1 files changed, 100 insertions, 0 deletions
diff --git a/drivers/mmc/mv_sdhci.c b/drivers/mmc/mv_sdhci.c
new file mode 100644
index 00000000000..2da5334c21f
--- /dev/null
+++ b/drivers/mmc/mv_sdhci.c
@@ -0,0 +1,100 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Marvell SD Host Controller Interface
+ */
+
+#include <dm.h>
+#include <malloc.h>
+#include <sdhci.h>
+#include <asm/global_data.h>
+#include <linux/mbus.h>
+
+#define MVSDH_NAME "mv_sdh"
+
+#define SDHCI_WINDOW_CTRL(win)		(0x4080 + ((win) << 4))
+#define SDHCI_WINDOW_BASE(win)		(0x4084 + ((win) << 4))
+
+DECLARE_GLOBAL_DATA_PTR;
+
+struct mv_sdhci_plat {
+	struct mmc_config cfg;
+	struct mmc mmc;
+};
+
+static void sdhci_mvebu_mbus_config(void __iomem *base)
+{
+	const struct mbus_dram_target_info *dram;
+	int i;
+
+	dram = mvebu_mbus_dram_info();
+
+	for (i = 0; i < 4; i++) {
+		writel(0, base + SDHCI_WINDOW_CTRL(i));
+		writel(0, base + SDHCI_WINDOW_BASE(i));
+	}
+
+	for (i = 0; i < dram->num_cs; i++) {
+		const struct mbus_dram_window *cs = dram->cs + i;
+
+		/* Write size, attributes and target id to control register */
+		writel(((cs->size - 1) & 0xffff0000) | (cs->mbus_attr << 8) |
+		       (dram->mbus_dram_target_id << 4) | 1,
+		       base + SDHCI_WINDOW_CTRL(i));
+
+		/* Write base address to base register */
+		writel(cs->base, base + SDHCI_WINDOW_BASE(i));
+	}
+}
+
+static int mv_sdhci_probe(struct udevice *dev)
+{
+	struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev);
+	struct mv_sdhci_plat *plat = dev_get_plat(dev);
+	struct sdhci_host *host = dev_get_priv(dev);
+	int ret;
+
+	host->name = MVSDH_NAME;
+	host->ioaddr = dev_read_addr_ptr(dev);
+	host->quirks = SDHCI_QUIRK_32BIT_DMA_ADDR | SDHCI_QUIRK_WAIT_SEND_CMD;
+	host->mmc = &plat->mmc;
+	host->mmc->dev = dev;
+	host->mmc->priv = host;
+
+	ret = mmc_of_parse(dev, &plat->cfg);
+	if (ret)
+		return ret;
+
+	ret = sdhci_setup_cfg(&plat->cfg, host, 0, 0);
+	if (ret)
+		return ret;
+
+	/* Configure SDHCI MBUS mbus bridge windows */
+	sdhci_mvebu_mbus_config(host->ioaddr);
+
+	upriv->mmc = host->mmc;
+
+	return sdhci_probe(dev);
+}
+
+static int mv_sdhci_bind(struct udevice *dev)
+{
+	struct mv_sdhci_plat *plat = dev_get_plat(dev);
+
+	return sdhci_bind(dev, &plat->mmc, &plat->cfg);
+}
+
+static const struct udevice_id mv_sdhci_ids[] = {
+	{ .compatible = "marvell,armada-380-sdhci" },
+	{ }
+};
+
+U_BOOT_DRIVER(mv_sdhci_drv) = {
+	.name		= MVSDH_NAME,
+	.id		= UCLASS_MMC,
+	.of_match	= mv_sdhci_ids,
+	.bind		= mv_sdhci_bind,
+	.probe		= mv_sdhci_probe,
+	.ops		= &sdhci_ops,
+	.priv_auto	= sizeof(struct sdhci_host),
+	.plat_auto	= sizeof(struct mv_sdhci_plat),
+};