mirror of
https://source.denx.de/u-boot/u-boot.git
synced 2025-08-20 14:11:23 +02:00
d26203beb9
Add support for reading DRAM size information from PMUGRF os_reg18 reg. Compared to most Rockchip SoCs the RK3528 use os_reg18 for DRAM info, instead of os_reg2. Signed-off-by: Jonas Karlman <jonas@kwiboo.se> Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
34 lines
747 B
C
34 lines
747 B
C
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
// Copyright Contributors to the U-Boot project.
|
|
|
|
#include <dm.h>
|
|
#include <ram.h>
|
|
#include <asm/arch-rockchip/sdram.h>
|
|
|
|
#define PMUGRF_BASE 0xff370000
|
|
#define OS_REG18_REG 0x248
|
|
|
|
static int rk3528_dmc_get_info(struct udevice *dev, struct ram_info *info)
|
|
{
|
|
info->base = CFG_SYS_SDRAM_BASE;
|
|
info->size = rockchip_sdram_size(PMUGRF_BASE + OS_REG18_REG);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct ram_ops rk3528_dmc_ops = {
|
|
.get_info = rk3528_dmc_get_info,
|
|
};
|
|
|
|
static const struct udevice_id rk3528_dmc_ids[] = {
|
|
{ .compatible = "rockchip,rk3528-dmc" },
|
|
{ }
|
|
};
|
|
|
|
U_BOOT_DRIVER(rockchip_rk3528_dmc) = {
|
|
.name = "rockchip_rk3528_dmc",
|
|
.id = UCLASS_RAM,
|
|
.of_match = rk3528_dmc_ids,
|
|
.ops = &rk3528_dmc_ops,
|
|
};
|