Adding support for USB host on imx25 using the internal PHY
Signed-off-by: Matthias Weisser <weiss...@arcor.de>
---
drivers/usb/host/ehci-mxc.c | 28 ++++++++++++++++++++++++++--
1 files changed, 26 insertions(+), 2 deletions(-)
diff --git a/drivers/usb/host/ehci-mxc.c b/drivers/usb/host/ehci-mxc.c
index 6af35ab..eca430f 100644
--- a/drivers/usb/host/ehci-mxc.c
+++ b/drivers/usb/host/ehci-mxc.c
@@ -29,6 +29,14 @@
#define USBCTRL_OTGBASE_OFFSET 0x600
+#ifdef CONFIG_MX25
+#define MX25_USB_CTRL_IP_PUE_DOWN_BIT (1<<6)
+#define MX25_USB_CTRL_HSTD_BIT (1<<5)
+#define MX25_USB_CTRL_USBTE_BIT (1<<4)
+#define MX25_USB_CTRL_OCPOL_OTG_BIT (1<<3)
+#endif
+
+#ifdef CONFIG_MX31
#define MX31_OTG_SIC_SHIFT 29
#define MX31_OTG_SIC_MASK (0x3 << MX31_OTG_SIC_SHIFT)
#define MX31_OTG_PM_BIT (1 << 24)
@@ -42,10 +50,19 @@
#define MX31_H1_SIC_MASK (0x3 << MX31_H1_SIC_SHIFT)
#define MX31_H1_PM_BIT (1 << 8)
#define MX31_H1_DT_BIT (1 << 4)
+#endif
static int mxc_set_usbcontrol(int port, unsigned int flags)
{
unsigned int v;
+
+#ifdef CONFIG_MX25
+ v = MX25_USB_CTRL_IP_PUE_DOWN_BIT | MX25_USB_CTRL_HSTD_BIT |
+ MX25_USB_CTRL_USBTE_BIT | MX25_USB_CTRL_OCPOL_OTG_BIT;
+
+ writel(v, IMX_USB_BASE + USBCTRL_OTGBASE_OFFSET);
+#endif
+
#ifdef CONFIG_MX31
v = readl(MX31_OTG_BASE_ADDR + USBCTRL_OTGBASE_OFFSET);
@@ -94,27 +111,34 @@ static int mxc_set_usbcontrol(int port, unsigned int flags)
int ehci_hcd_init(void)
{
- u32 tmp;
struct usb_ehci *ehci;
+#ifdef CONFIG_MX31
+ u32 tmp;
struct clock_control_regs *sc_regs =
(struct clock_control_regs *)CCM_BASE;
tmp = __raw_readl(&sc_regs->ccmr);
__raw_writel(__raw_readl(&sc_regs->ccmr) | (1 << 9), &sc_regs->ccmr) ;
+#endif
udelay(80);
/* Take USB2 */
+#ifdef CONFIG_MX25
+ ehci = (struct usb_ehci *)(IMX_USB_BASE +
+#else
ehci = (struct usb_ehci *)(MX31_OTG_BASE_ADDR +
+#endif
(0x200 * CONFIG_MXC_USB_PORT));
hccr = (struct ehci_hccr *)((uint32_t)&ehci->caplength);
hcor = (struct ehci_hcor *)((uint32_t) hccr +
HC_LENGTH(ehci_readl(&hccr->cr_capbase)));
setbits_le32(&ehci->usbmode, CM_HOST);
+#ifdef CONFIG_MX31
setbits_le32(&ehci->control, USB_EN);
__raw_writel(CONFIG_MXC_USB_PORTSC, &ehci->portsc);
-
+#endif
mxc_set_usbcontrol(CONFIG_MXC_USB_PORT, CONFIG_MXC_USB_FLAGS);
udelay(10000);
--
1.7.0.4
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