mirrors/u-boot
0
0
Fork 0
mirror of https://github.com/u-boot/u-boot.git synced 2024-11-28 15:13:31 +08:00
Code Issues Packages Projects Releases Wiki Activity

rockchip: rk3128: add sdram driver

Browse Source 
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>
This commit is contained in:
Kever Yang 2017-11-28 16:04:21 +08:00 committed by Philipp Tomsich
parent ed7e64e5e8
commit b7aef28953
2 changed files with 60 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/ram/rockchip/Makefile
View File

@ -5,6 +5,7 @@
#
obj-$(CONFIG_ROCKCHIP_RK3368) = dmc-rk3368.o
obj-$(CONFIG_ROCKCHIP_RK3128) = sdram_rk3128.o
obj-$(CONFIG_ROCKCHIP_RK3188) = sdram_rk3188.o
obj-$(CONFIG_ROCKCHIP_RK322X) = sdram_rk322x.o
obj-$(CONFIG_ROCKCHIP_RK3288) = sdram_rk3288.o

59
drivers/ram/rockchip/sdram_rk3128.c Normal file
View File

@ -0,0 +1,59 @@
/*
* (C) Copyright 2017 Rockchip Electronics Co., Ltd.
*
* SPDX-License-Identifier: GPL-2.0
*/
#include <common.h>
#include <dm.h>
#include <ram.h>
#include <syscon.h>
#include <asm/arch/clock.h>
#include <asm/arch/grf_rk3128.h>
#include <asm/arch/sdram_common.h>
DECLARE_GLOBAL_DATA_PTR;
struct dram_info {
struct ram_info info;
struct rk3128_grf *grf;
};
static int rk3128_dmc_probe(struct udevice *dev)
{
struct dram_info *priv = dev_get_priv(dev);
priv->grf = syscon_get_first_range(ROCKCHIP_SYSCON_GRF);
debug("%s: grf=%p\n", __func__, priv->grf);
priv->info.base = CONFIG_SYS_SDRAM_BASE;
priv->info.size = rockchip_sdram_size(
(phys_addr_t)&priv->grf->os_reg[1]);
return 0;
}
static int rk3128_dmc_get_info(struct udevice *dev, struct ram_info *info)
{
struct dram_info *priv = dev_get_priv(dev);
*info = priv->info;
return 0;
}
static struct ram_ops rk3128_dmc_ops = {
.get_info = rk3128_dmc_get_info,
};
static const struct udevice_id rk3128_dmc_ids[] = {
{ .compatible = "rockchip,rk3128-dmc" },
{ }
};
U_BOOT_DRIVER(dmc_rk3128) = {
.name = "rockchip_rk3128_dmc",
.id = UCLASS_RAM,
.of_match = rk3128_dmc_ids,
.ops = &rk3128_dmc_ops,
.probe = rk3128_dmc_probe,
.priv_auto_alloc_size = sizeof(struct dram_info),
};