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Message-Id: <1493411381-16833-3-git-send-email-jon.mason@broadcom.com>
Date: Fri, 28 Apr 2017 16:29:40 -0400
From: Jon Mason <jon.mason@...adcom.com>
To: Florian Fainelli <florian.fainelli@...adcom.com>,
Kishon Vijay Abraham I <kishon@...com>,
Rob Herring <robh+dt@...nel.org>,
Mark Rutland <mark.rutland@....com>
Cc: bcm-kernel-feedback-list@...adcom.com,
linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
devicetree@...r.kernel.org
Subject: [PATCH 2/3] phy: Add USB3 PHY support for Broadcom NS2 SoC
From: Yendapally Reddy Dhananjaya Reddy <yendapally.reddy@...adcom.com>
This patch adds support for Broadcom NS2 USB3 PHY
Signed-off-by: Yendapally Reddy Dhananjaya Reddy <yendapally.reddy@...adcom.com>
Signed-off-by: Jon Mason <jon.mason@...adcom.com>
---
drivers/phy/Kconfig | 9 +
drivers/phy/Makefile | 1 +
drivers/phy/phy-bcm-ns2-usb3.c | 596 +++++++++++++++++++++++++++++++++++++++++
3 files changed, 606 insertions(+)
create mode 100644 drivers/phy/phy-bcm-ns2-usb3.c
diff --git a/drivers/phy/Kconfig b/drivers/phy/Kconfig
index dc5277a..c86f47c 100644
--- a/drivers/phy/Kconfig
+++ b/drivers/phy/Kconfig
@@ -498,6 +498,15 @@ config PHY_NS2_PCIE
Enable this to support the Broadcom Northstar2 PCIe PHY.
If unsure, say N.
+config PHY_NS2_USB3
+ tristate "Broadcom NorthStar2 USB3 PHY driver"
+ depends on OF && (ARCH_BCM_IPROC || COMPILE_TEST)
+ select GENERIC_PHY
+ default ARCH_BCM_IPROC
+ help
+ Enable this to support the Broadcom Northstar2 USB3 PHY.
+ If unsure, say N.
+
config PHY_MESON8B_USB2
tristate "Meson8b and GXBB USB2 PHY driver"
default ARCH_MESON
diff --git a/drivers/phy/Makefile b/drivers/phy/Makefile
index e7b0feb..8ad8920 100644
--- a/drivers/phy/Makefile
+++ b/drivers/phy/Makefile
@@ -61,5 +61,6 @@ obj-$(CONFIG_PHY_PISTACHIO_USB) += phy-pistachio-usb.o
obj-$(CONFIG_PHY_CYGNUS_PCIE) += phy-bcm-cygnus-pcie.o
obj-$(CONFIG_ARCH_TEGRA) += tegra/
obj-$(CONFIG_PHY_NS2_PCIE) += phy-bcm-ns2-pcie.o
+obj-$(CONFIG_PHY_NS2_USB3) += phy-bcm-ns2-usb3.o
obj-$(CONFIG_PHY_MESON8B_USB2) += phy-meson8b-usb2.o
obj-$(CONFIG_PHY_NSP_USB3) += phy-bcm-nsp-usb3.o
diff --git a/drivers/phy/phy-bcm-ns2-usb3.c b/drivers/phy/phy-bcm-ns2-usb3.c
new file mode 100644
index 0000000..203f509
--- /dev/null
+++ b/drivers/phy/phy-bcm-ns2-usb3.c
@@ -0,0 +1,596 @@
+/*
+ * Copyright (C) 2016 Broadcom
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation version 2.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/delay.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/mfd/syscon.h>
+#include <linux/mdio.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/phy/phy.h>
+#include <linux/regmap.h>
+
+#define NS2_USB3_PHY_MAX 0x02
+
+#define NS2_USB3_PHY_CONFIG_CTRL_REG 0x00
+#define NS2_USB3_PHY_CONFIG_CTRL_MASK (BIT(3) | BIT(4) | BIT(5))
+#define NS2_USB3_PHY_CONFIG_CTRL_PLL_SEQ_START BIT(6)
+
+#define NS2_USB3_PHY_P0CTL_REG 0x04
+#define NS2_USB3_PHY_P1CTL_REG 0x08
+#define NS2_USB3_PHY_PXCTL_I_BIT BIT(1)
+
+#define NS2_USB3_PHY_MISC_STATUS_REG 0x10
+
+#define NS2_IDM_RST_CTRL_P0_OFFSET 0x3f8
+#define NS2_IDM_RST_CTRL_P1_OFFSET 0x13f8
+#define NS2_IDM_RESET_CONTROL_BIT BIT(0)
+
+#define NS2_IDM_IO_CTRL_P0_OFFSET 0x0
+#define NS2_IDM_IO_CTRL_P1_OFFSET 0x1000
+/* Bit 23 for PPC Polarity, Bit 24 for PPC NANDNOR select */
+#define NS2_IDM_IO_CTRL_PPC_CFG (BIT(23) | BIT(24))
+
+#define NS2_PHY_RESET_BIT BIT(5)
+#define NS2_PHY_PLL_RESET_BIT BIT(6)
+
+/* NS2 USB3 MDIO */
+#define NS2_USB3_MDIO_PLL30_ADDR 0x8000
+#define NS2_USB3_MDIO_BLK_ACCESS 0x1F
+#define NS2_USB3_MDIO_PLL30_ANAPLL_CTRL 0x14
+#define NS2_USB3_MDIO_PLL30_ANAPLL_CTRL_VAL 0x23
+#define NS2_USB3_MDIO_PLL30_GEN_PLL 0xF
+#define NS2_USB3_MDIO_PLL30_GEN_PLL_PCLK_SEL BIT(11)
+#define NS2_USB3_MDIO_P0_AFE30_ADDR 0x8080
+#define NS2_USB3_MDIO_P1_AFE30_ADDR 0x9080
+#define NS2_USB3_MDIO_AFE30_RX_SIG_DETECT 0x5
+#define NS2_USB3_MDIO_AFE30_RX_SIG_DETECT_VAL 0xAC0D
+
+#define NS2_USB3_MDIO_P0_PIPE_BLK_ADDR 0x8060
+#define NS2_USB3_MDIO_P1_PIPE_BLK_ADDR 0x9060
+#define NS2_USB3_MDIO_PIPE_BLK_REG_1_OFFSET 0x1
+#define NS2_USB3_MDIO_PIPE_BLK_REG_1_VAL 0x207
+
+#define NS2_USB3_MDIO_P0_AEQ_BLK_ADDR 0x80E0
+#define NS2_USB3_MDIO_P1_AEQ_BLK_ADDR 0x90E0
+#define NS2_USB3_MDIO_AEQ_BLK_REG_1_OFFSET 0x1
+#define NS2_USB3_MDIO_AEQ_BLK_REG_1_VAL 0x3000
+
+/* USB3 Histogram Programming */
+#define NS2_USB3_IRAADR_OFFSET 0x198
+#define NS2_USB3_IRADAT_OFFSET 0x19c
+#define USB3_HISTOGRAM_OFFSET_VAL 0xA200
+#define USB3_BYPASS_VBUS_INPUTS BIT(2)
+#define USB3_OVERRIDE_VBU_PRESENT BIT(3)
+#define USB3_OVERRIDE_CURRENT_MASK (~(BIT(4)))
+#define NS2_USB3_MDIO_RESET_BIT (BIT(12))
+
+enum ns2_phy_block {
+ PHY_RESET,
+ PHY_PLL_RESET,
+ PHY_SOFT_RESET,
+ PHY_PIPE_RESET,
+ PHY_REF_CLOCK,
+ PHY_PLL_SEQ_START,
+ PHY_PLL_STATUS,
+ PHY_VBUS_PPC,
+};
+
+enum ns2_reg_base {
+ NS2_USB3_CTRL = 1,
+ NS2_USB3_PHY_CFG,
+ NS2_USB3_RST_CTRL,
+ NS2_USB3_REG_BASE_MAX
+};
+
+struct ns2_usb3_phy {
+ void __iomem *reg_base[NS2_USB3_REG_BASE_MAX];
+ struct ns2_usb3_phy_master *mphy;
+ struct phy *phy;
+ int port_no;
+};
+
+struct ns2_usb3_phy_master {
+ struct ns2_usb3_phy iphys[NS2_USB3_PHY_MAX];
+ struct mdio_device *mdiodev;
+ struct mutex phy_mutex;
+ int init_count; /* PHY is dual port phy, so init once*/
+};
+
+static int iproc_ns2_phy_action(struct ns2_usb3_phy *iphy,
+ enum ns2_phy_block block, bool assert)
+{
+ void __iomem *addr;
+ u32 data, count;
+ u32 offset = 0;
+ int ret = 0;
+
+ switch (block) {
+ case PHY_RESET:
+ addr = iphy->reg_base[NS2_USB3_CTRL];
+
+ ret = regmap_read(addr, offset, &data);
+ if (ret != 0)
+ return ret;
+
+ if (assert)
+ data &= ~NS2_PHY_RESET_BIT;
+ else
+ data |= NS2_PHY_RESET_BIT;
+
+ ret = regmap_write(addr, offset, data);
+ break;
+
+ case PHY_PLL_RESET:
+ addr = iphy->reg_base[NS2_USB3_CTRL];
+
+ ret = regmap_read(addr, offset, &data);
+ if (ret != 0)
+ return ret;
+
+ if (assert)
+ data &= ~NS2_PHY_PLL_RESET_BIT;
+ else
+ data |= NS2_PHY_PLL_RESET_BIT;
+
+ ret = regmap_write(addr, offset, data);
+ break;
+
+ case PHY_SOFT_RESET:
+ addr = iphy->reg_base[NS2_USB3_PHY_CFG];
+ offset = NS2_USB3_PHY_P0CTL_REG;
+
+ ret = regmap_read(addr, offset, &data);
+ if (ret != 0)
+ return ret;
+
+ if (assert)
+ data &= ~NS2_USB3_PHY_PXCTL_I_BIT;
+ else
+ data |= NS2_USB3_PHY_PXCTL_I_BIT;
+
+ ret = regmap_write(addr, offset, data);
+ if (ret != 0)
+ return ret;
+
+ offset = NS2_USB3_PHY_P1CTL_REG;
+
+ ret = regmap_read(addr, offset, &data);
+ if (ret != 0)
+ return ret;
+
+ if (assert)
+ data &= ~NS2_USB3_PHY_PXCTL_I_BIT;
+ else
+ data |= NS2_USB3_PHY_PXCTL_I_BIT;
+
+ ret = regmap_write(addr, offset, data);
+ break;
+
+ case PHY_PIPE_RESET:
+ addr = iphy->reg_base[NS2_USB3_RST_CTRL];
+ offset = NS2_IDM_RST_CTRL_P0_OFFSET;
+
+ ret = regmap_read(addr, offset, &data);
+ if (ret != 0)
+ return ret;
+
+ if (assert)
+ data |= NS2_IDM_RESET_CONTROL_BIT;
+ else
+ data &= ~NS2_IDM_RESET_CONTROL_BIT;
+
+ ret = regmap_write(addr, offset, data);
+ if (ret != 0)
+ return ret;
+
+ offset = NS2_IDM_RST_CTRL_P1_OFFSET;
+ ret = regmap_read(addr, offset, &data);
+ if (ret != 0)
+ return ret;
+
+ if (assert)
+ data |= NS2_IDM_RESET_CONTROL_BIT;
+ else
+ data &= ~NS2_IDM_RESET_CONTROL_BIT;
+
+ ret = regmap_write(addr, offset, data);
+ break;
+
+ case PHY_VBUS_PPC:
+ addr = iphy->reg_base[NS2_USB3_RST_CTRL];
+ offset = NS2_IDM_IO_CTRL_P0_OFFSET;
+
+ ret = regmap_read(addr, offset, &data);
+ if (ret != 0)
+ return ret;
+
+ if (assert)
+ data |= NS2_IDM_IO_CTRL_PPC_CFG;
+ else
+ data &= ~NS2_IDM_IO_CTRL_PPC_CFG;
+
+ ret = regmap_write(addr, offset, data);
+ if (ret != 0)
+ return ret;
+
+ offset = NS2_IDM_IO_CTRL_P1_OFFSET;
+ ret = regmap_read(addr, offset, &data);
+ if (ret != 0)
+ return ret;
+
+ if (assert)
+ data |= NS2_IDM_IO_CTRL_PPC_CFG;
+ else
+ data &= ~NS2_IDM_IO_CTRL_PPC_CFG;
+
+ ret = regmap_write(addr, offset, data);
+ break;
+
+ case PHY_REF_CLOCK:
+ addr = iphy->reg_base[NS2_USB3_PHY_CFG];
+ offset = NS2_USB3_PHY_CONFIG_CTRL_REG;
+
+ ret = regmap_read(addr, offset, &data);
+ if (ret != 0)
+ return ret;
+
+ data &= ~NS2_USB3_PHY_CONFIG_CTRL_MASK;
+
+ ret = regmap_write(addr, offset, data);
+ break;
+
+ case PHY_PLL_SEQ_START:
+ addr = iphy->reg_base[NS2_USB3_PHY_CFG];
+ offset = NS2_USB3_PHY_CONFIG_CTRL_REG;
+
+ ret = regmap_read(addr, offset, &data);
+ if (ret != 0)
+ return ret;
+
+ data |= NS2_USB3_PHY_CONFIG_CTRL_PLL_SEQ_START;
+
+ ret = regmap_write(addr, offset, data);
+ break;
+
+ case PHY_PLL_STATUS:
+ count = 2000;
+ addr = iphy->reg_base[NS2_USB3_PHY_CFG];
+ offset = NS2_USB3_PHY_MISC_STATUS_REG;
+
+ do {
+ udelay(1);
+ ret = regmap_read(addr, offset, &data);
+ if (ret != 0)
+ return ret;
+
+ if (data == 1)
+ break;
+ } while (--count);
+
+ if (!count)
+ ret = -ETIMEDOUT;
+ break;
+
+ default:
+ ret = -EINVAL;
+ break;
+ }
+
+ return ret;
+}
+
+static int ns2_usb3_phy_exit(struct phy *phy)
+{
+ struct ns2_usb3_phy *iphy = phy_get_drvdata(phy);
+ int rc = 0;
+
+ mutex_lock(&iphy->mphy->phy_mutex);
+
+ if (iphy->mphy->init_count <= 0) {
+ mutex_unlock(&iphy->mphy->phy_mutex);
+ return 0;
+ } else if (iphy->mphy->init_count == 1) {
+ /* Only put in to reset for last port to exit */
+ rc = iproc_ns2_phy_action(iphy, PHY_PLL_RESET, true);
+ if (rc)
+ goto out;
+
+ rc = iproc_ns2_phy_action(iphy, PHY_SOFT_RESET, true);
+ if (rc)
+ goto out;
+
+ rc = iproc_ns2_phy_action(iphy, PHY_RESET, true);
+ if (rc)
+ goto out;
+
+ rc = iproc_ns2_phy_action(iphy, PHY_PIPE_RESET, true);
+ if (rc)
+ goto out;
+ }
+
+out:
+ iphy->mphy->init_count--;
+ mutex_unlock(&iphy->mphy->phy_mutex);
+
+ return rc;
+}
+
+static int ns2_usb3_phy_init(struct phy *phy)
+{
+ struct ns2_usb3_phy *iphy = phy_get_drvdata(phy);
+ u16 addr;
+ u16 reg_val;
+ int rc;
+
+ mutex_lock(&iphy->mphy->phy_mutex);
+
+ if (iphy->mphy->init_count) {
+ /* Use count to identify last port to call phy_exit. */
+ iphy->mphy->init_count++;
+ mutex_unlock(&iphy->mphy->phy_mutex);
+ return 0;
+ }
+
+ rc = iproc_ns2_phy_action(iphy, PHY_RESET, false);
+ if (rc)
+ goto out;
+
+ rc = iproc_ns2_phy_action(iphy, PHY_SOFT_RESET, true);
+ if (rc)
+ goto out;
+
+ rc = iproc_ns2_phy_action(iphy, PHY_PIPE_RESET, true);
+ if (rc)
+ goto out;
+
+ rc = iproc_ns2_phy_action(iphy, PHY_REF_CLOCK, true);
+ if (rc)
+ goto out;
+
+ rc = iproc_ns2_phy_action(iphy, PHY_PLL_RESET, true);
+ if (rc)
+ goto out;
+
+ rc = iproc_ns2_phy_action(iphy, PHY_RESET, true);
+ if (rc)
+ goto out;
+
+ rc = iproc_ns2_phy_action(iphy, PHY_RESET, false);
+ if (rc)
+ goto out;
+
+ /* PLL programming */
+ /* PHY PLL30 Block */
+ rc = mdiobus_write(iphy->mphy->mdiodev->bus, iphy->mphy->mdiodev->addr,
+ NS2_USB3_MDIO_BLK_ACCESS,
+ NS2_USB3_MDIO_PLL30_ADDR);
+ if (rc)
+ goto out;
+
+ rc = mdiobus_write(iphy->mphy->mdiodev->bus, iphy->mphy->mdiodev->addr,
+ NS2_USB3_MDIO_PLL30_ANAPLL_CTRL,
+ NS2_USB3_MDIO_PLL30_ANAPLL_CTRL_VAL);
+ if (rc)
+ goto out;
+
+ reg_val = (u16) mdiobus_read(iphy->mphy->mdiodev->bus,
+ iphy->mphy->mdiodev->addr,
+ NS2_USB3_MDIO_PLL30_GEN_PLL);
+ reg_val |= NS2_USB3_MDIO_PLL30_GEN_PLL_PCLK_SEL;
+
+ rc = mdiobus_write(iphy->mphy->mdiodev->bus, iphy->mphy->mdiodev->addr,
+ NS2_USB3_MDIO_PLL30_GEN_PLL, reg_val);
+ if (rc)
+ goto out;
+
+ /* PHY AFE30 Block */
+ addr = NS2_USB3_MDIO_P0_AFE30_ADDR;
+ rc = mdiobus_write(iphy->mphy->mdiodev->bus, iphy->mphy->mdiodev->addr,
+ NS2_USB3_MDIO_BLK_ACCESS, addr);
+ if (rc)
+ goto out;
+
+ rc = mdiobus_write(iphy->mphy->mdiodev->bus, iphy->mphy->mdiodev->addr,
+ NS2_USB3_MDIO_AFE30_RX_SIG_DETECT,
+ NS2_USB3_MDIO_AFE30_RX_SIG_DETECT_VAL);
+ if (rc)
+ goto out;
+
+ addr = NS2_USB3_MDIO_P1_AFE30_ADDR;
+ rc = mdiobus_write(iphy->mphy->mdiodev->bus, iphy->mphy->mdiodev->addr,
+ NS2_USB3_MDIO_BLK_ACCESS, addr);
+ if (rc)
+ goto out;
+
+ rc = mdiobus_write(iphy->mphy->mdiodev->bus, iphy->mphy->mdiodev->addr,
+ NS2_USB3_MDIO_AFE30_RX_SIG_DETECT,
+ NS2_USB3_MDIO_AFE30_RX_SIG_DETECT_VAL);
+ if (rc)
+ goto out;
+
+ /* PHY PIPE Block */
+ addr = NS2_USB3_MDIO_P0_PIPE_BLK_ADDR;
+ rc = mdiobus_write(iphy->mphy->mdiodev->bus, iphy->mphy->mdiodev->addr,
+ NS2_USB3_MDIO_BLK_ACCESS, addr);
+ if (rc)
+ goto out;
+
+ rc = mdiobus_write(iphy->mphy->mdiodev->bus, iphy->mphy->mdiodev->addr,
+ NS2_USB3_MDIO_PIPE_BLK_REG_1_OFFSET,
+ NS2_USB3_MDIO_PIPE_BLK_REG_1_VAL);
+ if (rc)
+ goto out;
+
+ addr = NS2_USB3_MDIO_P1_PIPE_BLK_ADDR;
+ rc = mdiobus_write(iphy->mphy->mdiodev->bus, iphy->mphy->mdiodev->addr,
+ NS2_USB3_MDIO_BLK_ACCESS, addr);
+ if (rc)
+ goto out;
+
+ rc = mdiobus_write(iphy->mphy->mdiodev->bus, iphy->mphy->mdiodev->addr,
+ NS2_USB3_MDIO_PIPE_BLK_REG_1_OFFSET,
+ NS2_USB3_MDIO_PIPE_BLK_REG_1_VAL);
+ if (rc)
+ goto out;
+
+ /* AEQ Block */
+ addr = NS2_USB3_MDIO_P0_AEQ_BLK_ADDR;
+ rc = mdiobus_write(iphy->mphy->mdiodev->bus, iphy->mphy->mdiodev->addr,
+ NS2_USB3_MDIO_BLK_ACCESS, addr);
+ if (rc)
+ goto out;
+
+ rc = mdiobus_write(iphy->mphy->mdiodev->bus, iphy->mphy->mdiodev->addr,
+ NS2_USB3_MDIO_AEQ_BLK_REG_1_OFFSET,
+ NS2_USB3_MDIO_AEQ_BLK_REG_1_VAL);
+ if (rc)
+ goto out;
+
+ /* PHY PORT_1 */
+ addr = NS2_USB3_MDIO_P1_AEQ_BLK_ADDR;
+ rc = mdiobus_write(iphy->mphy->mdiodev->bus, iphy->mphy->mdiodev->addr,
+ NS2_USB3_MDIO_BLK_ACCESS, addr);
+ if (rc)
+ goto out;
+
+ rc = mdiobus_write(iphy->mphy->mdiodev->bus, iphy->mphy->mdiodev->addr,
+ NS2_USB3_MDIO_AEQ_BLK_REG_1_OFFSET,
+ NS2_USB3_MDIO_AEQ_BLK_REG_1_VAL);
+ if (rc)
+ goto out;
+
+ rc = iproc_ns2_phy_action(iphy, PHY_PLL_SEQ_START, true);
+ if (rc)
+ goto out;
+
+ rc = iproc_ns2_phy_action(iphy, PHY_PIPE_RESET, false);
+ if (rc)
+ goto out;
+
+ rc = iproc_ns2_phy_action(iphy, PHY_SOFT_RESET, false);
+ if (rc)
+ goto out;
+
+ rc = iproc_ns2_phy_action(iphy, PHY_PLL_RESET, false);
+ if (rc)
+ goto out;
+
+ rc = iproc_ns2_phy_action(iphy, PHY_PLL_STATUS, true);
+ if (rc)
+ goto out;
+
+ /* Set USB3H VBUS PPC Polarity and NandNor select */
+ rc = iproc_ns2_phy_action(iphy, PHY_VBUS_PPC, true);
+
+out:
+ iphy->mphy->init_count++;
+ mutex_unlock(&iphy->mphy->phy_mutex);
+
+ return rc;
+}
+
+static struct phy_ops ns2_usb3_phy_ops = {
+ .init = ns2_usb3_phy_init,
+ .exit = ns2_usb3_phy_exit,
+ .owner = THIS_MODULE,
+};
+
+static int ns2_usb3_phy_probe(struct mdio_device *mdiodev)
+{
+ struct device *dev = &mdiodev->dev;
+ struct device_node *dn = dev->of_node, *child;
+ struct ns2_usb3_phy_master *mphy;
+ struct phy_provider *provider;
+ int cnt;
+
+ mphy = devm_kzalloc(dev, sizeof(*mphy), GFP_KERNEL);
+ if (!mphy)
+ return -ENOMEM;
+ mphy->mdiodev = mdiodev;
+ mutex_init(&mphy->phy_mutex);
+ mphy->init_count = 0;
+
+ cnt = 0;
+ for_each_available_child_of_node(dn, child) {
+ struct ns2_usb3_phy *iphy;
+ unsigned int val;
+ struct regmap *io;
+
+ iphy = &mphy->iphys[cnt];
+ if (of_property_read_u32(child, "reg", &val)) {
+ dev_err(dev, "missing reg property in node %s\n",
+ child->name);
+ return -EINVAL;
+ }
+ iphy->port_no = val;
+ iphy->mphy = mphy;
+
+ io = syscon_regmap_lookup_by_phandle(dn, "usb3-ctrl-syscon");
+ if (IS_ERR(io))
+ return PTR_ERR(io);
+ iphy->reg_base[NS2_USB3_CTRL] = io;
+
+ io = syscon_regmap_lookup_by_phandle(dn, "usb3-phy-cfg-syscon");
+ if (IS_ERR(io))
+ return PTR_ERR(io);
+ iphy->reg_base[NS2_USB3_PHY_CFG] = io;
+
+ io = syscon_regmap_lookup_by_phandle(dn,
+ "usb3-rst-ctrl-syscon");
+ if (IS_ERR(io))
+ return PTR_ERR(io);
+ iphy->reg_base[NS2_USB3_RST_CTRL] = io;
+
+ iphy->phy = devm_phy_create(dev, child, &ns2_usb3_phy_ops);
+ if (IS_ERR(iphy->phy)) {
+ dev_err(dev, "failed to create PHY\n");
+ return PTR_ERR(iphy->phy);
+ }
+
+ phy_set_drvdata(iphy->phy, iphy);
+ cnt++;
+ }
+
+ dev_set_drvdata(dev, mphy);
+ provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate);
+ if (IS_ERR(provider)) {
+ dev_err(dev, "could not register PHY provider\n");
+ return PTR_ERR(provider);
+ }
+
+ dev_info(dev, "registered %d phy(s)\n", cnt);
+ return 0;
+}
+
+static const struct of_device_id ns2_usb3_phy_of_match[] = {
+ {.compatible = "brcm,ns2-usb3-phy",},
+ { /* sentinel */ }
+};
+
+static struct mdio_driver ns2_usb3_phy_driver = {
+ .mdiodrv = {
+ .driver = {
+ .name = "ns2-usb3-phy",
+ .of_match_table = ns2_usb3_phy_of_match,
+ },
+ },
+ .probe = ns2_usb3_phy_probe,
+};
+mdio_module_driver(ns2_usb3_phy_driver);
+
+MODULE_DESCRIPTION("Broadcom NS2 USB3 PHY driver");
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Broadcom");
--
2.7.4
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