diff options
Diffstat (limited to 'board/compulab/cl-som-imx7/cl-som-imx7.c')
| -rw-r--r-- | board/compulab/cl-som-imx7/cl-som-imx7.c | 331 |
1 files changed, 331 insertions, 0 deletions
diff --git a/board/compulab/cl-som-imx7/cl-som-imx7.c b/board/compulab/cl-som-imx7/cl-som-imx7.c new file mode 100644 index 0000000000..f8b1cda5bb --- /dev/null +++ b/board/compulab/cl-som-imx7/cl-som-imx7.c @@ -0,0 +1,331 @@ +/* + * U-Boot board functions for CompuLab CL-SOM-iMX7 module + * + * (C) Copyright 2017 CompuLab, Ltd. http://www.compulab.com + * + * Author: Uri Mashiach <uri.mashiach@compulab.co.il> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <mmc.h> +#include <phy.h> +#include <netdev.h> +#include <fsl_esdhc.h> +#include <power/pmic.h> +#include <power/pfuze3000_pmic.h> +#include <asm/mach-imx/mxc_i2c.h> +#include <asm/mach-imx/iomux-v3.h> +#include <asm/arch-mx7/mx7-pins.h> +#include <asm/arch-mx7/sys_proto.h> +#include <asm/arch-mx7/clock.h> +#include "../common/eeprom.h" +#include "common.h" + +DECLARE_GLOBAL_DATA_PTR; + +#ifdef CONFIG_SYS_I2C_MXC + +#define I2C_PAD_CTRL (PAD_CTL_DSE_3P3V_32OHM | PAD_CTL_SRE_SLOW | \ + PAD_CTL_HYS) + +#define CL_SOM_IMX7_GPIO_I2C2_SCL IMX_GPIO_NR(1, 6) +#define CL_SOM_IMX7_GPIO_I2C2_SDA IMX_GPIO_NR(1, 7) + +static struct i2c_pads_info cl_som_imx7_i2c_pad_info2 = { + .scl = { + .i2c_mode = MX7D_PAD_GPIO1_IO06__I2C2_SCL | + MUX_PAD_CTRL(I2C_PAD_CTRL), + .gpio_mode = MX7D_PAD_GPIO1_IO06__GPIO1_IO6 | + MUX_PAD_CTRL(I2C_PAD_CTRL), + .gp = CL_SOM_IMX7_GPIO_I2C2_SCL, + }, + .sda = { + .i2c_mode = MX7D_PAD_GPIO1_IO07__I2C2_SDA | + MUX_PAD_CTRL(I2C_PAD_CTRL), + .gpio_mode = MX7D_PAD_GPIO1_IO07__GPIO1_IO7 | + MUX_PAD_CTRL(I2C_PAD_CTRL), + .gp = CL_SOM_IMX7_GPIO_I2C2_SDA, + }, +}; + +/* + * cl_som_imx7_setup_i2c() - I2C pinmux configuration. + */ +static void cl_som_imx7_setup_i2c(void) +{ + setup_i2c(0, CONFIG_SYS_I2C_SPEED, 0x7f, &cl_som_imx7_i2c_pad_info2); +} +#else /* !CONFIG_SYS_I2C_MXC */ +static void cl_som_imx7_setup_i2c(void) {} +#endif /* CONFIG_SYS_I2C_MXC */ + +int dram_init(void) +{ + gd->ram_size = imx_ddr_size(); + + return 0; +} + +#ifdef CONFIG_FSL_ESDHC + +#define CL_SOM_IMX7_GPIO_USDHC3_PWR IMX_GPIO_NR(6, 11) + +static struct fsl_esdhc_cfg cl_som_imx7_usdhc_cfg[3] = { + {USDHC1_BASE_ADDR, 0, 4}, + {USDHC3_BASE_ADDR}, +}; + +int board_mmc_init(bd_t *bis) +{ + int i, ret; + /* + * According to the board_mmc_init() the following map is done: + * (U-boot device node) (Physical Port) + * mmc0 USDHC1 + * mmc2 USDHC3 (eMMC) + */ + for (i = 0; i < CONFIG_SYS_FSL_USDHC_NUM; i++) { + switch (i) { + case 0: + cl_som_imx7_usdhc1_pads_set(); + gpio_request(CL_SOM_IMX7_GPIO_USDHC1_CD, "usdhc1_cd"); + cl_som_imx7_usdhc_cfg[0].sdhc_clk = + mxc_get_clock(MXC_ESDHC_CLK); + break; + case 1: + cl_som_imx7_usdhc3_emmc_pads_set(); + gpio_request(CL_SOM_IMX7_GPIO_USDHC3_PWR, "usdhc3_pwr"); + gpio_direction_output(CL_SOM_IMX7_GPIO_USDHC3_PWR, 0); + udelay(500); + gpio_direction_output(CL_SOM_IMX7_GPIO_USDHC3_PWR, 1); + cl_som_imx7_usdhc_cfg[1].sdhc_clk = + mxc_get_clock(MXC_ESDHC3_CLK); + break; + default: + printf("Warning: you configured more USDHC controllers " + "(%d) than supported by the board\n", i + 1); + return -EINVAL; + } + + ret = fsl_esdhc_initialize(bis, &cl_som_imx7_usdhc_cfg[i]); + if (ret) + return ret; + } + + return 0; +} +#endif /* CONFIG_FSL_ESDHC */ + +#ifdef CONFIG_FEC_MXC + +#define CL_SOM_IMX7_ETH1_PHY_NRST IMX_GPIO_NR(1, 4) + +/* + * cl_som_imx7_rgmii_rework() - Ethernet PHY configuration. + */ +static void cl_som_imx7_rgmii_rework(struct phy_device *phydev) +{ + unsigned short val; + + /* Ar8031 phy SmartEEE feature cause link status generates glitch, + * which cause ethernet link down/up issue, so disable SmartEEE + */ + phy_write(phydev, MDIO_DEVAD_NONE, 0xd, 0x3); + phy_write(phydev, MDIO_DEVAD_NONE, 0xe, 0x805d); + phy_write(phydev, MDIO_DEVAD_NONE, 0xd, 0x4003); + val = phy_read(phydev, MDIO_DEVAD_NONE, 0xe); + val &= ~(0x1 << 8); + phy_write(phydev, MDIO_DEVAD_NONE, 0xe, val); + + /* To enable AR8031 ouput a 125MHz clk from CLK_25M */ + phy_write(phydev, MDIO_DEVAD_NONE, 0xd, 0x7); + phy_write(phydev, MDIO_DEVAD_NONE, 0xe, 0x8016); + phy_write(phydev, MDIO_DEVAD_NONE, 0xd, 0x4007); + + val = phy_read(phydev, MDIO_DEVAD_NONE, 0xe); + val &= 0xffe3; + val |= 0x18; + phy_write(phydev, MDIO_DEVAD_NONE, 0xe, val); + + /* introduce tx clock delay */ + phy_write(phydev, MDIO_DEVAD_NONE, 0x1d, 0x5); + val = phy_read(phydev, MDIO_DEVAD_NONE, 0x1e); + val |= 0x0100; + phy_write(phydev, MDIO_DEVAD_NONE, 0x1e, val); +} + +int board_phy_config(struct phy_device *phydev) +{ + cl_som_imx7_rgmii_rework(phydev); + + if (phydev->drv->config) + phydev->drv->config(phydev); + + return 0; +} + +/* + * cl_som_imx7_handle_mac_address() - set Ethernet MAC address environment. + * + * @env_var: MAC address environment variable + * @eeprom_bus: I2C bus of the environment EEPROM + * + * @return: 0 on success, < 0 on failure + */ +static int cl_som_imx7_handle_mac_address(char *env_var, uint eeprom_bus) +{ + int ret; + unsigned char enetaddr[6]; + + ret = eth_env_get_enetaddr(env_var, enetaddr); + if (ret) + return 0; + + ret = cl_eeprom_read_mac_addr(enetaddr, eeprom_bus); + if (ret) + return ret; + + ret = is_valid_ethaddr(enetaddr); + if (!ret) + return -1; + + return eth_env_set_enetaddr(env_var, enetaddr); +} + +#define CL_SOM_IMX7_FEC_DEV_ID_PRI 0 + +int board_eth_init(bd_t *bis) +{ + /* set Ethernet MAC address environment */ + cl_som_imx7_handle_mac_address("ethaddr", CONFIG_SYS_I2C_EEPROM_BUS); + /* Ethernet interface pinmux configuration */ + cl_som_imx7_phy1_rst_pads_set(); + cl_som_imx7_fec1_pads_set(); + /* PHY reset */ + gpio_request(CL_SOM_IMX7_ETH1_PHY_NRST, "eth1_phy_nrst"); + gpio_direction_output(CL_SOM_IMX7_ETH1_PHY_NRST, 0); + mdelay(10); + gpio_set_value(CL_SOM_IMX7_ETH1_PHY_NRST, 1); + /* MAC initialization */ + return fecmxc_initialize_multi(bis, CL_SOM_IMX7_FEC_DEV_ID_PRI, + CONFIG_FEC_MXC_PHYADDR, IMX_FEC_BASE); +} + +/* + * cl_som_imx7_setup_fec() - Ethernet MAC 1 clock configuration. + * - ENET1 reference clock mode select. + * - ENET1_TX_CLK output driver is disabled when configured for ALT1. + */ +static void cl_som_imx7_setup_fec(void) +{ + struct iomuxc_gpr_base_regs *const iomuxc_gpr_regs + = (struct iomuxc_gpr_base_regs *)IOMUXC_GPR_BASE_ADDR; + + /* Use 125M anatop REF_CLK1 for ENET1, clear gpr1[13], gpr1[17]*/ + clrsetbits_le32(&iomuxc_gpr_regs->gpr[1], + (IOMUXC_GPR_GPR1_GPR_ENET1_TX_CLK_SEL_MASK | + IOMUXC_GPR_GPR1_GPR_ENET1_CLK_DIR_MASK), 0); + + set_clk_enet(ENET_125MHZ); +} +#else /* !CONFIG_FEC_MXC */ +static void cl_som_imx7_setup_fec(void) {} +#endif /* CONFIG_FEC_MXC */ + +#ifdef CONFIG_SPI + +static void cl_som_imx7_spi_init(void) +{ + cl_som_imx7_espi1_pads_set(); +} +#else /* !CONFIG_SPI */ +static void cl_som_imx7_spi_init(void) {} +#endif /* CONFIG_SPI */ + +int board_early_init_f(void) +{ + cl_som_imx7_uart1_pads_set(); + cl_som_imx7_usb_otg1_pads_set(); + + return 0; +} + +int board_init(void) +{ + /* address of boot parameters */ + gd->bd->bi_boot_params = PHYS_SDRAM + 0x100; + cl_som_imx7_setup_i2c(); + cl_som_imx7_setup_fec(); + cl_som_imx7_spi_init(); + + return 0; +} + +#ifdef CONFIG_POWER +#define I2C_PMIC 0 +int power_init_board(void) +{ + struct pmic *p; + int ret; + unsigned int reg, rev_id; + + ret = power_pfuze3000_init(I2C_PMIC); + if (ret) + return ret; + + p = pmic_get("PFUZE3000"); + ret = pmic_probe(p); + if (ret) + return ret; + + pmic_reg_read(p, PFUZE3000_DEVICEID, ®); + pmic_reg_read(p, PFUZE3000_REVID, &rev_id); + printf("PMIC: PFUZE3000 DEV_ID=0x%x REV_ID=0x%x\n", reg, rev_id); + + /* disable Low Power Mode during standby mode */ + pmic_reg_write(p, PFUZE3000_LDOGCTL, 0x1); + + return 0; +} +#endif /* CONFIG_POWER */ + +/* + * cl_som_imx7_setup_wdog() - watchdog configuration. + * - Output WDOG_B signal to reset external pmic. + * - Suspend the watchdog timer during low-power modes. + */ +void cl_som_imx7_setup_wdog(void) +{ + struct wdog_regs *wdog = (struct wdog_regs *)WDOG1_BASE_ADDR; + + cl_som_imx7_wdog_pads_set(); + set_wdog_reset(wdog); + /* + * Do not assert internal WDOG_RESET_B_DEB(controlled by bit 4), + * since we use PMIC_PWRON to reset the board. + */ + clrsetbits_le16(&wdog->wcr, 0, 0x10); +} + +int board_late_init(void) +{ + env_set("board_name", "CL-SOM-iMX7"); + cl_som_imx7_setup_wdog(); + return 0; +} + +int checkboard(void) +{ + char *mode; + + if (IS_ENABLED(CONFIG_ARMV7_BOOT_SEC_DEFAULT)) + mode = "secure"; + else + mode = "non-secure"; + + printf("Board: CL-SOM-iMX7 in %s mode\n", mode); + + return 0; +} |