src/mainboard/google/brya/variants/kinox/memory.c

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2
   3 #include <baseboard/gpio.h>
   4 #include <baseboard/variants.h>
   5 #include <boardid.h>
   6 #include <gpio.h>
   7 #include <soc/romstage.h>
   8
   9 static const struct mb_cfg ddr4_mem_config = {
  10         .type = MEM_TYPE_DDR4,
  11
  12         .rcomp = {
  13                 /* Baseboard uses only 100ohm Rcomp resistors */
  14                 .resistor = 100,
  15
  16                 /* Baseboard Rcomp target values */
  17                 .targets = {50, 20, 25, 25, 25},
  18         },
  19
  20         .LpDdrDqDqsReTraining = 1,
  21
  22         .ect = 1, /* Early Command Training */
  23
  24         .UserBd = BOARD_TYPE_MOBILE,
  25
  26         .ddr_config = {
  27                 .dq_pins_interleaved = false,
  28         },
  29 };
  30
  31 const struct mb_cfg *variant_memory_params(void)
  32 {
  33         return &ddr4_mem_config;
  34 }
  35
  36 void variant_get_spd_info(struct mem_spd *spd_info)
  37 {
  38         const uint32_t id = board_id();
  39         spd_info->topo = MEM_TOPO_DIMM_MODULE;
  40
  41         if (id >= 2) {
  42                 spd_info->smbus[0].addr_dimm[0] = 0x50;
  43                 spd_info->smbus[1].addr_dimm[0] = 0x52;
  44         } else {
  45                 spd_info->smbus[0].addr_dimm[0] = 0x52;
  46                 spd_info->smbus[1].addr_dimm[0] = 0x50;
  47         }
  48 }