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_rk3328.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 rk3328_grf_regs *grf;
19 };
20 
21 static 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 
34 static 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 
43 static struct ram_ops rk3328_dmc_ops = {
44 	.get_info = rk3328_dmc_get_info,
45 };
46 
47 
48 static const struct udevice_id rk3328_dmc_ids[] = {
49 	{ .compatible = "rockchip,rk3328-dmc" },
50 	{ }
51 };
52 
53 U_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 };
61