2 * (C) Copyright 2013 - 2015 Xilinx, Inc.
4 * Xilinx Zynq SD Host Controller Interface
6 * SPDX-License-Identifier: GPL-2.0+
17 DECLARE_GLOBAL_DATA_PTR
;
19 #ifndef CONFIG_ZYNQ_SDHCI_MIN_FREQ
20 # define CONFIG_ZYNQ_SDHCI_MIN_FREQ 0
23 struct arasan_sdhci_plat
{
24 struct mmc_config cfg
;
29 static int arasan_sdhci_probe(struct udevice
*dev
)
31 struct arasan_sdhci_plat
*plat
= dev_get_platdata(dev
);
32 struct mmc_uclass_priv
*upriv
= dev_get_uclass_priv(dev
);
33 struct sdhci_host
*host
= dev_get_priv(dev
);
38 ret
= clk_get_by_index(dev
, 0, &clk
);
40 dev_err(dev
, "failed to get clock\n");
44 clock
= clk_get_rate(&clk
);
45 if (IS_ERR_VALUE(clock
)) {
46 dev_err(dev
, "failed to get rate\n");
49 debug("%s: CLK %ld\n", __func__
, clock
);
51 ret
= clk_enable(&clk
);
52 if (ret
&& ret
!= -ENOSYS
) {
53 dev_err(dev
, "failed to enable clock\n");
57 host
->quirks
= SDHCI_QUIRK_WAIT_SEND_CMD
|
58 SDHCI_QUIRK_BROKEN_R1B
;
60 #ifdef CONFIG_ZYNQ_HISPD_BROKEN
61 host
->quirks
|= SDHCI_QUIRK_NO_HISPD_BIT
;
64 host
->max_clk
= clock
;
66 ret
= sdhci_setup_cfg(&plat
->cfg
, host
, plat
->f_max
,
67 CONFIG_ZYNQ_SDHCI_MIN_FREQ
);
68 host
->mmc
= &plat
->mmc
;
71 host
->mmc
->priv
= host
;
73 upriv
->mmc
= host
->mmc
;
75 return sdhci_probe(dev
);
78 static int arasan_sdhci_ofdata_to_platdata(struct udevice
*dev
)
80 struct arasan_sdhci_plat
*plat
= dev_get_platdata(dev
);
81 struct sdhci_host
*host
= dev_get_priv(dev
);
83 host
->name
= dev
->name
;
84 host
->ioaddr
= (void *)devfdt_get_addr(dev
);
86 plat
->f_max
= fdtdec_get_int(gd
->fdt_blob
, dev_of_offset(dev
),
87 "max-frequency", CONFIG_ZYNQ_SDHCI_MAX_FREQ
);
92 static int arasan_sdhci_bind(struct udevice
*dev
)
94 struct arasan_sdhci_plat
*plat
= dev_get_platdata(dev
);
96 return sdhci_bind(dev
, &plat
->mmc
, &plat
->cfg
);
99 static const struct udevice_id arasan_sdhci_ids
[] = {
100 { .compatible
= "arasan,sdhci-8.9a" },
104 U_BOOT_DRIVER(arasan_sdhci_drv
) = {
105 .name
= "arasan_sdhci",
107 .of_match
= arasan_sdhci_ids
,
108 .ofdata_to_platdata
= arasan_sdhci_ofdata_to_platdata
,
110 .bind
= arasan_sdhci_bind
,
111 .probe
= arasan_sdhci_probe
,
112 .priv_auto_alloc_size
= sizeof(struct sdhci_host
),
113 .platdata_auto_alloc_size
= sizeof(struct arasan_sdhci_plat
),