+// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2015 Atmel Corporation
* Wenyou.Yang <wenyou.yang@atmel.com>
- *
- * SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
+#include <clk.h>
+#include <dm.h>
#include <malloc.h>
#include <sdhci.h>
#include <asm/arch/clk.h>
#define ATMEL_SDHC_MIN_FREQ 400000
+#define ATMEL_SDHC_GCK_RATE 240000000
+#ifndef CONFIG_DM_MMC
int atmel_sdhci_init(void *regbase, u32 id)
{
struct sdhci_host *host;
host->name = "atmel_sdhci";
host->ioaddr = regbase;
- host->quirks = 0;
- host->version = sdhci_readw(host, SDHCI_HOST_VERSION);
+ host->quirks = SDHCI_QUIRK_WAIT_SEND_CMD;
max_clk = at91_get_periph_generated_clk(id);
if (!max_clk) {
printf("%s: Failed to get the proper clock\n", __func__);
free(host);
return -ENODEV;
}
+ host->max_clk = max_clk;
- add_sdhci(host, max_clk, min_clk);
+ add_sdhci(host, 0, min_clk);
return 0;
}
+
+#else
+
+DECLARE_GLOBAL_DATA_PTR;
+
+struct atmel_sdhci_plat {
+ struct mmc_config cfg;
+ struct mmc mmc;
+};
+
+static int atmel_sdhci_probe(struct udevice *dev)
+{
+ struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev);
+ struct atmel_sdhci_plat *plat = dev_get_platdata(dev);
+ struct sdhci_host *host = dev_get_priv(dev);
+ u32 max_clk;
+ struct clk clk;
+ int ret;
+
+ ret = clk_get_by_index(dev, 0, &clk);
+ if (ret)
+ return ret;
+
+ ret = clk_enable(&clk);
+ if (ret)
+ return ret;
+
+ host->name = dev->name;
+ host->ioaddr = (void *)devfdt_get_addr(dev);
+
+ host->quirks = SDHCI_QUIRK_WAIT_SEND_CMD;
+ host->bus_width = fdtdec_get_int(gd->fdt_blob, dev_of_offset(dev),
+ "bus-width", 4);
+
+ ret = clk_get_by_index(dev, 1, &clk);
+ if (ret)
+ return ret;
+
+ ret = clk_set_rate(&clk, ATMEL_SDHC_GCK_RATE);
+ if (ret)
+ return ret;
+
+ max_clk = clk_get_rate(&clk);
+ if (!max_clk)
+ return -EINVAL;
+
+ host->max_clk = max_clk;
+
+ ret = sdhci_setup_cfg(&plat->cfg, host, 0, ATMEL_SDHC_MIN_FREQ);
+ if (ret)
+ return ret;
+
+ host->mmc = &plat->mmc;
+ host->mmc->dev = dev;
+ host->mmc->priv = host;
+ upriv->mmc = host->mmc;
+
+ clk_free(&clk);
+
+ return sdhci_probe(dev);
+}
+
+static int atmel_sdhci_bind(struct udevice *dev)
+{
+ struct atmel_sdhci_plat *plat = dev_get_platdata(dev);
+
+ return sdhci_bind(dev, &plat->mmc, &plat->cfg);
+}
+
+static const struct udevice_id atmel_sdhci_ids[] = {
+ { .compatible = "atmel,sama5d2-sdhci" },
+ { }
+};
+
+U_BOOT_DRIVER(atmel_sdhci_drv) = {
+ .name = "atmel_sdhci",
+ .id = UCLASS_MMC,
+ .of_match = atmel_sdhci_ids,
+ .ops = &sdhci_ops,
+ .bind = atmel_sdhci_bind,
+ .probe = atmel_sdhci_probe,
+ .priv_auto_alloc_size = sizeof(struct sdhci_host),
+ .platdata_auto_alloc_size = sizeof(struct atmel_sdhci_plat),
+};
+#endif