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git01.mediatek.com / filogic / uboot / fcabb0b14d19cea436c898efc41f5d6c8b0d0315 / . / board / gateworks / gw_ventana / gw_ventana.c
blob: a68ec69f1886d05e2739cfe65c373d7fa1bc9a71 [file] [log] [blame]
/*
* Copyright (C) 2013 Gateworks Corporation
*
* Author: Tim Harvey <tharvey@gateworks.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <asm/arch/clock.h>
#include <asm/arch/crm_regs.h>
#include <asm/arch/iomux.h>
#include <asm/arch/mx6-pins.h>
#include <asm/arch/mxc_hdmi.h>
#include <asm/arch/sys_proto.h>
#include <asm/gpio.h>
#include <asm/imx-common/boot_mode.h>
#include <asm/imx-common/sata.h>
#include <asm/imx-common/spi.h>
#include <asm/imx-common/video.h>
#include <asm/io.h>
#include <dm.h>
#include <dm/platform_data/serial_mxc.h>
#include <hwconfig.h>
#include <i2c.h>
#include <fdt_support.h>
#include <fsl_esdhc.h>
#include <jffs2/load_kernel.h>
#include <linux/ctype.h>
#include <miiphy.h>
#include <mtd_node.h>
#include <netdev.h>
#include <pci.h>
#include <power/pmic.h>
#include <power/ltc3676_pmic.h>
#include <power/pfuze100_pmic.h>
#include <fdt_support.h>
#include <jffs2/load_kernel.h>
#include <spi_flash.h>
#include "gsc.h"
#include "common.h"
DECLARE_GLOBAL_DATA_PTR;
/*
* EEPROM board info struct populated by read_eeprom so that we only have to
* read it once.
*/
struct ventana_board_info ventana_info;
static int board_type;
/* ENET */
static iomux_v3_cfg_t const enet_pads[] = {
IOMUX_PADS(PAD_ENET_MDIO__ENET_MDIO | MUX_PAD_CTRL(ENET_PAD_CTRL)),
IOMUX_PADS(PAD_ENET_MDC__ENET_MDC | MUX_PAD_CTRL(ENET_PAD_CTRL)),
IOMUX_PADS(PAD_RGMII_TXC__RGMII_TXC | MUX_PAD_CTRL(ENET_PAD_CTRL)),
IOMUX_PADS(PAD_RGMII_TD0__RGMII_TD0 | MUX_PAD_CTRL(ENET_PAD_CTRL)),
IOMUX_PADS(PAD_RGMII_TD1__RGMII_TD1 | MUX_PAD_CTRL(ENET_PAD_CTRL)),
IOMUX_PADS(PAD_RGMII_TD2__RGMII_TD2 | MUX_PAD_CTRL(ENET_PAD_CTRL)),
IOMUX_PADS(PAD_RGMII_TD3__RGMII_TD3 | MUX_PAD_CTRL(ENET_PAD_CTRL)),
IOMUX_PADS(PAD_RGMII_TX_CTL__RGMII_TX_CTL |
MUX_PAD_CTRL(ENET_PAD_CTRL)),
IOMUX_PADS(PAD_ENET_REF_CLK__ENET_TX_CLK |
MUX_PAD_CTRL(ENET_PAD_CTRL)),
IOMUX_PADS(PAD_RGMII_RXC__RGMII_RXC | MUX_PAD_CTRL(ENET_PAD_CTRL)),
IOMUX_PADS(PAD_RGMII_RD0__RGMII_RD0 | MUX_PAD_CTRL(ENET_PAD_CTRL)),
IOMUX_PADS(PAD_RGMII_RD1__RGMII_RD1 | MUX_PAD_CTRL(ENET_PAD_CTRL)),
IOMUX_PADS(PAD_RGMII_RD2__RGMII_RD2 | MUX_PAD_CTRL(ENET_PAD_CTRL)),
IOMUX_PADS(PAD_RGMII_RD3__RGMII_RD3 | MUX_PAD_CTRL(ENET_PAD_CTRL)),
IOMUX_PADS(PAD_RGMII_RX_CTL__RGMII_RX_CTL |
MUX_PAD_CTRL(ENET_PAD_CTRL)),
/* PHY nRST */
IOMUX_PADS(PAD_ENET_TXD0__GPIO1_IO30 | DIO_PAD_CFG),
};
#ifdef CONFIG_CMD_NAND
static iomux_v3_cfg_t const nfc_pads[] = {
IOMUX_PADS(PAD_NANDF_CLE__NAND_CLE | MUX_PAD_CTRL(NO_PAD_CTRL)),
IOMUX_PADS(PAD_NANDF_ALE__NAND_ALE | MUX_PAD_CTRL(NO_PAD_CTRL)),
IOMUX_PADS(PAD_NANDF_WP_B__NAND_WP_B | MUX_PAD_CTRL(NO_PAD_CTRL)),
IOMUX_PADS(PAD_NANDF_RB0__NAND_READY_B | MUX_PAD_CTRL(NO_PAD_CTRL)),
IOMUX_PADS(PAD_NANDF_CS0__NAND_CE0_B | MUX_PAD_CTRL(NO_PAD_CTRL)),
IOMUX_PADS(PAD_SD4_CMD__NAND_RE_B | MUX_PAD_CTRL(NO_PAD_CTRL)),
IOMUX_PADS(PAD_SD4_CLK__NAND_WE_B | MUX_PAD_CTRL(NO_PAD_CTRL)),
IOMUX_PADS(PAD_NANDF_D0__NAND_DATA00 | MUX_PAD_CTRL(NO_PAD_CTRL)),
IOMUX_PADS(PAD_NANDF_D1__NAND_DATA01 | MUX_PAD_CTRL(NO_PAD_CTRL)),
IOMUX_PADS(PAD_NANDF_D2__NAND_DATA02 | MUX_PAD_CTRL(NO_PAD_CTRL)),
IOMUX_PADS(PAD_NANDF_D3__NAND_DATA03 | MUX_PAD_CTRL(NO_PAD_CTRL)),
IOMUX_PADS(PAD_NANDF_D4__NAND_DATA04 | MUX_PAD_CTRL(NO_PAD_CTRL)),
IOMUX_PADS(PAD_NANDF_D5__NAND_DATA05 | MUX_PAD_CTRL(NO_PAD_CTRL)),
IOMUX_PADS(PAD_NANDF_D6__NAND_DATA06 | MUX_PAD_CTRL(NO_PAD_CTRL)),
IOMUX_PADS(PAD_NANDF_D7__NAND_DATA07 | MUX_PAD_CTRL(NO_PAD_CTRL)),
};
static void setup_gpmi_nand(void)
{
struct mxc_ccm_reg *mxc_ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
/* config gpmi nand iomux */
SETUP_IOMUX_PADS(nfc_pads);
/* config gpmi and bch clock to 100 MHz */
clrsetbits_le32(&mxc_ccm->cs2cdr,
MXC_CCM_CS2CDR_ENFC_CLK_PODF_MASK |
MXC_CCM_CS2CDR_ENFC_CLK_PRED_MASK |
MXC_CCM_CS2CDR_ENFC_CLK_SEL_MASK,
MXC_CCM_CS2CDR_ENFC_CLK_PODF(0) |
MXC_CCM_CS2CDR_ENFC_CLK_PRED(3) |
MXC_CCM_CS2CDR_ENFC_CLK_SEL(3));
/* enable gpmi and bch clock gating */
setbits_le32(&mxc_ccm->CCGR4,
MXC_CCM_CCGR4_RAWNAND_U_BCH_INPUT_APB_MASK |
MXC_CCM_CCGR4_RAWNAND_U_GPMI_BCH_INPUT_BCH_MASK |
MXC_CCM_CCGR4_RAWNAND_U_GPMI_BCH_INPUT_GPMI_IO_MASK |
MXC_CCM_CCGR4_RAWNAND_U_GPMI_INPUT_APB_MASK |
MXC_CCM_CCGR4_PL301_MX6QPER1_BCH_OFFSET);
/* enable apbh clock gating */
setbits_le32(&mxc_ccm->CCGR0, MXC_CCM_CCGR0_APBHDMA_MASK);
}
#endif
static void setup_iomux_enet(int gpio)
{
SETUP_IOMUX_PADS(enet_pads);
/* toggle PHY_RST# */
gpio_request(gpio, "phy_rst#");
gpio_direction_output(gpio, 0);
mdelay(10);
gpio_set_value(gpio, 1);
mdelay(100);
}
#ifdef CONFIG_USB_EHCI_MX6
static iomux_v3_cfg_t const usb_pads[] = {
IOMUX_PADS(PAD_GPIO_1__USB_OTG_ID | DIO_PAD_CFG),
IOMUX_PADS(PAD_KEY_COL4__USB_OTG_OC | DIO_PAD_CFG),
/* OTG PWR */
IOMUX_PADS(PAD_EIM_D22__GPIO3_IO22 | DIO_PAD_CFG),
};
int board_ehci_hcd_init(int port)
{
int gpio;
SETUP_IOMUX_PADS(usb_pads);
/* Reset USB HUB */
switch (board_type) {
case GW53xx:
case GW552x:
gpio = (IMX_GPIO_NR(1, 9));
break;
case GW54proto:
case GW54xx:
gpio = (IMX_GPIO_NR(1, 16));
break;
default:
return 0;
}
/* request and toggle hub rst */
gpio_request(gpio, "usb_hub_rst#");
gpio_direction_output(gpio, 0);
mdelay(2);
gpio_set_value(gpio, 1);
return 0;
}
int board_ehci_power(int port, int on)
{
/* enable OTG VBUS */
if (!port && board_type < GW_UNKNOWN) {
if (gpio_cfg[board_type].otgpwr_en)
gpio_set_value(gpio_cfg[board_type].otgpwr_en, on);
}
return 0;
}
#endif /* CONFIG_USB_EHCI_MX6 */
#ifdef CONFIG_MXC_SPI
iomux_v3_cfg_t const ecspi1_pads[] = {
/* SS1 */
IOMUX_PADS(PAD_EIM_D19__GPIO3_IO19 | MUX_PAD_CTRL(SPI_PAD_CTRL)),
IOMUX_PADS(PAD_EIM_D17__ECSPI1_MISO | MUX_PAD_CTRL(SPI_PAD_CTRL)),
IOMUX_PADS(PAD_EIM_D18__ECSPI1_MOSI | MUX_PAD_CTRL(SPI_PAD_CTRL)),
IOMUX_PADS(PAD_EIM_D16__ECSPI1_SCLK | MUX_PAD_CTRL(SPI_PAD_CTRL)),
};
int board_spi_cs_gpio(unsigned bus, unsigned cs)
{
return (bus == 0 && cs == 0) ? (IMX_GPIO_NR(3, 19)) : -1;
}
static void setup_spi(void)
{
gpio_request(IMX_GPIO_NR(3, 19), "spi_cs");
gpio_direction_output(IMX_GPIO_NR(3, 19), 1);
SETUP_IOMUX_PADS(ecspi1_pads);
}
#endif
/* configure eth0 PHY board-specific LED behavior */
int board_phy_config(struct phy_device *phydev)
{
unsigned short val;
/* Marvel 88E1510 */
if (phydev->phy_id == 0x1410dd1) {
/*
* Page 3, Register 16: LED[2:0] Function Control Register
* LED[0] (SPD:Amber) R16_3.3:0 to 0111: on-GbE link
* LED[1] (LNK:Green) R16_3.7:4 to 0001: on-link, blink-activity
*/
phy_write(phydev, MDIO_DEVAD_NONE, 22, 3);
val = phy_read(phydev, MDIO_DEVAD_NONE, 16);
val &= 0xff00;
val |= 0x0017;
phy_write(phydev, MDIO_DEVAD_NONE, 16, val);
phy_write(phydev, MDIO_DEVAD_NONE, 22, 0);
}
/* TI DP83867 */
else if (phydev->phy_id == 0x2000a231) {
/* configure register 0x170 for ref CLKOUT */
phy_write(phydev, MDIO_DEVAD_NONE, 13, 0x001f);
phy_write(phydev, MDIO_DEVAD_NONE, 14, 0x0170);
phy_write(phydev, MDIO_DEVAD_NONE, 13, 0x401f);
val = phy_read(phydev, MDIO_DEVAD_NONE, 14);
val &= ~0x1f00;
val |= 0x0b00; /* chD tx clock*/
phy_write(phydev, MDIO_DEVAD_NONE, 14, val);
}
if (phydev->drv->config)
phydev->drv->config(phydev);
return 0;
}
#ifdef CONFIG_MV88E61XX_SWITCH
int mv88e61xx_hw_reset(struct phy_device *phydev)
{
struct mii_dev *bus = phydev->bus;
/* GPIO[0] output, CLK125 */
debug("enabling RGMII_REFCLK\n");
bus->write(bus, 0x1c /*MV_GLOBAL2*/, 0,
0x1a /*MV_SCRATCH_MISC*/,
(1 << 15) | (0x62 /*MV_GPIO_DIR*/ << 8) | 0xfe);
bus->write(bus, 0x1c /*MV_GLOBAL2*/, 0,
0x1a /*MV_SCRATCH_MISC*/,
(1 << 15) | (0x68 /*MV_GPIO01_CNTL*/ << 8) | 7);
/* RGMII delay - Physical Control register bit[15:14] */
debug("setting port%d RGMII rx/tx delay\n", CONFIG_MV88E61XX_CPU_PORT);
/* forced 1000mbps full-duplex link */
bus->write(bus, 0x10 + CONFIG_MV88E61XX_CPU_PORT, 0, 1, 0xc0fe);
phydev->autoneg = AUTONEG_DISABLE;
phydev->speed = SPEED_1000;
phydev->duplex = DUPLEX_FULL;
/* LED configuration: 7:4-green (8=Activity) 3:0 amber (9=10Link) */
bus->write(bus, 0x10, 0, 0x16, 0x8089);
bus->write(bus, 0x11, 0, 0x16, 0x8089);
bus->write(bus, 0x12, 0, 0x16, 0x8089);
bus->write(bus, 0x13, 0, 0x16, 0x8089);
return 0;
}
#endif // CONFIG_MV88E61XX_SWITCH
int board_eth_init(bd_t *bis)
{
#ifdef CONFIG_FEC_MXC
struct ventana_board_info *info = &ventana_info;
if (test_bit(EECONFIG_ETH0, info->config)) {
setup_iomux_enet(GP_PHY_RST);
cpu_eth_init(bis);
}
#endif
#ifdef CONFIG_E1000
e1000_initialize(bis);
#endif
#ifdef CONFIG_CI_UDC
/* For otg ethernet*/
usb_eth_initialize(bis);
#endif
/* default to the first detected enet dev */
if (!getenv("ethprime")) {
struct eth_device *dev = eth_get_dev_by_index(0);
if (dev) {
setenv("ethprime", dev->name);
printf("set ethprime to %s\n", getenv("ethprime"));
}
}
return 0;
}
#if defined(CONFIG_VIDEO_IPUV3)
static void enable_hdmi(struct display_info_t const *dev)
{
imx_enable_hdmi_phy();
}
static int detect_i2c(struct display_info_t const *dev)
{
return i2c_set_bus_num(dev->bus) == 0 &&
i2c_probe(dev->addr) == 0;
}
static void enable_lvds(struct display_info_t const *dev)
{
struct iomuxc *iomux = (struct iomuxc *)
IOMUXC_BASE_ADDR;
/* set CH0 data width to 24bit (IOMUXC_GPR2:5 0=18bit, 1=24bit) */
u32 reg = readl(&iomux->gpr[2]);
reg |= IOMUXC_GPR2_DATA_WIDTH_CH0_24BIT;
writel(reg, &iomux->gpr[2]);
/* Enable Backlight */
gpio_request(IMX_GPIO_NR(1, 10), "bklt_gpio");
gpio_direction_output(IMX_GPIO_NR(1, 10), 0);
gpio_request(IMX_GPIO_NR(1, 18), "bklt_en");
SETUP_IOMUX_PAD(PAD_SD1_CMD__GPIO1_IO18 | DIO_PAD_CFG);
gpio_direction_output(IMX_GPIO_NR(1, 18), 1);
}
struct display_info_t const displays[] = {{
/* HDMI Output */
.bus = -1,
.addr = 0,
.pixfmt = IPU_PIX_FMT_RGB24,
.detect = detect_hdmi,
.enable = enable_hdmi,
.mode = {
.name = "HDMI",
.refresh = 60,
.xres = 1024,
.yres = 768,
.pixclock = 15385,
.left_margin = 220,
.right_margin = 40,
.upper_margin = 21,
.lower_margin = 7,
.hsync_len = 60,
.vsync_len = 10,
.sync = FB_SYNC_EXT,
.vmode = FB_VMODE_NONINTERLACED
} }, {
/* Freescale MXC-LVDS1: HannStar HSD100PXN1-A00 w/ egalx_ts cont */
.bus = 2,
.addr = 0x4,
.pixfmt = IPU_PIX_FMT_LVDS666,
.detect = detect_i2c,
.enable = enable_lvds,
.mode = {
.name = "Hannstar-XGA",
.refresh = 60,
.xres = 1024,
.yres = 768,
.pixclock = 15385,
.left_margin = 220,
.right_margin = 40,
.upper_margin = 21,
.lower_margin = 7,
.hsync_len = 60,
.vsync_len = 10,
.sync = FB_SYNC_EXT,
.vmode = FB_VMODE_NONINTERLACED
} }, {
/* DLC700JMG-T-4 */
.bus = 0,
.addr = 0,
.detect = NULL,
.enable = enable_lvds,
.pixfmt = IPU_PIX_FMT_LVDS666,
.mode = {
.name = "DLC700JMGT4",
.refresh = 60,
.xres = 1024, /* 1024x600active pixels */
.yres = 600,
.pixclock = 15385, /* 64MHz */
.left_margin = 220,
.right_margin = 40,
.upper_margin = 21,
.lower_margin = 7,
.hsync_len = 60,
.vsync_len = 10,
.sync = FB_SYNC_EXT,
.vmode = FB_VMODE_NONINTERLACED
} }, {
/* DLC800FIG-T-3 */
.bus = 0,
.addr = 0,
.detect = NULL,
.enable = enable_lvds,
.pixfmt = IPU_PIX_FMT_LVDS666,
.mode = {
.name = "DLC800FIGT3",
.refresh = 60,
.xres = 1024, /* 1024x768 active pixels */
.yres = 768,
.pixclock = 15385, /* 64MHz */
.left_margin = 220,
.right_margin = 40,
.upper_margin = 21,
.lower_margin = 7,
.hsync_len = 60,
.vsync_len = 10,
.sync = FB_SYNC_EXT,
.vmode = FB_VMODE_NONINTERLACED
} } };
size_t display_count = ARRAY_SIZE(displays);
static void setup_display(void)
{
struct mxc_ccm_reg *mxc_ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
struct iomuxc *iomux = (struct iomuxc *)IOMUXC_BASE_ADDR;
int reg;
enable_ipu_clock();
imx_setup_hdmi();
/* Turn on LDB0,IPU,IPU DI0 clocks */
reg = __raw_readl(&mxc_ccm->CCGR3);
reg |= MXC_CCM_CCGR3_LDB_DI0_MASK;
writel(reg, &mxc_ccm->CCGR3);
/* set LDB0, LDB1 clk select to 011/011 */
reg = readl(&mxc_ccm->cs2cdr);
reg &= ~(MXC_CCM_CS2CDR_LDB_DI0_CLK_SEL_MASK
|MXC_CCM_CS2CDR_LDB_DI1_CLK_SEL_MASK);
reg |= (3<<MXC_CCM_CS2CDR_LDB_DI0_CLK_SEL_OFFSET)
|(3<<MXC_CCM_CS2CDR_LDB_DI1_CLK_SEL_OFFSET);
writel(reg, &mxc_ccm->cs2cdr);
reg = readl(&mxc_ccm->cscmr2);
reg |= MXC_CCM_CSCMR2_LDB_DI0_IPU_DIV;
writel(reg, &mxc_ccm->cscmr2);
reg = readl(&mxc_ccm->chsccdr);
reg |= (CHSCCDR_CLK_SEL_LDB_DI0
<<MXC_CCM_CHSCCDR_IPU1_DI0_CLK_SEL_OFFSET);
writel(reg, &mxc_ccm->chsccdr);
reg = IOMUXC_GPR2_BGREF_RRMODE_EXTERNAL_RES
|IOMUXC_GPR2_DI1_VS_POLARITY_ACTIVE_HIGH
|IOMUXC_GPR2_DI0_VS_POLARITY_ACTIVE_LOW
|IOMUXC_GPR2_BIT_MAPPING_CH1_SPWG
|IOMUXC_GPR2_DATA_WIDTH_CH1_18BIT
|IOMUXC_GPR2_BIT_MAPPING_CH0_SPWG
|IOMUXC_GPR2_DATA_WIDTH_CH0_18BIT
|IOMUXC_GPR2_LVDS_CH1_MODE_DISABLED
|IOMUXC_GPR2_LVDS_CH0_MODE_ENABLED_DI0;
writel(reg, &iomux->gpr[2]);
reg = readl(&iomux->gpr[3]);
reg = (reg & ~IOMUXC_GPR3_LVDS0_MUX_CTL_MASK)
| (IOMUXC_GPR3_MUX_SRC_IPU1_DI0
<<IOMUXC_GPR3_LVDS0_MUX_CTL_OFFSET);
writel(reg, &iomux->gpr[3]);
/* LVDS Backlight GPIO on LVDS connector - output low */
SETUP_IOMUX_PAD(PAD_SD2_CLK__GPIO1_IO10 | DIO_PAD_CFG);
gpio_direction_output(IMX_GPIO_NR(1, 10), 0);
}
#endif /* CONFIG_VIDEO_IPUV3 */
/* setup board specific PMIC */
int power_init_board(void)
{
setup_pmic();
return 0;
}
#if defined(CONFIG_CMD_PCI)
int imx6_pcie_toggle_reset(void)
{
if (board_type < GW_UNKNOWN) {
uint pin = gpio_cfg[board_type].pcie_rst;
gpio_request(pin, "pci_rst#");
gpio_direction_output(pin, 0);
mdelay(50);
gpio_direction_output(pin, 1);
}
return 0;
}
/*
* Most Ventana boards have a PLX PEX860x PCIe switch onboard and use its
* GPIO's as PERST# signals for its downstream ports - configure the GPIO's
* properly and assert reset for 100ms.
*/
#define MAX_PCI_DEVS 32
struct pci_dev {
pci_dev_t devfn;
unsigned short vendor;
unsigned short device;
unsigned short class;
unsigned short busno; /* subbordinate busno */
struct pci_dev *ppar;
};
struct pci_dev pci_devs[MAX_PCI_DEVS];
int pci_devno;
int pci_bridgeno;
void board_pci_fixup_dev(struct pci_controller *hose, pci_dev_t dev,
unsigned short vendor, unsigned short device,
unsigned short class)
{
int i;
u32 dw;
struct pci_dev *pdev = &pci_devs[pci_devno++];
debug("%s: %02d:%02d.%02d: %04x:%04x\n", __func__,
PCI_BUS(dev), PCI_DEV(dev), PCI_FUNC(dev), vendor, device);
/* store array of devs for later use in device-tree fixup */
pdev->devfn = dev;
pdev->vendor = vendor;
pdev->device = device;
pdev->class = class;
pdev->ppar = NULL;
if (class == PCI_CLASS_BRIDGE_PCI)
pdev->busno = ++pci_bridgeno;
else
pdev->busno = 0;
/* fixup RC - it should be 00:00.0 not 00:01.0 */
if (PCI_BUS(dev) == 0)
pdev->devfn = 0;
/* find dev's parent */
for (i = 0; i < pci_devno; i++) {
if (pci_devs[i].busno == PCI_BUS(pdev->devfn)) {
pdev->ppar = &pci_devs[i];
break;
}
}
/* assert downstream PERST# */
if (vendor == PCI_VENDOR_ID_PLX &&
(device & 0xfff0) == 0x8600 &&
PCI_DEV(dev) == 0 && PCI_FUNC(dev) == 0) {
debug("configuring PLX 860X downstream PERST#\n");
pci_hose_read_config_dword(hose, dev, 0x62c, &dw);
dw |= 0xaaa8; /* GPIO1-7 outputs */
pci_hose_write_config_dword(hose, dev, 0x62c, dw);
pci_hose_read_config_dword(hose, dev, 0x644, &dw);
dw |= 0xfe; /* GPIO1-7 output high */
pci_hose_write_config_dword(hose, dev, 0x644, dw);
mdelay(100);
}
}
#endif /* CONFIG_CMD_PCI */
#ifdef CONFIG_SERIAL_TAG
/*
* called when setting up ATAGS before booting kernel
* populate serialnum from the following (in order of priority):
* serial# env var
* eeprom
*/
void get_board_serial(struct tag_serialnr *serialnr)
{
char *serial = getenv("serial#");
if (serial) {
serialnr->high = 0;
serialnr->low = simple_strtoul(serial, NULL, 10);
} else if (ventana_info.model[0]) {
serialnr->high = 0;
serialnr->low = ventana_info.serial;
} else {
serialnr->high = 0;
serialnr->low = 0;
}
}
#endif
/*
* Board Support
*/
int board_early_init_f(void)
{
setup_iomux_uart();
#if defined(CONFIG_VIDEO_IPUV3)
setup_display();
#endif
return 0;
}
int dram_init(void)
{
gd->ram_size = imx_ddr_size();
return 0;
}
int board_init(void)
{
struct iomuxc *const iomuxc_regs = (struct iomuxc *)IOMUXC_BASE_ADDR;
clrsetbits_le32(&iomuxc_regs->gpr[1],
IOMUXC_GPR1_OTG_ID_MASK,
IOMUXC_GPR1_OTG_ID_GPIO1);
/* address of linux boot parameters */
gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
#ifdef CONFIG_CMD_NAND
setup_gpmi_nand();
#endif
#ifdef CONFIG_MXC_SPI
setup_spi();
#endif
setup_ventana_i2c();
#ifdef CONFIG_CMD_SATA
setup_sata();
#endif
/* read Gateworks EEPROM into global struct (used later) */
board_type = read_eeprom(CONFIG_I2C_GSC, &ventana_info);
setup_iomux_gpio(board_type, &ventana_info);
return 0;
}
#if defined(CONFIG_DISPLAY_BOARDINFO_LATE)
/*
* called during late init (after relocation and after board_init())
* by virtue of CONFIG_DISPLAY_BOARDINFO_LATE as we needed i2c initialized and
* EEPROM read.
*/
int checkboard(void)
{
struct ventana_board_info *info = &ventana_info;
unsigned char buf[4];
const char *p;
int quiet; /* Quiet or minimal output mode */
quiet = 0;
p = getenv("quiet");
if (p)
quiet = simple_strtol(p, NULL, 10);
else
setenv("quiet", "0");
puts("\nGateworks Corporation Copyright 2014\n");
if (info->model[0]) {
printf("Model: %s\n", info->model);
printf("MFGDate: %02x-%02x-%02x%02x\n",
info->mfgdate[0], info->mfgdate[1],
info->mfgdate[2], info->mfgdate[3]);
printf("Serial:%d\n", info->serial);
} else {
puts("Invalid EEPROM - board will not function fully\n");
}
if (quiet)
return 0;
/* Display GSC firmware revision/CRC/status */
gsc_info(0);
/* Display RTC */
if (!gsc_i2c_read(GSC_RTC_ADDR, 0x00, 1, buf, 4)) {
printf("RTC: %d\n",
buf[0] | buf[1]<<8 | buf[2]<<16 | buf[3]<<24);
}
return 0;
}
#endif
#ifdef CONFIG_CMD_BMODE
/*
* BOOT_CFG1, BOOT_CFG2, BOOT_CFG3, BOOT_CFG4
* see Table 8-11 and Table 5-9
* BOOT_CFG1[7] = 1 (boot from NAND)
* BOOT_CFG1[5] = 0 - raw NAND
* BOOT_CFG1[4] = 0 - default pad settings
* BOOT_CFG1[3:2] = 00 - devices = 1
* BOOT_CFG1[1:0] = 00 - Row Address Cycles = 3
* BOOT_CFG2[4:3] = 00 - Boot Search Count = 2
* BOOT_CFG2[2:1] = 01 - Pages In Block = 64
* BOOT_CFG2[0] = 0 - Reset time 12ms
*/
static const struct boot_mode board_boot_modes[] = {
/* NAND: 64pages per block, 3 row addr cycles, 2 copies of FCB/DBBT */
{ "nand", MAKE_CFGVAL(0x80, 0x02, 0x00, 0x00) },
{ "emmc2", MAKE_CFGVAL(0x60, 0x48, 0x00, 0x00) }, /* GW5600 */
{ "emmc3", MAKE_CFGVAL(0x60, 0x50, 0x00, 0x00) }, /* GW5903/GW5904 */
{ NULL, 0 },
};
#endif
/* late init */
int misc_init_r(void)
{
struct ventana_board_info *info = &ventana_info;
char buf[256];
int i;
/* set env vars based on EEPROM data */
if (ventana_info.model[0]) {
char str[16], fdt[36];
char *p;
const char *cputype = "";
/*
* FDT name will be prefixed with CPU type. Three versions
* will be created each increasingly generic and bootloader
* env scripts will try loading each from most specific to
* least.
*/
if (is_cpu_type(MXC_CPU_MX6Q) ||
is_cpu_type(MXC_CPU_MX6D))
cputype = "imx6q";
else if (is_cpu_type(MXC_CPU_MX6DL) ||
is_cpu_type(MXC_CPU_MX6SOLO))
cputype = "imx6dl";
setenv("soctype", cputype);
if (8 << (ventana_info.nand_flash_size-1) >= 2048)
setenv("flash_layout", "large");
else
setenv("flash_layout", "normal");
memset(str, 0, sizeof(str));
for (i = 0; i < (sizeof(str)-1) && info->model[i]; i++)
str[i] = tolower(info->model[i]);
setenv("model", str);
if (!getenv("fdt_file")) {
sprintf(fdt, "%s-%s.dtb", cputype, str);
setenv("fdt_file", fdt);
}
p = strchr(str, '-');
if (p) {
*p++ = 0;
setenv("model_base", str);
sprintf(fdt, "%s-%s.dtb", cputype, str);
setenv("fdt_file1", fdt);
if (board_type != GW551x &&
board_type != GW552x &&
board_type != GW553x &&
board_type != GW560x)
str[4] = 'x';
str[5] = 'x';
str[6] = 0;
sprintf(fdt, "%s-%s.dtb", cputype, str);
setenv("fdt_file2", fdt);
}
/* initialize env from EEPROM */
if (test_bit(EECONFIG_ETH0, info->config) &&
!getenv("ethaddr")) {
eth_setenv_enetaddr("ethaddr", info->mac0);
}
if (test_bit(EECONFIG_ETH1, info->config) &&
!getenv("eth1addr")) {
eth_setenv_enetaddr("eth1addr", info->mac1);
}
/* board serial-number */
sprintf(str, "%6d", info->serial);
setenv("serial#", str);
/* memory MB */
sprintf(str, "%d", (int) (gd->ram_size >> 20));
setenv("mem_mb", str);
}
/* Set a non-initialized hwconfig based on board configuration */
if (!strcmp(getenv("hwconfig"), "_UNKNOWN_")) {
buf[0] = 0;
if (gpio_cfg[board_type].rs232_en)
strcat(buf, "rs232;");
for (i = 0; i < gpio_cfg[board_type].dio_num; i++) {
char buf1[32];
sprintf(buf1, "dio%d:mode=gpio;", i);
if (strlen(buf) + strlen(buf1) < sizeof(buf))
strcat(buf, buf1);
}
setenv("hwconfig", buf);
}
/* setup baseboard specific GPIO based on board and env */
setup_board_gpio(board_type, info);
#ifdef CONFIG_CMD_BMODE
add_board_boot_modes(board_boot_modes);
#endif
/* disable boot watchdog */
gsc_boot_wd_disable();
return 0;
}
#ifdef CONFIG_OF_BOARD_SETUP
static int ft_sethdmiinfmt(void *blob, char *mode)
{
int off;
if (!mode)
return -EINVAL;
off = fdt_node_offset_by_compatible(blob, -1, "nxp,tda1997x");
if (off < 0)
return off;
if (0 == strcasecmp(mode, "yuv422bt656")) {
u8 cfg[] = { 0x00, 0x00, 0x00, 0x82, 0x81, 0x00,
0x00, 0x00, 0x00 };
mode = "422_ccir";
fdt_setprop(blob, off, "vidout_fmt", mode, strlen(mode) + 1);
fdt_setprop_u32(blob, off, "vidout_trc", 1);
fdt_setprop_u32(blob, off, "vidout_blc", 1);
fdt_setprop(blob, off, "vidout_portcfg", cfg, sizeof(cfg));
printf(" set HDMI input mode to %s\n", mode);
} else if (0 == strcasecmp(mode, "yuv422smp")) {
u8 cfg[] = { 0x00, 0x00, 0x00, 0x88, 0x87, 0x00,
0x82, 0x81, 0x00 };
mode = "422_smp";
fdt_setprop(blob, off, "vidout_fmt", mode, strlen(mode) + 1);
fdt_setprop_u32(blob, off, "vidout_trc", 0);
fdt_setprop_u32(blob, off, "vidout_blc", 0);
fdt_setprop(blob, off, "vidout_portcfg", cfg, sizeof(cfg));
printf(" set HDMI input mode to %s\n", mode);
} else {
return -EINVAL;
}
return 0;
}
/* enable a property of a node if the node is found */
static inline void ft_enable_path(void *blob, const char *path)
{
int i = fdt_path_offset(blob, path);
if (i >= 0) {
debug("enabling %s\n", path);
fdt_status_okay(blob, i);
}
}
/* remove a property of a node if the node is found */
static inline void ft_delprop_path(void *blob, const char *path,
const char *name)
{
int i = fdt_path_offset(blob, path);
if (i) {
debug("removing %s/%s\n", path, name);
fdt_delprop(blob, i, name);
}
}
#if defined(CONFIG_CMD_PCI)
#define PCI_ID(x) ( \
(PCI_BUS(x->devfn)<<16)| \
(PCI_DEV(x->devfn)<<11)| \
(PCI_FUNC(x->devfn)<<8) \
)
#define PCIE_PATH "/soc/pcie@0x01000000"
int fdt_add_pci_node(void *blob, int par, struct pci_dev *dev)
{
uint32_t reg[5];
char node[32];
int np;
sprintf(node, "pcie@%d,%d,%d", PCI_BUS(dev->devfn),
PCI_DEV(dev->devfn), PCI_FUNC(dev->devfn));
np = fdt_subnode_offset(blob, par, node);
if (np >= 0)
return np;
np = fdt_add_subnode(blob, par, node);
if (np < 0) {
printf(" %s failed: no space\n", __func__);
return np;
}
memset(reg, 0, sizeof(reg));
reg[0] = cpu_to_fdt32(PCI_ID(dev));
fdt_setprop(blob, np, "reg", reg, sizeof(reg));
return np;
}
/* build a path of nested PCI devs for all bridges passed through */
int fdt_add_pci_path(void *blob, struct pci_dev *dev)
{
struct pci_dev *bridges[MAX_PCI_DEVS];
int k, np;
/* build list of parents */
np = fdt_path_offset(blob, PCIE_PATH);
if (np < 0)
return np;
k = 0;
while (dev) {
bridges[k++] = dev;
dev = dev->ppar;
};
/* now add them the to DT in reverse order */
while (k--) {
np = fdt_add_pci_node(blob, np, bridges[k]);
if (np < 0)
break;
}
return np;
}
/*
* The GW16082 has a hardware errata errata such that it's
* INTA/B/C/D are mis-mapped to its four slots (slot12-15). Because
* of this normal PCI interrupt swizzling will not work so we will
* provide an irq-map via device-tree.
*/
int fdt_fixup_gw16082(void *blob, int np, struct pci_dev *dev)
{
int len;
int host;
uint32_t imap_new[8*4*4];
const uint32_t *imap;
uint32_t irq[4];
uint32_t reg[4];
int i;
/* build irq-map based on host controllers map */
host = fdt_path_offset(blob, PCIE_PATH);
if (host < 0) {
printf(" %s failed: missing host\n", __func__);
return host;
}
/* use interrupt data from root complex's node */
imap = fdt_getprop(blob, host, "interrupt-map", &len);
if (!imap || len != 128) {
printf(" %s failed: invalid interrupt-map\n",
__func__);
return -FDT_ERR_NOTFOUND;
}
/* obtain irq's of host controller in pin order */
for (i = 0; i < 4; i++)
irq[(fdt32_to_cpu(imap[(i*8)+3])-1)%4] = imap[(i*8)+6];
/*
* determine number of swizzles necessary:
* For each bridge we pass through we need to swizzle
* the number of the slot we are on.
*/
struct pci_dev *d;
int b;
b = 0;
d = dev->ppar;
while(d && d->ppar) {
b += PCI_DEV(d->devfn);
d = d->ppar;
}
/* create new irq mappings for slots12-15
* <skt> <idsel> <slot> <skt-inta> <skt-intb>
* J3 AD28 12 INTD INTA
* J4 AD29 13 INTC INTD
* J5 AD30 14 INTB INTC
* J2 AD31 15 INTA INTB
*/
for (i = 0; i < 4; i++) {
/* addr matches bus:dev:func */
u32 addr = dev->busno << 16 | (12+i) << 11;
/* default cells from root complex */
memcpy(&imap_new[i*32], imap, 128);
/* first cell is PCI device address (BDF) */
imap_new[(i*32)+(0*8)+0] = cpu_to_fdt32(addr);
imap_new[(i*32)+(1*8)+0] = cpu_to_fdt32(addr);
imap_new[(i*32)+(2*8)+0] = cpu_to_fdt32(addr);
imap_new[(i*32)+(3*8)+0] = cpu_to_fdt32(addr);
/* third cell is pin */
imap_new[(i*32)+(0*8)+3] = cpu_to_fdt32(1);
imap_new[(i*32)+(1*8)+3] = cpu_to_fdt32(2);
imap_new[(i*32)+(2*8)+3] = cpu_to_fdt32(3);
imap_new[(i*32)+(3*8)+3] = cpu_to_fdt32(4);
/* sixth cell is relative interrupt */
imap_new[(i*32)+(0*8)+6] = irq[(15-(12+i)+b+0)%4];
imap_new[(i*32)+(1*8)+6] = irq[(15-(12+i)+b+1)%4];
imap_new[(i*32)+(2*8)+6] = irq[(15-(12+i)+b+2)%4];
imap_new[(i*32)+(3*8)+6] = irq[(15-(12+i)+b+3)%4];
}
fdt_setprop(blob, np, "interrupt-map", imap_new,
sizeof(imap_new));
reg[0] = cpu_to_fdt32(0xfff00);
reg[1] = 0;
reg[2] = 0;
reg[3] = cpu_to_fdt32(0x7);
fdt_setprop(blob, np, "interrupt-map-mask", reg, sizeof(reg));
fdt_setprop_cell(blob, np, "#interrupt-cells", 1);
fdt_setprop_string(blob, np, "device_type", "pci");
fdt_setprop_cell(blob, np, "#address-cells", 3);
fdt_setprop_cell(blob, np, "#size-cells", 2);
printf(" Added custom interrupt-map for GW16082\n");
return 0;
}
/* The sky2 GigE MAC obtains it's MAC addr from device-tree by default */
int fdt_fixup_sky2(void *blob, int np, struct pci_dev *dev)
{
char *tmp, *end;
char mac[16];
unsigned char mac_addr[6];
int j;
sprintf(mac, "eth1addr");
tmp = getenv(mac);
if (tmp) {
for (j = 0; j < 6; j++) {
mac_addr[j] = tmp ?
simple_strtoul(tmp, &end,16) : 0;
if (tmp)
tmp = (*end) ? end+1 : end;
}
fdt_setprop(blob, np, "local-mac-address", mac_addr,
sizeof(mac_addr));
printf(" Added mac addr for eth1\n");
return 0;
}
return -1;
}
/*
* PCI DT nodes must be nested therefore if we need to apply a DT fixup
* we will walk the PCI bus and add bridge nodes up to the device receiving
* the fixup.
*/
void ft_board_pci_fixup(void *blob, bd_t *bd)
{
int i, np;
struct pci_dev *dev;
for (i = 0; i < pci_devno; i++) {
dev = &pci_devs[i];
/*
* The GW16082 consists of a TI XIO2001 PCIe-to-PCI bridge and
* an EEPROM at i2c1-0x50.
*/
if ((dev->vendor == PCI_VENDOR_ID_TI) &&
(dev->device == 0x8240) &&
(i2c_set_bus_num(1) == 0) &&
(i2c_probe(0x50) == 0))
{
np = fdt_add_pci_path(blob, dev);
if (np > 0)
fdt_fixup_gw16082(blob, np, dev);
}
/* ethernet1 mac address */
else if ((dev->vendor == PCI_VENDOR_ID_MARVELL) &&
(dev->device == 0x4380))
{
np = fdt_add_pci_path(blob, dev);
if (np > 0)
fdt_fixup_sky2(blob, np, dev);
}
}
}
#endif /* if defined(CONFIG_CMD_PCI) */
void ft_board_wdog_fixup(void *blob, const char *path)
{
ft_delprop_path(blob, path, "ext-reset-output");
ft_delprop_path(blob, path, "fsl,ext-reset-output");
}
/*
* called prior to booting kernel or by 'fdt boardsetup' command
*
* unless 'fdt_noauto' env var is set we will update the following in the DTB:
* - mtd partitions based on mtdparts/mtdids env
* - system-serial (board serial num from EEPROM)
* - board (full model from EEPROM)
* - peripherals removed from DTB if not loaded on board (per EEPROM config)
*/
#define UART1_PATH "/soc/aips-bus@02100000/serial@021ec000"
#define WDOG1_PATH "/soc/aips-bus@02000000/wdog@020bc000"
#define WDOG2_PATH "/soc/aips-bus@02000000/wdog@020c0000"
#define GPIO3_PATH "/soc/aips-bus@02000000/gpio@020a4000"
int ft_board_setup(void *blob, bd_t *bd)
{
struct ventana_board_info *info = &ventana_info;
struct ventana_eeprom_config *cfg;
struct node_info nodes[] = {
{ "sst,w25q256", MTD_DEV_TYPE_NOR, }, /* SPI flash */
{ "fsl,imx6q-gpmi-nand", MTD_DEV_TYPE_NAND, }, /* NAND flash */
};
const char *model = getenv("model");
const char *display = getenv("display");
int i;
char rev = 0;
/* determine board revision */
for (i = sizeof(ventana_info.model) - 1; i > 0; i--) {
if (ventana_info.model[i] >= 'A') {
rev = ventana_info.model[i];
break;
}
}
if (getenv("fdt_noauto")) {
puts(" Skiping ft_board_setup (fdt_noauto defined)\n");
return 0;
}
if (test_bit(EECONFIG_NAND, info->config)) {
/* Update partition nodes using info from mtdparts env var */
puts(" Updating MTD partitions...\n");
fdt_fixup_mtdparts(blob, nodes, ARRAY_SIZE(nodes));
}
/* Update display timings from display env var */
if (display) {
if (fdt_fixup_display(blob, fdt_get_alias(blob, "lvds0"),
display) >= 0)
printf(" Set display timings for %s...\n", display);
}
printf(" Adjusting FDT per EEPROM for %s...\n", model);
/* board serial number */
fdt_setprop(blob, 0, "system-serial", getenv("serial#"),
strlen(getenv("serial#")) + 1);
/* board (model contains model from device-tree) */
fdt_setprop(blob, 0, "board", info->model,
strlen((const char *)info->model) + 1);
/* set desired digital video capture format */
ft_sethdmiinfmt(blob, getenv("hdmiinfmt"));
/*
* Board model specific fixups
*/
switch (board_type) {
case GW51xx:
/*
* disable wdog node for GW51xx-A/B to work around
* errata causing wdog timer to be unreliable.
*/
if (rev >= 'A' && rev < 'C') {
i = fdt_path_offset(blob, WDOG1_PATH);
if (i)
fdt_status_disabled(blob, i);
}
/* GW51xx-E adds WDOG1_B external reset */
if (rev < 'E')
ft_board_wdog_fixup(blob, WDOG1_PATH);
break;
case GW52xx:
/* GW522x Uses GPIO3_IO23 instead of GPIO1_IO29 */
if (info->model[4] == '2') {
u32 handle = 0;
u32 *range = NULL;
i = fdt_node_offset_by_compatible(blob, -1,
"fsl,imx6q-pcie");
if (i)
range = (u32 *)fdt_getprop(blob, i,
"reset-gpio", NULL);
if (range) {
i = fdt_path_offset(blob, GPIO3_PATH);
if (i)
handle = fdt_get_phandle(blob, i);
if (handle) {
range[0] = cpu_to_fdt32(handle);
range[1] = cpu_to_fdt32(23);
}
}
/* these have broken usd_vsel */
if (strstr((const char *)info->model, "SP318-B") ||
strstr((const char *)info->model, "SP331-B"))
gpio_cfg[board_type].usd_vsel = 0;
/* GW522x-B adds WDOG1_B external reset */
ft_board_wdog_fixup(blob, WDOG1_PATH);
}
/* GW520x-E adds WDOG1_B external reset */
else if (info->model[4] == '0' && rev < 'E')
ft_board_wdog_fixup(blob, WDOG1_PATH);
break;
case GW53xx:
/* GW53xx-E adds WDOG1_B external reset */
if (rev < 'E')
ft_board_wdog_fixup(blob, WDOG1_PATH);
break;
case GW54xx:
/*
* disable serial2 node for GW54xx for compatibility with older
* 3.10.x kernel that improperly had this node enabled in the DT
*/
i = fdt_path_offset(blob, UART1_PATH);
if (i)
fdt_del_node(blob, i);
/* GW54xx-E adds WDOG2_B external reset */
if (rev < 'E')
ft_board_wdog_fixup(blob, WDOG2_PATH);
break;
case GW551x:
/*
* isolate CSI0_DATA_EN for GW551x-A to work around errata
* causing non functional digital video in (it is not hooked up)
*/
if (rev == 'A') {
u32 *range = NULL;
int len;
const u32 *handle = NULL;
i = fdt_node_offset_by_compatible(blob, -1,
"fsl,imx-tda1997x-video");
if (i)
handle = fdt_getprop(blob, i, "pinctrl-0",
NULL);
if (handle)
i = fdt_node_offset_by_phandle(blob,
fdt32_to_cpu(*handle));
if (i)
range = (u32 *)fdt_getprop(blob, i, "fsl,pins",
&len);
if (range) {
len /= sizeof(u32);
for (i = 0; i < len; i += 6) {
u32 mux_reg = fdt32_to_cpu(range[i+0]);
u32 conf_reg = fdt32_to_cpu(range[i+1]);
/* mux PAD_CSI0_DATA_EN to GPIO */
if (is_cpu_type(MXC_CPU_MX6Q) &&
mux_reg == 0x260 &&
conf_reg == 0x630)
range[i+3] = cpu_to_fdt32(0x5);
else if (!is_cpu_type(MXC_CPU_MX6Q) &&
mux_reg == 0x08c &&
conf_reg == 0x3a0)
range[i+3] = cpu_to_fdt32(0x5);
}
fdt_setprop_inplace(blob, i, "fsl,pins", range,
len);
}
/* set BT656 video format */
ft_sethdmiinfmt(blob, "yuv422bt656");
}
/* GW551x-C adds WDOG1_B external reset */
if (rev < 'C')
ft_board_wdog_fixup(blob, WDOG1_PATH);
break;
}
/* Configure DIO */
for (i = 0; i < gpio_cfg[board_type].dio_num; i++) {
struct dio_cfg *cfg = &gpio_cfg[board_type].dio_cfg[i];
char arg[10];
sprintf(arg, "dio%d", i);
if (!hwconfig(arg))
continue;
if (hwconfig_subarg_cmp(arg, "mode", "pwm") && cfg->pwm_param)
{
char path[48];
sprintf(path, "/soc/aips-bus@02000000/pwm@%08x",
0x02080000 + (0x4000 * (cfg->pwm_param - 1)));
printf(" Enabling pwm%d for DIO%d\n",
cfg->pwm_param, i);
ft_enable_path(blob, path);
}
}
/* remove no-1-8-v if UHS-I support is present */
if (gpio_cfg[board_type].usd_vsel) {
debug("Enabling UHS-I support\n");
ft_delprop_path(blob, "/soc/aips-bus@02100000/usdhc@02198000",
"no-1-8-v");
}
#if defined(CONFIG_CMD_PCI)
if (!getenv("nopcifixup"))
ft_board_pci_fixup(blob, bd);
#endif
/*
* Peripheral Config:
* remove nodes by alias path if EEPROM config tells us the
* peripheral is not loaded on the board.
*/
if (getenv("fdt_noconfig")) {
puts(" Skiping periperhal config (fdt_noconfig defined)\n");
return 0;
}
cfg = econfig;
while (cfg->name) {
if (!test_bit(cfg->bit, info->config)) {
fdt_del_node_and_alias(blob, cfg->dtalias ?
cfg->dtalias : cfg->name);
}
cfg++;
}
return 0;
}
#endif /* CONFIG_OF_BOARD_SETUP */
static struct mxc_serial_platdata ventana_mxc_serial_plat = {
.reg = (struct mxc_uart *)UART2_BASE,
};
U_BOOT_DEVICE(ventana_serial) = {
.name = "serial_mxc",
.platdata = &ventana_mxc_serial_plat,
};