| Kever Yang | 7a0ab30 | 2017-06-23 16:11:08 +0800 | [diff] [blame] | 1 | /* |
| 2 | * (C) Copyright 2016 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_rk3368.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 rk3368_pmu_grf *pmugrf; |
| 19 | }; |
| 20 | |
| 21 | static int rk3368_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: grf=%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 rk3368_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 rk3368_dmc_ops = { |
| 44 | .get_info = rk3368_dmc_get_info, |
| 45 | }; |
| 46 | |
| 47 | |
| 48 | static const struct udevice_id rk3368_dmc_ids[] = { |
| 49 | { .compatible = "rockchip,rk3368-dmc" }, |
| 50 | { } |
| 51 | }; |
| 52 | |
| 53 | U_BOOT_DRIVER(dmc_rk3368) = { |
| 54 | .name = "rockchip_rk3368_dmc", |
| 55 | .id = UCLASS_RAM, |
| 56 | .of_match = rk3368_dmc_ids, |
| 57 | .ops = &rk3368_dmc_ops, |
| 58 | .probe = rk3368_dmc_probe, |
| 59 | .priv_auto_alloc_size = sizeof(struct dram_info), |
| 60 | }; |