--- /dev/null
+/*
+ * Copyright (C) 2010 Marek Vasut <marek.vasut@gmail.com>
+ *
+ * (C) Copyright 2009 Freescale Semiconductor, Inc.
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <usb.h>
+#include <asm/io.h>
+#include <asm/arch/imx-regs.h>
+#include <asm/arch/iomux-mx51.h>
+#include <asm/gpio.h>
+#include <usb/ehci-fsl.h>
+#include <usb/ulpi.h>
+#include <errno.h>
+
+#include "../../../drivers/usb/host/ehci.h"
+
+/*
+ * Configure the USB H1 and USB H2 IOMUX
+ */
+void setup_iomux_usb(void)
+{
+ static const iomux_v3_cfg_t usb_h1_pads[] = {
+ MX51_PAD_USBH1_CLK__USBH1_CLK,
+ MX51_PAD_USBH1_DIR__USBH1_DIR,
+ MX51_PAD_USBH1_STP__USBH1_STP,
+ MX51_PAD_USBH1_NXT__USBH1_NXT,
+ MX51_PAD_USBH1_DATA0__USBH1_DATA0,
+ MX51_PAD_USBH1_DATA1__USBH1_DATA1,
+ MX51_PAD_USBH1_DATA2__USBH1_DATA2,
+ MX51_PAD_USBH1_DATA3__USBH1_DATA3,
+ MX51_PAD_USBH1_DATA4__USBH1_DATA4,
+ MX51_PAD_USBH1_DATA5__USBH1_DATA5,
+ MX51_PAD_USBH1_DATA6__USBH1_DATA6,
+ MX51_PAD_USBH1_DATA7__USBH1_DATA7,
+ };
+
+ static const iomux_v3_cfg_t usb_pads[] = {
+ MX51_PAD_EIM_D27__GPIO2_9, /* USB PHY reset */
+ MX51_PAD_GPIO1_5__GPIO1_5, /* USB HUB reset */
+ NEW_PAD_CTRL(MX51_PAD_EIM_A22__GPIO2_16, 0), /* WIFI /EN */
+ NEW_PAD_CTRL(MX51_PAD_EIM_A16__GPIO2_10, 0), /* WIFI RESET */
+ NEW_PAD_CTRL(MX51_PAD_EIM_A17__GPIO2_11, 0), /* BT /EN */
+ };
+
+ imx_iomux_v3_setup_multiple_pads(usb_h1_pads, ARRAY_SIZE(usb_h1_pads));
+
+ if (machine_is_efikasb()) {
+ static const iomux_v3_cfg_t usb_h2_pads[] = {
+ MX51_PAD_EIM_A24__USBH2_CLK,
+ MX51_PAD_EIM_A25__USBH2_DIR,
+ MX51_PAD_EIM_A26__USBH2_STP,
+ MX51_PAD_EIM_A27__USBH2_NXT,
+ MX51_PAD_EIM_D16__USBH2_DATA0,
+ MX51_PAD_EIM_D17__USBH2_DATA1,
+ MX51_PAD_EIM_D18__USBH2_DATA2,
+ MX51_PAD_EIM_D19__USBH2_DATA3,
+ MX51_PAD_EIM_D20__USBH2_DATA4,
+ MX51_PAD_EIM_D21__USBH2_DATA5,
+ MX51_PAD_EIM_D22__USBH2_DATA6,
+ MX51_PAD_EIM_D23__USBH2_DATA7,
+ };
+
+ imx_iomux_v3_setup_multiple_pads(usb_h2_pads,
+ ARRAY_SIZE(usb_h2_pads));
+ }
+
+ imx_iomux_v3_setup_multiple_pads(usb_pads, ARRAY_SIZE(usb_pads));
+}
+
+/*
+ * Enable devices connected to USB BUSes
+ */
+static void efika_usb_enable_devices(void)
+{
+ /* Enable Bluetooth */
+ gpio_direction_output(IMX_GPIO_NR(2, 11), 0);
+ udelay(10000);
+ gpio_set_value(IMX_GPIO_NR(2, 11), 1);
+
+ /* Enable WiFi */
+ gpio_direction_output(IMX_GPIO_NR(2, 16), 1);
+ udelay(10000);
+
+ /* Reset the WiFi chip */
+ gpio_direction_output(IMX_GPIO_NR(2, 10), 0);
+ udelay(10000);
+ gpio_set_value(IMX_GPIO_NR(2, 10), 1);
+}
+
+/*
+ * Reset USB HUB (or HUBs on EfikaSB)
+ */
+static void efika_usb_hub_reset(void)
+{
+ /* HUB reset */
+ gpio_direction_output(IMX_GPIO_NR(1, 5), 1);
+ udelay(1000);
+ gpio_set_value(IMX_GPIO_NR(1, 5), 0);
+ udelay(1000);
+ gpio_set_value(IMX_GPIO_NR(1, 5), 1);
+}
+
+/*
+ * Reset USB PHY (or PHYs on EfikaSB)
+ */
+static void efika_usb_phy_reset(void)
+{
+ /* SMSC 3317 PHY reset */
+ gpio_direction_output(IMX_GPIO_NR(2, 9), 0);
+ udelay(1000);
+ gpio_set_value(IMX_GPIO_NR(2, 9), 1);
+}
+
+static void efika_ehci_init(struct usb_ehci *ehci, uint32_t stp_gpio,
+ iomux_v3_cfg_t stp_pad_gpio,
+ iomux_v3_cfg_t stp_pad_usb)
+{
+ int ret;
+ struct ulpi_regs *ulpi = (struct ulpi_regs *)0;
+ struct ulpi_viewport ulpi_vp;
+
+ imx_iomux_v3_setup_pad(stp_pad_gpio);
+ gpio_direction_output(stp_gpio, 0);
+ udelay(1000);
+ gpio_set_value(stp_gpio, 1);
+ udelay(1000);
+
+ imx_iomux_v3_setup_pad(stp_pad_usb);
+ udelay(10000);
+
+ ulpi_vp.viewport_addr = (u32)&ehci->ulpi_viewpoint;
+ ulpi_vp.port_num = 0;
+
+ ret = ulpi_init(&ulpi_vp);
+ if (ret) {
+ printf("Efika USB ULPI initialization failed\n");
+ return;
+ }
+
+ /* ULPI set flags */
+ ulpi_write(&ulpi_vp, &ulpi->otg_ctrl,
+ ULPI_OTG_DP_PULLDOWN | ULPI_OTG_DM_PULLDOWN |
+ ULPI_OTG_EXTVBUSIND);
+ ulpi_write(&ulpi_vp, &ulpi->function_ctrl,
+ ULPI_FC_FULL_SPEED | ULPI_FC_OPMODE_NORMAL |
+ ULPI_FC_SUSPENDM);
+ ulpi_write(&ulpi_vp, &ulpi->iface_ctrl, 0);
+
+ /* Set VBus */
+ ulpi_write(&ulpi_vp, &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(&ulpi_vp, &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;
+ struct ulpi_viewport ulpi_vp;
+
+ ulpi_vp.viewport_addr = (u32)&ehci->ulpi_viewpoint;
+ ulpi_vp.port_num = 0;
+
+ ulpi_write(&ulpi_vp, &ulpi->otg_ctrl_set, ULPI_OTG_CHRGVBUS);
+
+ mdelay(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, IMX_GPIO_NR(1, 27),
+ MX51_PAD_USBH1_STP__GPIO1_27,
+ MX51_PAD_USBH1_STP__USBH1_STP);
+ } else if ((port == 2) && machine_is_efikasb()) {
+ efika_ehci_init(ehci, IMX_GPIO_NR(2, 20),
+ MX51_PAD_EIM_A26__GPIO2_20,
+ MX51_PAD_EIM_A26__USBH2_STP);
+ }
+
+ if (port)
+ mdelay(10);
+}
+
+/*
+ * Ethernet on the Smarttop is on the USB bus. Rather than give an error about
+ * "CPU Net Initialization Failed", just pass this test since no other settings
+ * are required. Smartbook doesn't have built-in Ethernet but we will let it
+ * pass anyway considering someone may have plugged in a USB stick and all
+ * they need to do is run "usb start".
+ */
+int board_eth_init(bd_t *bis)
+{
+ return 0;
+}
Code Review / kvmfornfv.git / blobdiff