1 // SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
2 /*
3  * (C) Copyright 2017 Rockchip Electronics Co., Ltd.
4  */
5 
6 #include <common.h>
7 #include <dm.h>
8 #include <ram.h>
9 #include <syscon.h>
10 #include <asm/arch/clock.h>
11 #include <asm/arch/grf_rk3328.h>
12 #include <asm/arch/sdram_common.h>
13 
14 struct dram_info {
15 	struct ram_info info;
16 	struct rk3328_grf_regs *grf;
17 };
18 
19 static int rk3328_dmc_probe(struct udevice *dev)
20 {
21 	struct dram_info *priv = dev_get_priv(dev);
22 
23 	priv->grf = syscon_get_first_range(ROCKCHIP_SYSCON_GRF);
24 	debug("%s: grf=%p\n", __func__, priv->grf);
25 	priv->info.base = CONFIG_SYS_SDRAM_BASE;
26 	priv->info.size = rockchip_sdram_size(
27 				(phys_addr_t)&priv->grf->os_reg[2]);
28 
29 	return 0;
30 }
31 
32 static int rk3328_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 rk3328_dmc_ops = {
42 	.get_info = rk3328_dmc_get_info,
43 };
44 
45 
46 static const struct udevice_id rk3328_dmc_ids[] = {
47 	{ .compatible = "rockchip,rk3328-dmc" },
48 	{ }
49 };
50 
51 U_BOOT_DRIVER(dmc_rk3328) = {
52 	.name = "rockchip_rk3328_dmc",
53 	.id = UCLASS_RAM,
54 	.of_match = rk3328_dmc_ids,
55 	.ops = &rk3328_dmc_ops,
56 	.probe = rk3328_dmc_probe,
57 	.priv_auto_alloc_size = sizeof(struct dram_info),
58 };
59