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_rk3128.h>
13 #include <asm/arch/sdram.h>
14
15 DECLARE_GLOBAL_DATA_PTR;
16 struct dram_info {
17 struct ram_info info;
18 struct rk3128_grf *grf;
19 };
20
rk3128_dmc_probe(struct udevice * dev)21 static int rk3128_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[1]);
30
31 return 0;
32 }
33
rk3128_dmc_get_info(struct udevice * dev,struct ram_info * info)34 static int rk3128_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 rk3128_dmc_ops = {
44 .get_info = rk3128_dmc_get_info,
45 };
46
47
48 static const struct udevice_id rk3128_dmc_ids[] = {
49 { .compatible = "rockchip,rk3128-dmc" },
50 { }
51 };
52
53 U_BOOT_DRIVER(dmc_rk3128) = {
54 .name = "rockchip_rk3128_dmc",
55 .id = UCLASS_RAM,
56 .of_match = rk3128_dmc_ids,
57 .ops = &rk3128_dmc_ops,
58 .probe = rk3128_dmc_probe,
59 .priv_auto_alloc_size = sizeof(struct dram_info),
60 };
61