diff options
Diffstat (limited to 'board/genesi/mx51_efikamx/efikamx.c')
| -rw-r--r-- | board/genesi/mx51_efikamx/efikamx.c | 509 |
1 files changed, 509 insertions, 0 deletions
diff --git a/board/genesi/mx51_efikamx/efikamx.c b/board/genesi/mx51_efikamx/efikamx.c new file mode 100644 index 000000000..cfd2e938b --- /dev/null +++ b/board/genesi/mx51_efikamx/efikamx.c @@ -0,0 +1,509 @@ +/* + * Copyright (C) 2009 Freescale Semiconductor, Inc. + * Copyright (C) 2010 Marek Vasut <marek.vasut@gmail.com> + * Copyright (C) 2009-2012 Genesi USA, Inc. + * + * See file CREDITS for list of people who contributed to this + * project. + * + * 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. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include <common.h> +#include <asm/io.h> +#include <asm/arch/iomux-mx51.h> +#include <asm/gpio.h> +#include <asm/errno.h> +#include <asm/arch/sys_proto.h> +#include <asm/arch/crm_regs.h> +#include <i2c.h> +#include <mmc.h> +#include <fsl_esdhc.h> +#include <pmic.h> +#include <fsl_pmic.h> +#include <mc13892.h> + +DECLARE_GLOBAL_DATA_PTR; + +/* + * Compile-time error checking + */ +#ifndef CONFIG_MXC_SPI +#error "CONFIG_MXC_SPI not set, this is essential for board's operation!" +#endif + +/* + * Board revisions + * + * Note that we get these revisions here for convenience, but we only set + * up for the production model Smarttop (1.3) and Smartbook (2.0). + * + */ +#define EFIKAMX_BOARD_REV_11 0x1 +#define EFIKAMX_BOARD_REV_12 0x2 +#define EFIKAMX_BOARD_REV_13 0x3 +#define EFIKAMX_BOARD_REV_14 0x4 + +#define EFIKASB_BOARD_REV_13 0x1 +#define EFIKASB_BOARD_REV_20 0x2 + +/* + * Board identification + */ +static u32 get_mx_rev(void) +{ + u32 rev = 0; + /* + * Retrieve board ID: + * + * gpio: 16 17 11 + * ============== + * r1.1: 1+ 1 1 + * r1.2: 1 1 0 + * r1.3: 1 0 1 + * r1.4: 1 0 0 + * + * + note: r1.1 does not strap this pin properly so it needs to + * be hacked or ignored. + */ + + /* set to 1 in order to get correct value on board rev 1.1 */ + gpio_direction_output(IMX_GPIO_NR(3, 16), 1); + gpio_direction_input(IMX_GPIO_NR(3, 11)); + gpio_direction_input(IMX_GPIO_NR(3, 16)); + gpio_direction_input(IMX_GPIO_NR(3, 17)); + + rev |= (!!gpio_get_value(IMX_GPIO_NR(3, 16))) << 0; + rev |= (!!gpio_get_value(IMX_GPIO_NR(3, 17))) << 1; + rev |= (!!gpio_get_value(IMX_GPIO_NR(3, 11))) << 2; + + return (~rev & 0x7) + 1; +} + +static iomux_v3_cfg_t efikasb_revision_pads[] = { + MX51_PAD_EIM_CS3__GPIO2_28, + MX51_PAD_EIM_CS4__GPIO2_29, +}; + +static inline u32 get_sb_rev(void) +{ + u32 rev = 0; + + imx_iomux_v3_setup_multiple_pads(efikasb_revision_pads, + ARRAY_SIZE(efikasb_revision_pads)); + gpio_direction_input(IMX_GPIO_NR(2, 28)); + gpio_direction_input(IMX_GPIO_NR(2, 29)); + + rev |= (!!gpio_get_value(IMX_GPIO_NR(2, 28))) << 0; + rev |= (!!gpio_get_value(IMX_GPIO_NR(2, 29))) << 1; + + return rev; +} + +inline uint32_t get_efikamx_rev(void) +{ + if (machine_is_efikamx()) + return get_mx_rev(); + else if (machine_is_efikasb()) + return get_sb_rev(); +} + +u32 get_board_rev(void) +{ + return get_cpu_rev() | (get_efikamx_rev() << 8); +} + +/* + * DRAM initialization + */ +int dram_init(void) +{ + /* dram_init must store complete ramsize in gd->ram_size */ + gd->ram_size = get_ram_size((void *)CONFIG_SYS_SDRAM_BASE, + PHYS_SDRAM_1_SIZE); + return 0; +} + +/* + * UART configuration + */ +static iomux_v3_cfg_t efikamx_uart_pads[] = { + MX51_PAD_UART1_RXD__UART1_RXD, + MX51_PAD_UART1_TXD__UART1_TXD, + MX51_PAD_UART1_RTS__UART1_RTS, + MX51_PAD_UART1_CTS__UART1_CTS, +}; + +/* + * SPI configuration + */ +static iomux_v3_cfg_t efikamx_spi_pads[] = { + MX51_PAD_CSPI1_MOSI__ECSPI1_MOSI, + MX51_PAD_CSPI1_MISO__ECSPI1_MISO, + MX51_PAD_CSPI1_SCLK__ECSPI1_SCLK, + MX51_PAD_CSPI1_SS0__GPIO4_24, + MX51_PAD_CSPI1_SS1__GPIO4_25, + MX51_PAD_GPIO1_6__GPIO1_6, +}; + +#define EFIKAMX_SPI_SS0 IMX_GPIO_NR(4, 24) +#define EFIKAMX_SPI_SS1 IMX_GPIO_NR(4, 25) +#define EFIKAMX_PMIC_IRQ IMX_GPIO_NR(1, 6) + +/* + * PMIC configuration + */ +#ifdef CONFIG_MXC_SPI +static void power_init(void) +{ + unsigned int val; + struct mxc_ccm_reg *mxc_ccm = (struct mxc_ccm_reg *)MXC_CCM_BASE; + struct pmic *p; + + pmic_init(); + p = get_pmic(); + + /* Write needed to Power Gate 2 register */ + pmic_reg_read(p, REG_POWER_MISC, &val); + val &= ~PWGT2SPIEN; + pmic_reg_write(p, REG_POWER_MISC, val); + + /* Externally powered */ + pmic_reg_read(p, REG_CHARGE, &val); + val |= ICHRG0 | ICHRG1 | ICHRG2 | ICHRG3 | CHGAUTOB; + pmic_reg_write(p, REG_CHARGE, val); + + /* power up the system first */ + pmic_reg_write(p, REG_POWER_MISC, PWUP); + + /* Set core voltage to 1.1V */ + pmic_reg_read(p, REG_SW_0, &val); + val = (val & ~SWx_VOLT_MASK) | SWx_1_100V; + pmic_reg_write(p, REG_SW_0, val); + + /* Setup VCC (SW2) to 1.25 */ + pmic_reg_read(p, REG_SW_1, &val); + val = (val & ~SWx_VOLT_MASK) | SWx_1_250V; + pmic_reg_write(p, REG_SW_1, val); + + /* Setup 1V2_DIG1 (SW3) to 1.25 */ + pmic_reg_read(p, REG_SW_2, &val); + val = (val & ~SWx_VOLT_MASK) | SWx_1_250V; + pmic_reg_write(p, REG_SW_2, val); + udelay(50); + + /* Raise the core frequency to 800MHz */ + writel(0x0, &mxc_ccm->cacrr); + + /* Set switchers in Auto in NORMAL mode & STANDBY mode */ + /* Setup the switcher mode for SW1 & SW2*/ + pmic_reg_read(p, REG_SW_4, &val); + val = (val & ~((SWMODE_MASK << SWMODE1_SHIFT) | + (SWMODE_MASK << SWMODE2_SHIFT))); + val |= (SWMODE_AUTO_AUTO << SWMODE1_SHIFT) | + (SWMODE_AUTO_AUTO << SWMODE2_SHIFT); + pmic_reg_write(p, REG_SW_4, val); + + /* Setup the switcher mode for SW3 & SW4 */ + pmic_reg_read(p, REG_SW_5, &val); + val = (val & ~((SWMODE_MASK << SWMODE3_SHIFT) | + (SWMODE_MASK << SWMODE4_SHIFT))); + val |= (SWMODE_AUTO_AUTO << SWMODE3_SHIFT) | + (SWMODE_AUTO_AUTO << SWMODE4_SHIFT); + pmic_reg_write(p, REG_SW_5, val); + + /* Set VDIG to 1.8V, VGEN3 to 1.8V, VCAM to 2.6V */ + pmic_reg_read(p, REG_SETTING_0, &val); + val &= ~(VCAM_MASK | VGEN3_MASK | VDIG_MASK); + val |= VDIG_1_8 | VGEN3_1_8 | VCAM_2_6; + pmic_reg_write(p, REG_SETTING_0, val); + + /* Set VVIDEO to 2.775V, VAUDIO to 3V, VSD to 3.15V */ + pmic_reg_read(p, REG_SETTING_1, &val); + val &= ~(VVIDEO_MASK | VSD_MASK | VAUDIO_MASK); + val |= VSD_3_15 | VAUDIO_3_0 | VVIDEO_2_775 | VGEN1_1_2 | VGEN2_3_15; + pmic_reg_write(p, REG_SETTING_1, val); + + /* Enable VGEN1, VGEN2, VDIG, VPLL */ + pmic_reg_read(p, REG_MODE_0, &val); + val |= VGEN1EN | VDIGEN | VGEN2EN | VPLLEN; + pmic_reg_write(p, REG_MODE_0, val); + + /* Configure VGEN3 and VCAM regulators to use external PNP */ + val = VGEN3CONFIG | VCAMCONFIG; + pmic_reg_write(p, REG_MODE_1, val); + udelay(200); + + /* Enable VGEN3, VCAM, VAUDIO, VVIDEO, VSD regulators */ + val = VGEN3EN | VGEN3CONFIG | VCAMEN | VCAMCONFIG | + VVIDEOEN | VAUDIOEN | VSDEN; + pmic_reg_write(p, REG_MODE_1, val); + + pmic_reg_read(p, REG_POWER_CTL2, &val); + val |= WDIRESET; + pmic_reg_write(p, REG_POWER_CTL2, val); + + udelay(2500); +} +#else +static inline void power_init(void) { } +#endif + +/* + * MMC configuration + */ +#ifdef CONFIG_FSL_ESDHC + +struct fsl_esdhc_cfg esdhc_cfg[2] = { + {MMC_SDHC1_BASE_ADDR}, + {MMC_SDHC2_BASE_ADDR}, +}; + +static iomux_v3_cfg_t efikamx_sdhc1_pads[] = { + MX51_PAD_SD1_CMD__SD1_CMD, + MX51_PAD_SD1_CLK__SD1_CLK, + MX51_PAD_SD1_DATA0__SD1_DATA0, + MX51_PAD_SD1_DATA1__SD1_DATA1, + MX51_PAD_SD1_DATA2__SD1_DATA2, + MX51_PAD_SD1_DATA3__SD1_DATA3, + MX51_PAD_GPIO1_1__SD1_WP, +}; + +#define EFIKAMX_SDHC1_WP IMX_GPIO_NR(1, 1) + +static iomux_v3_cfg_t efikamx_sdhc1_cd_pads[] = { + MX51_PAD_GPIO1_0__SD1_CD, + MX51_PAD_EIM_CS2__SD1_CD, +}; + +#define EFIKAMX_SDHC1_CD IMX_GPIO_NR(1, 0) +#define EFIKASB_SDHC1_CD IMX_GPIO_NR(2, 27) + +static iomux_v3_cfg_t efikasb_sdhc2_pads[] = { + MX51_PAD_SD2_CMD__SD2_CMD, + MX51_PAD_SD2_CLK__SD2_CLK, + MX51_PAD_SD2_DATA0__SD2_DATA0, + MX51_PAD_SD2_DATA1__SD2_DATA1, + MX51_PAD_SD2_DATA2__SD2_DATA2, + MX51_PAD_SD2_DATA3__SD2_DATA3, + MX51_PAD_GPIO1_7__SD2_WP, + MX51_PAD_GPIO1_8__SD2_CD, +}; + +#define EFIKASB_SDHC2_CD IMX_GPIO_NR(1, 8) +#define EFIKASB_SDHC2_WP IMX_GPIO_NR(1, 7) + +static inline uint32_t efikamx_mmc_getcd(u32 base) +{ + if (base == MMC_SDHC1_BASE_ADDR) + if (machine_is_efikamx()) + return EFIKAMX_SDHC1_CD; + else + return EFIKASB_SDHC1_CD; + else + return EFIKASB_SDHC2_CD; +} + +int board_mmc_getcd(struct mmc *mmc) +{ + struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv; + uint32_t cd = efikamx_mmc_getcd(cfg->esdhc_base); + int ret = !gpio_get_value(cd); + + return ret; +} + +int board_mmc_init(bd_t *bis) +{ + int ret; + + /* + * All Efika MX boards use eSDHC1 with a common write-protect GPIO + */ + imx_iomux_v3_setup_multiple_pads(efikamx_sdhc1_pads, + ARRAY_SIZE(efikamx_sdhc1_pads)); + gpio_direction_input(EFIKAMX_SDHC1_WP); + + /* + * Smartbook and Smarttop differ on the location of eSDHC1 + * carrier-detect GPIO + */ + if (machine_is_efikamx()) { + imx_iomux_v3_setup_pad(efikamx_sdhc1_cd_pads[0]); + gpio_direction_input(EFIKAMX_SDHC1_CD); + } else if (machine_is_efikasb()) { + imx_iomux_v3_setup_pad(efikamx_sdhc1_cd_pads[1]); + gpio_direction_input(EFIKASB_SDHC1_CD); + } + + ret = fsl_esdhc_initialize(bis, &esdhc_cfg[0]); + + if (machine_is_efikasb()) { + + imx_iomux_v3_setup_multiple_pads(efikasb_sdhc2_pads, + ARRAY_SIZE(efikasb_sdhc2_pads)); + gpio_direction_input(EFIKASB_SDHC2_CD); + gpio_direction_input(EFIKASB_SDHC2_WP); + if (!ret) + ret = fsl_esdhc_initialize(bis, &esdhc_cfg[1]); + } + + return ret; +} +#endif + +/* + * PATA + */ +static iomux_v3_cfg_t efikamx_pata_pads[] = { + MX51_PAD_NANDF_WE_B__PATA_DIOW, + MX51_PAD_NANDF_RE_B__PATA_DIOR, + MX51_PAD_NANDF_ALE__PATA_BUFFER_EN, + MX51_PAD_NANDF_CLE__PATA_RESET_B, + MX51_PAD_NANDF_WP_B__PATA_DMACK, + MX51_PAD_NANDF_RB0__PATA_DMARQ, + MX51_PAD_NANDF_RB1__PATA_IORDY, + MX51_PAD_GPIO_NAND__PATA_INTRQ, + MX51_PAD_NANDF_CS2__PATA_CS_0, + MX51_PAD_NANDF_CS3__PATA_CS_1, + MX51_PAD_NANDF_CS4__PATA_DA_0, + MX51_PAD_NANDF_CS5__PATA_DA_1, + MX51_PAD_NANDF_CS6__PATA_DA_2, + MX51_PAD_NANDF_D15__PATA_DATA15, + MX51_PAD_NANDF_D14__PATA_DATA14, + MX51_PAD_NANDF_D13__PATA_DATA13, + MX51_PAD_NANDF_D12__PATA_DATA12, + MX51_PAD_NANDF_D11__PATA_DATA11, + MX51_PAD_NANDF_D10__PATA_DATA10, + MX51_PAD_NANDF_D9__PATA_DATA9, + MX51_PAD_NANDF_D8__PATA_DATA8, + MX51_PAD_NANDF_D7__PATA_DATA7, + MX51_PAD_NANDF_D6__PATA_DATA6, + MX51_PAD_NANDF_D5__PATA_DATA5, + MX51_PAD_NANDF_D4__PATA_DATA4, + MX51_PAD_NANDF_D3__PATA_DATA3, + MX51_PAD_NANDF_D2__PATA_DATA2, + MX51_PAD_NANDF_D1__PATA_DATA1, + MX51_PAD_NANDF_D0__PATA_DATA0, +}; + +/* + * EHCI USB + */ +#ifdef CONFIG_CMD_USB +extern void setup_iomux_usb(void); +#else +static inline void setup_iomux_usb(void) { } +#endif + +/* + * LED configuration + * + * Smarttop LED pad config is done in the DCD + * + */ +#define EFIKAMX_LED_BLUE IMX_GPIO_NR(3, 13) +#define EFIKAMX_LED_GREEN IMX_GPIO_NR(3, 14) +#define EFIKAMX_LED_RED IMX_GPIO_NR(3, 15) + +static iomux_v3_cfg_t efikasb_led_pads[] = { + MX51_PAD_GPIO1_3__GPIO1_3, + MX51_PAD_EIM_CS0__GPIO2_25, +}; + +#define EFIKASB_CAPSLOCK_LED IMX_GPIO_NR(2, 25) +#define EFIKASB_MESSAGE_LED IMX_GPIO_NR(1, 3) /* Note: active low */ + +/* + * Board initialization + */ +int board_early_init_f(void) +{ + if (machine_is_efikasb()) { + imx_iomux_v3_setup_multiple_pads(efikasb_led_pads, + ARRAY_SIZE(efikasb_led_pads)); + gpio_direction_output(EFIKASB_CAPSLOCK_LED, 0); + gpio_direction_output(EFIKASB_MESSAGE_LED, 1); + } else if (machine_is_efikamx()) { + /* + * Set up GPIO directions for LEDs. + * IOMUX has been done in the DCD already. + * Turn the red LED on for pre-relocation code. + */ + gpio_direction_output(EFIKAMX_LED_BLUE, 0); + gpio_direction_output(EFIKAMX_LED_GREEN, 0); + gpio_direction_output(EFIKAMX_LED_RED, 1); + } + + /* + * Both these pad configurations for UART and SPI are kind of redundant + * since they are the Power-On Defaults for the i.MX51. But, it seems we + * should make absolutely sure that they are set up correctly. + */ + imx_iomux_v3_setup_multiple_pads(efikamx_uart_pads, + ARRAY_SIZE(efikamx_uart_pads)); + imx_iomux_v3_setup_multiple_pads(efikamx_spi_pads, + ARRAY_SIZE(efikamx_spi_pads)); + + /* not technically required for U-Boot operation but do it anyway. */ + gpio_direction_input(EFIKAMX_PMIC_IRQ); + /* Deselect both CS for now, otherwise NOR doesn't probe properly. */ + gpio_direction_output(EFIKAMX_SPI_SS0, 0); + gpio_direction_output(EFIKAMX_SPI_SS1, 1); + + return 0; +} + +int board_init(void) +{ + gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100; + + return 0; +} + +int board_late_init(void) +{ + if (machine_is_efikamx()) { + /* + * Set up Blue LED for "In U-Boot" status. + * We're all relocated and ready to U-Boot! + */ + gpio_set_value(EFIKAMX_LED_RED, 0); + gpio_set_value(EFIKAMX_LED_GREEN, 0); + gpio_set_value(EFIKAMX_LED_BLUE, 1); + } + + power_init(); + + imx_iomux_v3_setup_multiple_pads(efikamx_pata_pads, + ARRAY_SIZE(efikamx_pata_pads)); + setup_iomux_usb(); + + return 0; +} + +int checkboard(void) +{ + u32 rev = get_efikamx_rev(); + + printf("Board: Genesi Efika MX "); + if (machine_is_efikamx()) + printf("Smarttop (1.%i)\n", rev & 0xf); + else if (machine_is_efikasb()) + printf("Smartbook\n"); + + return 0; +} |