static int omap_uhh_reset(void)
{
-/*
- * Soft resetting the UHH module causes instability issues on
- * all OMAPs so we just avoid it.
- *
- * See OMAP36xx Errata
- * i571: USB host EHCI may stall when entering smart-standby mode
- * i660: USBHOST Configured In Smart-Idle Can Lead To a Deadlock
- *
- * On OMAP4/5, soft-resetting the UHH module will put it into
- * Smart-Idle mode and lead to a deadlock.
- *
- * On OMAP3, this doesn't seem to be the case but still instabilities
- * are observed on beagle (3530 ES1.0) if soft-reset is used.
- * e.g. NFS root failures with Linux kernel.
- */
+ int timeout = 0;
+ u32 rev;
+
+ rev = readl(&uhh->rev);
+
+ /* Soft RESET */
+ writel(OMAP_UHH_SYSCONFIG_SOFTRESET, &uhh->sysc);
+
+ switch (rev) {
+ case OMAP_USBHS_REV1:
+ /* Wait for soft RESET to complete */
+ while (!(readl(&uhh->syss) & 0x1)) {
+ if (timeout > 100) {
+ printf("%s: RESET timeout\n", __func__);
+ return -1;
+ }
+ udelay(10);
+ timeout++;
+ }
+
+ /* Set No-Idle, No-Standby */
+ writel(OMAP_UHH_SYSCONFIG_VAL, &uhh->sysc);
+ break;
+
+ default: /* Rev. 2 onwards */
+
+ udelay(2); /* Need to wait before accessing SYSCONFIG back */
+
+ /* Wait for soft RESET to complete */
+ while ((readl(&uhh->sysc) & 0x1)) {
+ if (timeout > 100) {
+ printf("%s: RESET timeout\n", __func__);
+ return -1;
+ }
+ udelay(10);
+ timeout++;
+ }
+
+ writel(OMAP_UHH_SYSCONFIG_VAL, &uhh->sysc);
+ break;
+ }
+
return 0;
}
}
#endif
-inline int __board_usb_init(void)
-{
- return 0;
-}
-int board_usb_init(void) __attribute__((weak, alias("__board_usb_init")));
-
#if defined(CONFIG_OMAP_EHCI_PHY1_RESET_GPIO) || \
defined(CONFIG_OMAP_EHCI_PHY2_RESET_GPIO) || \
defined(CONFIG_OMAP_EHCI_PHY3_RESET_GPIO)
* Based on "drivers/usb/host/ehci-omap.c" from Linux 3.1
* See there for additional Copyrights.
*/
-int omap_ehci_hcd_init(struct omap_usbhs_board_data *usbhs_pdata,
- struct ehci_hccr **hccr, struct ehci_hcor **hcor)
+int omap_ehci_hcd_init(int index, struct omap_usbhs_board_data *usbhs_pdata,
+ struct ehci_hccr **hccr, struct ehci_hcor **hcor)
{
int ret;
unsigned int i, reg = 0, rev = 0;
debug("Initializing OMAP EHCI\n");
- ret = board_usb_init();
+ ret = board_usb_init(index, USB_INIT_HOST);
if (ret < 0)
return ret;