1102142c9SAndrei Pistirica /* 2102142c9SAndrei Pistirica * Support of SDHCI for Microchip PIC32 SoC. 3102142c9SAndrei Pistirica * 4102142c9SAndrei Pistirica * Copyright (C) 2015 Microchip Technology Inc. 5102142c9SAndrei Pistirica * Andrei Pistirica <andrei.pistirica@microchip.com> 6102142c9SAndrei Pistirica * 7102142c9SAndrei Pistirica * SPDX-License-Identifier: GPL-2.0+ 8102142c9SAndrei Pistirica */ 9102142c9SAndrei Pistirica 10102142c9SAndrei Pistirica #include <dm.h> 11102142c9SAndrei Pistirica #include <common.h> 12102142c9SAndrei Pistirica #include <sdhci.h> 13102142c9SAndrei Pistirica #include <asm/errno.h> 14102142c9SAndrei Pistirica #include <mach/pic32.h> 15102142c9SAndrei Pistirica 16102142c9SAndrei Pistirica DECLARE_GLOBAL_DATA_PTR; 17102142c9SAndrei Pistirica 18102142c9SAndrei Pistirica static int pic32_sdhci_probe(struct udevice *dev) 19102142c9SAndrei Pistirica { 20102142c9SAndrei Pistirica struct sdhci_host *host = dev_get_priv(dev); 21102142c9SAndrei Pistirica const void *fdt = gd->fdt_blob; 22102142c9SAndrei Pistirica u32 f_min_max[2]; 23102142c9SAndrei Pistirica fdt_addr_t addr; 24102142c9SAndrei Pistirica fdt_size_t size; 25102142c9SAndrei Pistirica int ret; 26102142c9SAndrei Pistirica 27102142c9SAndrei Pistirica addr = fdtdec_get_addr_size(fdt, dev->of_offset, "reg", &size); 28102142c9SAndrei Pistirica if (addr == FDT_ADDR_T_NONE) 29102142c9SAndrei Pistirica return -EINVAL; 30102142c9SAndrei Pistirica 31102142c9SAndrei Pistirica host->ioaddr = ioremap(addr, size); 32*cacd1d2fSMasahiro Yamada host->name = dev->name; 33102142c9SAndrei Pistirica host->quirks = SDHCI_QUIRK_NO_HISPD_BIT | SDHCI_QUIRK_NO_CD; 34102142c9SAndrei Pistirica host->bus_width = fdtdec_get_int(gd->fdt_blob, dev->of_offset, 35102142c9SAndrei Pistirica "bus-width", 4); 36102142c9SAndrei Pistirica 37102142c9SAndrei Pistirica ret = fdtdec_get_int_array(gd->fdt_blob, dev->of_offset, 38102142c9SAndrei Pistirica "clock-freq-min-max", f_min_max, 2); 39102142c9SAndrei Pistirica if (ret) { 40102142c9SAndrei Pistirica printf("sdhci: clock-freq-min-max not found\n"); 41102142c9SAndrei Pistirica return ret; 42102142c9SAndrei Pistirica } 43102142c9SAndrei Pistirica 44102142c9SAndrei Pistirica return add_sdhci(host, f_min_max[1], f_min_max[0]); 45102142c9SAndrei Pistirica } 46102142c9SAndrei Pistirica 47102142c9SAndrei Pistirica static const struct udevice_id pic32_sdhci_ids[] = { 48102142c9SAndrei Pistirica { .compatible = "microchip,pic32mzda-sdhci" }, 49102142c9SAndrei Pistirica { } 50102142c9SAndrei Pistirica }; 51102142c9SAndrei Pistirica 52102142c9SAndrei Pistirica U_BOOT_DRIVER(pic32_sdhci_drv) = { 53102142c9SAndrei Pistirica .name = "pic32_sdhci", 54102142c9SAndrei Pistirica .id = UCLASS_MMC, 55102142c9SAndrei Pistirica .of_match = pic32_sdhci_ids, 56102142c9SAndrei Pistirica .probe = pic32_sdhci_probe, 57102142c9SAndrei Pistirica .priv_auto_alloc_size = sizeof(struct sdhci_host), 58102142c9SAndrei Pistirica }; 59