[PATCH] mtd: spi-nor: Add support for BoHong bh25q128as

[David Bauer <mail@david-bauer.net>]

Add MTD support for the BoHong bh25q128as SPI NOR chip.
The chip has 16MB of total capacity, divided into a total of 256
sectors, each 64KB sized. The chip also supports 4KB sectors.
Additionally, it supports dual and quad read modes.

Functionality was verified on an Tenbay WR1800K / MTK MT7621 board.

Signed-off-by: David Bauer <mail@david-bauer.net>
---
 drivers/mtd/spi-nor/Makefile |  1 +
 drivers/mtd/spi-nor/bohong.c | 21 +++++++++++++++++++++
 drivers/mtd/spi-nor/core.c   |  1 +
 drivers/mtd/spi-nor/core.h   |  1 +
 4 files changed, 24 insertions(+)
 create mode 100644 drivers/mtd/spi-nor/bohong.c

diff --git a/drivers/mtd/spi-nor/Makefile b/drivers/mtd/spi-nor/Makefile
index 653923896205..de0b2d3bcb1c 100644
--- a/drivers/mtd/spi-nor/Makefile
+++ b/drivers/mtd/spi-nor/Makefile
@@ -2,6 +2,7 @@
 
 spi-nor-objs			:= core.o sfdp.o
 spi-nor-objs			+= atmel.o
+spi-nor-objs			+= bohong.o
 spi-nor-objs			+= catalyst.o
 spi-nor-objs			+= eon.o
 spi-nor-objs			+= esmt.o
diff --git a/drivers/mtd/spi-nor/bohong.c b/drivers/mtd/spi-nor/bohong.c
new file mode 100644
index 000000000000..20aeceb1b2d1
--- /dev/null
+++ b/drivers/mtd/spi-nor/bohong.c
@@ -0,0 +1,21 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2005, Intec Automation Inc.
+ * Copyright (C) 2014, Freescale Semiconductor, Inc.
+ */
+
+#include <linux/mtd/spi-nor.h>
+
+#include "core.h"
+
+static const struct flash_info bohong_parts[] = {
+	/* BoHong Microelectronics */
+	{ "bh25q128as", INFO(0x684018, 0, 64 * 1024, 256,
+			    SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) },
+};
+
+const struct spi_nor_manufacturer spi_nor_bohong = {
+	.name = "bohong",
+	.parts = bohong_parts,
+	.nparts = ARRAY_SIZE(bohong_parts),
+};
diff --git a/drivers/mtd/spi-nor/core.c b/drivers/mtd/spi-nor/core.c
index 0522304f52fa..03a05bce6231 100644
--- a/drivers/mtd/spi-nor/core.c
+++ b/drivers/mtd/spi-nor/core.c
@@ -2199,6 +2199,7 @@ int spi_nor_sr2_bit7_quad_enable(struct spi_nor *nor)
 
 static const struct spi_nor_manufacturer *manufacturers[] = {
 	&spi_nor_atmel,
+	&spi_nor_bohong,
 	&spi_nor_catalyst,
 	&spi_nor_eon,
 	&spi_nor_esmt,
diff --git a/drivers/mtd/spi-nor/core.h b/drivers/mtd/spi-nor/core.h
index 4a3f7f150b5d..b71323317235 100644
--- a/drivers/mtd/spi-nor/core.h
+++ b/drivers/mtd/spi-nor/core.h
@@ -409,6 +409,7 @@ struct spi_nor_manufacturer {
 
 /* Manufacturer drivers. */
 extern const struct spi_nor_manufacturer spi_nor_atmel;
+extern const struct spi_nor_manufacturer spi_nor_bohong;
 extern const struct spi_nor_manufacturer spi_nor_catalyst;
 extern const struct spi_nor_manufacturer spi_nor_eon;
 extern const struct spi_nor_manufacturer spi_nor_esmt;
-- 
2.31.1


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