1 files changed, 86 insertions, 0 deletions
diff --git a/drivers/mtd/nand/mxs_nand_dt.c b/drivers/mtd/nand/mxs_nand_dt.c
new file mode 100644
index 0000000000..f89eb091a9
--- /dev/null
+++ b/drivers/mtd/nand/mxs_nand_dt.c
@@ -0,0 +1,86 @@
+/*
+ * NXP GPMI NAND flash driver (DT initialization)
+ *
+ * Copyright (C) 2018 Toradex
+ * Authors:
+ * Stefan Agner <stefan.agner@toradex.com>
+ *
+ * Based on denali_dt.c
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <dm.h>
+#include <linux/io.h>
+#include <linux/ioport.h>
+#include <linux/printk.h>
+
+#include "mxs_nand.h"
+
+struct mxs_nand_dt_data {
+	unsigned int max_ecc_strength_supported;
+};
+
+static const struct mxs_nand_dt_data mxs_nand_imx7d_data = {
+	.max_ecc_strength_supported = 62,
+};
+
+static const struct udevice_id mxs_nand_dt_ids[] = {
+	{
+		.compatible = "fsl,imx7d-gpmi-nand",
+		.data = (unsigned long)&mxs_nand_imx7d_data,
+	},
+	{ /* sentinel */ }
+};
+
+static int mxs_nand_dt_probe(struct udevice *dev)
+{
+	struct mxs_nand_info *info = dev_get_priv(dev);
+	const struct mxs_nand_dt_data *data;
+	struct resource res;
+	int ret;
+
+	data = (void *)dev_get_driver_data(dev);
+	if (data)
+		info->max_ecc_strength_supported = data->max_ecc_strength_supported;
+
+	info->dev = dev;
+
+	ret = dev_read_resource_byname(dev, "gpmi-nand", &res);
+	if (ret)
+		return ret;
+
+	info->gpmi_regs = devm_ioremap(dev, res.start, resource_size(&res));
+
+
+	ret = dev_read_resource_byname(dev, "bch", &res);
+	if (ret)
+		return ret;
+
+	info->bch_regs = devm_ioremap(dev, res.start, resource_size(&res));
+
+	info->use_minimum_ecc = dev_read_bool(dev, "fsl,use-minimum-ecc");
+
+	return mxs_nand_init_ctrl(info);
+}
+
+U_BOOT_DRIVER(mxs_nand_dt) = {
+	.name = "mxs-nand-dt",
+	.id = UCLASS_MTD,
+	.of_match = mxs_nand_dt_ids,
+	.probe = mxs_nand_dt_probe,
+	.priv_auto_alloc_size = sizeof(struct mxs_nand_info),
+};
+
+void board_nand_init(void)
+{
+	struct udevice *dev;
+	int ret;
+
+	ret = uclass_get_device_by_driver(UCLASS_MTD,
+					  DM_GET_DRIVER(mxs_nand_dt),
+					  &dev);
+	if (ret && ret != -ENODEV)
+		pr_err("Failed to initialize MXS NAND controller. (error %d)\n",
+		       ret);
+}