2 * (C) Copyright 2016 Fuzhou Rockchip Electronics Co., Ltd
4 * Rockchip SD Host Controller Interface
6 * SPDX-License-Identifier: GPL-2.0+
16 /* 400KHz is max freq for card ID etc. Use that as min */
17 #define EMMC_MIN_FREQ 400000
19 struct rockchip_sdhc_plat {
20 struct mmc_config cfg;
24 struct rockchip_sdhc {
25 struct sdhci_host host;
29 static int arasan_sdhci_probe(struct udevice *dev)
31 struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev);
32 struct rockchip_sdhc_plat *plat = dev_get_platdata(dev);
33 struct rockchip_sdhc *prv = dev_get_priv(dev);
34 struct sdhci_host *host = &prv->host;
38 host->version = sdhci_readw(host, SDHCI_HOST_VERSION);
39 host->quirks = SDHCI_QUIRK_WAIT_SEND_CMD;
41 caps = sdhci_readl(host, SDHCI_CAPABILITIES);
42 ret = sdhci_setup_cfg(&plat->cfg, dev->name, host->bus_width,
43 caps, CONFIG_ROCKCHIP_SDHCI_MAX_FREQ, EMMC_MIN_FREQ,
44 host->version, host->quirks, 0);
46 host->mmc = &plat->mmc;
49 host->mmc->priv = &prv->host;
51 upriv->mmc = host->mmc;
53 return sdhci_probe(dev);
56 static int arasan_sdhci_ofdata_to_platdata(struct udevice *dev)
58 struct sdhci_host *host = dev_get_priv(dev);
60 host->name = dev->name;
61 host->ioaddr = dev_get_addr_ptr(dev);
66 static int rockchip_sdhci_bind(struct udevice *dev)
68 struct rockchip_sdhc_plat *plat = dev_get_platdata(dev);
71 ret = sdhci_bind(dev, &plat->mmc, &plat->cfg);
78 static const struct udevice_id arasan_sdhci_ids[] = {
79 { .compatible = "arasan,sdhci-5.1" },
83 U_BOOT_DRIVER(arasan_sdhci_drv) = {
84 .name = "arasan_sdhci",
86 .of_match = arasan_sdhci_ids,
87 .ofdata_to_platdata = arasan_sdhci_ofdata_to_platdata,
89 .bind = rockchip_sdhci_bind,
90 .probe = arasan_sdhci_probe,
91 .priv_auto_alloc_size = sizeof(struct rockchip_sdhc),
92 .platdata_auto_alloc_size = sizeof(struct rockchip_sdhc_plat),