blob: 24b68b640bbd1fd0cdc9b7bdcdfbf6a8c334665c [file] [log] [blame]
Wenyou Yanga3b59b12015-11-02 10:57:09 +08001/*
2 * Copyright (C) 2015 Atmel Corporation
3 * Wenyou.Yang <wenyou.yang@atmel.com>
4 *
5 * SPDX-License-Identifier: GPL-2.0+
6 */
7
8#include <common.h>
9#include <malloc.h>
10#include <sdhci.h>
11#include <asm/arch/clk.h>
12
13#define ATMEL_SDHC_MIN_FREQ 400000
14
15int atmel_sdhci_init(void *regbase, u32 id)
16{
17 struct sdhci_host *host;
18 u32 max_clk, min_clk = ATMEL_SDHC_MIN_FREQ;
19
20 host = (struct sdhci_host *)calloc(1, sizeof(struct sdhci_host));
21 if (!host) {
22 printf("%s: sdhci_host calloc failed\n", __func__);
23 return -ENOMEM;
24 }
25
26 host->name = "atmel_sdhci";
27 host->ioaddr = regbase;
28 host->quirks = 0;
29 host->version = sdhci_readw(host, SDHCI_HOST_VERSION);
30 max_clk = at91_get_periph_generated_clk(id);
31 if (!max_clk) {
32 printf("%s: Failed to get the proper clock\n", __func__);
33 free(host);
34 return -ENODEV;
35 }
36
37 add_sdhci(host, max_clk, min_clk);
38
39 return 0;
40}