LXR uboot/drivers/ram/rockchip/sdram

   1// SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
   2/*
   3 * (C) Copyright 2017 Rockchip Electronics Co., Ltd.
   4 */
   5
   6#include <common.h>
   7#include <dm.h>
   8#include <log.h>
   9#include <ram.h>
  10#include <syscon.h>
  11#include <asm/arch-rockchip/clock.h>
  12#include <asm/arch-rockchip/grf_rk3128.h>
  13#include <asm/arch-rockchip/sdram.h>
  14
  15struct dram_info {
  16        struct ram_info info;
  17        struct rk3128_grf *grf;
  18};
  19
  20static int rk3128_dmc_probe(struct udevice *dev)
  21{
  22        struct dram_info *priv = dev_get_priv(dev);
  23
  24        priv->grf = syscon_get_first_range(ROCKCHIP_SYSCON_GRF);
  25        debug("%s: grf=%p\n", __func__, priv->grf);
  26        priv->info.base = CONFIG_SYS_SDRAM_BASE;
  27        priv->info.size = rockchip_sdram_size(
  28                                (phys_addr_t)&priv->grf->os_reg[1]);
  29
  30        return 0;
  31}
  32
  33static int rk3128_dmc_get_info(struct udevice *dev, struct ram_info *info)
  34{
  35        struct dram_info *priv = dev_get_priv(dev);
  36
  37        *info = priv->info;
  38
  39        return 0;
  40}
  41
  42static struct ram_ops rk3128_dmc_ops = {
  43        .get_info = rk3128_dmc_get_info,
  44};
  45
  46static const struct udevice_id rk3128_dmc_ids[] = {
  47        { .compatible = "rockchip,rk3128-dmc" },
  48        { }
  49};
  50
  51U_BOOT_DRIVER(dmc_rk3128) = {
  52        .name = "rockchip_rk3128_dmc",
  53        .id = UCLASS_RAM,
  54        .of_match = rk3128_dmc_ids,
  55        .ops = &rk3128_dmc_ops,
  56        .probe = rk3128_dmc_probe,
  57        .priv_auto      = sizeof(struct dram_info),
  58};
  59