| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Rafał Miłecki | 823 | 97.40% | 6 | 54.55% |
| Rob Herring | 11 | 1.30% | 1 | 9.09% |
| Jeff Johnson | 5 | 0.59% | 1 | 9.09% |
| Chunfeng Yun | 3 | 0.36% | 1 | 9.09% |
| Thomas Gleixner | 2 | 0.24% | 1 | 9.09% |
| Sean Anderson | 1 | 0.12% | 1 | 9.09% |
| Total | 845 | 11 |
// SPDX-License-Identifier: GPL-2.0-only /* * Broadcom Northstar USB 3.0 PHY Driver * * Copyright (C) 2016 Rafał Miłecki <rafal@milecki.pl> * Copyright (C) 2016 Broadcom * * All magic values used for initialization (and related comments) were obtained * from Broadcom's SDK: * Copyright (c) Broadcom Corp, 2012 */ #include <linux/bcma/bcma.h> #include <linux/delay.h> #include <linux/err.h> #include <linux/iopoll.h> #include <linux/mdio.h> #include <linux/module.h> #include <linux/of.h> #include <linux/of_address.h> #include <linux/platform_device.h> #include <linux/phy/phy.h> #include <linux/property.h> #include <linux/slab.h> #define BCM_NS_USB3_PHY_BASE_ADDR_REG 0x1f #define BCM_NS_USB3_PHY_PLL30_BLOCK 0x8000 #define BCM_NS_USB3_PHY_TX_PMD_BLOCK 0x8040 #define BCM_NS_USB3_PHY_PIPE_BLOCK 0x8060 /* Registers of PLL30 block */ #define BCM_NS_USB3_PLL_CONTROL 0x01 #define BCM_NS_USB3_PLLA_CONTROL0 0x0a #define BCM_NS_USB3_PLLA_CONTROL1 0x0b /* Registers of TX PMD block */ #define BCM_NS_USB3_TX_PMD_CONTROL1 0x01 /* Registers of PIPE block */ #define BCM_NS_USB3_LFPS_CMP 0x02 #define BCM_NS_USB3_LFPS_DEGLITCH 0x03 enum bcm_ns_family { BCM_NS_UNKNOWN, BCM_NS_AX, BCM_NS_BX, }; struct bcm_ns_usb3 { struct device *dev; enum bcm_ns_family family; void __iomem *dmp; struct mdio_device *mdiodev; struct phy *phy; }; static const struct of_device_id bcm_ns_usb3_id_table[] = { { .compatible = "brcm,ns-ax-usb3-phy", .data = (int *)BCM_NS_AX, }, { .compatible = "brcm,ns-bx-usb3-phy", .data = (int *)BCM_NS_BX, }, {}, }; static int bcm_ns_usb3_mdio_phy_write(struct bcm_ns_usb3 *usb3, u16 reg, u16 value); static int bcm_ns_usb3_phy_init_ns_bx(struct bcm_ns_usb3 *usb3) { int err; /* USB3 PLL Block */ err = bcm_ns_usb3_mdio_phy_write(usb3, BCM_NS_USB3_PHY_BASE_ADDR_REG, BCM_NS_USB3_PHY_PLL30_BLOCK); if (err < 0) return err; /* Assert Ana_Pllseq start */ bcm_ns_usb3_mdio_phy_write(usb3, BCM_NS_USB3_PLL_CONTROL, 0x1000); /* Assert CML Divider ratio to 26 */ bcm_ns_usb3_mdio_phy_write(usb3, BCM_NS_USB3_PLLA_CONTROL0, 0x6400); /* Asserting PLL Reset */ bcm_ns_usb3_mdio_phy_write(usb3, BCM_NS_USB3_PLLA_CONTROL1, 0xc000); /* Deaaserting PLL Reset */ bcm_ns_usb3_mdio_phy_write(usb3, BCM_NS_USB3_PLLA_CONTROL1, 0x8000); /* Deasserting USB3 system reset */ writel(0, usb3->dmp + BCMA_RESET_CTL); /* PLL frequency monitor enable */ bcm_ns_usb3_mdio_phy_write(usb3, BCM_NS_USB3_PLL_CONTROL, 0x9000); /* PIPE Block */ bcm_ns_usb3_mdio_phy_write(usb3, BCM_NS_USB3_PHY_BASE_ADDR_REG, BCM_NS_USB3_PHY_PIPE_BLOCK); /* CMPMAX & CMPMINTH setting */ bcm_ns_usb3_mdio_phy_write(usb3, BCM_NS_USB3_LFPS_CMP, 0xf30d); /* DEGLITCH MIN & MAX setting */ bcm_ns_usb3_mdio_phy_write(usb3, BCM_NS_USB3_LFPS_DEGLITCH, 0x6302); /* TXPMD block */ bcm_ns_usb3_mdio_phy_write(usb3, BCM_NS_USB3_PHY_BASE_ADDR_REG, BCM_NS_USB3_PHY_TX_PMD_BLOCK); /* Enabling SSC */ bcm_ns_usb3_mdio_phy_write(usb3, BCM_NS_USB3_TX_PMD_CONTROL1, 0x1003); return 0; } static int bcm_ns_usb3_phy_init_ns_ax(struct bcm_ns_usb3 *usb3) { int err; /* PLL30 block */ err = bcm_ns_usb3_mdio_phy_write(usb3, BCM_NS_USB3_PHY_BASE_ADDR_REG, BCM_NS_USB3_PHY_PLL30_BLOCK); if (err < 0) return err; bcm_ns_usb3_mdio_phy_write(usb3, BCM_NS_USB3_PLLA_CONTROL0, 0x6400); bcm_ns_usb3_mdio_phy_write(usb3, BCM_NS_USB3_PHY_BASE_ADDR_REG, 0x80e0); bcm_ns_usb3_mdio_phy_write(usb3, 0x02, 0x009c); /* Enable SSC */ bcm_ns_usb3_mdio_phy_write(usb3, BCM_NS_USB3_PHY_BASE_ADDR_REG, BCM_NS_USB3_PHY_TX_PMD_BLOCK); bcm_ns_usb3_mdio_phy_write(usb3, 0x02, 0x21d3); bcm_ns_usb3_mdio_phy_write(usb3, BCM_NS_USB3_TX_PMD_CONTROL1, 0x1003); /* Deasserting USB3 system reset */ writel(0, usb3->dmp + BCMA_RESET_CTL); return 0; } static int bcm_ns_usb3_phy_init(struct phy *phy) { struct bcm_ns_usb3 *usb3 = phy_get_drvdata(phy); int err; /* Perform USB3 system soft reset */ writel(BCMA_RESET_CTL_RESET, usb3->dmp + BCMA_RESET_CTL); switch (usb3->family) { case BCM_NS_AX: err = bcm_ns_usb3_phy_init_ns_ax(usb3); break; case BCM_NS_BX: err = bcm_ns_usb3_phy_init_ns_bx(usb3); break; default: WARN_ON(1); err = -ENOTSUPP; } return err; } static const struct phy_ops ops = { .init = bcm_ns_usb3_phy_init, .owner = THIS_MODULE, }; /************************************************** * MDIO driver code **************************************************/ static int bcm_ns_usb3_mdio_phy_write(struct bcm_ns_usb3 *usb3, u16 reg, u16 value) { struct mdio_device *mdiodev = usb3->mdiodev; return mdiodev_write(mdiodev, reg, value); } static int bcm_ns_usb3_mdio_probe(struct mdio_device *mdiodev) { struct device *dev = &mdiodev->dev; struct phy_provider *phy_provider; struct device_node *syscon_np; struct bcm_ns_usb3 *usb3; struct resource res; int err; usb3 = devm_kzalloc(dev, sizeof(*usb3), GFP_KERNEL); if (!usb3) return -ENOMEM; usb3->dev = dev; usb3->mdiodev = mdiodev; usb3->family = (enum bcm_ns_family)device_get_match_data(dev); syscon_np = of_parse_phandle(dev->of_node, "usb3-dmp-syscon", 0); err = of_address_to_resource(syscon_np, 0, &res); of_node_put(syscon_np); if (err) return err; usb3->dmp = devm_ioremap_resource(dev, &res); if (IS_ERR(usb3->dmp)) return PTR_ERR(usb3->dmp); usb3->phy = devm_phy_create(dev, NULL, &ops); if (IS_ERR(usb3->phy)) { dev_err(dev, "Failed to create PHY\n"); return PTR_ERR(usb3->phy); } phy_set_drvdata(usb3->phy, usb3); phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate); return PTR_ERR_OR_ZERO(phy_provider); } static struct mdio_driver bcm_ns_usb3_mdio_driver = { .mdiodrv = { .driver = { .name = "bcm_ns_mdio_usb3", .of_match_table = bcm_ns_usb3_id_table, }, }, .probe = bcm_ns_usb3_mdio_probe, }; mdio_module_driver(bcm_ns_usb3_mdio_driver); MODULE_DESCRIPTION("Broadcom Northstar USB 3.0 PHY Driver"); MODULE_LICENSE("GPL v2"); MODULE_DEVICE_TABLE(of, bcm_ns_usb3_id_table);
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