mtd: spi-nor: Add support for ZB25VQ128

Add support for the ZBIT ZB25VQ128 128MBit SPI NOR
flash.

Link: http://www.cipatelje.eu/pdf/ZB25VQ128.pdf
Signed-off-by: Daniel Palmer <daniel@0x0f.com>

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			+= zbit.o
 obj-$(CONFIG_MTD_SPI_NOR)	+= spi-nor.o
 
 obj-$(CONFIG_MTD_SPI_NOR)	+= controllers/

drivers/mtd/spi-nor/core.c

@@ -1846,6 +1846,7 @@ static const struct spi_nor_manufacturer *manufacturers[] = {
 	&spi_nor_winbond,
 	&spi_nor_xilinx,
 	&spi_nor_xmc,
+	&spi_nor_zbit,
 };
 
 static const struct flash_info *

drivers/mtd/spi-nor/core.h

@@ -536,6 +536,7 @@ 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_zbit;
 
 extern const struct attribute_group *spi_nor_sysfs_groups[];
 

drivers/mtd/spi-nor/zbit.c

@@ -0,0 +1,21 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2021, Daniel Palmer<daniel@thingy.jp>
+ */
+
+#include <linux/mtd/spi-nor.h>
+
+#include "core.h"
+
+static const struct flash_info zbit_parts[] = {
+	/* zbit */
+	{ "zb25vq128", INFO(0x5e4018, 0, 64 * 1024, 256,
+			    SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ |
+			    SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB) },
+};
+
+const struct spi_nor_manufacturer spi_nor_zbit = {
+	.name = "zbit",
+	.parts = zbit_parts,
+	.nparts = ARRAY_SIZE(zbit_parts),
+};