1 // SPDX-License-Identifier: GPL-2.0+
3 * (C) Copyright 2015 Linaro
10 #include <linux/errno.h>
12 #define DWMMC_MAX_CH_NUM 4
14 #define DWMMC_MAX_FREQ 50000000
15 #define DWMMC_MIN_FREQ 400000
17 /* Source clock is configured to 100MHz by ATF bl1*/
18 #define MMC0_DEFAULT_FREQ 100000000
20 static int hi6220_dwmci_core_init(struct dwmci_host *host, int index)
22 host->name = "Hisilicon DWMMC";
24 host->dev_index = index;
26 /* Add the mmc channel to be registered with mmc core */
27 if (add_dwmci(host, DWMMC_MAX_FREQ, DWMMC_MIN_FREQ)) {
28 printf("DWMMC%d registration failed\n", index);
35 * This function adds the mmc channel to be registered with mmc core.
36 * index - mmc channel number.
37 * regbase - register base address of mmc channel specified in 'index'.
38 * bus_width - operating bus width of mmc channel specified in 'index'.
40 int hi6220_dwmci_add_port(int index, u32 regbase, int bus_width)
42 struct dwmci_host *host = NULL;
44 host = calloc(1, sizeof(struct dwmci_host));
46 pr_err("dwmci_host calloc failed!\n");
50 host->ioaddr = (void *)(ulong)regbase;
51 host->buswidth = bus_width;
52 host->bus_hz = MMC0_DEFAULT_FREQ;
54 return hi6220_dwmci_core_init(host, index);