diff options
Diffstat (limited to 'arch/arm/boards/freescale-mx28-evk/mx28-evk.c')
| -rw-r--r-- | arch/arm/boards/freescale-mx28-evk/mx28-evk.c | 141 |
1 files changed, 141 insertions, 0 deletions
diff --git a/arch/arm/boards/freescale-mx28-evk/mx28-evk.c b/arch/arm/boards/freescale-mx28-evk/mx28-evk.c new file mode 100644 index 0000000000..b80b910f54 --- /dev/null +++ b/arch/arm/boards/freescale-mx28-evk/mx28-evk.c @@ -0,0 +1,141 @@ +/* + * Copyright (C) 2010 Juergen Beisert, Pengutronix <kernel@pengutronix.de> + * Copyright (C) 2011 Marc Kleine-Budde, Pengutronix <mkl@pengutronix.de> + * Copyright (C) 2011 Wolfram Sang, Pengutronix <w.sang@pengutronix.de> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <common.h> +#include <environment.h> +#include <errno.h> +#include <fec.h> +#include <gpio.h> +#include <init.h> +#include <mci.h> +#include <io.h> + +#include <mach/clock.h> +#include <mach/imx-regs.h> +#include <mach/iomux-imx28.h> +#include <mach/mci.h> + +#include <asm/armlinux.h> +#include <asm/mmu.h> + +#include <generated/mach-types.h> + +#define MX28EVK_FEC_PHY_RESET_GPIO 141 + +/* setup the CPU card internal signals */ +static const uint32_t mx28evk_pads[] = { + /* duart */ + PWM0_DUART_RX | VE_3_3V, + PWM1_DUART_TX | VE_3_3V, + + /* fec0 */ + ENET_CLK | VE_3_3V | BITKEEPER(0), + ENET0_MDC | VE_3_3V | PULLUP(1), + ENET0_MDIO | VE_3_3V | PULLUP(1), + ENET0_TXD0 | VE_3_3V | PULLUP(1), + ENET0_TXD1 | VE_3_3V | PULLUP(1), + ENET0_TX_EN | VE_3_3V | PULLUP(1), + ENET0_TX_CLK | VE_3_3V | BITKEEPER(0), + ENET0_RXD0 | VE_3_3V | PULLUP(1), + ENET0_RXD1 | VE_3_3V | PULLUP(1), + ENET0_RX_EN | VE_3_3V | PULLUP(1), + /* send a "good morning" to the ext. phy 0 = reset */ + ENET0_RX_CLK_GPIO | VE_3_3V | PULLUP(0) | GPIO_OUT | GPIO_VALUE(0), + /* phy power control 1 = on */ + SSP1_D3_GPIO | VE_3_3V | PULLUP(0) | GPIO_OUT | GPIO_VALUE(0), + + /* mmc0 */ + SSP0_D0 | VE_3_3V | PULLUP(1), + SSP0_D1 | VE_3_3V | PULLUP(1), + SSP0_D2 | VE_3_3V | PULLUP(1), + SSP0_D3 | VE_3_3V | PULLUP(1), + SSP0_D4 | VE_3_3V | PULLUP(1), + SSP0_D5 | VE_3_3V | PULLUP(1), + SSP0_D6 | VE_3_3V | PULLUP(1), + SSP0_D7 | VE_3_3V | PULLUP(1), + SSP0_CMD | VE_3_3V | PULLUP(1), + SSP0_CD | VE_3_3V | PULLUP(1), + SSP0_SCK | VE_3_3V | BITKEEPER(0), + /* MCI slot power control 1 = off */ + PWM3_GPIO | VE_3_3V | GPIO_OUT | GPIO_VALUE(0), + /* MCI write protect 1 = not protected */ + SSP1_SCK_GPIO | VE_3_3V | GPIO_IN, +}; + +static struct mxs_mci_platform_data mci_pdata = { + .caps = MMC_MODE_8BIT, + .voltages = MMC_VDD_32_33 | MMC_VDD_33_34, /* fixed to 3.3 V */ + .f_min = 400 * 1000, + .f_max = 25000000, +}; + +/* fec */ +static void __init mx28_evk_fec_reset(void) +{ + mdelay(1); + gpio_set_value(MX28EVK_FEC_PHY_RESET_GPIO, 1); +} + +/* PhyAD[0..2]=0, RMIISEL=1 */ +static struct fec_platform_data fec_info = { + .xcv_type = RMII, + .phy_addr = 0, +}; + +static int mx28_evk_mem_init(void) +{ + arm_add_mem_device("ram0", IMX_MEMORY_BASE, 128 * 1024 * 1024); + + return 0; +} +mem_initcall(mx28_evk_mem_init); + +static int mx28_evk_devices_init(void) +{ + int i; + + /* initizalize muxing */ + for (i = 0; i < ARRAY_SIZE(mx28evk_pads); i++) + imx_gpio_mode(mx28evk_pads[i]); + + /* enable IOCLK0 to run at the PLL frequency */ + imx_set_ioclk(0, 480000000); + /* run the SSP unit clock at 100 MHz */ + imx_set_sspclk(0, 100000000, 1); + + armlinux_set_bootparams((void *)IMX_MEMORY_BASE + 0x100); + armlinux_set_architecture(MACH_TYPE_MX28EVK); + + add_generic_device("mxs_mci", 0, NULL, IMX_SSP0_BASE, 0, + IORESOURCE_MEM, &mci_pdata); + + imx_enable_enetclk(); + mx28_evk_fec_reset(); + add_generic_device("fec_imx", 0, NULL, IMX_FEC0_BASE, 0, + IORESOURCE_MEM, &fec_info); + + return 0; +} +device_initcall(mx28_evk_devices_init); + +static int mx28_evk_console_init(void) +{ + add_generic_device("stm_serial", 0, NULL, IMX_DBGUART_BASE, 8192, + IORESOURCE_MEM, NULL); + + return 0; +} +console_initcall(mx28_evk_console_init); |