diff options
Diffstat (limited to 'roms/u-boot/board/genesi/mx51_efikamx/efikamx-usb.c')
| -rw-r--r-- | roms/u-boot/board/genesi/mx51_efikamx/efikamx-usb.c | 228 |
1 files changed, 228 insertions, 0 deletions
diff --git a/roms/u-boot/board/genesi/mx51_efikamx/efikamx-usb.c b/roms/u-boot/board/genesi/mx51_efikamx/efikamx-usb.c new file mode 100644 index 00000000..0b431019 --- /dev/null +++ b/roms/u-boot/board/genesi/mx51_efikamx/efikamx-usb.c @@ -0,0 +1,228 @@ +/* + * 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; +} |