u-boot/board/boundary/nitrogen6x/nitrogen6x.c
Eric Nelson d9f43c8f5c nitrogen6x: set environment variable reset_cause
Signed-off-by: Eric Nelson <eric.nelson@boundarydevices.com>
Acked-by: Stefano Babic <sbabic@denx.de>
2015-02-17 10:42:54 +01:00

1024 lines
27 KiB
C

/*
* Copyright (C) 2010-2013 Freescale Semiconductor, Inc.
* Copyright (C) 2013, Boundary Devices <info@boundarydevices.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <asm/io.h>
#include <asm/arch/clock.h>
#include <asm/arch/imx-regs.h>
#include <asm/arch/iomux.h>
#include <asm/arch/sys_proto.h>
#include <malloc.h>
#include <asm/arch/mx6-pins.h>
#include <asm/errno.h>
#include <asm/gpio.h>
#include <asm/imx-common/iomux-v3.h>
#include <asm/imx-common/mxc_i2c.h>
#include <asm/imx-common/sata.h>
#include <asm/imx-common/spi.h>
#include <asm/imx-common/boot_mode.h>
#include <asm/imx-common/video.h>
#include <mmc.h>
#include <fsl_esdhc.h>
#include <micrel.h>
#include <miiphy.h>
#include <netdev.h>
#include <asm/arch/crm_regs.h>
#include <asm/arch/mxc_hdmi.h>
#include <i2c.h>
#include <input.h>
#include <netdev.h>
#include <usb/ehci-fsl.h>
DECLARE_GLOBAL_DATA_PTR;
#define GP_USB_OTG_PWR IMX_GPIO_NR(3, 22)
#define UART_PAD_CTRL (PAD_CTL_PUS_100K_UP | \
PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | \
PAD_CTL_SRE_FAST | PAD_CTL_HYS)
#define USDHC_PAD_CTRL (PAD_CTL_PUS_47K_UP | \
PAD_CTL_SPEED_LOW | PAD_CTL_DSE_80ohm | \
PAD_CTL_SRE_FAST | PAD_CTL_HYS)
#define ENET_PAD_CTRL (PAD_CTL_PUS_100K_UP | \
PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | PAD_CTL_HYS)
#define SPI_PAD_CTRL (PAD_CTL_HYS | PAD_CTL_SPEED_MED | \
PAD_CTL_DSE_40ohm | PAD_CTL_SRE_FAST)
#define BUTTON_PAD_CTRL (PAD_CTL_PUS_100K_UP | \
PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | PAD_CTL_HYS)
#define I2C_PAD_CTRL (PAD_CTL_PUS_100K_UP | \
PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | PAD_CTL_HYS | \
PAD_CTL_ODE | PAD_CTL_SRE_FAST)
#define WEAK_PULLUP (PAD_CTL_PUS_100K_UP | \
PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | PAD_CTL_HYS | \
PAD_CTL_SRE_SLOW)
#define WEAK_PULLDOWN (PAD_CTL_PUS_100K_DOWN | \
PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | \
PAD_CTL_HYS | PAD_CTL_SRE_SLOW)
#define OUTPUT_40OHM (PAD_CTL_SPEED_MED|PAD_CTL_DSE_40ohm)
int dram_init(void)
{
gd->ram_size = ((ulong)CONFIG_DDR_MB * 1024 * 1024);
return 0;
}
static iomux_v3_cfg_t const uart1_pads[] = {
MX6_PAD_SD3_DAT6__UART1_RX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),
MX6_PAD_SD3_DAT7__UART1_TX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),
};
static iomux_v3_cfg_t const uart2_pads[] = {
MX6_PAD_EIM_D26__UART2_TX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),
MX6_PAD_EIM_D27__UART2_RX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),
};
#define PC MUX_PAD_CTRL(I2C_PAD_CTRL)
/* I2C1, SGTL5000 */
static struct i2c_pads_info i2c_pad_info0 = {
.scl = {
.i2c_mode = MX6_PAD_EIM_D21__I2C1_SCL | PC,
.gpio_mode = MX6_PAD_EIM_D21__GPIO3_IO21 | PC,
.gp = IMX_GPIO_NR(3, 21)
},
.sda = {
.i2c_mode = MX6_PAD_EIM_D28__I2C1_SDA | PC,
.gpio_mode = MX6_PAD_EIM_D28__GPIO3_IO28 | PC,
.gp = IMX_GPIO_NR(3, 28)
}
};
/* I2C2 Camera, MIPI */
static struct i2c_pads_info i2c_pad_info1 = {
.scl = {
.i2c_mode = MX6_PAD_KEY_COL3__I2C2_SCL | PC,
.gpio_mode = MX6_PAD_KEY_COL3__GPIO4_IO12 | PC,
.gp = IMX_GPIO_NR(4, 12)
},
.sda = {
.i2c_mode = MX6_PAD_KEY_ROW3__I2C2_SDA | PC,
.gpio_mode = MX6_PAD_KEY_ROW3__GPIO4_IO13 | PC,
.gp = IMX_GPIO_NR(4, 13)
}
};
/* I2C3, J15 - RGB connector */
static struct i2c_pads_info i2c_pad_info2 = {
.scl = {
.i2c_mode = MX6_PAD_GPIO_5__I2C3_SCL | PC,
.gpio_mode = MX6_PAD_GPIO_5__GPIO1_IO05 | PC,
.gp = IMX_GPIO_NR(1, 5)
},
.sda = {
.i2c_mode = MX6_PAD_GPIO_16__I2C3_SDA | PC,
.gpio_mode = MX6_PAD_GPIO_16__GPIO7_IO11 | PC,
.gp = IMX_GPIO_NR(7, 11)
}
};
static iomux_v3_cfg_t const usdhc2_pads[] = {
MX6_PAD_SD2_CLK__SD2_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL),
MX6_PAD_SD2_CMD__SD2_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL),
MX6_PAD_SD2_DAT0__SD2_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
MX6_PAD_SD2_DAT1__SD2_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
MX6_PAD_SD2_DAT2__SD2_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
MX6_PAD_SD2_DAT3__SD2_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
};
static iomux_v3_cfg_t const usdhc3_pads[] = {
MX6_PAD_SD3_CLK__SD3_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL),
MX6_PAD_SD3_CMD__SD3_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL),
MX6_PAD_SD3_DAT0__SD3_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
MX6_PAD_SD3_DAT1__SD3_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
MX6_PAD_SD3_DAT2__SD3_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
MX6_PAD_SD3_DAT3__SD3_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
MX6_PAD_SD3_DAT5__GPIO7_IO00 | MUX_PAD_CTRL(NO_PAD_CTRL), /* CD */
};
static iomux_v3_cfg_t const usdhc4_pads[] = {
MX6_PAD_SD4_CLK__SD4_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL),
MX6_PAD_SD4_CMD__SD4_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL),
MX6_PAD_SD4_DAT0__SD4_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
MX6_PAD_SD4_DAT1__SD4_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
MX6_PAD_SD4_DAT2__SD4_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
MX6_PAD_SD4_DAT3__SD4_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
MX6_PAD_NANDF_D6__GPIO2_IO06 | MUX_PAD_CTRL(NO_PAD_CTRL), /* CD */
};
static iomux_v3_cfg_t const enet_pads1[] = {
MX6_PAD_ENET_MDIO__ENET_MDIO | MUX_PAD_CTRL(ENET_PAD_CTRL),
MX6_PAD_ENET_MDC__ENET_MDC | MUX_PAD_CTRL(ENET_PAD_CTRL),
MX6_PAD_RGMII_TXC__RGMII_TXC | MUX_PAD_CTRL(ENET_PAD_CTRL),
MX6_PAD_RGMII_TD0__RGMII_TD0 | MUX_PAD_CTRL(ENET_PAD_CTRL),
MX6_PAD_RGMII_TD1__RGMII_TD1 | MUX_PAD_CTRL(ENET_PAD_CTRL),
MX6_PAD_RGMII_TD2__RGMII_TD2 | MUX_PAD_CTRL(ENET_PAD_CTRL),
MX6_PAD_RGMII_TD3__RGMII_TD3 | MUX_PAD_CTRL(ENET_PAD_CTRL),
MX6_PAD_RGMII_TX_CTL__RGMII_TX_CTL | MUX_PAD_CTRL(ENET_PAD_CTRL),
MX6_PAD_ENET_REF_CLK__ENET_TX_CLK | MUX_PAD_CTRL(ENET_PAD_CTRL),
/* pin 35 - 1 (PHY_AD2) on reset */
MX6_PAD_RGMII_RXC__GPIO6_IO30 | MUX_PAD_CTRL(NO_PAD_CTRL),
/* pin 32 - 1 - (MODE0) all */
MX6_PAD_RGMII_RD0__GPIO6_IO25 | MUX_PAD_CTRL(NO_PAD_CTRL),
/* pin 31 - 1 - (MODE1) all */
MX6_PAD_RGMII_RD1__GPIO6_IO27 | MUX_PAD_CTRL(NO_PAD_CTRL),
/* pin 28 - 1 - (MODE2) all */
MX6_PAD_RGMII_RD2__GPIO6_IO28 | MUX_PAD_CTRL(NO_PAD_CTRL),
/* pin 27 - 1 - (MODE3) all */
MX6_PAD_RGMII_RD3__GPIO6_IO29 | MUX_PAD_CTRL(NO_PAD_CTRL),
/* pin 33 - 1 - (CLK125_EN) 125Mhz clockout enabled */
MX6_PAD_RGMII_RX_CTL__GPIO6_IO24 | MUX_PAD_CTRL(NO_PAD_CTRL),
/* pin 42 PHY nRST */
MX6_PAD_EIM_D23__GPIO3_IO23 | MUX_PAD_CTRL(NO_PAD_CTRL),
MX6_PAD_ENET_RXD0__GPIO1_IO27 | MUX_PAD_CTRL(NO_PAD_CTRL),
};
static iomux_v3_cfg_t const enet_pads2[] = {
MX6_PAD_RGMII_RXC__RGMII_RXC | MUX_PAD_CTRL(ENET_PAD_CTRL),
MX6_PAD_RGMII_RD0__RGMII_RD0 | MUX_PAD_CTRL(ENET_PAD_CTRL),
MX6_PAD_RGMII_RD1__RGMII_RD1 | MUX_PAD_CTRL(ENET_PAD_CTRL),
MX6_PAD_RGMII_RD2__RGMII_RD2 | MUX_PAD_CTRL(ENET_PAD_CTRL),
MX6_PAD_RGMII_RD3__RGMII_RD3 | MUX_PAD_CTRL(ENET_PAD_CTRL),
MX6_PAD_RGMII_RX_CTL__RGMII_RX_CTL | MUX_PAD_CTRL(ENET_PAD_CTRL),
};
static iomux_v3_cfg_t const misc_pads[] = {
MX6_PAD_GPIO_1__USB_OTG_ID | MUX_PAD_CTRL(WEAK_PULLUP),
MX6_PAD_KEY_COL4__USB_OTG_OC | MUX_PAD_CTRL(WEAK_PULLUP),
MX6_PAD_EIM_D30__USB_H1_OC | MUX_PAD_CTRL(WEAK_PULLUP),
/* OTG Power enable */
MX6_PAD_EIM_D22__GPIO3_IO22 | MUX_PAD_CTRL(OUTPUT_40OHM),
};
/* wl1271 pads on nitrogen6x */
static iomux_v3_cfg_t const wl12xx_pads[] = {
(MX6_PAD_NANDF_CS1__GPIO6_IO14 & ~MUX_PAD_CTRL_MASK)
| MUX_PAD_CTRL(WEAK_PULLDOWN),
(MX6_PAD_NANDF_CS2__GPIO6_IO15 & ~MUX_PAD_CTRL_MASK)
| MUX_PAD_CTRL(OUTPUT_40OHM),
(MX6_PAD_NANDF_CS3__GPIO6_IO16 & ~MUX_PAD_CTRL_MASK)
| MUX_PAD_CTRL(OUTPUT_40OHM),
};
#define WL12XX_WL_IRQ_GP IMX_GPIO_NR(6, 14)
#define WL12XX_WL_ENABLE_GP IMX_GPIO_NR(6, 15)
#define WL12XX_BT_ENABLE_GP IMX_GPIO_NR(6, 16)
/* Button assignments for J14 */
static iomux_v3_cfg_t const button_pads[] = {
/* Menu */
MX6_PAD_NANDF_D1__GPIO2_IO01 | MUX_PAD_CTRL(BUTTON_PAD_CTRL),
/* Back */
MX6_PAD_NANDF_D2__GPIO2_IO02 | MUX_PAD_CTRL(BUTTON_PAD_CTRL),
/* Labelled Search (mapped to Power under Android) */
MX6_PAD_NANDF_D3__GPIO2_IO03 | MUX_PAD_CTRL(BUTTON_PAD_CTRL),
/* Home */
MX6_PAD_NANDF_D4__GPIO2_IO04 | MUX_PAD_CTRL(BUTTON_PAD_CTRL),
/* Volume Down */
MX6_PAD_GPIO_19__GPIO4_IO05 | MUX_PAD_CTRL(BUTTON_PAD_CTRL),
/* Volume Up */
MX6_PAD_GPIO_18__GPIO7_IO13 | MUX_PAD_CTRL(BUTTON_PAD_CTRL),
};
static void setup_iomux_enet(void)
{
gpio_direction_output(IMX_GPIO_NR(3, 23), 0); /* SABRE Lite PHY rst */
gpio_direction_output(IMX_GPIO_NR(1, 27), 0); /* Nitrogen6X PHY rst */
gpio_direction_output(IMX_GPIO_NR(6, 30), 1);
gpio_direction_output(IMX_GPIO_NR(6, 25), 1);
gpio_direction_output(IMX_GPIO_NR(6, 27), 1);
gpio_direction_output(IMX_GPIO_NR(6, 28), 1);
gpio_direction_output(IMX_GPIO_NR(6, 29), 1);
imx_iomux_v3_setup_multiple_pads(enet_pads1, ARRAY_SIZE(enet_pads1));
gpio_direction_output(IMX_GPIO_NR(6, 24), 1);
/* Need delay 10ms according to KSZ9021 spec */
udelay(1000 * 10);
gpio_set_value(IMX_GPIO_NR(3, 23), 1); /* SABRE Lite PHY reset */
gpio_set_value(IMX_GPIO_NR(1, 27), 1); /* Nitrogen6X PHY reset */
imx_iomux_v3_setup_multiple_pads(enet_pads2, ARRAY_SIZE(enet_pads2));
udelay(100); /* Wait 100 us before using mii interface */
}
static iomux_v3_cfg_t const usb_pads[] = {
MX6_PAD_GPIO_17__GPIO7_IO12 | MUX_PAD_CTRL(NO_PAD_CTRL),
};
static void setup_iomux_uart(void)
{
imx_iomux_v3_setup_multiple_pads(uart1_pads, ARRAY_SIZE(uart1_pads));
imx_iomux_v3_setup_multiple_pads(uart2_pads, ARRAY_SIZE(uart2_pads));
}
#ifdef CONFIG_USB_EHCI_MX6
int board_ehci_hcd_init(int port)
{
imx_iomux_v3_setup_multiple_pads(usb_pads, ARRAY_SIZE(usb_pads));
/* Reset USB hub */
gpio_direction_output(IMX_GPIO_NR(7, 12), 0);
mdelay(2);
gpio_set_value(IMX_GPIO_NR(7, 12), 1);
return 0;
}
int board_ehci_power(int port, int on)
{
if (port)
return 0;
gpio_set_value(GP_USB_OTG_PWR, on);
return 0;
}
#endif
#ifdef CONFIG_FSL_ESDHC
static struct fsl_esdhc_cfg usdhc_cfg[2] = {
{USDHC3_BASE_ADDR},
{USDHC4_BASE_ADDR},
};
int board_mmc_getcd(struct mmc *mmc)
{
struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv;
int gp_cd = (cfg->esdhc_base == USDHC3_BASE_ADDR) ? IMX_GPIO_NR(7, 0) :
IMX_GPIO_NR(2, 6);
gpio_direction_input(gp_cd);
return !gpio_get_value(gp_cd);
}
int board_mmc_init(bd_t *bis)
{
int ret;
u32 index = 0;
usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC3_CLK);
usdhc_cfg[1].sdhc_clk = mxc_get_clock(MXC_ESDHC4_CLK);
usdhc_cfg[0].max_bus_width = 4;
usdhc_cfg[1].max_bus_width = 4;
for (index = 0; index < CONFIG_SYS_FSL_USDHC_NUM; ++index) {
switch (index) {
case 0:
imx_iomux_v3_setup_multiple_pads(
usdhc3_pads, ARRAY_SIZE(usdhc3_pads));
break;
case 1:
imx_iomux_v3_setup_multiple_pads(
usdhc4_pads, ARRAY_SIZE(usdhc4_pads));
break;
default:
printf("Warning: you configured more USDHC controllers"
"(%d) then supported by the board (%d)\n",
index + 1, CONFIG_SYS_FSL_USDHC_NUM);
return -EINVAL;
}
ret = fsl_esdhc_initialize(bis, &usdhc_cfg[index]);
if (ret)
return ret;
}
return 0;
}
#endif
#ifdef CONFIG_MXC_SPI
int board_spi_cs_gpio(unsigned bus, unsigned cs)
{
return (bus == 0 && cs == 0) ? (IMX_GPIO_NR(3, 19)) : -1;
}
static iomux_v3_cfg_t const ecspi1_pads[] = {
/* SS1 */
MX6_PAD_EIM_D19__GPIO3_IO19 | MUX_PAD_CTRL(NO_PAD_CTRL),
MX6_PAD_EIM_D17__ECSPI1_MISO | MUX_PAD_CTRL(SPI_PAD_CTRL),
MX6_PAD_EIM_D18__ECSPI1_MOSI | MUX_PAD_CTRL(SPI_PAD_CTRL),
MX6_PAD_EIM_D16__ECSPI1_SCLK | MUX_PAD_CTRL(SPI_PAD_CTRL),
};
static void setup_spi(void)
{
imx_iomux_v3_setup_multiple_pads(ecspi1_pads,
ARRAY_SIZE(ecspi1_pads));
}
#endif
int board_phy_config(struct phy_device *phydev)
{
/* min rx data delay */
ksz9021_phy_extended_write(phydev,
MII_KSZ9021_EXT_RGMII_RX_DATA_SKEW, 0x0);
/* min tx data delay */
ksz9021_phy_extended_write(phydev,
MII_KSZ9021_EXT_RGMII_TX_DATA_SKEW, 0x0);
/* max rx/tx clock delay, min rx/tx control */
ksz9021_phy_extended_write(phydev,
MII_KSZ9021_EXT_RGMII_CLOCK_SKEW, 0xf0f0);
if (phydev->drv->config)
phydev->drv->config(phydev);
return 0;
}
int board_eth_init(bd_t *bis)
{
uint32_t base = IMX_FEC_BASE;
struct mii_dev *bus = NULL;
struct phy_device *phydev = NULL;
int ret;
setup_iomux_enet();
#ifdef CONFIG_FEC_MXC
bus = fec_get_miibus(base, -1);
if (!bus)
return 0;
/* scan phy 4,5,6,7 */
phydev = phy_find_by_mask(bus, (0xf << 4), PHY_INTERFACE_MODE_RGMII);
if (!phydev) {
free(bus);
return 0;
}
printf("using phy at %d\n", phydev->addr);
ret = fec_probe(bis, -1, base, bus, phydev);
if (ret) {
printf("FEC MXC: %s:failed\n", __func__);
free(phydev);
free(bus);
}
#endif
#ifdef CONFIG_CI_UDC
/* For otg ethernet*/
usb_eth_initialize(bis);
#endif
return 0;
}
static void setup_buttons(void)
{
imx_iomux_v3_setup_multiple_pads(button_pads,
ARRAY_SIZE(button_pads));
}
#if defined(CONFIG_VIDEO_IPUV3)
static iomux_v3_cfg_t const backlight_pads[] = {
/* Backlight on RGB connector: J15 */
MX6_PAD_SD1_DAT3__GPIO1_IO21 | MUX_PAD_CTRL(NO_PAD_CTRL),
#define RGB_BACKLIGHT_GP IMX_GPIO_NR(1, 21)
/* Backlight on LVDS connector: J6 */
MX6_PAD_SD1_CMD__GPIO1_IO18 | MUX_PAD_CTRL(NO_PAD_CTRL),
#define LVDS_BACKLIGHT_GP IMX_GPIO_NR(1, 18)
};
static iomux_v3_cfg_t const rgb_pads[] = {
MX6_PAD_DI0_DISP_CLK__IPU1_DI0_DISP_CLK,
MX6_PAD_DI0_PIN15__IPU1_DI0_PIN15,
MX6_PAD_DI0_PIN2__IPU1_DI0_PIN02,
MX6_PAD_DI0_PIN3__IPU1_DI0_PIN03,
MX6_PAD_DI0_PIN4__GPIO4_IO20,
MX6_PAD_DISP0_DAT0__IPU1_DISP0_DATA00,
MX6_PAD_DISP0_DAT1__IPU1_DISP0_DATA01,
MX6_PAD_DISP0_DAT2__IPU1_DISP0_DATA02,
MX6_PAD_DISP0_DAT3__IPU1_DISP0_DATA03,
MX6_PAD_DISP0_DAT4__IPU1_DISP0_DATA04,
MX6_PAD_DISP0_DAT5__IPU1_DISP0_DATA05,
MX6_PAD_DISP0_DAT6__IPU1_DISP0_DATA06,
MX6_PAD_DISP0_DAT7__IPU1_DISP0_DATA07,
MX6_PAD_DISP0_DAT8__IPU1_DISP0_DATA08,
MX6_PAD_DISP0_DAT9__IPU1_DISP0_DATA09,
MX6_PAD_DISP0_DAT10__IPU1_DISP0_DATA10,
MX6_PAD_DISP0_DAT11__IPU1_DISP0_DATA11,
MX6_PAD_DISP0_DAT12__IPU1_DISP0_DATA12,
MX6_PAD_DISP0_DAT13__IPU1_DISP0_DATA13,
MX6_PAD_DISP0_DAT14__IPU1_DISP0_DATA14,
MX6_PAD_DISP0_DAT15__IPU1_DISP0_DATA15,
MX6_PAD_DISP0_DAT16__IPU1_DISP0_DATA16,
MX6_PAD_DISP0_DAT17__IPU1_DISP0_DATA17,
MX6_PAD_DISP0_DAT18__IPU1_DISP0_DATA18,
MX6_PAD_DISP0_DAT19__IPU1_DISP0_DATA19,
MX6_PAD_DISP0_DAT20__IPU1_DISP0_DATA20,
MX6_PAD_DISP0_DAT21__IPU1_DISP0_DATA21,
MX6_PAD_DISP0_DAT22__IPU1_DISP0_DATA22,
MX6_PAD_DISP0_DAT23__IPU1_DISP0_DATA23,
};
static void do_enable_hdmi(struct display_info_t const *dev)
{
imx_enable_hdmi_phy();
}
static int detect_i2c(struct display_info_t const *dev)
{
return ((0 == i2c_set_bus_num(dev->bus))
&&
(0 == i2c_probe(dev->addr)));
}
static void enable_lvds(struct display_info_t const *dev)
{
struct iomuxc *iomux = (struct iomuxc *)
IOMUXC_BASE_ADDR;
u32 reg = readl(&iomux->gpr[2]);
reg |= IOMUXC_GPR2_DATA_WIDTH_CH0_24BIT;
writel(reg, &iomux->gpr[2]);
gpio_direction_output(LVDS_BACKLIGHT_GP, 1);
}
static void enable_lvds_jeida(struct display_info_t const *dev)
{
struct iomuxc *iomux = (struct iomuxc *)
IOMUXC_BASE_ADDR;
u32 reg = readl(&iomux->gpr[2]);
reg |= IOMUXC_GPR2_DATA_WIDTH_CH0_24BIT
|IOMUXC_GPR2_BIT_MAPPING_CH0_JEIDA;
writel(reg, &iomux->gpr[2]);
gpio_direction_output(LVDS_BACKLIGHT_GP, 1);
}
static void enable_rgb(struct display_info_t const *dev)
{
imx_iomux_v3_setup_multiple_pads(
rgb_pads,
ARRAY_SIZE(rgb_pads));
gpio_direction_output(RGB_BACKLIGHT_GP, 1);
}
struct display_info_t const displays[] = {{
.bus = 1,
.addr = 0x50,
.pixfmt = IPU_PIX_FMT_RGB24,
.detect = detect_i2c,
.enable = do_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
} }, {
.bus = 0,
.addr = 0,
.pixfmt = IPU_PIX_FMT_RGB24,
.detect = NULL,
.enable = enable_lvds_jeida,
.mode = {
.name = "LDB-WXGA",
.refresh = 60,
.xres = 1280,
.yres = 800,
.pixclock = 14065,
.left_margin = 40,
.right_margin = 40,
.upper_margin = 3,
.lower_margin = 80,
.hsync_len = 10,
.vsync_len = 10,
.sync = FB_SYNC_EXT,
.vmode = FB_VMODE_NONINTERLACED
} }, {
.bus = 0,
.addr = 0,
.pixfmt = IPU_PIX_FMT_RGB24,
.detect = NULL,
.enable = enable_lvds,
.mode = {
.name = "LDB-WXGA-S",
.refresh = 60,
.xres = 1280,
.yres = 800,
.pixclock = 14065,
.left_margin = 40,
.right_margin = 40,
.upper_margin = 3,
.lower_margin = 80,
.hsync_len = 10,
.vsync_len = 10,
.sync = FB_SYNC_EXT,
.vmode = FB_VMODE_NONINTERLACED
} }, {
.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
} }, {
.bus = 0,
.addr = 0,
.pixfmt = IPU_PIX_FMT_LVDS666,
.detect = NULL,
.enable = enable_lvds,
.mode = {
.name = "LG-9.7",
.refresh = 60,
.xres = 1024,
.yres = 768,
.pixclock = 15385, /* ~65MHz */
.left_margin = 480,
.right_margin = 260,
.upper_margin = 16,
.lower_margin = 6,
.hsync_len = 250,
.vsync_len = 10,
.sync = FB_SYNC_EXT,
.vmode = FB_VMODE_NONINTERLACED
} }, {
.bus = 2,
.addr = 0x38,
.pixfmt = IPU_PIX_FMT_LVDS666,
.detect = detect_i2c,
.enable = enable_lvds,
.mode = {
.name = "wsvga-lvds",
.refresh = 60,
.xres = 1024,
.yres = 600,
.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
} }, {
.bus = 2,
.addr = 0x10,
.pixfmt = IPU_PIX_FMT_RGB666,
.detect = detect_i2c,
.enable = enable_rgb,
.mode = {
.name = "fusion7",
.refresh = 60,
.xres = 800,
.yres = 480,
.pixclock = 33898,
.left_margin = 96,
.right_margin = 24,
.upper_margin = 3,
.lower_margin = 10,
.hsync_len = 72,
.vsync_len = 7,
.sync = 0x40000002,
.vmode = FB_VMODE_NONINTERLACED
} }, {
.bus = 0,
.addr = 0,
.pixfmt = IPU_PIX_FMT_RGB666,
.detect = NULL,
.enable = enable_rgb,
.mode = {
.name = "svga",
.refresh = 60,
.xres = 800,
.yres = 600,
.pixclock = 15385,
.left_margin = 220,
.right_margin = 40,
.upper_margin = 21,
.lower_margin = 7,
.hsync_len = 60,
.vsync_len = 10,
.sync = 0,
.vmode = FB_VMODE_NONINTERLACED
} }, {
.bus = 2,
.addr = 0x41,
.pixfmt = IPU_PIX_FMT_LVDS666,
.detect = detect_i2c,
.enable = enable_lvds,
.mode = {
.name = "amp1024x600",
.refresh = 60,
.xres = 1024,
.yres = 600,
.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
} }, {
.bus = 0,
.addr = 0,
.pixfmt = IPU_PIX_FMT_LVDS666,
.detect = 0,
.enable = enable_lvds,
.mode = {
.name = "wvga-lvds",
.refresh = 57,
.xres = 800,
.yres = 480,
.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
} }, {
.bus = 2,
.addr = 0x48,
.pixfmt = IPU_PIX_FMT_RGB666,
.detect = detect_i2c,
.enable = enable_rgb,
.mode = {
.name = "wvga-rgb",
.refresh = 57,
.xres = 800,
.yres = 480,
.pixclock = 37037,
.left_margin = 40,
.right_margin = 60,
.upper_margin = 10,
.lower_margin = 10,
.hsync_len = 20,
.vsync_len = 10,
.sync = 0,
.vmode = FB_VMODE_NONINTERLACED
} }, {
.bus = 0,
.addr = 0,
.pixfmt = IPU_PIX_FMT_RGB24,
.detect = NULL,
.enable = enable_rgb,
.mode = {
.name = "qvga",
.refresh = 60,
.xres = 320,
.yres = 240,
.pixclock = 37037,
.left_margin = 38,
.right_margin = 37,
.upper_margin = 16,
.lower_margin = 15,
.hsync_len = 30,
.vsync_len = 3,
.sync = 0,
.vmode = FB_VMODE_NONINTERLACED
} } };
size_t display_count = ARRAY_SIZE(displays);
int board_cfb_skip(void)
{
return NULL != getenv("novideo");
}
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_HDMI_MUX_CTL_MASK))
| (IOMUXC_GPR3_MUX_SRC_IPU1_DI0
<<IOMUXC_GPR3_LVDS0_MUX_CTL_OFFSET);
writel(reg, &iomux->gpr[3]);
/* backlights off until needed */
imx_iomux_v3_setup_multiple_pads(backlight_pads,
ARRAY_SIZE(backlight_pads));
gpio_direction_input(LVDS_BACKLIGHT_GP);
gpio_direction_input(RGB_BACKLIGHT_GP);
}
#endif
static iomux_v3_cfg_t const init_pads[] = {
/* SGTL5000 sys_mclk */
NEW_PAD_CTRL(MX6_PAD_GPIO_0__CCM_CLKO1, OUTPUT_40OHM),
/* J5 - Camera MCLK */
NEW_PAD_CTRL(MX6_PAD_GPIO_3__CCM_CLKO2, OUTPUT_40OHM),
/* wl1271 pads on nitrogen6x */
/* WL12XX_WL_IRQ_GP */
NEW_PAD_CTRL(MX6_PAD_NANDF_CS1__GPIO6_IO14, WEAK_PULLDOWN),
/* WL12XX_WL_ENABLE_GP */
NEW_PAD_CTRL(MX6_PAD_NANDF_CS2__GPIO6_IO15, OUTPUT_40OHM),
/* WL12XX_BT_ENABLE_GP */
NEW_PAD_CTRL(MX6_PAD_NANDF_CS3__GPIO6_IO16, OUTPUT_40OHM),
/* USB otg power */
NEW_PAD_CTRL(MX6_PAD_EIM_D22__GPIO3_IO22, OUTPUT_40OHM),
NEW_PAD_CTRL(MX6_PAD_NANDF_D5__GPIO2_IO05, OUTPUT_40OHM),
NEW_PAD_CTRL(MX6_PAD_NANDF_WP_B__GPIO6_IO09, OUTPUT_40OHM),
NEW_PAD_CTRL(MX6_PAD_GPIO_8__GPIO1_IO08, OUTPUT_40OHM),
NEW_PAD_CTRL(MX6_PAD_GPIO_6__GPIO1_IO06, OUTPUT_40OHM),
};
#define WL12XX_WL_IRQ_GP IMX_GPIO_NR(6, 14)
static unsigned gpios_out_low[] = {
/* Disable wl1271 */
IMX_GPIO_NR(6, 15), /* disable wireless */
IMX_GPIO_NR(6, 16), /* disable bluetooth */
IMX_GPIO_NR(3, 22), /* disable USB otg power */
IMX_GPIO_NR(2, 5), /* ov5640 mipi camera reset */
IMX_GPIO_NR(1, 8), /* ov5642 reset */
};
static unsigned gpios_out_high[] = {
IMX_GPIO_NR(1, 6), /* ov5642 powerdown */
IMX_GPIO_NR(6, 9), /* ov5640 mipi camera power down */
};
static void set_gpios(unsigned *p, int cnt, int val)
{
int i;
for (i = 0; i < cnt; i++)
gpio_direction_output(*p++, val);
}
int board_early_init_f(void)
{
setup_iomux_uart();
set_gpios(gpios_out_high, ARRAY_SIZE(gpios_out_high), 1);
set_gpios(gpios_out_low, ARRAY_SIZE(gpios_out_low), 0);
gpio_direction_input(WL12XX_WL_IRQ_GP);
imx_iomux_v3_setup_multiple_pads(wl12xx_pads, ARRAY_SIZE(wl12xx_pads));
imx_iomux_v3_setup_multiple_pads(init_pads, ARRAY_SIZE(init_pads));
setup_buttons();
#if defined(CONFIG_VIDEO_IPUV3)
setup_display();
#endif
return 0;
}
/*
* Do not overwrite the console
* Use always serial for U-Boot console
*/
int overwrite_console(void)
{
return 1;
}
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);
imx_iomux_v3_setup_multiple_pads(misc_pads, ARRAY_SIZE(misc_pads));
/* address of boot parameters */
gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
#ifdef CONFIG_MXC_SPI
setup_spi();
#endif
imx_iomux_v3_setup_multiple_pads(
usdhc2_pads, ARRAY_SIZE(usdhc2_pads));
setup_i2c(0, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info0);
setup_i2c(1, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info1);
setup_i2c(2, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info2);
#ifdef CONFIG_CMD_SATA
setup_sata();
#endif
return 0;
}
int checkboard(void)
{
if (gpio_get_value(WL12XX_WL_IRQ_GP))
puts("Board: Nitrogen6X\n");
else
puts("Board: SABRE Lite\n");
return 0;
}
struct button_key {
char const *name;
unsigned gpnum;
char ident;
};
static struct button_key const buttons[] = {
{"back", IMX_GPIO_NR(2, 2), 'B'},
{"home", IMX_GPIO_NR(2, 4), 'H'},
{"menu", IMX_GPIO_NR(2, 1), 'M'},
{"search", IMX_GPIO_NR(2, 3), 'S'},
{"volup", IMX_GPIO_NR(7, 13), 'V'},
{"voldown", IMX_GPIO_NR(4, 5), 'v'},
};
/*
* generate a null-terminated string containing the buttons pressed
* returns number of keys pressed
*/
static int read_keys(char *buf)
{
int i, numpressed = 0;
for (i = 0; i < ARRAY_SIZE(buttons); i++) {
if (!gpio_get_value(buttons[i].gpnum))
buf[numpressed++] = buttons[i].ident;
}
buf[numpressed] = '\0';
return numpressed;
}
static int do_kbd(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
char envvalue[ARRAY_SIZE(buttons)+1];
int numpressed = read_keys(envvalue);
setenv("keybd", envvalue);
return numpressed == 0;
}
U_BOOT_CMD(
kbd, 1, 1, do_kbd,
"Tests for keypresses, sets 'keybd' environment variable",
"Returns 0 (true) to shell if key is pressed."
);
#ifdef CONFIG_PREBOOT
static char const kbd_magic_prefix[] = "key_magic";
static char const kbd_command_prefix[] = "key_cmd";
static void preboot_keys(void)
{
int numpressed;
char keypress[ARRAY_SIZE(buttons)+1];
numpressed = read_keys(keypress);
if (numpressed) {
char *kbd_magic_keys = getenv("magic_keys");
char *suffix;
/*
* loop over all magic keys
*/
for (suffix = kbd_magic_keys; *suffix; ++suffix) {
char *keys;
char magic[sizeof(kbd_magic_prefix) + 1];
sprintf(magic, "%s%c", kbd_magic_prefix, *suffix);
keys = getenv(magic);
if (keys) {
if (!strcmp(keys, keypress))
break;
}
}
if (*suffix) {
char cmd_name[sizeof(kbd_command_prefix) + 1];
char *cmd;
sprintf(cmd_name, "%s%c", kbd_command_prefix, *suffix);
cmd = getenv(cmd_name);
if (cmd) {
setenv("preboot", cmd);
return;
}
}
}
}
#endif
#ifdef CONFIG_CMD_BMODE
static const struct boot_mode board_boot_modes[] = {
/* 4 bit bus width */
{"mmc0", MAKE_CFGVAL(0x40, 0x30, 0x00, 0x00)},
{"mmc1", MAKE_CFGVAL(0x40, 0x38, 0x00, 0x00)},
{NULL, 0},
};
#endif
int misc_init_r(void)
{
#ifdef CONFIG_PREBOOT
preboot_keys();
#endif
#ifdef CONFIG_CMD_BMODE
add_board_boot_modes(board_boot_modes);
#endif
setenv_hex("reset_cause", get_imx_reset_cause());
return 0;
}