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rockchip: rk3308: Add sdram driver

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A dm based dram driver for rk3308 u-boot
to get capacity.

Signed-off-by: Andy Yan <andy.yan@rock-chips.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
This commit is contained in:
Andy Yan 2019-11-14 11:22:18 +08:00 committed by Kever Yang
parent 9e3de722e4
commit 54069939be
2 changed files with 56 additions and 0 deletions
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1
drivers/ram/rockchip/Makefile
View file

@ -9,6 +9,7 @@ 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
obj-$(CONFIG_ROCKCHIP_RK3308) = sdram_rk3308.o
obj-$(CONFIG_ROCKCHIP_RK3328) = sdram_rk3328.o sdram_pctl_px30.o sdram_phy_px30.o
obj-$(CONFIG_ROCKCHIP_RK3399) += sdram_rk3399.o
obj-$(CONFIG_ROCKCHIP_SDRAM_COMMON) += sdram_common.o

55
drivers/ram/rockchip/sdram_rk3308.c Normal file
View file

@ -0,0 +1,55 @@
// SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
/*
* (C) Copyright 2019 Rockchip Electronics Co., Ltd.
*/
#include <common.h>
#include <dm.h>
#include <ram.h>
#include <syscon.h>
#include <asm/arch/grf_rk3308.h>
#include <asm/arch-rockchip/clock.h>
#include <asm/arch-rockchip/sdram.h>
struct dram_info {
struct ram_info info;
struct rk3308_grf *grf;
};
static int rk3308_dmc_probe(struct udevice *dev)
{
struct dram_info *priv = dev_get_priv(dev);
priv->grf = syscon_get_first_range(ROCKCHIP_SYSCON_GRF);
priv->info.base = CONFIG_SYS_SDRAM_BASE;
priv->info.size = rockchip_sdram_size((phys_addr_t)&priv->grf->os_reg2);
return 0;
}
static int rk3308_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 rk3308_dmc_ops = {
.get_info = rk3308_dmc_get_info,
};
static const struct udevice_id rk3308_dmc_ids[] = {
{ .compatible = "rockchip,rk3308-dmc" },
{ }
};
U_BOOT_DRIVER(dmc_rk3308) = {
.name = "rockchip_rk3308_dmc",
.id = UCLASS_RAM,
.of_match = rk3308_dmc_ids,
.ops = &rk3308_dmc_ops,
.probe = rk3308_dmc_probe,
.priv_auto_alloc_size = sizeof(struct dram_info),
};