LXR uboot/drivers/ram/rockchip/sdram

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