1 /* 2 * (C) Copyright 2013 - 2015 Xilinx, Inc. 3 * 4 * Xilinx Zynq SD Host Controller Interface 5 * 6 * SPDX-License-Identifier: GPL-2.0+ 7 */ 8 9 #include <common.h> 10 #include <dm.h> 11 #include <fdtdec.h> 12 #include <libfdt.h> 13 #include <malloc.h> 14 #include <sdhci.h> 15 16 #ifndef CONFIG_ZYNQ_SDHCI_MIN_FREQ 17 # define CONFIG_ZYNQ_SDHCI_MIN_FREQ 0 18 #endif 19 20 static int arasan_sdhci_probe(struct udevice *dev) 21 { 22 struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev); 23 struct sdhci_host *host = dev_get_priv(dev); 24 25 host->quirks = SDHCI_QUIRK_WAIT_SEND_CMD | 26 SDHCI_QUIRK_BROKEN_R1B; 27 28 #ifdef CONFIG_ZYNQ_HISPD_BROKEN 29 host->quirks |= SDHCI_QUIRK_NO_HISPD_BIT; 30 #endif 31 32 host->version = sdhci_readw(host, SDHCI_HOST_VERSION); 33 34 add_sdhci(host, CONFIG_ZYNQ_SDHCI_MAX_FREQ, 35 CONFIG_ZYNQ_SDHCI_MIN_FREQ); 36 37 upriv->mmc = host->mmc; 38 39 return 0; 40 } 41 42 static int arasan_sdhci_ofdata_to_platdata(struct udevice *dev) 43 { 44 struct sdhci_host *host = dev_get_priv(dev); 45 46 host->name = (char *)dev->name; 47 host->ioaddr = (void *)dev_get_addr(dev); 48 49 return 0; 50 } 51 52 static const struct udevice_id arasan_sdhci_ids[] = { 53 { .compatible = "arasan,sdhci-8.9a" }, 54 { } 55 }; 56 57 U_BOOT_DRIVER(arasan_sdhci_drv) = { 58 .name = "arasan_sdhci", 59 .id = UCLASS_MMC, 60 .of_match = arasan_sdhci_ids, 61 .ofdata_to_platdata = arasan_sdhci_ofdata_to_platdata, 62 .probe = arasan_sdhci_probe, 63 .priv_auto_alloc_size = sizeof(struct sdhci_host), 64 }; 65