diff options
Diffstat (limited to 'arch/arm/mach-mxs/mach-m28evk.c')
| -rw-r--r-- | arch/arm/mach-mxs/mach-m28evk.c | 366 |
1 files changed, 366 insertions, 0 deletions
diff --git a/arch/arm/mach-mxs/mach-m28evk.c b/arch/arm/mach-mxs/mach-m28evk.c new file mode 100644 index 00000000000..3b1681e4f49 --- /dev/null +++ b/arch/arm/mach-mxs/mach-m28evk.c @@ -0,0 +1,366 @@ +/* + * Copyright (C) 2011 + * Stefano Babic, DENX Software Engineering, <sbabic@denx.de> + * + * based on: mach-mx28_evk.c + * Copyright 2010 Freescale Semiconductor, Inc. All Rights Reserved. + * + * 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 <linux/delay.h> +#include <linux/platform_device.h> +#include <linux/gpio.h> +#include <linux/leds.h> +#include <linux/irq.h> +#include <linux/clk.h> +#include <linux/i2c.h> +#include <linux/i2c/at24.h> + +#include <asm/mach-types.h> +#include <asm/mach/arch.h> +#include <asm/mach/time.h> + +#include <mach/common.h> +#include <mach/iomux-mx28.h> + +#include "devices-mx28.h" + +#define M28EVK_GPIO_USERLED1 MXS_GPIO_NR(3, 16) +#define M28EVK_GPIO_USERLED2 MXS_GPIO_NR(3, 17) + +#define MX28EVK_BL_ENABLE MXS_GPIO_NR(3, 18) +#define M28EVK_LCD_ENABLE MXS_GPIO_NR(3, 28) + +#define MX28EVK_MMC0_WRITE_PROTECT MXS_GPIO_NR(2, 12) +#define MX28EVK_MMC1_WRITE_PROTECT MXS_GPIO_NR(0, 28) + +static const iomux_cfg_t m28evk_pads[] __initconst = { + /* duart */ + MX28_PAD_AUART0_CTS__DUART_RX | MXS_PAD_CTRL, + MX28_PAD_AUART0_RTS__DUART_TX | MXS_PAD_CTRL, + + /* auart0 */ + MX28_PAD_AUART0_RX__AUART0_RX | MXS_PAD_CTRL, + MX28_PAD_AUART0_TX__AUART0_TX | MXS_PAD_CTRL, + + /* auart3 */ + MX28_PAD_AUART3_RX__AUART3_RX | MXS_PAD_CTRL, + MX28_PAD_AUART3_TX__AUART3_TX | MXS_PAD_CTRL, + MX28_PAD_AUART3_CTS__AUART3_CTS | MXS_PAD_CTRL, + MX28_PAD_AUART3_RTS__AUART3_RTS | MXS_PAD_CTRL, + +#define MXS_PAD_FEC (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP) + /* fec0 */ + MX28_PAD_ENET0_MDC__ENET0_MDC | MXS_PAD_FEC, + MX28_PAD_ENET0_MDIO__ENET0_MDIO | MXS_PAD_FEC, + MX28_PAD_ENET0_RX_EN__ENET0_RX_EN | MXS_PAD_FEC, + MX28_PAD_ENET0_RXD0__ENET0_RXD0 | MXS_PAD_FEC, + MX28_PAD_ENET0_RXD1__ENET0_RXD1 | MXS_PAD_FEC, + MX28_PAD_ENET0_TX_EN__ENET0_TX_EN | MXS_PAD_FEC, + MX28_PAD_ENET0_TXD0__ENET0_TXD0 | MXS_PAD_FEC, + MX28_PAD_ENET0_TXD1__ENET0_TXD1 | MXS_PAD_FEC, + MX28_PAD_ENET_CLK__CLKCTRL_ENET | MXS_PAD_FEC, + /* fec1 */ + MX28_PAD_ENET0_CRS__ENET1_RX_EN | MXS_PAD_FEC, + MX28_PAD_ENET0_RXD2__ENET1_RXD0 | MXS_PAD_FEC, + MX28_PAD_ENET0_RXD3__ENET1_RXD1 | MXS_PAD_FEC, + MX28_PAD_ENET0_COL__ENET1_TX_EN | MXS_PAD_FEC, + MX28_PAD_ENET0_TXD2__ENET1_TXD0 | MXS_PAD_FEC, + MX28_PAD_ENET0_TXD3__ENET1_TXD1 | MXS_PAD_FEC, + + /* flexcan0 */ + MX28_PAD_GPMI_RDY2__CAN0_TX, + MX28_PAD_GPMI_RDY3__CAN0_RX, + + /* flexcan1 */ + MX28_PAD_GPMI_CE2N__CAN1_TX, + MX28_PAD_GPMI_CE3N__CAN1_RX, + + /* I2C */ + MX28_PAD_I2C0_SCL__I2C0_SCL, + MX28_PAD_I2C0_SDA__I2C0_SDA, + + /* mxsfb (lcdif) */ + MX28_PAD_LCD_D00__LCD_D0 | MXS_PAD_CTRL, + MX28_PAD_LCD_D01__LCD_D1 | MXS_PAD_CTRL, + MX28_PAD_LCD_D02__LCD_D2 | MXS_PAD_CTRL, + MX28_PAD_LCD_D03__LCD_D3 | MXS_PAD_CTRL, + MX28_PAD_LCD_D04__LCD_D4 | MXS_PAD_CTRL, + MX28_PAD_LCD_D05__LCD_D5 | MXS_PAD_CTRL, + MX28_PAD_LCD_D06__LCD_D6 | MXS_PAD_CTRL, + MX28_PAD_LCD_D07__LCD_D7 | MXS_PAD_CTRL, + MX28_PAD_LCD_D08__LCD_D8 | MXS_PAD_CTRL, + MX28_PAD_LCD_D09__LCD_D9 | MXS_PAD_CTRL, + MX28_PAD_LCD_D10__LCD_D10 | MXS_PAD_CTRL, + MX28_PAD_LCD_D11__LCD_D11 | MXS_PAD_CTRL, + MX28_PAD_LCD_D12__LCD_D12 | MXS_PAD_CTRL, + MX28_PAD_LCD_D13__LCD_D13 | MXS_PAD_CTRL, + MX28_PAD_LCD_D14__LCD_D14 | MXS_PAD_CTRL, + MX28_PAD_LCD_D15__LCD_D15 | MXS_PAD_CTRL, + MX28_PAD_LCD_D16__LCD_D16 | MXS_PAD_CTRL, + MX28_PAD_LCD_D17__LCD_D17 | MXS_PAD_CTRL, + MX28_PAD_LCD_D18__LCD_D18 | MXS_PAD_CTRL, + MX28_PAD_LCD_D19__LCD_D19 | MXS_PAD_CTRL, + MX28_PAD_LCD_D20__LCD_D20 | MXS_PAD_CTRL, + MX28_PAD_LCD_D21__LCD_D21 | MXS_PAD_CTRL, + MX28_PAD_LCD_D22__LCD_D22 | MXS_PAD_CTRL, + MX28_PAD_LCD_D23__LCD_D23 | MXS_PAD_CTRL, + + MX28_PAD_LCD_ENABLE__LCD_ENABLE | MXS_PAD_CTRL, + MX28_PAD_LCD_DOTCLK__LCD_DOTCLK | MXS_PAD_CTRL, + + /* mmc0 */ + MX28_PAD_SSP0_DATA0__SSP0_D0 | + (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP), + MX28_PAD_SSP0_DATA1__SSP0_D1 | + (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP), + MX28_PAD_SSP0_DATA2__SSP0_D2 | + (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP), + MX28_PAD_SSP0_DATA3__SSP0_D3 | + (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP), + MX28_PAD_SSP0_DATA4__SSP0_D4 | + (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP), + MX28_PAD_SSP0_DATA5__SSP0_D5 | + (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP), + MX28_PAD_SSP0_DATA6__SSP0_D6 | + (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP), + MX28_PAD_SSP0_DATA7__SSP0_D7 | + (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP), + MX28_PAD_SSP0_CMD__SSP0_CMD | + (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP), + MX28_PAD_SSP0_DETECT__SSP0_CARD_DETECT | + (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_NOPULL), + MX28_PAD_SSP0_SCK__SSP0_SCK | + (MXS_PAD_12MA | MXS_PAD_3V3 | MXS_PAD_NOPULL), + + /* mmc1 */ + MX28_PAD_GPMI_D00__SSP1_D0 | + (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP), + MX28_PAD_GPMI_D01__SSP1_D1 | + (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP), + MX28_PAD_GPMI_D02__SSP1_D2 | + (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP), + MX28_PAD_GPMI_D03__SSP1_D3 | + (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP), + MX28_PAD_GPMI_D04__SSP1_D4 | + (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP), + MX28_PAD_GPMI_D05__SSP1_D5 | + (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP), + MX28_PAD_GPMI_D06__SSP1_D6 | + (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP), + MX28_PAD_GPMI_D07__SSP1_D7 | + (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP), + MX28_PAD_GPMI_RDY1__SSP1_CMD | + (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP), + MX28_PAD_GPMI_RDY0__SSP1_CARD_DETECT | + (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_NOPULL), + MX28_PAD_GPMI_WRN__SSP1_SCK | + (MXS_PAD_12MA | MXS_PAD_3V3 | MXS_PAD_NOPULL), + /* write protect */ + MX28_PAD_GPMI_RESETN__GPIO_0_28 | + (MXS_PAD_4MA | MXS_PAD_3V3 | MXS_PAD_NOPULL), + /* slot power enable */ + MX28_PAD_PWM4__GPIO_3_29 | + (MXS_PAD_4MA | MXS_PAD_3V3 | MXS_PAD_NOPULL), + + /* led */ + MX28_PAD_PWM0__GPIO_3_16 | MXS_PAD_CTRL, + MX28_PAD_PWM1__GPIO_3_17 | MXS_PAD_CTRL, + + /* nand */ + MX28_PAD_GPMI_D00__GPMI_D0 | + (MXS_PAD_4MA | MXS_PAD_1V8 | MXS_PAD_NOPULL), + MX28_PAD_GPMI_D01__GPMI_D1 | + (MXS_PAD_4MA | MXS_PAD_1V8 | MXS_PAD_NOPULL), + MX28_PAD_GPMI_D02__GPMI_D2 | + (MXS_PAD_4MA | MXS_PAD_1V8 | MXS_PAD_NOPULL), + MX28_PAD_GPMI_D03__GPMI_D3 | + (MXS_PAD_4MA | MXS_PAD_1V8 | MXS_PAD_NOPULL), + MX28_PAD_GPMI_D04__GPMI_D4 | + (MXS_PAD_4MA | MXS_PAD_1V8 | MXS_PAD_NOPULL), + MX28_PAD_GPMI_D05__GPMI_D5 | + (MXS_PAD_4MA | MXS_PAD_1V8 | MXS_PAD_NOPULL), + MX28_PAD_GPMI_D06__GPMI_D6 | + (MXS_PAD_4MA | MXS_PAD_1V8 | MXS_PAD_NOPULL), + MX28_PAD_GPMI_D07__GPMI_D7 | + (MXS_PAD_4MA | MXS_PAD_1V8 | MXS_PAD_NOPULL), + MX28_PAD_GPMI_CE0N__GPMI_CE0N | + (MXS_PAD_4MA | MXS_PAD_1V8 | MXS_PAD_NOPULL), + MX28_PAD_GPMI_RDY0__GPMI_READY0 | + (MXS_PAD_4MA | MXS_PAD_1V8 | MXS_PAD_NOPULL), + MX28_PAD_GPMI_RDN__GPMI_RDN | + (MXS_PAD_12MA | MXS_PAD_1V8 | MXS_PAD_PULLUP), + MX28_PAD_GPMI_WRN__GPMI_WRN | + (MXS_PAD_12MA | MXS_PAD_1V8 | MXS_PAD_PULLUP), + MX28_PAD_GPMI_ALE__GPMI_ALE | + (MXS_PAD_4MA | MXS_PAD_1V8 | MXS_PAD_PULLUP), + MX28_PAD_GPMI_CLE__GPMI_CLE | + (MXS_PAD_4MA | MXS_PAD_1V8 | MXS_PAD_PULLUP), + MX28_PAD_GPMI_RESETN__GPMI_RESETN | + (MXS_PAD_12MA | MXS_PAD_1V8 | MXS_PAD_PULLUP), + + /* Backlight */ + MX28_PAD_PWM3__GPIO_3_28 | MXS_PAD_CTRL, +}; + +/* led */ +static const struct gpio_led m28evk_leds[] __initconst = { + { + .name = "user-led1", + .default_trigger = "heartbeat", + .gpio = M28EVK_GPIO_USERLED1, + }, + { + .name = "user-led2", + .default_trigger = "heartbeat", + .gpio = M28EVK_GPIO_USERLED2, + }, +}; + +static const struct gpio_led_platform_data m28evk_led_data __initconst = { + .leds = m28evk_leds, + .num_leds = ARRAY_SIZE(m28evk_leds), +}; + +static struct fec_platform_data mx28_fec_pdata[] __initdata = { + { + /* fec0 */ + .phy = PHY_INTERFACE_MODE_RMII, + }, { + /* fec1 */ + .phy = PHY_INTERFACE_MODE_RMII, + }, +}; + +static int __init m28evk_fec_get_mac(void) +{ + int i; + u32 val; + const u32 *ocotp = mxs_get_ocotp(); + + if (!ocotp) { + pr_err("%s: timeout when reading fec mac from OCOTP\n", + __func__); + return -ETIMEDOUT; + } + + /* + * OCOTP only stores the last 4 octets for each mac address, + * so hard-code DENX OUI (C0:E5:4E) here. + */ + for (i = 0; i < 2; i++) { + val = ocotp[i * 4]; + mx28_fec_pdata[i].mac[0] = 0xC0; + mx28_fec_pdata[i].mac[1] = 0xE5; + mx28_fec_pdata[i].mac[2] = 0x4E; + mx28_fec_pdata[i].mac[3] = (val >> 16) & 0xff; + mx28_fec_pdata[i].mac[4] = (val >> 8) & 0xff; + mx28_fec_pdata[i].mac[5] = (val >> 0) & 0xff; + } + + return 0; +} + +/* mxsfb (lcdif) */ +static struct fb_videomode m28evk_video_modes[] = { + { + .name = "Ampire AM-800480R2TMQW-T01H", + .refresh = 60, + .xres = 800, + .yres = 480, + .pixclock = 30066, /* picosecond (33.26 MHz) */ + .left_margin = 0, + .right_margin = 256, + .upper_margin = 0, + .lower_margin = 45, + .hsync_len = 1, + .vsync_len = 1, + .sync = FB_SYNC_DATA_ENABLE_HIGH_ACT, + }, +}; + +static const struct mxsfb_platform_data m28evk_mxsfb_pdata __initconst = { + .mode_list = m28evk_video_modes, + .mode_count = ARRAY_SIZE(m28evk_video_modes), + .default_bpp = 16, + .ld_intf_width = STMLCDIF_18BIT, +}; + +static struct at24_platform_data m28evk_eeprom = { + .byte_len = 16384, + .page_size = 32, + .flags = AT24_FLAG_ADDR16, +}; + +static struct i2c_board_info m28_stk5v3_i2c_boardinfo[] __initdata = { + { + I2C_BOARD_INFO("at24", 0x51), /* E0=1, E1=0, E2=0 */ + .platform_data = &m28evk_eeprom, + }, +}; + +static struct mxs_mmc_platform_data m28evk_mmc_pdata[] __initdata = { + { + /* mmc0 */ + .wp_gpio = MX28EVK_MMC0_WRITE_PROTECT, + .flags = SLOTF_8_BIT_CAPABLE, + }, { + /* mmc1 */ + .wp_gpio = MX28EVK_MMC1_WRITE_PROTECT, + .flags = SLOTF_8_BIT_CAPABLE, + }, +}; + +static void __init m28evk_init(void) +{ + mxs_iomux_setup_multiple_pads(m28evk_pads, ARRAY_SIZE(m28evk_pads)); + + mx28_add_duart(); + mx28_add_auart0(); + mx28_add_auart3(); + + if (!m28evk_fec_get_mac()) { + mx28_add_fec(0, &mx28_fec_pdata[0]); + mx28_add_fec(1, &mx28_fec_pdata[1]); + } + + mx28_add_flexcan(0, NULL); + mx28_add_flexcan(1, NULL); + + mx28_add_mxsfb(&m28evk_mxsfb_pdata); + + mx28_add_mxs_mmc(0, &m28evk_mmc_pdata[0]); + mx28_add_mxs_mmc(1, &m28evk_mmc_pdata[1]); + + gpio_led_register_device(0, &m28evk_led_data); + + /* I2C */ + mx28_add_mxs_i2c(0); + i2c_register_board_info(0, m28_stk5v3_i2c_boardinfo, + ARRAY_SIZE(m28_stk5v3_i2c_boardinfo)); +} + +static void __init m28evk_timer_init(void) +{ + mx28_clocks_init(); +} + +static struct sys_timer m28evk_timer = { + .init = m28evk_timer_init, +}; + +MACHINE_START(M28EVK, "DENX M28 EVK") + .map_io = mx28_map_io, + .init_irq = mx28_init_irq, + .init_machine = m28evk_init, + .timer = &m28evk_timer, +MACHINE_END |