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rockchip: rk3568: Add sdram driver

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Add the driver for rk3568 u-boot to get sdram capacity.

Signed-off-by: Joseph Chen <chenjh@rock-chips.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
This commit is contained in:
Joseph Chen 2021-06-02 15:58:24 +08:00 committed by Kever Yang
parent 636ffbd25c
commit 2d46775287
2 changed files with 57 additions and 0 deletions
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1
drivers/ram/rockchip/Makefile
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@ -12,4 +12,5 @@ obj-$(CONFIG_ROCKCHIP_RK3288) = sdram_rk3288.o
obj-$(CONFIG_ROCKCHIP_RK3308) = sdram_rk3308.o obj-$(CONFIG_ROCKCHIP_RK3308) = sdram_rk3308.o
obj-$(CONFIG_ROCKCHIP_RK3328) = sdram_rk3328.o sdram_pctl_px30.o sdram_phy_px30.o obj-$(CONFIG_ROCKCHIP_RK3328) = sdram_rk3328.o sdram_pctl_px30.o sdram_phy_px30.o
obj-$(CONFIG_ROCKCHIP_RK3399) += sdram_rk3399.o obj-$(CONFIG_ROCKCHIP_RK3399) += sdram_rk3399.o
obj-$(CONFIG_ROCKCHIP_RK3568) += sdram_rk3568.o
obj-$(CONFIG_ROCKCHIP_SDRAM_COMMON) += sdram_common.o obj-$(CONFIG_ROCKCHIP_SDRAM_COMMON) += sdram_common.o

56
drivers/ram/rockchip/sdram_rk3568.c Normal file
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@ -0,0 +1,56 @@
// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2021 Rockchip Electronics Co., Ltd.
*/
#include <common.h>
#include <dm.h>
#include <ram.h>
#include <syscon.h>
#include <asm/arch-rockchip/clock.h>
#include <asm/arch-rockchip/grf_rk3568.h>
#include <asm/arch-rockchip/sdram.h>
struct dram_info {
struct ram_info info;
struct rk3568_pmugrf *pmugrf;
};
static int rk3568_dmc_probe(struct udevice *dev)
{
struct dram_info *priv = dev_get_priv(dev);
priv->pmugrf = syscon_get_first_range(ROCKCHIP_SYSCON_PMUGRF);
priv->info.base = CONFIG_SYS_SDRAM_BASE;
priv->info.size =
rockchip_sdram_size((phys_addr_t)&priv->pmugrf->pmu_os_reg2);
return 0;
}
static int rk3568_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 rk3568_dmc_ops = {
.get_info = rk3568_dmc_get_info,
};
static const struct udevice_id rk3568_dmc_ids[] = {
{ .compatible = "rockchip,rk3568-dmc" },
{ }
};
U_BOOT_DRIVER(dmc_rk3568) = {
.name = "rockchip_rk3568_dmc",
.id = UCLASS_RAM,
.of_match = rk3568_dmc_ids,
.ops = &rk3568_dmc_ops,
.probe = rk3568_dmc_probe,
.priv_auto = sizeof(struct dram_info),
};