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https://github.com/brain-hackers/u-boot-brain
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![Simon Glass](/assets/img/avatar_default.png)
These are a pain with driver model because we might have different EHCI drivers which want to implement them differently. Now that they use consistent function signatures, we can in good conscience move them to a struct. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Marek Vasut <marex@denx.de> Fix non-driver-model EHCI to set up the EHCI operations correctly: Signed-off-by: Tom Rini <trini@konsulko.com>
231 lines
5.7 KiB
C
231 lines
5.7 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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* SPDX-License-Identifier: GPL-2.0+
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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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/* This overrides a weak function */
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void mx5_ehci_powerup_fixup(struct ehci_ctrl *ctrl, uint32_t *status_reg,
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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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