10347c692SLubomir Rintel // SPDX-License-Identifier: GPL-2.0+ 20347c692SLubomir Rintel /* 30347c692SLubomir Rintel * Copyright (C) 2020 Lubomir Rintel <lkundrak@v3.sk> 40347c692SLubomir Rintel */ 50347c692SLubomir Rintel 60347c692SLubomir Rintel #include <linux/delay.h> 70347c692SLubomir Rintel #include <linux/io.h> 80347c692SLubomir Rintel #include <linux/module.h> 90347c692SLubomir Rintel #include <linux/phy/phy.h> 100347c692SLubomir Rintel #include <linux/platform_device.h> 110347c692SLubomir Rintel 120347c692SLubomir Rintel #define HSIC_CTRL 0x08 130347c692SLubomir Rintel #define HSIC_ENABLE BIT(7) 140347c692SLubomir Rintel #define PLL_BYPASS BIT(4) 150347c692SLubomir Rintel 160347c692SLubomir Rintel static int mmp3_hsic_phy_init(struct phy *phy) 170347c692SLubomir Rintel { 180347c692SLubomir Rintel void __iomem *base = (void __iomem *)phy_get_drvdata(phy); 190347c692SLubomir Rintel u32 hsic_ctrl; 200347c692SLubomir Rintel 210347c692SLubomir Rintel hsic_ctrl = readl_relaxed(base + HSIC_CTRL); 220347c692SLubomir Rintel hsic_ctrl |= HSIC_ENABLE; 230347c692SLubomir Rintel hsic_ctrl |= PLL_BYPASS; 240347c692SLubomir Rintel writel_relaxed(hsic_ctrl, base + HSIC_CTRL); 250347c692SLubomir Rintel 260347c692SLubomir Rintel return 0; 270347c692SLubomir Rintel } 280347c692SLubomir Rintel 290347c692SLubomir Rintel static const struct phy_ops mmp3_hsic_phy_ops = { 300347c692SLubomir Rintel .init = mmp3_hsic_phy_init, 310347c692SLubomir Rintel .owner = THIS_MODULE, 320347c692SLubomir Rintel }; 330347c692SLubomir Rintel 340347c692SLubomir Rintel static const struct of_device_id mmp3_hsic_phy_of_match[] = { 350347c692SLubomir Rintel { .compatible = "marvell,mmp3-hsic-phy", }, 360347c692SLubomir Rintel { }, 370347c692SLubomir Rintel }; 380347c692SLubomir Rintel MODULE_DEVICE_TABLE(of, mmp3_hsic_phy_of_match); 390347c692SLubomir Rintel 400347c692SLubomir Rintel static int mmp3_hsic_phy_probe(struct platform_device *pdev) 410347c692SLubomir Rintel { 420347c692SLubomir Rintel struct device *dev = &pdev->dev; 430347c692SLubomir Rintel struct phy_provider *provider; 440347c692SLubomir Rintel struct resource *resource; 450347c692SLubomir Rintel void __iomem *base; 460347c692SLubomir Rintel struct phy *phy; 470347c692SLubomir Rintel 480347c692SLubomir Rintel resource = platform_get_resource(pdev, IORESOURCE_MEM, 0); 490347c692SLubomir Rintel base = devm_ioremap_resource(dev, resource); 50*349f9832SHe Ying if (IS_ERR(base)) 510347c692SLubomir Rintel return PTR_ERR(base); 520347c692SLubomir Rintel 530347c692SLubomir Rintel phy = devm_phy_create(dev, NULL, &mmp3_hsic_phy_ops); 540347c692SLubomir Rintel if (IS_ERR(phy)) { 550347c692SLubomir Rintel dev_err(dev, "failed to create PHY\n"); 560347c692SLubomir Rintel return PTR_ERR(phy); 570347c692SLubomir Rintel } 580347c692SLubomir Rintel 590347c692SLubomir Rintel phy_set_drvdata(phy, (void *)base); 600347c692SLubomir Rintel provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate); 610347c692SLubomir Rintel if (IS_ERR(provider)) { 620347c692SLubomir Rintel dev_err(dev, "failed to register PHY provider\n"); 630347c692SLubomir Rintel return PTR_ERR(provider); 640347c692SLubomir Rintel } 650347c692SLubomir Rintel 660347c692SLubomir Rintel return 0; 670347c692SLubomir Rintel } 680347c692SLubomir Rintel 690347c692SLubomir Rintel static struct platform_driver mmp3_hsic_phy_driver = { 700347c692SLubomir Rintel .probe = mmp3_hsic_phy_probe, 710347c692SLubomir Rintel .driver = { 720347c692SLubomir Rintel .name = "mmp3-hsic-phy", 730347c692SLubomir Rintel .of_match_table = mmp3_hsic_phy_of_match, 740347c692SLubomir Rintel }, 750347c692SLubomir Rintel }; 760347c692SLubomir Rintel module_platform_driver(mmp3_hsic_phy_driver); 770347c692SLubomir Rintel 780347c692SLubomir Rintel MODULE_AUTHOR("Lubomir Rintel <lkundrak@v3.sk>"); 790347c692SLubomir Rintel MODULE_DESCRIPTION("Marvell MMP3 USB HSIC PHY Driver"); 800347c692SLubomir Rintel MODULE_LICENSE("GPL"); 81