123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274 |
- // SPDX-License-Identifier: GPL-2.0+
- /*
- * board.c
- *
- * Board functions for EETS PDU001 board
- *
- * Copyright (C) 2018, EETS GmbH, http://www.eets.ch/
- *
- * Copyright (C) 2011, Texas Instruments, Incorporated - http://www.ti.com/
- */
- #include <common.h>
- #include <env.h>
- #include <errno.h>
- #include <spl.h>
- #include <i2c.h>
- #include <watchdog.h>
- #include <debug_uart.h>
- #include <dm/ofnode.h>
- #include <power/pmic.h>
- #include <power/regulator.h>
- #include <asm/arch/cpu.h>
- #include <asm/arch/hardware.h>
- #include <asm/arch/omap.h>
- #include <asm/arch/ddr_defs.h>
- #include <asm/arch/clock.h>
- #include <asm/arch/gpio.h>
- #include <asm/arch/mmc_host_def.h>
- #include <asm/arch/sys_proto.h>
- #include <asm/arch/mem.h>
- #include <asm/io.h>
- #include <asm/emif.h>
- #include <asm/gpio.h>
- #include "board.h"
- DECLARE_GLOBAL_DATA_PTR;
- #define I2C_ADDR_NODE_ID 0x50
- #define I2C_REG_NODE_ID_BASE 0xfa
- #define NODE_ID_BYTE_COUNT 6
- #define I2C_ADDR_LEDS 0x60
- #define I2C_REG_RUN_LED 0x06
- #define RUN_LED_OFF 0x0
- #define RUN_LED_RED 0x1
- #define RUN_LED_GREEN (0x1 << 2)
- #define VDD_MPU_REGULATOR "regulator@2"
- #define VDD_CORE_REGULATOR "regulator@3"
- #define DEFAULT_CORE_VOLTAGE 1137500
- /*
- * boot device save register
- * -------------------------
- * The boot device can be quired by 'spl_boot_device()' in
- * 'am33xx_spl_board_init'. However it can't be saved in the u-boot
- * environment here. In turn 'spl_boot_device' can't be called in
- * 'board_late_init' which allows writing to u-boot environment.
- * To get the boot device from 'am33xx_spl_board_init' to
- * 'board_late_init' we therefore use a scratch register from the RTC.
- */
- #define CONFIG_SYS_RTC_SCRATCH0 0x60
- #define BOOT_DEVICE_SAVE_REGISTER (RTC_BASE + CONFIG_SYS_RTC_SCRATCH0)
- #ifdef CONFIG_SPL_BUILD
- static void save_boot_device(void)
- {
- *((u32 *)(BOOT_DEVICE_SAVE_REGISTER)) = spl_boot_device();
- }
- #endif
- u32 boot_device(void)
- {
- return *((u32 *)(BOOT_DEVICE_SAVE_REGISTER));
- }
- /* Store the boot device in the environment variable 'boot_device' */
- static void env_set_boot_device(void)
- {
- switch (boot_device()) {
- case BOOT_DEVICE_MMC1: {
- env_set("boot_device", "emmc");
- break;
- }
- case BOOT_DEVICE_MMC2: {
- env_set("boot_device", "sdcard");
- break;
- }
- default: {
- env_set("boot_device", "unknown");
- break;
- }
- }
- }
- static void set_run_led(struct udevice *dev)
- {
- int val = RUN_LED_OFF;
- if (IS_ENABLED(CONFIG_RUN_LED_RED))
- val = RUN_LED_RED;
- else if (IS_ENABLED(CONFIG_RUN_LED_GREEN))
- val = RUN_LED_GREEN;
- dm_i2c_reg_write(dev, I2C_REG_RUN_LED, val);
- }
- /* Set 'serial#' to the EUI-48 value of board node ID chip */
- static void env_set_serial(struct udevice *dev)
- {
- int val;
- char serial[2 * NODE_ID_BYTE_COUNT + 1];
- int n;
- for (n = 0; n < sizeof(serial); n += 2) {
- val = dm_i2c_reg_read(dev, I2C_REG_NODE_ID_BASE + n / 2);
- sprintf(serial + n, "%02X", val);
- }
- serial[2 * NODE_ID_BYTE_COUNT] = '\0';
- env_set("serial#", serial);
- }
- static void set_mpu_and_core_voltage(void)
- {
- int mpu_vdd;
- int sil_rev;
- struct udevice *dev;
- struct ctrl_dev *cdev = (struct ctrl_dev *)CTRL_DEVICE_BASE;
- /*
- * The PDU001 (more precisely the computing module m2) uses a
- * TPS65910 PMIC. For all MPU frequencies we support we use a CORE
- * voltage of 1.1375V. For MPU voltage we need to switch based on
- * the frequency we are running at.
- */
- /*
- * Depending on MPU clock and PG we will need a different VDD
- * to drive at that speed.
- */
- sil_rev = readl(&cdev->deviceid) >> 28;
- mpu_vdd = am335x_get_mpu_vdd(sil_rev, dpll_mpu_opp100.m);
- /* first update the MPU voltage */
- if (!regulator_get_by_devname(VDD_MPU_REGULATOR, &dev)) {
- if (regulator_set_value(dev, mpu_vdd))
- debug("failed to set MPU voltage\n");
- } else {
- debug("invalid MPU voltage ragulator %s\n", VDD_MPU_REGULATOR);
- }
- /* second update the CORE voltage */
- if (!regulator_get_by_devname(VDD_CORE_REGULATOR, &dev)) {
- if (regulator_set_value(dev, DEFAULT_CORE_VOLTAGE))
- debug("failed to set CORE voltage\n");
- } else {
- debug("invalid CORE voltage ragulator %s\n",
- VDD_CORE_REGULATOR);
- }
- }
- #ifndef CONFIG_SKIP_LOWLEVEL_INIT
- static const struct ddr_data ddr2_data = {
- .datardsratio0 = MT47H128M16RT25E_RD_DQS,
- .datafwsratio0 = MT47H128M16RT25E_PHY_FIFO_WE,
- .datawrsratio0 = MT47H128M16RT25E_PHY_WR_DATA,
- };
- static const struct cmd_control ddr2_cmd_ctrl_data = {
- .cmd0csratio = MT47H128M16RT25E_RATIO,
- .cmd1csratio = MT47H128M16RT25E_RATIO,
- .cmd2csratio = MT47H128M16RT25E_RATIO,
- };
- static const struct emif_regs ddr2_emif_reg_data = {
- .sdram_config = MT47H128M16RT25E_EMIF_SDCFG,
- .ref_ctrl = MT47H128M16RT25E_EMIF_SDREF,
- .sdram_tim1 = MT47H128M16RT25E_EMIF_TIM1,
- .sdram_tim2 = MT47H128M16RT25E_EMIF_TIM2,
- .sdram_tim3 = MT47H128M16RT25E_EMIF_TIM3,
- .emif_ddr_phy_ctlr_1 = MT47H128M16RT25E_EMIF_READ_LATENCY,
- };
- #define OSC (V_OSCK / 1000000)
- const struct dpll_params dpll_ddr = {
- 266, OSC - 1, 1, -1, -1, -1, -1};
- const struct dpll_params dpll_ddr_evm_sk = {
- 303, OSC - 1, 1, -1, -1, -1, -1};
- const struct dpll_params dpll_ddr_bone_black = {
- 400, OSC - 1, 1, -1, -1, -1, -1};
- void am33xx_spl_board_init(void)
- {
- struct ctrl_dev *cdev = (struct ctrl_dev *)CTRL_DEVICE_BASE;
- /* Get the frequency */
- dpll_mpu_opp100.m = am335x_get_efuse_mpu_max_freq(cdev);
- /* Set CORE Frequencies to OPP100 */
- do_setup_dpll(&dpll_core_regs, &dpll_core_opp100);
- /* Set MPU Frequency to what we detected now that voltages are set */
- do_setup_dpll(&dpll_mpu_regs, &dpll_mpu_opp100);
- /* save boot device for later use by 'board_late_init' */
- save_boot_device();
- }
- const struct dpll_params *get_dpll_ddr_params(void)
- {
- enable_i2c0_pin_mux();
- return &dpll_ddr;
- }
- void set_mux_conf_regs(void)
- {
- /* done first by the ROM and afterwards by the pin controller driver */
- enable_i2c0_pin_mux();
- }
- const struct ctrl_ioregs ioregs = {
- .cm0ioctl = MT47H128M16RT25E_IOCTRL_VALUE,
- .cm1ioctl = MT47H128M16RT25E_IOCTRL_VALUE,
- .cm2ioctl = MT47H128M16RT25E_IOCTRL_VALUE,
- .dt0ioctl = MT47H128M16RT25E_IOCTRL_VALUE,
- .dt1ioctl = MT47H128M16RT25E_IOCTRL_VALUE,
- };
- void sdram_init(void)
- {
- config_ddr(266, &ioregs, &ddr2_data,
- &ddr2_cmd_ctrl_data, &ddr2_emif_reg_data, 0);
- }
- #endif /* CONFIG_SKIP_LOWLEVEL_INIT */
- #ifdef CONFIG_DEBUG_UART
- void board_debug_uart_init(void)
- {
- /* done by pin controller driver if not debugging */
- enable_uart_pin_mux(CONFIG_DEBUG_UART_BASE);
- }
- #endif
- /*
- * Basic board specific setup. Pinmux has been handled already.
- */
- int board_init(void)
- {
- #ifdef CONFIG_HW_WATCHDOG
- hw_watchdog_init();
- #endif
- gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
- return 0;
- }
- #ifdef CONFIG_BOARD_LATE_INIT
- int board_late_init(void)
- {
- struct udevice *dev;
- set_mpu_and_core_voltage();
- env_set_boot_device();
- /* second I2C bus connects to node ID and front panel LED chip */
- if (!i2c_get_chip_for_busnum(1, I2C_ADDR_LEDS, 1, &dev))
- set_run_led(dev);
- if (!i2c_get_chip_for_busnum(1, I2C_ADDR_NODE_ID, 1, &dev))
- env_set_serial(dev);
- return 0;
- }
- #endif
|