*
* Author: Tor Krill tor@excito.com
*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
+ * SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <pci.h>
#include <usb.h>
#include <asm/io.h>
-#include <usb/ehci-fsl.h>
+#include <usb/ehci-ci.h>
#include <hwconfig.h>
+#include <fsl_usb.h>
+#include <fdt_support.h>
#include "ehci.h"
+#ifndef CONFIG_USB_MAX_CONTROLLER_COUNT
+#define CONFIG_USB_MAX_CONTROLLER_COUNT 1
+#endif
+
+static void set_txfifothresh(struct usb_ehci *, u32);
+
/* Check USB PHY clock valid */
static int usb_phy_clk_valid(struct usb_ehci *ehci)
{
*
* Excerpts from linux ehci fsl driver.
*/
-int ehci_hcd_init(int index, struct ehci_hccr **hccr, struct ehci_hcor **hcor)
+int ehci_hcd_init(int index, enum usb_init_type init,
+ struct ehci_hccr **hccr, struct ehci_hcor **hcor)
{
- struct usb_ehci *ehci;
+ struct usb_ehci *ehci = NULL;
const char *phy_type = NULL;
size_t len;
+ char current_usb_controller[5];
#ifdef CONFIG_SYS_FSL_USB_INTERNAL_UTMI_PHY
char usb_phy[5];
usb_phy[0] = '\0';
#endif
+ if (has_erratum_a007075()) {
+ /*
+ * A 5ms delay is needed after applying soft-reset to the
+ * controller to let external ULPI phy come out of reset.
+ * This delay needs to be added before re-initializing
+ * the controller after soft-resetting completes
+ */
+ mdelay(5);
+ }
+ memset(current_usb_controller, '\0', 5);
+ snprintf(current_usb_controller, 4, "usb%d", index+1);
+
+ switch (index) {
+ case 0:
+ ehci = (struct usb_ehci *)CONFIG_SYS_FSL_USB1_ADDR;
+ break;
+ case 1:
+ ehci = (struct usb_ehci *)CONFIG_SYS_FSL_USB2_ADDR;
+ break;
+ default:
+ printf("ERROR: wrong controller index!!\n");
+ return -EINVAL;
+ };
- ehci = (struct usb_ehci *)CONFIG_SYS_FSL_USB_ADDR;
*hccr = (struct ehci_hccr *)((uint32_t)&ehci->caplength);
*hcor = (struct ehci_hcor *)((uint32_t) *hccr +
HC_LENGTH(ehci_readl(&(*hccr)->cr_capbase)));
out_be32(&ehci->snoop2, 0x80000000 | SNOOP_SIZE_2GB);
/* Init phy */
- if (hwconfig_sub("usb1", "phy_type"))
- phy_type = hwconfig_subarg("usb1", "phy_type", &len);
+ if (hwconfig_sub(current_usb_controller, "phy_type"))
+ phy_type = hwconfig_subarg(current_usb_controller,
+ "phy_type", &len);
else
phy_type = getenv("usb_phy_type");
#endif
}
- if (!strcmp(phy_type, "utmi")) {
+ if (!strncmp(phy_type, "utmi", 4)) {
#if defined(CONFIG_SYS_FSL_USB_INTERNAL_UTMI_PHY)
-#if defined(CONFIG_SYS_FSL_USB_DUAL_PHY_ENABLE)
- ccsr_usb_phy_t *usb_phy =
- (void *)CONFIG_SYS_MPC85xx_USB1_PHY_ADDR;
- setbits_be32(&usb_phy->pllprg[1],
- CONFIG_SYS_FSL_USB_PLLPRG2_PHY2_CLK_EN |
- CONFIG_SYS_FSL_USB_PLLPRG2_PHY1_CLK_EN |
- CONFIG_SYS_FSL_USB_PLLPRG2_MFI |
- CONFIG_SYS_FSL_USB_PLLPRG2_PLL_EN);
- setbits_be32(&usb_phy->port1.ctrl,
- CONFIG_SYS_FSL_USB_CTRL_PHY_EN);
- setbits_be32(&usb_phy->port1.drvvbuscfg,
- CONFIG_SYS_FSL_USB_DRVVBUS_CR_EN);
- setbits_be32(&usb_phy->port1.pwrfltcfg,
- CONFIG_SYS_FSL_USB_PWRFLT_CR_EN);
- setbits_be32(&usb_phy->port2.ctrl,
- CONFIG_SYS_FSL_USB_CTRL_PHY_EN);
- setbits_be32(&usb_phy->port2.drvvbuscfg,
- CONFIG_SYS_FSL_USB_DRVVBUS_CR_EN);
- setbits_be32(&usb_phy->port2.pwrfltcfg,
- CONFIG_SYS_FSL_USB_PWRFLT_CR_EN);
-#endif
- setbits_be32(&ehci->control, PHY_CLK_SEL_UTMI);
- setbits_be32(&ehci->control, UTMI_PHY_EN);
+ clrsetbits_be32(&ehci->control, CONTROL_REGISTER_W1C_MASK,
+ PHY_CLK_SEL_UTMI);
+ clrsetbits_be32(&ehci->control, CONTROL_REGISTER_W1C_MASK,
+ UTMI_PHY_EN);
udelay(1000); /* delay required for PHY Clk to appear */
#endif
out_le32(&(*hcor)->or_portsc[0], PORT_PTS_UTMI);
- setbits_be32(&ehci->control, USB_EN);
+ clrsetbits_be32(&ehci->control, CONTROL_REGISTER_W1C_MASK,
+ USB_EN);
} else {
- setbits_be32(&ehci->control, PHY_CLK_SEL_ULPI);
- clrsetbits_be32(&ehci->control, UTMI_PHY_EN, USB_EN);
+ clrsetbits_be32(&ehci->control, CONTROL_REGISTER_W1C_MASK,
+ PHY_CLK_SEL_ULPI);
+ clrsetbits_be32(&ehci->control, UTMI_PHY_EN |
+ CONTROL_REGISTER_W1C_MASK, USB_EN);
udelay(1000); /* delay required for PHY Clk to appear */
if (!usb_phy_clk_valid(ehci))
return -EINVAL;
in_le32(&ehci->usbmode);
+ if (has_erratum_a007798())
+ set_txfifothresh(ehci, TXFIFOTHRESH);
+
+ if (has_erratum_a004477()) {
+ /*
+ * When reset is issued while any ULPI transaction is ongoing
+ * then it may result to corruption of ULPI Function Control
+ * Register which eventually causes phy clock to enter low
+ * power mode which stops the clock. Thus delay is required
+ * before reset to let ongoing ULPI transaction complete.
+ */
+ udelay(1);
+ }
return 0;
}
{
return 0;
}
+
+/*
+ * Setting the value of TXFIFO_THRESH field in TXFILLTUNING register
+ * to counter DDR latencies in writing data into Tx buffer.
+ * This prevents Tx buffer from getting underrun
+ */
+static void set_txfifothresh(struct usb_ehci *ehci, u32 txfifo_thresh)
+{
+ u32 cmd;
+ cmd = ehci_readl(&ehci->txfilltuning);
+ cmd &= ~TXFIFO_THRESH_MASK;
+ cmd |= TXFIFO_THRESH(txfifo_thresh);
+ ehci_writel(&ehci->txfilltuning, cmd);
+}
projects / u-boot / blobdiff