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a3b59b15 WY |
1 | /* |
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 | ||
15 | int 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 | } |