Commit b7aef28953384f467521d9c981c6a8b1d5dc1ea9
Committed by
Philipp Tomsich
1 parent
ed7e64e5e8
Exists in
smarc_8mq_lf_v2020.04
and in
17 other branches
rockchip: rk3128: add sdram driver
RK3128 support up to 2GB DDR3 sdram, one channel, 32bit data width. This patch is only used for U-Boot, but not for SPL which will comes later, maybe after we merge all the common code into a common file. Signed-off-by: Kever Yang <kever.yang@rock-chips.com> Acked-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com> Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Showing 2 changed files with 60 additions and 0 deletions Side-by-side Diff
drivers/ram/rockchip/Makefile
drivers/ram/rockchip/sdram_rk3128.c
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_common.h> | |
14 | + | |
15 | +DECLARE_GLOBAL_DATA_PTR; | |
16 | +struct dram_info { | |
17 | + struct ram_info info; | |
18 | + struct rk3128_grf *grf; | |
19 | +}; | |
20 | + | |
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 | + | |
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 | +static const struct udevice_id rk3128_dmc_ids[] = { | |
48 | + { .compatible = "rockchip,rk3128-dmc" }, | |
49 | + { } | |
50 | +}; | |
51 | + | |
52 | +U_BOOT_DRIVER(dmc_rk3128) = { | |
53 | + .name = "rockchip_rk3128_dmc", | |
54 | + .id = UCLASS_RAM, | |
55 | + .of_match = rk3128_dmc_ids, | |
56 | + .ops = &rk3128_dmc_ops, | |
57 | + .probe = rk3128_dmc_probe, | |
58 | + .priv_auto_alloc_size = sizeof(struct dram_info), | |
59 | +}; |