blob: c71daae97584598f249a8a9ab54343a5d6be2fca [file] [log] [blame]
Eddie Jamesc8a65812019-08-27 09:48:03 -05001// SPDX-License-Identifier: GPL-2.0+
2/*
3 * Copyright 2019 IBM Corp.
4 * Eddie James <eajames@linux.ibm.com>
5 */
6
7#include <common.h>
8#include <clk.h>
9#include <dm.h>
10#include <malloc.h>
11#include <sdhci.h>
Simon Glassd66c5f72020-02-03 07:36:15 -070012#include <linux/err.h>
Eddie Jamesc8a65812019-08-27 09:48:03 -050013
14struct aspeed_sdhci_plat {
15 struct mmc_config cfg;
16 struct mmc mmc;
17};
18
19static int aspeed_sdhci_probe(struct udevice *dev)
20{
21 struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev);
Simon Glassfa20e932020-12-03 16:55:20 -070022 struct aspeed_sdhci_plat *plat = dev_get_plat(dev);
Eddie Jamesc8a65812019-08-27 09:48:03 -050023 struct sdhci_host *host = dev_get_priv(dev);
24 u32 max_clk;
25 struct clk clk;
26 int ret;
27
28 ret = clk_get_by_index(dev, 0, &clk);
Joel Stanley7dab5c12022-06-23 18:35:33 +093029 if (ret) {
30 debug("%s: clock get failed %d\n", __func__, ret);
Eddie Jamesc8a65812019-08-27 09:48:03 -050031 return ret;
Joel Stanley7dab5c12022-06-23 18:35:33 +093032 }
Eddie Jamesc8a65812019-08-27 09:48:03 -050033
34 ret = clk_enable(&clk);
Joel Stanley7dab5c12022-06-23 18:35:33 +093035 if (ret) {
36 debug("%s: clock enable failed %d\n", __func__, ret);
Eddie Jamesc8a65812019-08-27 09:48:03 -050037 goto free;
Joel Stanley7dab5c12022-06-23 18:35:33 +093038 }
Eddie Jamesc8a65812019-08-27 09:48:03 -050039
40 host->name = dev->name;
Masahiro Yamada1096ae12020-07-17 14:36:46 +090041 host->ioaddr = dev_read_addr_ptr(dev);
Eddie Jamesc8a65812019-08-27 09:48:03 -050042
43 max_clk = clk_get_rate(&clk);
44 if (IS_ERR_VALUE(max_clk)) {
45 ret = max_clk;
Joel Stanley7dab5c12022-06-23 18:35:33 +093046 debug("%s: clock rate get failed %d\n", __func__, ret);
Eddie Jamesc8a65812019-08-27 09:48:03 -050047 goto err;
48 }
49
50 host->max_clk = max_clk;
51 host->mmc = &plat->mmc;
52 host->mmc->dev = dev;
53 host->mmc->priv = host;
54 upriv->mmc = host->mmc;
55
56 ret = sdhci_setup_cfg(&plat->cfg, host, 0, 0);
57 if (ret)
58 goto err;
59
60 ret = sdhci_probe(dev);
61 if (ret)
62 goto err;
63
64 return 0;
65
66err:
67 clk_disable(&clk);
68free:
69 clk_free(&clk);
70 return ret;
71}
72
73static int aspeed_sdhci_bind(struct udevice *dev)
74{
Simon Glassfa20e932020-12-03 16:55:20 -070075 struct aspeed_sdhci_plat *plat = dev_get_plat(dev);
Eddie Jamesc8a65812019-08-27 09:48:03 -050076
77 return sdhci_bind(dev, &plat->mmc, &plat->cfg);
78}
79
80static const struct udevice_id aspeed_sdhci_ids[] = {
81 { .compatible = "aspeed,ast2400-sdhci" },
82 { .compatible = "aspeed,ast2500-sdhci" },
83 { .compatible = "aspeed,ast2600-sdhci" },
84 { }
85};
86
87U_BOOT_DRIVER(aspeed_sdhci_drv) = {
88 .name = "aspeed_sdhci",
89 .id = UCLASS_MMC,
90 .of_match = aspeed_sdhci_ids,
91 .ops = &sdhci_ops,
92 .bind = aspeed_sdhci_bind,
93 .probe = aspeed_sdhci_probe,
Simon Glass8a2b47f2020-12-03 16:55:17 -070094 .priv_auto = sizeof(struct sdhci_host),
Simon Glass71fa5b42020-12-03 16:55:18 -070095 .plat_auto = sizeof(struct aspeed_sdhci_plat),
Eddie Jamesc8a65812019-08-27 09:48:03 -050096};