/* SPDX-License-Identifier: GPL-2.0-only */ #include <boardid.h> #include <cbfs.h> #include <console/console.h> #include <gpio.h> #include <soc/sdram.h> #include <stdio.h> #include <types.h> static const char *sdram_configs[] = { /* Samsung K4E6E304EB-EGCE */ [0] = "sdram-lpddr3-generic-4GB", /* Hynix H9CCNNNBJTALAR */ [1] = "sdram-lpddr3-generic-4GB", /* Samsung K4E8E324EB-EGCF */ [3] = "sdram-lpddr3-generic-2GB", /* Micron MT52L256M32D1PF */ [4] = "sdram-lpddr3-generic-2GB", /* Samsung K4E6E304EB-EGCE, duplicate to 0 */ [5] = "sdram-lpddr3-generic-4GB", /* Micron MT52L512M32D2PF */ [6] = "sdram-lpddr3-generic-4GB", }; static struct rk3399_sdram_params params; enum dram_speeds { dram_800MHz = 800, dram_928MHz = 928, }; static enum dram_speeds get_sdram_target_mhz(void) { if (CONFIG(BOARD_GOOGLE_BOB) && board_id() < 4) return dram_800MHz; return dram_928MHz; } const struct rk3399_sdram_params *get_sdram_config(void) { char config_file[64]; uint32_t ramcode; ramcode = ram_code(); if (ramcode >= ARRAY_SIZE(sdram_configs) || !snprintf(config_file, sizeof(config_file), "%s-%d", sdram_configs[ramcode], get_sdram_target_mhz()) || (cbfs_load(config_file, ¶ms, sizeof(params)) != sizeof(params))) die("Cannot load SDRAM parameter file!"); return ¶ms; }