spi-nor: supporting FM25Q64AI3 spi nor flash

Change-Id: Ie3190b3bc897af26bfa9e0948b528f4d65bc6b70

drivers/mtd/spi-nor/Makefile

@@ -17,6 +17,7 @@ spi-nor-objs			+= sst.o
 spi-nor-objs			+= winbond.o
 spi-nor-objs			+= xilinx.o
 spi-nor-objs			+= xmc.o
+spi-nor-objs			+= fmsh.o
 spi-nor-$(CONFIG_DEBUG_FS)	+= debugfs.o
 obj-$(CONFIG_MTD_SPI_NOR)	+= spi-nor.o
 

drivers/mtd/spi-nor/core.c

@@ -2015,6 +2015,7 @@ static const struct spi_nor_manufacturer *manufacturers[] = {
 	&spi_nor_winbond,
 	&spi_nor_xilinx,
 	&spi_nor_xmc,
+	&spi_nor_fmsh,
 };
 
 static const struct flash_info spi_nor_generic_flash = {

drivers/mtd/spi-nor/core.h

@@ -647,6 +647,7 @@ extern const struct spi_nor_manufacturer spi_nor_sst;
 extern const struct spi_nor_manufacturer spi_nor_winbond;
 extern const struct spi_nor_manufacturer spi_nor_xilinx;
 extern const struct spi_nor_manufacturer spi_nor_xmc;
+extern const struct spi_nor_manufacturer spi_nor_fmsh;
 
 extern const struct attribute_group *spi_nor_sysfs_groups[];
 

drivers/mtd/spi-nor/fmsh.c

@@ -0,0 +1,20 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2023, spacemit Corporation.
+ */
+
+#include <linux/mtd/spi-nor.h>
+
+#include "core.h"
+
+static const struct flash_info fmsh_nor_parts[] = {
+	{ "FM25Q64AI3", INFO(0xa14017, 0, 4 * 1024,  2048)
+		NO_SFDP_FLAGS(SECT_4K | SPI_NOR_QUAD_READ |
+			      SPI_NOR_DUAL_READ) },
+};
+
+const struct spi_nor_manufacturer spi_nor_fmsh = {
+	.name = "fmsh",
+	.parts = fmsh_nor_parts,
+	.nparts = ARRAY_SIZE(fmsh_nor_parts),
+};