blob: 9637a35e2314fa664abeeb4fc9688cf1a232a0af [file] [log] [blame]
Kever Yang13856742017-06-23 16:11:07 +08001/*
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_rk3328.h>
13#include <asm/arch/sdram_common.h>
14
15DECLARE_GLOBAL_DATA_PTR;
16struct dram_info {
17 struct ram_info info;
18 struct rk3328_grf_regs *grf;
19};
20
21static int rk3328_dmc_probe(struct udevice *dev)
22{
23 struct dram_info *priv = dev_get_priv(dev);
24
25 priv->grf = syscon_get_first_range(ROCKCHIP_SYSCON_GRF);
26 debug("%s: grf=%p\n", __func__, priv->grf);
27 priv->info.base = CONFIG_SYS_SDRAM_BASE;
28 priv->info.size = rockchip_sdram_size(
29 (phys_addr_t)&priv->grf->os_reg[2]);
30
31 return 0;
32}
33
34static int rk3328_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
43static struct ram_ops rk3328_dmc_ops = {
44 .get_info = rk3328_dmc_get_info,
45};
46
47
48static const struct udevice_id rk3328_dmc_ids[] = {
49 { .compatible = "rockchip,rk3328-dmc" },
50 { }
51};
52
53U_BOOT_DRIVER(dmc_rk3328) = {
54 .name = "rockchip_rk3328_dmc",
55 .id = UCLASS_RAM,
56 .of_match = rk3328_dmc_ids,
57 .ops = &rk3328_dmc_ops,
58 .probe = rk3328_dmc_probe,
59 .priv_auto_alloc_size = sizeof(struct dram_info),
60};