@@ -12,3 +12,7 @@ endif
ifneq ($(CONFIG_ARCH_MSM),)
obj-$(CONFIG_USB_CHIPIDEA) += ci13xxx_msm.o
endif
+
+ifneq ($(CONFIG_ARCH_MXC),)
+ obj-$(CONFIG_USB_CHIPIDEA) += phy-imx-utmi.o
+endif
new file mode 100644
@@ -0,0 +1,140 @@
+/*
+ * Copyright 2012 Freescale Semiconductor, Inc.
+ *
+ * The code contained herein is licensed under the GNU General Public
+ * License. You may obtain a copy of the GNU General Public License
+ * Version 2 or later at the following locations:
+ *
+ * http://www.opensource.org/licenses/gpl-license.html
+ * http://www.gnu.org/copyleft/gpl.html
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/platform_device.h>
+#include <linux/clk.h>
+#include <linux/usb/otg.h>
+#include <linux/delay.h>
+#include <linux/err.h>
+#include <linux/io.h>
+
+#define DRIVER_NAME "imx_utmi"
+
+#define HW_USBPHY_PWD (0x00000000)
+#define HW_USBPHY_CTRL 0x00000030
+
+#define BM_USBPHY_CTRL_SFTRST 0x80000000
+#define BM_USBPHY_CTRL_CLKGATE 0x40000000
+#define BM_USBPHY_CTRL_ENUTMILEVEL3 0x00008000
+#define BM_USBPHY_CTRL_ENUTMILEVEL2 0x00004000
+
+struct imx_utmi_phy {
+ struct usb_phy phy;
+ struct clk *clk;
+};
+
+#define to_imx_phy(p) container_of((p), struct imx_utmi_phy, phy)
+
+static int imx_utmi_phy_init(struct usb_phy *phy)
+{
+ struct imx_utmi_phy *imx_phy;
+ u32 reg;
+
+ imx_phy = to_imx_phy(phy);
+
+ clk_prepare_enable(imx_phy->clk);
+
+ reg = readl_relaxed(phy->io_priv + HW_USBPHY_CTRL);
+ reg &= ~BM_USBPHY_CTRL_CLKGATE;
+ writel_relaxed(reg, phy->io_priv + HW_USBPHY_CTRL);
+
+ /* Reset USBPHY module */
+ reg = readl_relaxed(phy->io_priv + HW_USBPHY_CTRL);
+ reg |= BM_USBPHY_CTRL_SFTRST;
+ writel_relaxed(reg, phy->io_priv + HW_USBPHY_CTRL);
+ udelay(10);
+
+ /* Remove CLKGATE and SFTRST */
+ reg = readl_relaxed(phy->io_priv + HW_USBPHY_CTRL);
+ reg &= ~(BM_USBPHY_CTRL_CLKGATE | BM_USBPHY_CTRL_SFTRST);
+ writel_relaxed(reg, phy->io_priv + HW_USBPHY_CTRL);
+ udelay(10);
+
+ /* Power up the PHY */
+ writel_relaxed(0, phy->io_priv + HW_USBPHY_PWD);
+ /* enable FS/LS device */
+ reg = readl_relaxed(phy->io_priv + HW_USBPHY_CTRL);
+ reg |= BM_USBPHY_CTRL_ENUTMILEVEL2 | BM_USBPHY_CTRL_ENUTMILEVEL3;
+ writel_relaxed(reg, phy->io_priv + HW_USBPHY_CTRL);
+
+ return 0;
+}
+
+static void imx_utmi_phy_shutdown(struct usb_phy *phy)
+{
+ struct imx_utmi_phy *imx_phy;
+
+ imx_phy = to_imx_phy(phy);
+ clk_disable_unprepare(imx_phy->clk);
+}
+
+static int imx_utmi_probe(struct platform_device *pdev)
+{
+ struct resource *res;
+ void __iomem *base;
+ struct clk *clk;
+ struct imx_utmi_phy *imx_phy;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res) {
+ dev_err(&pdev->dev, "can't get device resources\n");
+ return -ENOENT;
+ }
+
+ base = devm_request_and_ioremap(&pdev->dev, res);
+ if (!base)
+ return -EBUSY;
+
+ clk = devm_clk_get(&pdev->dev, NULL);
+ if (IS_ERR(clk))
+ return PTR_ERR(clk);
+
+ imx_phy = devm_kzalloc(&pdev->dev, sizeof(*imx_phy), GFP_KERNEL);
+ if (!imx_phy)
+ return -ENOMEM;
+
+ imx_phy->phy.io_priv = base;
+ imx_phy->phy.dev = &pdev->dev;
+ imx_phy->phy.label = DRIVER_NAME;
+ imx_phy->phy.init = imx_utmi_phy_init;
+ imx_phy->phy.shutdown = imx_utmi_phy_shutdown;
+ imx_phy->clk = clk;
+ platform_set_drvdata(pdev, &imx_phy->phy);
+
+ return 0;
+}
+
+static const struct of_device_id imx_utmi_dt_ids[] = {
+ { .compatible = "fsl,imx6q-usbphy", },
+ { /* sentinel */ }
+};
+
+static struct platform_driver imx_utmi_driver = {
+ .probe = imx_utmi_probe,
+ .driver = {
+ .name = DRIVER_NAME,
+ .of_match_table = imx_utmi_dt_ids,
+ },
+};
+
+static int __init imx_utmi_init(void)
+{
+ return platform_driver_register(&imx_utmi_driver);
+}
+postcore_initcall(imx_utmi_init);
+
+static void __exit imx_utmi_exit(void)
+{
+ platform_driver_unregister(&imx_utmi_driver);
+}
+module_exit(imx_utmi_exit);
Signed-off-by: Richard Zhao <richard.zhao@freescale.com> --- drivers/usb/chipidea/Makefile | 4 + drivers/usb/chipidea/phy-imx-utmi.c | 140 +++++++++++++++++++++++++++++++++++ 2 files changed, 144 insertions(+), 0 deletions(-) create mode 100644 drivers/usb/chipidea/phy-imx-utmi.c