1 /* 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 16 DECLARE_GLOBAL_DATA_PTR; 17 18 static 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); 32 host->name = dev->name; 33 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 44 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; 50 } 51 52 static const struct udevice_id pic32_sdhci_ids[] = { 53 { .compatible = "microchip,pic32mzda-sdhci" }, 54 { } 55 }; 56 57 U_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 }; 64