src/mainboard/google/veyron_rialto/mainboard.c

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 #include <device/mmio.h>
   4 #include <boot/coreboot_tables.h>
   5 #include <console/console.h>
   6 #include <device/device.h>
   7 #include <device/i2c_simple.h>
   8 #include <gpio.h>
   9 #include <soc/display.h>
  10 #include <soc/grf.h>
  11 #include <soc/soc.h>
  12 #include <soc/pmu.h>
  13 #include <soc/clock.h>
  14 #include <soc/rk808.h>
  15 #include <soc/spi.h>
  16 #include <soc/i2c.h>
  17 #include <symbols.h>
  18 #include <security/vboot/vboot_common.h>
  19
  20 #include "board.h"
  21
  22 static void configure_usb(void)
  23 {
  24         gpio_output(GPIO(0, B, 4), 1);                  /* USB2_PWR_EN */
  25 }
  26
  27 static void configure_emmc(void)
  28 {
  29         write32(&rk3288_grf->iomux_emmcdata, IOMUX_EMMCDATA);
  30         write32(&rk3288_grf->iomux_emmcpwren, IOMUX_EMMCPWREN);
  31         write32(&rk3288_grf->iomux_emmccmd, IOMUX_EMMCCMD);
  32
  33         gpio_output(GPIO(2, B, 1), 1);          /* EMMC_RST_L */
  34 }
  35
  36 static void configure_codec(void)
  37 {
  38         write32(&rk3288_grf->iomux_i2c2, IOMUX_I2C2);   /* CODEC I2C */
  39         i2c_init(2, 400*KHz);                           /* CODEC I2C */
  40
  41         write32(&rk3288_grf->iomux_i2s, IOMUX_I2S);
  42         write32(&rk3288_grf->iomux_i2sclk, IOMUX_I2SCLK);
  43
  44         rk808_configure_ldo(6, 1800);   /* VCC18_CODEC */
  45
  46         /* AUDIO IO domain 1.8V voltage selection */
  47         write32(&rk3288_grf->io_vsel, RK_SETBITS(1 << 6));
  48         rkclk_configure_i2s(12288000);
  49 }
  50
  51 static void configure_3g(void)
  52 {
  53         /* Force 3G modem off to avoid confusing the EHCI host and
  54          * causing problems during enumeration/init */
  55         gpio_output(GPIO(5, C, 1), 1);  /* 3G_SHUTDOWN */
  56         gpio_output(GPIO(4, D, 2), 0);  /* 3G_ON_OFF */
  57 }
  58
  59 static void mainboard_init(struct device *dev)
  60 {
  61         gpio_output(GPIO_RESET, 0);
  62
  63         configure_usb();
  64         configure_emmc();
  65         configure_codec();
  66         configure_3g();
  67         /* No video. */
  68
  69         /* If recovery mode is detected, reduce frequency and voltage to reduce
  70          * heat in case machine is left unattended. chrome-os-partner:41201. */
  71         if (vboot_recovery_mode_enabled())  {
  72                 printk(BIOS_DEBUG, "Reducing APLL freq for recovery mode.\n");
  73                 rkclk_configure_cpu(APLL_600_MHZ);
  74                 rk808_configure_buck(1, 900);
  75         }
  76 }
  77
  78 static void mainboard_enable(struct device *dev)
  79 {
  80         dev->ops->init = &mainboard_init;
  81 }
  82
  83 struct chip_operations mainboard_ops = {
  84         .enable_dev = mainboard_enable,
  85 };
  86
  87 void lb_board(struct lb_header *header)
  88 {
  89         struct lb_range *dma;
  90
  91         dma = (struct lb_range *)lb_new_record(header);
  92         dma->tag = LB_TAG_DMA;
  93         dma->size = sizeof(*dma);
  94         dma->range_start = (uintptr_t)_dma_coherent;
  95         dma->range_size = REGION_SIZE(dma_coherent);
  96 }
  97
  98 void mainboard_power_on_backlight(void)
  99 {
 100 }