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https://github.com/AsahiLinux/u-boot
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2d46775287
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>
56 lines
1.2 KiB
C
56 lines
1.2 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2021 Rockchip Electronics Co., Ltd.
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*/
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#include <common.h>
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#include <dm.h>
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#include <ram.h>
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#include <syscon.h>
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#include <asm/arch-rockchip/clock.h>
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#include <asm/arch-rockchip/grf_rk3568.h>
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#include <asm/arch-rockchip/sdram.h>
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struct dram_info {
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struct ram_info info;
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struct rk3568_pmugrf *pmugrf;
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};
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static int rk3568_dmc_probe(struct udevice *dev)
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{
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struct dram_info *priv = dev_get_priv(dev);
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priv->pmugrf = syscon_get_first_range(ROCKCHIP_SYSCON_PMUGRF);
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priv->info.base = CONFIG_SYS_SDRAM_BASE;
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priv->info.size =
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rockchip_sdram_size((phys_addr_t)&priv->pmugrf->pmu_os_reg2);
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return 0;
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}
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static int rk3568_dmc_get_info(struct udevice *dev, struct ram_info *info)
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{
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struct dram_info *priv = dev_get_priv(dev);
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*info = priv->info;
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return 0;
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}
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static struct ram_ops rk3568_dmc_ops = {
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.get_info = rk3568_dmc_get_info,
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};
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static const struct udevice_id rk3568_dmc_ids[] = {
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{ .compatible = "rockchip,rk3568-dmc" },
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{ }
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};
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U_BOOT_DRIVER(dmc_rk3568) = {
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.name = "rockchip_rk3568_dmc",
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.id = UCLASS_RAM,
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.of_match = rk3568_dmc_ids,
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.ops = &rk3568_dmc_ops,
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.probe = rk3568_dmc_probe,
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.priv_auto = sizeof(struct dram_info),
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};
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