mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-02 01:19:49 +00:00
3426a62a16
There is no change of behavior, except for older silicon revisions for which support is removed. Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com> Tested-by: Matt Sealey <matt@genesi-usa.com>
244 lines
6.3 KiB
C
244 lines
6.3 KiB
C
/*
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* Copyright (C) 2010 Marek Vasut <marek.vasut@gmail.com>
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*
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* (C) Copyright 2009 Freescale Semiconductor, Inc.
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <common.h>
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#include <usb.h>
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#include <asm/io.h>
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#include <asm/arch/imx-regs.h>
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#include <asm/arch/iomux-mx51.h>
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#include <asm/gpio.h>
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#include <usb/ehci-fsl.h>
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#include <usb/ulpi.h>
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#include <errno.h>
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#include "../../../drivers/usb/host/ehci.h"
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/*
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* Configure the USB H1 and USB H2 IOMUX
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*/
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void setup_iomux_usb(void)
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{
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static const iomux_v3_cfg_t usb_h1_pads[] = {
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MX51_PAD_USBH1_CLK__USBH1_CLK,
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MX51_PAD_USBH1_DIR__USBH1_DIR,
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MX51_PAD_USBH1_STP__USBH1_STP,
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MX51_PAD_USBH1_NXT__USBH1_NXT,
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MX51_PAD_USBH1_DATA0__USBH1_DATA0,
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MX51_PAD_USBH1_DATA1__USBH1_DATA1,
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MX51_PAD_USBH1_DATA2__USBH1_DATA2,
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MX51_PAD_USBH1_DATA3__USBH1_DATA3,
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MX51_PAD_USBH1_DATA4__USBH1_DATA4,
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MX51_PAD_USBH1_DATA5__USBH1_DATA5,
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MX51_PAD_USBH1_DATA6__USBH1_DATA6,
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MX51_PAD_USBH1_DATA7__USBH1_DATA7,
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};
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static const iomux_v3_cfg_t usb_pads[] = {
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MX51_PAD_EIM_D27__GPIO2_9, /* USB PHY reset */
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MX51_PAD_GPIO1_5__GPIO1_5, /* USB HUB reset */
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NEW_PAD_CTRL(MX51_PAD_EIM_A22__GPIO2_16, 0), /* WIFI /EN */
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NEW_PAD_CTRL(MX51_PAD_EIM_A16__GPIO2_10, 0), /* WIFI RESET */
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NEW_PAD_CTRL(MX51_PAD_EIM_A17__GPIO2_11, 0), /* BT /EN */
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};
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imx_iomux_v3_setup_multiple_pads(usb_h1_pads, ARRAY_SIZE(usb_h1_pads));
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if (machine_is_efikasb()) {
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static const iomux_v3_cfg_t usb_h2_pads[] = {
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MX51_PAD_EIM_A24__USBH2_CLK,
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MX51_PAD_EIM_A25__USBH2_DIR,
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MX51_PAD_EIM_A26__USBH2_STP,
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MX51_PAD_EIM_A27__USBH2_NXT,
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MX51_PAD_EIM_D16__USBH2_DATA0,
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MX51_PAD_EIM_D17__USBH2_DATA1,
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MX51_PAD_EIM_D18__USBH2_DATA2,
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MX51_PAD_EIM_D19__USBH2_DATA3,
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MX51_PAD_EIM_D20__USBH2_DATA4,
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MX51_PAD_EIM_D21__USBH2_DATA5,
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MX51_PAD_EIM_D22__USBH2_DATA6,
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MX51_PAD_EIM_D23__USBH2_DATA7,
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};
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imx_iomux_v3_setup_multiple_pads(usb_h2_pads,
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ARRAY_SIZE(usb_h2_pads));
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}
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imx_iomux_v3_setup_multiple_pads(usb_pads, ARRAY_SIZE(usb_pads));
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}
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/*
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* Enable devices connected to USB BUSes
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*/
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static void efika_usb_enable_devices(void)
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{
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/* Enable Bluetooth */
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gpio_direction_output(IMX_GPIO_NR(2, 11), 0);
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udelay(10000);
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gpio_set_value(IMX_GPIO_NR(2, 11), 1);
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/* Enable WiFi */
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gpio_direction_output(IMX_GPIO_NR(2, 16), 1);
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udelay(10000);
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/* Reset the WiFi chip */
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gpio_direction_output(IMX_GPIO_NR(2, 10), 0);
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udelay(10000);
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gpio_set_value(IMX_GPIO_NR(2, 10), 1);
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}
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/*
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* Reset USB HUB (or HUBs on EfikaSB)
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*/
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static void efika_usb_hub_reset(void)
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{
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/* HUB reset */
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gpio_direction_output(IMX_GPIO_NR(1, 5), 1);
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udelay(1000);
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gpio_set_value(IMX_GPIO_NR(1, 5), 0);
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udelay(1000);
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gpio_set_value(IMX_GPIO_NR(1, 5), 1);
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}
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/*
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* Reset USB PHY (or PHYs on EfikaSB)
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*/
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static void efika_usb_phy_reset(void)
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{
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/* SMSC 3317 PHY reset */
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gpio_direction_output(IMX_GPIO_NR(2, 9), 0);
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udelay(1000);
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gpio_set_value(IMX_GPIO_NR(2, 9), 1);
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}
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static void efika_ehci_init(struct usb_ehci *ehci, uint32_t stp_gpio,
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iomux_v3_cfg_t stp_pad_gpio,
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iomux_v3_cfg_t stp_pad_usb)
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{
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int ret;
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struct ulpi_regs *ulpi = (struct ulpi_regs *)0;
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struct ulpi_viewport ulpi_vp;
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imx_iomux_v3_setup_pad(stp_pad_gpio);
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gpio_direction_output(stp_gpio, 0);
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udelay(1000);
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gpio_set_value(stp_gpio, 1);
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udelay(1000);
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imx_iomux_v3_setup_pad(stp_pad_usb);
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udelay(10000);
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ulpi_vp.viewport_addr = (u32)&ehci->ulpi_viewpoint;
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ulpi_vp.port_num = 0;
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ret = ulpi_init(&ulpi_vp);
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if (ret) {
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printf("Efika USB ULPI initialization failed\n");
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return;
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}
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/* ULPI set flags */
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ulpi_write(&ulpi_vp, &ulpi->otg_ctrl,
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ULPI_OTG_DP_PULLDOWN | ULPI_OTG_DM_PULLDOWN |
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ULPI_OTG_EXTVBUSIND);
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ulpi_write(&ulpi_vp, &ulpi->function_ctrl,
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ULPI_FC_FULL_SPEED | ULPI_FC_OPMODE_NORMAL |
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ULPI_FC_SUSPENDM);
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ulpi_write(&ulpi_vp, &ulpi->iface_ctrl, 0);
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/* Set VBus */
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ulpi_write(&ulpi_vp, &ulpi->otg_ctrl_set,
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ULPI_OTG_DRVVBUS | ULPI_OTG_DRVVBUS_EXT);
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/*
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* Set VBusChrg
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*
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* NOTE: This violates USB specification, but otherwise, USB on Efika
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* doesn't work.
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*/
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ulpi_write(&ulpi_vp, &ulpi->otg_ctrl_set, ULPI_OTG_CHRGVBUS);
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}
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int board_ehci_hcd_init(int port)
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{
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/* Init iMX51 EHCI */
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efika_usb_phy_reset();
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efika_usb_hub_reset();
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efika_usb_enable_devices();
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return 0;
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}
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void ehci_powerup_fixup(uint32_t *status_reg, uint32_t *reg)
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{
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uint32_t port = OTG_BASE_ADDR + (0x200 * CONFIG_MXC_USB_PORT);
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struct usb_ehci *ehci = (struct usb_ehci *)port;
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struct ulpi_regs *ulpi = (struct ulpi_regs *)0;
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struct ulpi_viewport ulpi_vp;
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ulpi_vp.viewport_addr = (u32)&ehci->ulpi_viewpoint;
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ulpi_vp.port_num = 0;
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ulpi_write(&ulpi_vp, &ulpi->otg_ctrl_set, ULPI_OTG_CHRGVBUS);
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mdelay(50);
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/* terminate the reset */
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*reg = ehci_readl(status_reg);
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*reg |= EHCI_PS_PE;
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}
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void board_ehci_hcd_postinit(struct usb_ehci *ehci, int port)
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{
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uint32_t tmp;
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if (port == 0) {
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/* Adjust UTMI PHY frequency to 24MHz */
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tmp = readl(OTG_BASE_ADDR + 0x80c);
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tmp = (tmp & ~0x3) | 0x01;
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writel(tmp, OTG_BASE_ADDR + 0x80c);
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} else if (port == 1) {
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efika_ehci_init(ehci, IMX_GPIO_NR(1, 27),
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MX51_PAD_USBH1_STP__GPIO1_27,
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MX51_PAD_USBH1_STP__USBH1_STP);
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} else if ((port == 2) && machine_is_efikasb()) {
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efika_ehci_init(ehci, IMX_GPIO_NR(2, 20),
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MX51_PAD_EIM_A26__GPIO2_20,
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MX51_PAD_EIM_A26__USBH2_STP);
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}
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if (port)
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mdelay(10);
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}
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/*
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* Ethernet on the Smarttop is on the USB bus. Rather than give an error about
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* "CPU Net Initialization Failed", just pass this test since no other settings
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* are required. Smartbook doesn't have built-in Ethernet but we will let it
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* pass anyway considering someone may have plugged in a USB stick and all
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* they need to do is run "usb start".
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*/
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int board_eth_init(bd_t *bis)
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{
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return 0;
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}
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