1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * Copyright (c) 2017 Intel Corporation
4 */
5 #include <common.h>
6 #include <dm.h>
7 #include <dm/device.h>
8 #include <linux/io.h>
9 #include <linux/sizes.h>
10 #include <malloc.h>
11 #include <mmc.h>
12 #include <sdhci.h>
13
14 #define SDHCI_TANGIER_FMAX 200000000
15 #define SDHCI_TANGIER_FMIN 400000
16
17 struct sdhci_tangier_plat {
18 struct mmc_config cfg;
19 struct mmc mmc;
20 void __iomem *ioaddr;
21 };
22
sdhci_tangier_bind(struct udevice * dev)23 static int sdhci_tangier_bind(struct udevice *dev)
24 {
25 struct sdhci_tangier_plat *plat = dev_get_plat(dev);
26
27 return sdhci_bind(dev, &plat->mmc, &plat->cfg);
28 }
29
sdhci_tangier_probe(struct udevice * dev)30 static int sdhci_tangier_probe(struct udevice *dev)
31 {
32 struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev);
33 struct sdhci_tangier_plat *plat = dev_get_plat(dev);
34 struct sdhci_host *host = dev_get_priv(dev);
35 fdt_addr_t base;
36 int ret;
37
38 base = dev_read_addr(dev);
39 if (base == FDT_ADDR_T_NONE)
40 return -EINVAL;
41
42 plat->ioaddr = devm_ioremap(dev, base, SZ_1K);
43 if (!plat->ioaddr)
44 return -ENOMEM;
45
46 host->name = dev->name;
47 host->ioaddr = plat->ioaddr;
48 host->quirks = SDHCI_QUIRK_NO_HISPD_BIT | SDHCI_QUIRK_BROKEN_VOLTAGE |
49 SDHCI_QUIRK_32BIT_DMA_ADDR | SDHCI_QUIRK_WAIT_SEND_CMD;
50
51 /* MMC_VDD_32_33 | MMC_VDD_33_34 | MMC_VDD_165_195 */
52 host->voltages = MMC_VDD_165_195;
53
54 host->mmc = &plat->mmc;
55 host->mmc->dev = dev;
56 ret = sdhci_setup_cfg(&plat->cfg, host, SDHCI_TANGIER_FMAX,
57 SDHCI_TANGIER_FMIN);
58 if (ret)
59 return ret;
60
61 upriv->mmc = &plat->mmc;
62 host->mmc->priv = host;
63
64 return sdhci_probe(dev);
65 }
66
67 static const struct udevice_id sdhci_tangier_match[] = {
68 { .compatible = "intel,sdhci-tangier" },
69 { /* sentinel */ }
70 };
71
72 U_BOOT_DRIVER(sdhci_tangier) = {
73 .name = "sdhci-tangier",
74 .id = UCLASS_MMC,
75 .of_match = sdhci_tangier_match,
76 .bind = sdhci_tangier_bind,
77 .probe = sdhci_tangier_probe,
78 .ops = &sdhci_ops,
79 .priv_auto = sizeof(struct sdhci_host),
80 .plat_auto = sizeof(struct sdhci_tangier_plat),
81 };
82