1 files changed, 109 insertions, 0 deletions
diff --git a/drivers/mmc/am654_sdhci.c b/drivers/mmc/am654_sdhci.c
new file mode 100644
index 00000000000..2d08fe3347e
--- /dev/null
+++ b/drivers/mmc/am654_sdhci.c
@@ -0,0 +1,109 @@
+// 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 AM654_SDHCI_MIN_FREQ	400000
+
+struct am654_sdhci_plat {
+	struct mmc_config cfg;
+	struct mmc mmc;
+	unsigned int f_max;
+};
+
+static int am654_sdhci_probe(struct udevice *dev)
+{
+	struct am654_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,
+			      AM654_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 am654_sdhci_ofdata_to_platdata(struct udevice *dev)
+{
+	struct am654_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 am654_sdhci_bind(struct udevice *dev)
+{
+	struct am654_sdhci_plat *plat = dev_get_platdata(dev);
+
+	return sdhci_bind(dev, &plat->mmc, &plat->cfg);
+}
+
+static const struct udevice_id am654_sdhci_ids[] = {
+	{ .compatible = "ti,am654-sdhci-5.1" },
+	{ }
+};
+
+U_BOOT_DRIVER(am654_sdhci_drv) = {
+	.name		= "am654_sdhci",
+	.id		= UCLASS_MMC,
+	.of_match	= am654_sdhci_ids,
+	.ofdata_to_platdata = am654_sdhci_ofdata_to_platdata,
+	.ops		= &sdhci_ops,
+	.bind		= am654_sdhci_bind,
+	.probe		= am654_sdhci_probe,
+	.priv_auto_alloc_size = sizeof(struct sdhci_host),
+	.platdata_auto_alloc_size = sizeof(struct am654_sdhci_plat),
+};