src/mainboard/starlabs/lite/devtree.c

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 #include <cpu/intel/turbo.h>
   4 #include <device/device.h>
   5 #include <device/pci_def.h>
   6 #include <option.h>
   7 #include <static.h>
   8 #include <types.h>
   9 #include <variants.h>
  10
  11 #include "soc/intel/apollolake/chip.h"
  12
  13 enum cmos_power_profile get_power_profile(enum cmos_power_profile fallback)
  14 {
  15         const unsigned int power_profile = get_uint_option("power_profile", fallback);
  16         return power_profile < NUM_POWER_PROFILES ? power_profile : fallback;
  17 }
  18
  19 void devtree_update(void)
  20 {
  21         config_t *cfg = config_of_soc();
  22
  23         struct soc_power_limits_config *soc_conf =
  24                 &cfg->power_limits_config;
  25
  26         struct device *nic_dev = pcidev_on_root(0x0c, 0);
  27
  28         uint8_t performance_scale = 100;
  29
  30         /* Update PL1 & PL2 based on CMOS settings */
  31         switch (get_power_profile(PP_POWER_SAVER)) {
  32         case PP_POWER_SAVER:
  33                 performance_scale -= 25;
  34                 cfg->tcc_offset                 = 15;
  35                 break;
  36         case PP_BALANCED:
  37                 /* Use the Intel defaults */
  38                 cfg->tcc_offset                 = 10;
  39                 break;
  40         case PP_PERFORMANCE:
  41                 performance_scale += 25;
  42                 cfg->tcc_offset                 = 5;
  43                 break;
  44         }
  45
  46         soc_conf->tdp_pl1_override = (soc_conf->tdp_pl1_override * performance_scale) / 100;
  47         soc_conf->tdp_pl2_override = (soc_conf->tdp_pl2_override * performance_scale) / 100;
  48
  49         /* Set PL4 to 1.0C */
  50         soc_conf->tdp_pl4                       = 31;
  51
  52         /* Enable/Disable Wireless based on CMOS settings */
  53         if (get_uint_option("wireless", 1) == 0)
  54                 nic_dev->enabled = 0;
  55
  56         /* Enable/Disable Webcam based on CMOS settings */
  57         cfg->usb2_port[CONFIG_WEBCAM_USB_PORT].enable = get_uint_option("webcam", 1);
  58 }