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imx: Add support for USB EHCI on imx25

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Adding support for USB host on imx25 using the internal PHY. Changing the name
of base address define for imx31 to get some unification.

Signed-off-by: Matthias Weisser <weisserm@arcor.de>
This commit is contained in:
Matthias Weisser 2011-07-06 00:28:30 +00:00 committed by Albert ARIBAUD
parent dea5387d98
commit dddb7c9ffd
2 changed files with 26 additions and 9 deletions
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2
arch/arm/include/asm/arch-mx31/imx-regs.h
View File

@ -746,7 +746,7 @@ enum iomux_pins {
#define IRAM_SIZE (16 * 1024)
#define MX31_AIPS1_BASE_ADDR 0x43f00000
#define MX31_OTG_BASE_ADDR (MX31_AIPS1_BASE_ADDR + 0x88000)
#define IMX_USB_BASE (MX31_AIPS1_BASE_ADDR + 0x88000)
/* USB portsc */
/* values for portsc field */

33
drivers/usb/host/ehci-mxc.c
View File

@ -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)
@ -42,12 +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;
#endif
#ifdef CONFIG_MX31
v = readl(MX31_OTG_BASE_ADDR + USBCTRL_OTGBASE_OFFSET);
v = readl(IMX_USB_BASE + USBCTRL_OTGBASE_OFFSET);
switch (port) {
case 0: /* OTG port */
@ -85,36 +100,38 @@ static int mxc_set_usbcontrol(int port, unsigned int flags)
default:
return -EINVAL;
}
writel(v, MX31_OTG_BASE_ADDR +
USBCTRL_OTGBASE_OFFSET);
#endif
return 0;
writel(v, IMX_USB_BASE + USBCTRL_OTGBASE_OFFSET);
return 0;
}
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 */
ehci = (struct usb_ehci *)(MX31_OTG_BASE_ADDR +
ehci = (struct usb_ehci *)(IMX_USB_BASE +
(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);