110 lines
2.5 KiB
C
110 lines
2.5 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Copyright (C) 2018 Texas Instruments Incorporated - http://www.ti.com/
|
|
*
|
|
* Texas Instruments' K3 SD Host Controller Interface
|
|
*/
|
|
|
|
#include <clk.h>
|
|
#include <common.h>
|
|
#include <dm.h>
|
|
#include <malloc.h>
|
|
#include <power-domain.h>
|
|
#include <sdhci.h>
|
|
|
|
#define K3_ARASAN_SDHCI_MIN_FREQ 0
|
|
|
|
struct k3_arasan_sdhci_plat {
|
|
struct mmc_config cfg;
|
|
struct mmc mmc;
|
|
unsigned int f_max;
|
|
};
|
|
|
|
static int k3_arasan_sdhci_probe(struct udevice *dev)
|
|
{
|
|
struct k3_arasan_sdhci_plat *plat = dev_get_platdata(dev);
|
|
struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev);
|
|
struct sdhci_host *host = dev_get_priv(dev);
|
|
struct power_domain sdhci_pwrdmn;
|
|
struct clk clk;
|
|
unsigned long clock;
|
|
int ret;
|
|
|
|
ret = power_domain_get_by_index(dev, &sdhci_pwrdmn, 0);
|
|
if (ret) {
|
|
dev_err(dev, "failed to get power domain\n");
|
|
return ret;
|
|
}
|
|
|
|
ret = power_domain_on(&sdhci_pwrdmn);
|
|
if (ret) {
|
|
dev_err(dev, "Power domain on failed\n");
|
|
return ret;
|
|
}
|
|
|
|
ret = clk_get_by_index(dev, 0, &clk);
|
|
if (ret) {
|
|
dev_err(dev, "failed to get clock\n");
|
|
return ret;
|
|
}
|
|
|
|
clock = clk_get_rate(&clk);
|
|
if (IS_ERR_VALUE(clock)) {
|
|
dev_err(dev, "failed to get rate\n");
|
|
return clock;
|
|
}
|
|
|
|
host->quirks = SDHCI_QUIRK_WAIT_SEND_CMD |
|
|
SDHCI_QUIRK_BROKEN_R1B;
|
|
|
|
host->max_clk = clock;
|
|
|
|
ret = sdhci_setup_cfg(&plat->cfg, host, plat->f_max,
|
|
K3_ARASAN_SDHCI_MIN_FREQ);
|
|
host->mmc = &plat->mmc;
|
|
if (ret)
|
|
return ret;
|
|
host->mmc->priv = host;
|
|
host->mmc->dev = dev;
|
|
upriv->mmc = host->mmc;
|
|
|
|
return sdhci_probe(dev);
|
|
}
|
|
|
|
static int k3_arasan_sdhci_ofdata_to_platdata(struct udevice *dev)
|
|
{
|
|
struct k3_arasan_sdhci_plat *plat = dev_get_platdata(dev);
|
|
struct sdhci_host *host = dev_get_priv(dev);
|
|
|
|
host->name = dev->name;
|
|
host->ioaddr = (void *)dev_read_addr(dev);
|
|
host->bus_width = dev_read_u32_default(dev, "bus-width", 4);
|
|
plat->f_max = dev_read_u32_default(dev, "max-frequency", 0);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int k3_arasan_sdhci_bind(struct udevice *dev)
|
|
{
|
|
struct k3_arasan_sdhci_plat *plat = dev_get_platdata(dev);
|
|
|
|
return sdhci_bind(dev, &plat->mmc, &plat->cfg);
|
|
}
|
|
|
|
static const struct udevice_id k3_arasan_sdhci_ids[] = {
|
|
{ .compatible = "arasan,sdhci-5.1" },
|
|
{ }
|
|
};
|
|
|
|
U_BOOT_DRIVER(k3_arasan_sdhci_drv) = {
|
|
.name = "k3_arasan_sdhci",
|
|
.id = UCLASS_MMC,
|
|
.of_match = k3_arasan_sdhci_ids,
|
|
.ofdata_to_platdata = k3_arasan_sdhci_ofdata_to_platdata,
|
|
.ops = &sdhci_ops,
|
|
.bind = k3_arasan_sdhci_bind,
|
|
.probe = k3_arasan_sdhci_probe,
|
|
.priv_auto_alloc_size = sizeof(struct sdhci_host),
|
|
.platdata_auto_alloc_size = sizeof(struct k3_arasan_sdhci_plat),
|
|
};
|