1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * Copyright (c) 2011 The Chromium OS Authors. 4 */ 5 6 #include <common.h> 7 #include "emc.h" 8 #include <asm/io.h> 9 #include <asm/arch/clock.h> 10 #include <asm/arch/emc.h> 11 #include <asm/arch/pmu.h> 12 #include <asm/arch/tegra.h> 13 #include <asm/arch-tegra/ap.h> 14 #include <asm/arch-tegra/clk_rst.h> 15 #include <asm/arch-tegra/sys_proto.h> 16 17 DECLARE_GLOBAL_DATA_PTR; 18 19 /* These rates are hard-coded for now, until fdt provides them */ 20 #define EMC_SDRAM_RATE_T20 (333000 * 2 * 1000) 21 #define EMC_SDRAM_RATE_T25 (380000 * 2 * 1000) 22 board_emc_init(void)23int board_emc_init(void) 24 { 25 unsigned rate; 26 27 switch (tegra_get_chip_sku()) { 28 default: 29 case TEGRA_SOC_T20: 30 rate = EMC_SDRAM_RATE_T20; 31 break; 32 case TEGRA_SOC_T25: 33 rate = EMC_SDRAM_RATE_T25; 34 break; 35 } 36 return tegra_set_emc(gd->fdt_blob, rate); 37 } 38