[U-Boot] [PATCH 3/5] imx: Add support for USB EHCI on imx25

[Matthias Weisser]

Adding support for USB host on imx25 using the internal PHY

Signed-off-by: Matthias Weisser <weisserm at 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