diff options
Diffstat (limited to 'src/mainboard/siemens/mc_ehl/variants/mc_ehl4/memory.c')
-rw-r--r-- | src/mainboard/siemens/mc_ehl/variants/mc_ehl4/memory.c | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/src/mainboard/siemens/mc_ehl/variants/mc_ehl4/memory.c b/src/mainboard/siemens/mc_ehl/variants/mc_ehl4/memory.c new file mode 100644 index 000000000000..7b7dad1129f8 --- /dev/null +++ b/src/mainboard/siemens/mc_ehl/variants/mc_ehl4/memory.c @@ -0,0 +1,59 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#include <baseboard/variants.h> +#include <gpio.h> +#include <soc/meminit.h> +#include <soc/romstage.h> + +static const struct mb_cfg mc_ehl_lpddr4x_memcfg_cfg = { + + .dq_map[DDR_CH0] = { + {0xf, 0xf0}, + {0xf, 0xf0}, + {0xff, 0x0}, + {0x0, 0x0}, + {0x0, 0x0}, + {0x0, 0x0} + }, + + .dq_map[DDR_CH1] = { + {0xf, 0xf0}, + {0xf, 0xf0}, + {0xff, 0x0}, + {0x0, 0x0}, + {0x0, 0x0}, + {0x0, 0x0} + }, + + /* + * The dqs_map arrays map the ddr4 pins to the SoC pins + * for both channels. + * + * the index = pin number on ddr4 part + * the value = pin number on SoC + */ + .dqs_map[DDR_CH0] = {3, 0, 1, 2, 7, 4, 5, 6}, + .dqs_map[DDR_CH1] = {3, 0, 1, 2, 7, 4, 5, 6}, + + /* Baseboard uses 100, 100 and 100 rcomp resistors */ + .rcomp_resistor = {100, 100, 100}, + + .rcomp_targets = {60, 40, 30, 20, 30}, + + /* LPDDR4x does not allow interleaved memory */ + .dq_pins_interleaved = 0, + + /* Baseboard is using config 2 for vref_ca */ + .vref_ca_config = 2, + + /* Enable Early Command Training */ + .ect = 1, + + /* Set Board Type */ + .UserBd = BOARD_TYPE_MOBILE, +}; + +const struct mb_cfg *variant_memcfg_config(void) +{ + return &mc_ehl_lpddr4x_memcfg_cfg; +} |