static void otg_set_utmi_xcvr(void)
{
u32 tmp;
struct clk *usb_clk;
/* Stop then Reset */
UOG_USBCMD &= ~UCMD_RUN_STOP;
while (UOG_USBCMD & UCMD_RUN_STOP) ;
UOG_USBCMD |= UCMD_RESET;
while ((UOG_USBCMD) & (UCMD_RESET)) ;
if (cpu_is_mx51()) {
/* OTG Polarity of Overcurrent is Low active */
USB_PHY_CTR_FUNC |= USB_UTMI_PHYCTRL_OC_POL;
/* Enable OTG Overcurrent Event */
USB_PHY_CTR_FUNC &= ~USB_UTMI_PHYCTRL_OC_DIS;
} else {
/* USBOTG_PWR low active */
USBCTRL &= ~UCTRL_PP;
/* OverCurrent Polarity is Low Active */
USBCTRL &= ~UCTRL_OCPOL;
/* OTG Lock Disable */
USBCTRL |= UCTRL_OLOCKD;
}
USBCTRL &= ~UCTRL_OPM; /* OTG Power Mask */
/* set UTMI xcvr */
tmp = UOG_PORTSC1 & ~PORTSC_PTS_MASK;
tmp |= PORTSC_PTS_UTMI;
UOG_PORTSC1 = tmp;
if (cpu_is_mx51()) {
/* Set the PHY clock to 19.2MHz */
USB_PHY_CTR_FUNC2 &= ~USB_UTMI_PHYCTRL2_PLLDIV_MASK;
USB_PHY_CTR_FUNC2 |= 0x01;
} else if (machine_is_mx35_3ds()) {
/* Enable UTMI interface in PHY control Reg */
USB_PHY_CTR_FUNC |= USB_UTMI_PHYCTRL_UTMI_ENABLE;
} else if(machine_is_mx37_3ds()) {
printk("before change USB_PHY_CTR_FUNC2 = 0x%x \n", USB_PHY_CTR_FUNC2);
USB_PHY_CTR_FUNC2 &= ~(3<<19);
USB_PHY_CTR_FUNC2 |= (0<<19);
//USB_PHY_CTR_FUNC2 &= ~(3<<19);
//USB_PHY_CTR_FUNC2 |= (1<<19);
//USB_PHY_CTR_FUNC2 &= ~(3<<19);
//USB_PHY_CTR_FUNC2 |= (2<<19);
//USB_PHY_CTR_FUNC2 &= ~(3<<19);
//USB_PHY_CTR_FUNC2 |= (3<<19);
printk("USB_PHY_CTR_FUNC2 = 0x%x \n", USB_PHY_CTR_FUNC2);
}
/* need to reset the controller here so that the ID pin
* is correctly detected.
*/
/* Stop then Reset */
UOG_USBCMD &= ~UCMD_RUN_STOP;
while (UOG_USBCMD & UCMD_RUN_STOP) ;
UOG_USBCMD |= UCMD_RESET;
while ((UOG_USBCMD) & (UCMD_RESET)) ;
/* allow controller to reset, and leave time for
* the ULPI transceiver to reset too.
*/
msleep(100);
if (cpu_is_mx37()) {
usb_clk = clk_get(NULL, "usboh2_clk");
clk_disable(usb_clk);
clk_put(usb_clk);
/* fix USB PHY Power Gating leakage issue for i.MX37 */
USB_PHY_CTR_FUNC &= ~USB_UTMI_PHYCTRL_CHGRDETON;
USB_PHY_CTR_FUNC &= ~USB_UTMI_PHYCTRL_CHGRDETEN;
UOG_PORTSC1 |= PORTSC_PHCD;
}
}
static void otg_set_utmi_xcvr(void)
{
u32 tmp;
/* Stop then Reset */
UOG_USBCMD &= ~UCMD_RUN_STOP;
while (UOG_USBCMD & UCMD_RUN_STOP)
;
UOG_USBCMD |= UCMD_RESET;
while ((UOG_USBCMD) & (UCMD_RESET))
;
if (cpu_is_mx53())
USB_PHY_CTR_FUNC |= USB_UTMI_PHYCTRL_OC_DIS;
if (cpu_is_mx51()) {
if (machine_is_mx51_3ds()) {
/* OTG Polarity of Overcurrent is Low active */
USB_PHY_CTR_FUNC |= USB_UTMI_PHYCTRL_OC_POL;
/* Enable OTG Overcurrent Event */
USB_PHY_CTR_FUNC &= ~USB_UTMI_PHYCTRL_OC_DIS;
} else {
/* BBG is not using OC */
USB_PHY_CTR_FUNC |= USB_UTMI_PHYCTRL_OC_DIS;
}
} else if (cpu_is_mx25()) {
USBCTRL |= UCTRL_OCPOL;
USBCTRL &= ~UCTRL_PP;
} else if (cpu_is_mx50()) {
USB_PHY_CTR_FUNC |= USB_UTMI_PHYCTRL_OC_DIS;
} else {
/* USBOTG_PWR low active */
USBCTRL &= ~UCTRL_PP;
/* OverCurrent Polarity is Low Active */
USBCTRL &= ~UCTRL_OCPOL;
if (cpu_is_mx35_rev(CHIP_REV_2_0) < 0)
/* OTG Lock Disable */
USBCTRL |= UCTRL_OLOCKD;
}
if (cpu_is_mx51())
USBCTRL &= ~UCTRL_OPM; /* OTG Power Mask */
USBCTRL &= ~UCTRL_OWIE; /* OTG Wakeup Intr Disable */
/* set UTMI xcvr */
tmp = UOG_PORTSC1 & ~PORTSC_PTS_MASK;
tmp |= PORTSC_PTS_UTMI;
UOG_PORTSC1 = tmp;
if (cpu_is_mx51()) {
/* Set the PHY clock to 19.2MHz */
USB_PHY_CTR_FUNC2 &= ~USB_UTMI_PHYCTRL2_PLLDIV_MASK;
USB_PHY_CTR_FUNC2 |= 0x01;
} else if (machine_is_mx37_3ds()) {
/* Reference voltage for HS disconnect envelope detector */
/* adjust the Squelch level */
USB_PHY_CTR_FUNC2 &= ~(USB_UTMI_PHYCTRL2_HSDEVSEL_MASK <<
USB_UTMI_PHYCTRL2_HSDEVSEL_SHIFT);
}
/* Workaround an IC issue for ehci driver:
* when turn off root hub port power, EHCI set
* PORTSC reserved bits to be 0, but PTW with 0
* means 8 bits tranceiver width, here change
* it back to be 16 bits and do PHY diable and
* then enable.
*/
UOG_PORTSC1 |= PORTSC_PTW;
if (cpu_is_mx35() || cpu_is_mx25()) {
/* Enable UTMI interface in PHY control Reg */
USB_PHY_CTR_FUNC &= ~USB_UTMI_PHYCTRL_UTMI_ENABLE;
USB_PHY_CTR_FUNC |= USB_UTMI_PHYCTRL_UTMI_ENABLE;
}
/* need to reset the controller here so that the ID pin
* is correctly detected.
*/
/* Stop then Reset */
UOG_USBCMD &= ~UCMD_RUN_STOP;
while (UOG_USBCMD & UCMD_RUN_STOP)
;
UOG_USBCMD |= UCMD_RESET;
while ((UOG_USBCMD) & (UCMD_RESET))
;
/* allow controller to reset, and leave time for
* the ULPI transceiver to reset too.
*/
msleep(100);
if (cpu_is_mx37()) {
/* fix USB PHY Power Gating leakage issue for i.MX37 */
USB_PHY_CTR_FUNC &= ~USB_UTMI_PHYCTRL_CHGRDETON;
USB_PHY_CTR_FUNC &= ~USB_UTMI_PHYCTRL_CHGRDETEN;
}
/* Turn off the usbpll for UTMI tranceivers */
clk_disable(usb_clk);
}
