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 } 41