blob: abe74293edfdb609dde6fa0d308ff81e17b798bf [file] [log] [blame]
Andrei Pistirica102142c2016-01-28 15:30:18 +05301/*
2 * Support of SDHCI for Microchip PIC32 SoC.
3 *
4 * Copyright (C) 2015 Microchip Technology Inc.
5 * Andrei Pistirica <andrei.pistirica@microchip.com>
6 *
7 * SPDX-License-Identifier: GPL-2.0+
8 */
9
10#include <dm.h>
11#include <common.h>
12#include <sdhci.h>
13#include <asm/errno.h>
14#include <mach/pic32.h>
15
16DECLARE_GLOBAL_DATA_PTR;
17
18static int pic32_sdhci_probe(struct udevice *dev)
19{
20 struct sdhci_host *host = dev_get_priv(dev);
21 const void *fdt = gd->fdt_blob;
22 u32 f_min_max[2];
23 fdt_addr_t addr;
24 fdt_size_t size;
25 int ret;
26
27 addr = fdtdec_get_addr_size(fdt, dev->of_offset, "reg", &size);
28 if (addr == FDT_ADDR_T_NONE)
29 return -EINVAL;
30
31 host->ioaddr = ioremap(addr, size);
Masahiro Yamadacacd1d22016-04-22 20:59:31 +090032 host->name = dev->name;
Andrei Pistirica102142c2016-01-28 15:30:18 +053033 host->quirks = SDHCI_QUIRK_NO_HISPD_BIT | SDHCI_QUIRK_NO_CD;
34 host->bus_width = fdtdec_get_int(gd->fdt_blob, dev->of_offset,
35 "bus-width", 4);
36
37 ret = fdtdec_get_int_array(gd->fdt_blob, dev->of_offset,
38 "clock-freq-min-max", f_min_max, 2);
39 if (ret) {
40 printf("sdhci: clock-freq-min-max not found\n");
41 return ret;
42 }
43
Simon Glasscffe5d82016-05-01 13:52:34 -060044 ret = add_sdhci(host, f_min_max[1], f_min_max[0]);
45 if (ret)
46 return ret;
47 host->mmc->dev = dev;
48
49 return 0;
Andrei Pistirica102142c2016-01-28 15:30:18 +053050}
51
52static const struct udevice_id pic32_sdhci_ids[] = {
53 { .compatible = "microchip,pic32mzda-sdhci" },
54 { }
55};
56
57U_BOOT_DRIVER(pic32_sdhci_drv) = {
58 .name = "pic32_sdhci",
59 .id = UCLASS_MMC,
60 .of_match = pic32_sdhci_ids,
61 .probe = pic32_sdhci_probe,
62 .priv_auto_alloc_size = sizeof(struct sdhci_host),
63};