ARM: davinci: da8xx: Add USB PHY platform device

There is now a proper phy driver for the DA8xx SoC USB PHY. This adds the
platform device declarations needed to use it.

Signed-off-by: David Lechner <david@lechnology.com>
[nsekhar@ti.com: keep usb-davinci.h included in board-da830-evm.c
		 minor subject line adjustment]
Signed-off-by: Sekhar Nori <nsekhar@ti.com>

4 files changed, 24 insertions, 14 deletions

diff --git a/arch/arm/mach-davinci/board-da830-evm.c b/arch/arm/mach-davinci/board-da830-evm.c
index 6001b32305ec..53172add5248 100644
--- a/arch/arm/mach-davinci/board-da830-evm.c
+++ b/arch/arm/mach-davinci/board-da830-evm.c
@@ -112,7 +112,7 @@ static __init void da830_evm_usb_init(void)
         int ret;
 
         /*
-         * Set up USB clock/mode in the CFGCHIP2 register.
+         * Set up USB clock in the CFGCHIP2 register.
          * FYI:  CFGCHIP2 is 0x0000ef00 initially.
          */
         cfgchip2 = __raw_readl(DA8XX_SYSCFG0_VIRT(DA8XX_CFGCHIP2_REG));
@@ -129,22 +129,15 @@ static __init void da830_evm_usb_init(void)
         cfgchip2 &= ~CFGCHIP2_USB1PHYCLKMUX;
         cfgchip2 |=  CFGCHIP2_USB2PHYCLKMUX;
 
-        /*
-         * We have to override VBUS/ID signals when MUSB is configured into the
-         * host-only mode -- ID pin will float if no cable is connected, so the
-         * controller won't be able to drive VBUS thinking that it's a B-device.
-         * Otherwise, we want to use the OTG mode and enable VBUS comparators.
-         */
-        cfgchip2 &= ~CFGCHIP2_OTGMODE_MASK;
-#ifdef  CONFIG_USB_MUSB_HOST
-        cfgchip2 |=  CFGCHIP2_FORCE_HOST;
-#else
-        cfgchip2 |=  CFGCHIP2_SESENDEN | CFGCHIP2_VBDTCTEN;
-#endif
-
         __raw_writel(cfgchip2, DA8XX_SYSCFG0_VIRT(DA8XX_CFGCHIP2_REG));
 
         /* USB_REFCLKIN is not used. */
+
+        ret = da8xx_register_usb_phy();
+        if (ret)
+                pr_warn("%s: USB PHY registration failed: %d\n",
+                        __func__, ret);
+
         ret = davinci_cfg_reg(DA830_USB0_DRVVBUS);
         if (ret)
                 pr_warn("%s: USB 2.0 PinMux setup failed: %d\n", __func__, ret);
diff --git a/arch/arm/mach-davinci/board-omapl138-hawk.c b/arch/arm/mach-davinci/board-omapl138-hawk.c
index 70ed5ef2ef8c..67477ca4f15a 100644
--- a/arch/arm/mach-davinci/board-omapl138-hawk.c
+++ b/arch/arm/mach-davinci/board-omapl138-hawk.c
@@ -260,6 +260,11 @@ static __init void omapl138_hawk_usb_init(void)
         cfgchip2 |=  CFGCHIP2_REFFREQ_24MHZ;
         __raw_writel(cfgchip2, DA8XX_SYSCFG0_VIRT(DA8XX_CFGCHIP2_REG));
 
+        ret = da8xx_register_usb_phy();
+        if (ret)
+                pr_warn("%s: USB PHY registration failed: %d\n",
+                        __func__, ret);
+
         ret = gpio_request_one(DA850_USB1_VBUS_PIN,
                         GPIOF_DIR_OUT, "USB1 VBUS");
         if (ret < 0) {
diff --git a/arch/arm/mach-davinci/include/mach/da8xx.h b/arch/arm/mach-davinci/include/mach/da8xx.h
index 2f6fe2f0c733..5e07d06f60e4 100644
--- a/arch/arm/mach-davinci/include/mach/da8xx.h
+++ b/arch/arm/mach-davinci/include/mach/da8xx.h
@@ -89,6 +89,7 @@ int da850_register_edma(struct edma_rsv_info *rsv[2]);
 int da8xx_register_i2c(int instance, struct davinci_i2c_platform_data *pdata);
 int da8xx_register_spi_bus(int instance, unsigned num_chipselect);
 int da8xx_register_watchdog(void);
+int da8xx_register_usb_phy(void);
 int da8xx_register_usb20(unsigned mA, unsigned potpgt);
 int da8xx_register_usb11(struct da8xx_ohci_root_hub *pdata);
 int da8xx_register_emac(void);
diff --git a/arch/arm/mach-davinci/usb-da8xx.c b/arch/arm/mach-davinci/usb-da8xx.c
index f141f5171906..4bb190380060 100644
--- a/arch/arm/mach-davinci/usb-da8xx.c
+++ b/arch/arm/mach-davinci/usb-da8xx.c
@@ -3,6 +3,7 @@
  */
 #include <linux/dma-mapping.h>
 #include <linux/init.h>
+#include <linux/phy/phy.h>
 #include <linux/platform_data/usb-davinci.h>
 #include <linux/platform_device.h>
 #include <linux/usb/musb.h>
@@ -15,6 +16,16 @@
 #define DA8XX_USB0_BASE         0x01e00000
 #define DA8XX_USB1_BASE         0x01e25000
 
+static struct platform_device da8xx_usb_phy = {
+        .name           = "da8xx-usb-phy",
+        .id             = -1,
+};
+
+int __init da8xx_register_usb_phy(void)
+{
+        return platform_device_register(&da8xx_usb_phy);
+}
+
 #if IS_ENABLED(CONFIG_USB_MUSB_HDRC)
 
 static struct musb_hdrc_config musb_config = {