diff options
Diffstat (limited to 'roms/u-boot/board/freescale/mx25pdk/mx25pdk.c')
| -rw-r--r-- | roms/u-boot/board/freescale/mx25pdk/mx25pdk.c | 188 |
1 files changed, 188 insertions, 0 deletions
diff --git a/roms/u-boot/board/freescale/mx25pdk/mx25pdk.c b/roms/u-boot/board/freescale/mx25pdk/mx25pdk.c new file mode 100644 index 00000000..71a395c2 --- /dev/null +++ b/roms/u-boot/board/freescale/mx25pdk/mx25pdk.c @@ -0,0 +1,188 @@ +/* + * (C) Copyright 2011 Freescale Semiconductor, Inc. + * + * Author: Fabio Estevam <fabio.estevam@freescale.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <asm/io.h> +#include <asm/gpio.h> +#include <asm/arch/imx-regs.h> +#include <asm/arch/iomux-mx25.h> +#include <asm/arch/clock.h> +#include <mmc.h> +#include <fsl_esdhc.h> +#include <i2c.h> +#include <power/pmic.h> +#include <fsl_pmic.h> +#include <mc34704.h> + +#define FEC_RESET_B IMX_GPIO_NR(4, 8) +#define FEC_ENABLE_B IMX_GPIO_NR(2, 3) +#define CARD_DETECT IMX_GPIO_NR(2, 1) + +DECLARE_GLOBAL_DATA_PTR; + +#ifdef CONFIG_FSL_ESDHC +struct fsl_esdhc_cfg esdhc_cfg[1] = { + {IMX_MMC_SDHC1_BASE}, +}; +#endif + +/* + * FIXME: need to revisit this + * The original code enabled PUE and 100-k pull-down without PKE, so the right + * value here is likely: + * 0 for no pull + * or: + * PAD_CTL_PUS_100K_DOWN for 100-k pull-down + */ +#define FEC_OUT_PAD_CTRL 0 + +#define I2C_PAD_CTRL (PAD_CTL_HYS | PAD_CTL_PUS_100K_UP | \ + PAD_CTL_ODE) + +static void mx25pdk_fec_init(void) +{ + static const iomux_v3_cfg_t fec_pads[] = { + MX25_PAD_FEC_TX_CLK__FEC_TX_CLK, + MX25_PAD_FEC_RX_DV__FEC_RX_DV, + MX25_PAD_FEC_RDATA0__FEC_RDATA0, + NEW_PAD_CTRL(MX25_PAD_FEC_TDATA0__FEC_TDATA0, FEC_OUT_PAD_CTRL), + NEW_PAD_CTRL(MX25_PAD_FEC_TX_EN__FEC_TX_EN, FEC_OUT_PAD_CTRL), + NEW_PAD_CTRL(MX25_PAD_FEC_MDC__FEC_MDC, FEC_OUT_PAD_CTRL), + MX25_PAD_FEC_MDIO__FEC_MDIO, + MX25_PAD_FEC_RDATA1__FEC_RDATA1, + NEW_PAD_CTRL(MX25_PAD_FEC_TDATA1__FEC_TDATA1, FEC_OUT_PAD_CTRL), + + NEW_PAD_CTRL(MX25_PAD_D12__GPIO_4_8, 0), /* FEC_RESET_B */ + NEW_PAD_CTRL(MX25_PAD_A17__GPIO_2_3, 0), /* FEC_ENABLE_B */ + }; + + static const iomux_v3_cfg_t i2c_pads[] = { + NEW_PAD_CTRL(MX25_PAD_I2C1_CLK__I2C1_CLK, I2C_PAD_CTRL), + NEW_PAD_CTRL(MX25_PAD_I2C1_DAT__I2C1_DAT, I2C_PAD_CTRL), + }; + + imx_iomux_v3_setup_multiple_pads(fec_pads, ARRAY_SIZE(fec_pads)); + + /* Assert RESET and ENABLE low */ + gpio_direction_output(FEC_RESET_B, 0); + gpio_direction_output(FEC_ENABLE_B, 0); + + udelay(10); + + /* Deassert RESET and ENABLE */ + gpio_set_value(FEC_RESET_B, 1); + gpio_set_value(FEC_ENABLE_B, 1); + + /* Setup I2C pins so that PMIC can turn on PHY supply */ + imx_iomux_v3_setup_multiple_pads(i2c_pads, ARRAY_SIZE(i2c_pads)); +} + +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; +} + +/* + * Set up input pins with hysteresis and 100-k pull-ups + */ +#define UART1_IN_PAD_CTRL (PAD_CTL_HYS | PAD_CTL_PUS_100K_UP) +/* + * FIXME: need to revisit this + * The original code enabled PUE and 100-k pull-down without PKE, so the right + * value here is likely: + * 0 for no pull + * or: + * PAD_CTL_PUS_100K_DOWN for 100-k pull-down + */ +#define UART1_OUT_PAD_CTRL 0 + +static void mx25pdk_uart1_init(void) +{ + static const iomux_v3_cfg_t uart1_pads[] = { + NEW_PAD_CTRL(MX25_PAD_UART1_RXD__UART1_RXD, UART1_IN_PAD_CTRL), + NEW_PAD_CTRL(MX25_PAD_UART1_TXD__UART1_TXD, UART1_OUT_PAD_CTRL), + NEW_PAD_CTRL(MX25_PAD_UART1_RTS__UART1_RTS, UART1_OUT_PAD_CTRL), + NEW_PAD_CTRL(MX25_PAD_UART1_CTS__UART1_CTS, UART1_IN_PAD_CTRL), + }; + + imx_iomux_v3_setup_multiple_pads(uart1_pads, ARRAY_SIZE(uart1_pads)); +} + +int board_early_init_f(void) +{ + mx25pdk_uart1_init(); + + return 0; +} + +int board_init(void) +{ + /* address of boot parameters */ + gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100; + + return 0; +} + +int board_late_init(void) +{ + struct pmic *p; + int ret; + + mx25pdk_fec_init(); + + ret = pmic_init(I2C_0); + if (ret) + return ret; + + p = pmic_get("FSL_PMIC"); + if (!p) + return -ENODEV; + + /* Turn on Ethernet PHY supply */ + pmic_reg_write(p, MC34704_GENERAL2_REG, ONOFFE); + + return 0; +} + +#ifdef CONFIG_FSL_ESDHC +int board_mmc_getcd(struct mmc *mmc) +{ + /* Set up the Card Detect pin. */ + imx_iomux_v3_setup_pad(NEW_PAD_CTRL(MX25_PAD_A15__GPIO_2_1, 0)); + + gpio_direction_input(CARD_DETECT); + return !gpio_get_value(CARD_DETECT); +} + +int board_mmc_init(bd_t *bis) +{ + static const iomux_v3_cfg_t sdhc1_pads[] = { + NEW_PAD_CTRL(MX25_PAD_SD1_CMD__SD1_CMD, NO_PAD_CTRL), + NEW_PAD_CTRL(MX25_PAD_SD1_CLK__SD1_CLK, NO_PAD_CTRL), + NEW_PAD_CTRL(MX25_PAD_SD1_DATA0__SD1_DATA0, NO_PAD_CTRL), + NEW_PAD_CTRL(MX25_PAD_SD1_DATA1__SD1_DATA1, NO_PAD_CTRL), + NEW_PAD_CTRL(MX25_PAD_SD1_DATA2__SD1_DATA2, NO_PAD_CTRL), + NEW_PAD_CTRL(MX25_PAD_SD1_DATA3__SD1_DATA3, NO_PAD_CTRL), + }; + + imx_iomux_v3_setup_multiple_pads(sdhc1_pads, ARRAY_SIZE(sdhc1_pads)); + + esdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC1_CLK); + return fsl_esdhc_initialize(bis, &esdhc_cfg[0]); +} +#endif + +int checkboard(void) +{ + puts("Board: MX25PDK\n"); + + return 0; +} |