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79c83065 KY |
1 | /* |
2 | * (C) Copyright 2016 Fuzhou Rockchip Electronics Co., Ltd | |
3 | * | |
4 | * Rockchip SD Host Controller Interface | |
5 | * | |
6 | * SPDX-License-Identifier: GPL-2.0+ | |
7 | */ | |
8 | ||
9 | #include <common.h> | |
10 | #include <dm.h> | |
c2868212 | 11 | #include <dt-structs.h> |
79c83065 KY |
12 | #include <fdtdec.h> |
13 | #include <libfdt.h> | |
14 | #include <malloc.h> | |
c2868212 | 15 | #include <mapmem.h> |
79c83065 | 16 | #include <sdhci.h> |
39fbb56f | 17 | #include <clk.h> |
79c83065 | 18 | |
39fbb56f | 19 | DECLARE_GLOBAL_DATA_PTR; |
79c83065 KY |
20 | /* 400KHz is max freq for card ID etc. Use that as min */ |
21 | #define EMMC_MIN_FREQ 400000 | |
22 | ||
23 | struct rockchip_sdhc_plat { | |
c2868212 KY |
24 | #if CONFIG_IS_ENABLED(OF_PLATDATA) |
25 | struct dtd_rockchip_rk3399_sdhci_5_1 dtplat; | |
26 | #endif | |
79c83065 KY |
27 | struct mmc_config cfg; |
28 | struct mmc mmc; | |
29 | }; | |
30 | ||
31 | struct rockchip_sdhc { | |
32 | struct sdhci_host host; | |
33 | void *base; | |
34 | }; | |
35 | ||
36 | static int arasan_sdhci_probe(struct udevice *dev) | |
37 | { | |
38 | struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev); | |
39 | struct rockchip_sdhc_plat *plat = dev_get_platdata(dev); | |
40 | struct rockchip_sdhc *prv = dev_get_priv(dev); | |
41 | struct sdhci_host *host = &prv->host; | |
39fbb56f KY |
42 | int max_frequency, ret; |
43 | struct clk clk; | |
44 | ||
c2868212 KY |
45 | #if CONFIG_IS_ENABLED(OF_PLATDATA) |
46 | struct dtd_rockchip_rk3399_sdhci_5_1 *dtplat = &plat->dtplat; | |
39fbb56f | 47 | |
c2868212 KY |
48 | host->name = dev->name; |
49 | host->ioaddr = map_sysmem(dtplat->reg[1], dtplat->reg[3]); | |
50 | max_frequency = dtplat->max_frequency; | |
51 | ret = clk_get_by_index_platdata(dev, 0, dtplat->clocks, &clk); | |
52 | #else | |
fd1bf8df | 53 | max_frequency = dev_read_u32_default(dev, "max-frequency", 0); |
39fbb56f | 54 | ret = clk_get_by_index(dev, 0, &clk); |
c2868212 | 55 | #endif |
39fbb56f KY |
56 | if (!ret) { |
57 | ret = clk_set_rate(&clk, max_frequency); | |
58 | if (IS_ERR_VALUE(ret)) | |
59 | printf("%s clk set rate fail!\n", __func__); | |
60 | } else { | |
61 | printf("%s fail to get clk\n", __func__); | |
62 | } | |
79c83065 | 63 | |
79c83065 | 64 | host->quirks = SDHCI_QUIRK_WAIT_SEND_CMD; |
6d0e34bf | 65 | host->max_clk = max_frequency; |
79c83065 | 66 | |
6d0e34bf | 67 | ret = sdhci_setup_cfg(&plat->cfg, host, 0, EMMC_MIN_FREQ); |
79c83065 KY |
68 | |
69 | host->mmc = &plat->mmc; | |
70 | if (ret) | |
71 | return ret; | |
72 | host->mmc->priv = &prv->host; | |
73 | host->mmc->dev = dev; | |
74 | upriv->mmc = host->mmc; | |
75 | ||
76 | return sdhci_probe(dev); | |
77 | } | |
78 | ||
79 | static int arasan_sdhci_ofdata_to_platdata(struct udevice *dev) | |
80 | { | |
c2868212 | 81 | #if !CONFIG_IS_ENABLED(OF_PLATDATA) |
79c83065 KY |
82 | struct sdhci_host *host = dev_get_priv(dev); |
83 | ||
84 | host->name = dev->name; | |
a821c4af | 85 | host->ioaddr = devfdt_get_addr_ptr(dev); |
c2868212 | 86 | #endif |
79c83065 KY |
87 | |
88 | return 0; | |
89 | } | |
90 | ||
91 | static int rockchip_sdhci_bind(struct udevice *dev) | |
92 | { | |
93 | struct rockchip_sdhc_plat *plat = dev_get_platdata(dev); | |
79c83065 | 94 | |
24f5aec3 | 95 | return sdhci_bind(dev, &plat->mmc, &plat->cfg); |
79c83065 KY |
96 | } |
97 | ||
98 | static const struct udevice_id arasan_sdhci_ids[] = { | |
99 | { .compatible = "arasan,sdhci-5.1" }, | |
100 | { } | |
101 | }; | |
102 | ||
103 | U_BOOT_DRIVER(arasan_sdhci_drv) = { | |
c2868212 | 104 | .name = "rockchip_rk3399_sdhci_5_1", |
79c83065 KY |
105 | .id = UCLASS_MMC, |
106 | .of_match = arasan_sdhci_ids, | |
107 | .ofdata_to_platdata = arasan_sdhci_ofdata_to_platdata, | |
108 | .ops = &sdhci_ops, | |
109 | .bind = rockchip_sdhci_bind, | |
110 | .probe = arasan_sdhci_probe, | |
111 | .priv_auto_alloc_size = sizeof(struct rockchip_sdhc), | |
112 | .platdata_auto_alloc_size = sizeof(struct rockchip_sdhc_plat), | |
113 | }; |