nand: raw: add support for MediaTek MT7621 SoC
This patch adds NAND flash controller driver for MediaTek MT7621 SoC.
The NAND flash controller of MT7621 supports only SLC NAND flashes.
It supports 4~12 bits correction with maximum 4KB page size.
diff --git a/drivers/mtd/nand/raw/mt7621_nand.h b/drivers/mtd/nand/raw/mt7621_nand.h
new file mode 100644
index 0000000..af4bc55
--- /dev/null
+++ b/drivers/mtd/nand/raw/mt7621_nand.h
@@ -0,0 +1,29 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2022 MediaTek Inc. All rights reserved.
+ *
+ * Author: Weijie Gao <weijie.gao@mediatek.com>
+ */
+
+#ifndef _MT7621_NAND_H_
+#define _MT7621_NAND_H_
+
+#include <linux/types.h>
+#include <linux/mtd/mtd.h>
+#include <linux/compiler.h>
+#include <linux/mtd/rawnand.h>
+
+struct mt7621_nfc {
+ struct nand_chip nand;
+
+ void __iomem *nfi_regs;
+ void __iomem *ecc_regs;
+
+ u32 spare_per_sector;
+};
+
+/* for SPL */
+void mt7621_nfc_spl_init(struct mt7621_nfc *nfc);
+int mt7621_nfc_spl_post_init(struct mt7621_nfc *nfc);
+
+#endif /* _MT7621_NAND_H_ */