + return 0; +} + +static struct platform_driver mmp3_hsic_phy_driver =3D { + .probe =3D mmp3_hsic_phy_probe, + .driver =3D { + .name =3D "mmp3-hsic-phy", + .of_match_table =3D mmp3_hsic_phy_of_match, + }, +}; +module_platform_driver(mmp3_hsic_phy_driver); + +MODULE_AUTHOR("Lubomir Rintel "); +MODULE_DESCRIPTION("Marvell MMP3 USB HSIC PHY Driver"); +MODULE_LICENSE("GPL"); --=20 2.26.2