hi6220_dw_mmc.c
1.32 KB
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/*
* (C) Copyright 2015 Linaro
* peter.griffin <peter.griffin@linaro.org>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <dwmmc.h>
#include <malloc.h>
#include <linux/errno.h>
#define DWMMC_MAX_CH_NUM 4
#define DWMMC_MAX_FREQ 50000000
#define DWMMC_MIN_FREQ 400000
/* Source clock is configured to 100MHz by ATF bl1*/
#define MMC0_DEFAULT_FREQ 100000000
static int hi6220_dwmci_core_init(struct dwmci_host *host, int index)
{
host->name = "Hisilicon DWMMC";
host->dev_index = index;
/* Add the mmc channel to be registered with mmc core */
if (add_dwmci(host, DWMMC_MAX_FREQ, DWMMC_MIN_FREQ)) {
printf("DWMMC%d registration failed\n", index);
return -1;
}
return 0;
}
/*
* This function adds the mmc channel to be registered with mmc core.
* index - mmc channel number.
* regbase - register base address of mmc channel specified in 'index'.
* bus_width - operating bus width of mmc channel specified in 'index'.
*/
int hi6220_dwmci_add_port(int index, u32 regbase, int bus_width)
{
struct dwmci_host *host = NULL;
host = calloc(1, sizeof(struct dwmci_host));
if (!host) {
pr_err("dwmci_host calloc failed!\n");
return -ENOMEM;
}
host->ioaddr = (void *)(ulong)regbase;
host->buswidth = bus_width;
host->bus_hz = MMC0_DEFAULT_FREQ;
return hi6220_dwmci_core_init(host, index);
}