projects / thirdparty / u-boot.git / blame
| Commit | Line | Data |
|---|---|---|
| 3363a73d JL |
1 | // SPDX-License-Identifier: GPL-2.0+ |
| 2 | /* | |
| 3 | * Copyright (c) 2022 Nuvoton Technology Corp. | |
| 4 | */ | |
| 5 | ||
| 6 | #include <common.h> | |
| 7 | #include <dm.h> | |
| 8 | #include <sdhci.h> | |
| 9 | #include <clk.h> | |
| 10 | #include <power/regulator.h> | |
| 11 | ||
| 12 | #define NPCM_SDHC_MIN_FREQ 400000 | |
| 13 | ||
| 14 | struct npcm_sdhci_plat { | |
| 15 | struct mmc_config cfg; | |
| 16 | struct mmc mmc; | |
| 17 | }; | |
| 18 | ||
| 19 | static int npcm_sdhci_probe(struct udevice *dev) | |
| 20 | { | |
| 21 | struct npcm_sdhci_plat *plat = dev_get_plat(dev); | |
| 22 | struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev); | |
| 23 | struct sdhci_host *host = dev_get_priv(dev); | |
| 24 | struct udevice *vqmmc_supply; | |
| 25 | int vqmmc_uv, ret; | |
| 26 | struct clk clk; | |
| 27 | ||
| 28 | host->name = dev->name; | |
| 29 | host->ioaddr = dev_read_addr_ptr(dev); | |
| 30 | host->max_clk = dev_read_u32_default(dev, "clock-frequency", 0); | |
| 31 | ||
| 32 | ret = clk_get_by_index(dev, 0, &clk); | |
| 33 | if (!ret && host->max_clk) { | |
| 34 | ret = clk_set_rate(&clk, host->max_clk); | |
| 35 | if (ret < 0) | |
| 36 | return ret; | |
| 37 | } | |
| 38 | ||
| 6419dbab | 39 | if (CONFIG_IS_ENABLED(DM_REGULATOR)) { |
| 3363a73d JL |
40 | device_get_supply_regulator(dev, "vqmmc-supply", &vqmmc_supply); |
| 41 | vqmmc_uv = dev_read_u32_default(dev, "vqmmc-microvolt", 0); | |
| 42 | /* Set IO voltage */ | |
| 43 | if (vqmmc_supply && vqmmc_uv) | |
| 44 | regulator_set_value(vqmmc_supply, vqmmc_uv); | |
| 45 | } | |
| 46 | ||
| 47 | host->index = dev_read_u32_default(dev, "index", 0); | |
| 48 | ret = mmc_of_parse(dev, &plat->cfg); | |
| 49 | if (ret) | |
| 50 | return ret; | |
| 51 | ||
| 52 | host->mmc = &plat->mmc; | |
| 53 | host->mmc->priv = host; | |
| 54 | host->mmc->dev = dev; | |
| 55 | upriv->mmc = host->mmc; | |
| 56 | ||
| 57 | ret = sdhci_setup_cfg(&plat->cfg, host, 0, NPCM_SDHC_MIN_FREQ); | |
| 58 | if (ret) | |
| 59 | return ret; | |
| 60 | ||
| 61 | return sdhci_probe(dev); | |
| 62 | } | |
| 63 | ||
| 64 | static int npcm_sdhci_bind(struct udevice *dev) | |
| 65 | { | |
| 66 | struct npcm_sdhci_plat *plat = dev_get_plat(dev); | |
| 67 | ||
| 68 | return sdhci_bind(dev, &plat->mmc, &plat->cfg); | |
| 69 | } | |
| 70 | ||
| 71 | static const struct udevice_id npcm_mmc_ids[] = { | |
| 72 | { .compatible = "nuvoton,npcm750-sdhci" }, | |
| 73 | { .compatible = "nuvoton,npcm845-sdhci" }, | |
| 74 | { } | |
| 75 | }; | |
| 76 | ||
| 77 | U_BOOT_DRIVER(npcm_sdhci_drv) = { | |
| 78 | .name = "npcm_sdhci", | |
| 79 | .id = UCLASS_MMC, | |
| 80 | .of_match = npcm_mmc_ids, | |
| 81 | .ops = &sdhci_ops, | |
| 82 | .bind = npcm_sdhci_bind, | |
| 83 | .probe = npcm_sdhci_probe, | |
| 84 | .priv_auto = sizeof(struct sdhci_host), | |
| 85 | .plat_auto = sizeof(struct npcm_sdhci_plat), | |
| 86 | }; |