1 /* 2 * (C) Copyright 2017 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_px30.h> 13 #include <asm/arch/sdram_common.h> 14 15 DECLARE_GLOBAL_DATA_PTR; 16 struct dram_info { 17 struct ram_info info; 18 struct px30_pmugrf *pmugrf; 19 }; 20 21 static int px30_dmc_probe(struct udevice *dev) 22 { 23 struct dram_info *priv = dev_get_priv(dev); 24 25 priv->pmugrf = syscon_get_first_range(ROCKCHIP_SYSCON_PMUGRF); 26 debug("%s: pmugrf=%p\n", __func__, priv->pmugrf); 27 priv->info.base = CONFIG_SYS_SDRAM_BASE; 28 priv->info.size = rockchip_sdram_size( 29 (phys_addr_t)&priv->pmugrf->os_reg[2]); 30 31 return 0; 32 } 33 34 static int px30_dmc_get_info(struct udevice *dev, struct ram_info *info) 35 { 36 struct dram_info *priv = dev_get_priv(dev); 37 38 *info = priv->info; 39 40 return 0; 41 } 42 43 static struct ram_ops px30_dmc_ops = { 44 .get_info = px30_dmc_get_info, 45 }; 46 47 48 static const struct udevice_id px30_dmc_ids[] = { 49 { .compatible = "rockchip,px30-dmc" }, 50 { } 51 }; 52 53 U_BOOT_DRIVER(dmc_px30) = { 54 .name = "rockchip_px30_dmc", 55 .id = UCLASS_RAM, 56 .of_match = px30_dmc_ids, 57 .ops = &px30_dmc_ops, 58 .probe = px30_dmc_probe, 59 .priv_auto_alloc_size = sizeof(struct dram_info), 60 }; 61