src/mainboard/google/veyron_mickey/bootblock.c

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 #include <device/mmio.h>
   4 #include <assert.h>
   5 #include <bootblock_common.h>
   6 #include <delay.h>
   7 #include <soc/clock.h>
   8 #include <soc/i2c.h>
   9 #include <soc/grf.h>
  10 #include <soc/pmu.h>
  11 #include <soc/rk808.h>
  12 #include <soc/spi.h>
  13 #include <vendorcode/google/chromeos/chromeos.h>
  14
  15 #include "board.h"
  16
  17 void bootblock_mainboard_early_init(void)
  18 {
  19         if (CONFIG(CONSOLE_SERIAL)) {
  20                 assert(CONFIG_CONSOLE_SERIAL_UART_ADDRESS == UART2_BASE);
  21                 write32(&rk3288_grf->iomux_uart2, IOMUX_UART2);
  22         }
  23 }
  24
  25 void bootblock_mainboard_init(void)
  26 {
  27         if (rkclk_was_watchdog_reset())
  28                 reboot_from_watchdog();
  29
  30         gpio_output(GPIO(7, A, 0), 1);  /* Power LED */
  31
  32         /* Up VDD_CPU (BUCK1) to 1.4V to support max CPU frequency (1.8GHz). */
  33         setbits32(&rk3288_pmu->iomux_i2c0scl, IOMUX_I2C0SCL);
  34         setbits32(&rk3288_pmu->iomux_i2c0sda, IOMUX_I2C0SDA);
  35         assert(CONFIG_PMIC_BUS == 0);   /* must correspond with IOMUX */
  36         i2c_init(CONFIG_PMIC_BUS, 400*KHz);
  37
  38         /* Slowly raise to max CPU voltage to prevent overshoot */
  39         rk808_configure_buck(1, 1200);
  40         udelay(175);/* Must wait for voltage to stabilize,2mV/us */
  41         rk808_configure_buck(1, 1400);
  42         udelay(100);/* Must wait for voltage to stabilize,2mV/us */
  43         rkclk_configure_cpu(APLL_1800_MHZ);
  44
  45         /* i2c1 for tpm */
  46         write32(&rk3288_grf->iomux_i2c1, IOMUX_I2C1);
  47         i2c_init(1, 400*KHz);
  48
  49         /* spi2 for firmware ROM */
  50         write32(&rk3288_grf->iomux_spi2csclk, IOMUX_SPI2_CSCLK);
  51         write32(&rk3288_grf->iomux_spi2txrx, IOMUX_SPI2_TXRX);
  52         rockchip_spi_init(CONFIG_BOOT_DEVICE_SPI_FLASH_BUS, 24750*KHz);
  53
  54         setup_chromeos_gpios();
  55 }