1 /* 2 * (C) Copyright 2018 Rockchip Electronics Co., Ltd. 3 * 4 * SPDX-License-Identifier: GPL-2.0 5 */ 6 7 #include <common.h> 8 #include <dm.h> 9 #include <ram.h> 10 #include <syscon.h> 11 #include <asm/arch/clock.h> 12 #include <asm/arch/grf_rk3308.h> 13 #include <asm/arch/sdram_common.h> 14 15 DECLARE_GLOBAL_DATA_PTR; 16 17 struct dram_info { 18 struct ram_info info; 19 }; 20 21 static int rk3308_dmc_probe(struct udevice *dev) 22 { 23 struct dram_info *priv = dev_get_priv(dev); 24 struct rk3308_grf *grf = syscon_get_first_range(ROCKCHIP_SYSCON_GRF); 25 26 priv->info.base = CONFIG_SYS_SDRAM_BASE; 27 priv->info.size = rockchip_sdram_size((phys_addr_t)&grf->os_reg2); 28 29 return 0; 30 } 31 32 static int rk3308_dmc_get_info(struct udevice *dev, struct ram_info *info) 33 { 34 struct dram_info *priv = dev_get_priv(dev); 35 36 *info = priv->info; 37 38 return 0; 39 } 40 41 static struct ram_ops rk3308_dmc_ops = { 42 .get_info = rk3308_dmc_get_info, 43 }; 44 45 46 static const struct udevice_id rk3308_dmc_ids[] = { 47 { .compatible = "rockchip,rk3308-dmc" }, 48 { } 49 }; 50 51 U_BOOT_DRIVER(dmc_rk3308) = { 52 .name = "rockchip_rk3308_dmc", 53 .id = UCLASS_RAM, 54 .of_match = rk3308_dmc_ids, 55 .ops = &rk3308_dmc_ops, 56 .probe = rk3308_dmc_probe, 57 .priv_auto_alloc_size = sizeof(struct dram_info), 58 }; 59