--- /dev/null
+/*
+ * Copyright (C) 2010 Marek Vasut <marek.vasut@gmail.com>
+ *
+ * (C) Copyright 2009 Freescale Semiconductor, Inc.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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
+ */
+
+#include <common.h>
+#include <usb.h>
+#include <asm/io.h>
+#include <asm/arch/imx-regs.h>
+#include <asm/arch/mx5x_pins.h>
+#include <asm/arch/iomux.h>
+#include <asm/gpio.h>
+#include <usb/ehci-fsl.h>
+#include <usb/ulpi.h>
+#include <errno.h>
+
+#include "../../drivers/usb/host/ehci.h"
+
+/* USB pin configuration */
+#define USB_PAD_CONFIG (PAD_CTL_PKE_ENABLE | PAD_CTL_SRE_FAST | \
+ PAD_CTL_DRV_HIGH | PAD_CTL_100K_PU | \
+ PAD_CTL_HYS_ENABLE | PAD_CTL_PUE_PULL)
+
+/*
+ * Configure the USB H1 and USB H2 IOMUX
+ */
+void setup_iomux_usb(void)
+{
+ setup_iomux_usb_h1();
+
+ if (machine_is_efikasb())
+ setup_iomux_usb_h2();
+
+ /* USB PHY reset */
+ mxc_request_iomux(MX51_PIN_EIM_D27, IOMUX_CONFIG_ALT1);
+ mxc_iomux_set_pad(MX51_PIN_EIM_D27, PAD_CTL_PKE_ENABLE |
+ PAD_CTL_SRE_FAST | PAD_CTL_DRV_HIGH);
+
+ /* USB HUB reset */
+ mxc_request_iomux(MX51_PIN_GPIO1_5, IOMUX_CONFIG_ALT0);
+ mxc_iomux_set_pad(MX51_PIN_GPIO1_5, PAD_CTL_PKE_ENABLE |
+ PAD_CTL_SRE_FAST | PAD_CTL_DRV_HIGH);
+
+ /* WIFI EN (act low) */
+ mxc_request_iomux(MX51_PIN_EIM_A22, IOMUX_CONFIG_GPIO);
+ mxc_iomux_set_pad(MX51_PIN_EIM_A22, 0);
+ /* WIFI RESET */
+ mxc_request_iomux(MX51_PIN_EIM_A16, IOMUX_CONFIG_GPIO);
+ mxc_iomux_set_pad(MX51_PIN_EIM_A16, 0);
+ /* BT EN (act low) */
+ mxc_request_iomux(MX51_PIN_EIM_A17, IOMUX_CONFIG_GPIO);
+ mxc_iomux_set_pad(MX51_PIN_EIM_A17, 0);
+}
+
+/*
+ * Enable devices connected to USB BUSes
+ */
+static void efika_usb_enable_devices(void)
+{
+ /* Enable Bluetooth */
+ gpio_direction_output(IOMUX_TO_GPIO(MX51_PIN_EIM_A17), 0);
+ udelay(10000);
+ gpio_set_value(IOMUX_TO_GPIO(MX51_PIN_EIM_A17), 1);
+
+ /* Enable WiFi */
+ gpio_direction_output(IOMUX_TO_GPIO(MX51_PIN_EIM_A22), 1);
+ udelay(10000);
+
+ /* Reset the WiFi chip */
+ gpio_direction_output(IOMUX_TO_GPIO(MX51_PIN_EIM_A16), 0);
+ udelay(10000);
+ gpio_set_value(IOMUX_TO_GPIO(MX51_PIN_EIM_A16), 1);
+}
+
+/*
+ * Reset USB HUB (or HUBs on EfikaSB)
+ */
+static void efika_usb_hub_reset(void)
+{
+ /* HUB reset */
+ gpio_direction_output(IOMUX_TO_GPIO(MX51_PIN_GPIO1_5), 1);
+ udelay(1000);
+ gpio_set_value(IOMUX_TO_GPIO(MX51_PIN_GPIO1_5), 0);
+ udelay(1000);
+ gpio_set_value(IOMUX_TO_GPIO(MX51_PIN_GPIO1_5), 1);
+}
+
+/*
+ * Reset USB PHY (or PHYs on EfikaSB)
+ */
+static void efika_usb_phy_reset(void)
+{
+ /* SMSC 3317 PHY reset */
+ gpio_direction_output(IOMUX_TO_GPIO(MX51_PIN_EIM_D27), 0);
+ udelay(1000);
+ gpio_set_value(IOMUX_TO_GPIO(MX51_PIN_EIM_D27), 1);
+}
+
+static void efika_ehci_init(struct usb_ehci *ehci, uint32_t stp_gpio,
+ uint32_t alt0, uint32_t alt1)
+{
+ int ret;
+ struct ulpi_regs *ulpi = (struct ulpi_regs *)0;
+
+ mxc_request_iomux(stp_gpio, alt0);
+ mxc_iomux_set_pad(stp_gpio, PAD_CTL_DRV_HIGH |
+ PAD_CTL_PKE_ENABLE | PAD_CTL_SRE_FAST);
+ gpio_direction_output(IOMUX_TO_GPIO(stp_gpio), 0);
+ udelay(1000);
+ gpio_set_value(IOMUX_TO_GPIO(stp_gpio), 1);
+ udelay(1000);
+
+ mxc_request_iomux(stp_gpio, alt1);
+ mxc_iomux_set_pad(stp_gpio, USB_PAD_CONFIG);
+ udelay(10000);
+
+ ret = ulpi_init((u32)&ehci->ulpi_viewpoint);
+ if (ret) {
+ printf("Efika USB ULPI initialization failed\n");
+ return;
+ }
+
+ /* ULPI set flags */
+ ulpi_write((u32)&ehci->ulpi_viewpoint, &ulpi->otg_ctrl,
+ ULPI_OTG_DP_PULLDOWN | ULPI_OTG_DM_PULLDOWN |
+ ULPI_OTG_EXTVBUSIND);
+ ulpi_write((u32)&ehci->ulpi_viewpoint, &ulpi->function_ctrl,
+ ULPI_FC_FULL_SPEED | ULPI_FC_OPMODE_NORMAL |
+ ULPI_FC_SUSPENDM);
+ ulpi_write((u32)&ehci->ulpi_viewpoint, &ulpi->iface_ctrl, 0);
+
+ /* Set VBus */
+ ulpi_write((u32)&ehci->ulpi_viewpoint, &ulpi->otg_ctrl_set,
+ ULPI_OTG_DRVVBUS | ULPI_OTG_DRVVBUS_EXT);
+
+ /*
+ * Set VBusChrg
+ *
+ * NOTE: This violates USB specification, but otherwise, USB on Efika
+ * doesn't work.
+ */
+ ulpi_write((u32)&ehci->ulpi_viewpoint, &ulpi->otg_ctrl_set,
+ ULPI_OTG_CHRGVBUS);
+}
+
+int board_ehci_hcd_init(int port)
+{
+ /* Init iMX51 EHCI */
+ efika_usb_phy_reset();
+ efika_usb_hub_reset();
+ efika_usb_enable_devices();
+
+ return 0;
+}
+
+void ehci_powerup_fixup(uint32_t *status_reg, uint32_t *reg)
+{
+ uint32_t port = OTG_BASE_ADDR + (0x200 * CONFIG_MXC_USB_PORT);
+ struct usb_ehci *ehci = (struct usb_ehci *)port;
+ struct ulpi_regs *ulpi = (struct ulpi_regs *)0;
+
+ ulpi_write((u32)&ehci->ulpi_viewpoint, &ulpi->otg_ctrl_set,
+ ULPI_OTG_CHRGVBUS);
+
+ wait_ms(50);
+
+ /* terminate the reset */
+ *reg = ehci_readl(status_reg);
+ *reg |= EHCI_PS_PE;
+}
+
+void board_ehci_hcd_postinit(struct usb_ehci *ehci, int port)
+{
+ uint32_t tmp;
+
+ if (port == 0) {
+ /* Adjust UTMI PHY frequency to 24MHz */
+ tmp = readl(OTG_BASE_ADDR + 0x80c);
+ tmp = (tmp & ~0x3) | 0x01;
+ writel(tmp, OTG_BASE_ADDR + 0x80c);
+ } else if (port == 1) {
+ efika_ehci_init(ehci, MX51_PIN_USBH1_STP,
+ IOMUX_CONFIG_ALT2, IOMUX_CONFIG_ALT0);
+ } else if ((port == 2) && machine_is_efikasb()) {
+ efika_ehci_init(ehci, MX51_PIN_EIM_A26,
+ IOMUX_CONFIG_ALT1, IOMUX_CONFIG_ALT2);
+ }
+
+ if (port)
+ mdelay(10);
+}
projects / karo-tx-uboot.git / commitdiff