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c06482489d
Flash accessing instruction templates are determined during probe since
v5.6 for spimem-dirmap support in spi-nor driver in upstream commit:
df5c21002cf4 ("mtd: spi-nor: use spi-mem dirmap API")
As a result, changing bus_width on the fly doesn't work anymore and this
patch will cause executing spi-mem ops with 3-byte address on 16-32M
flash area.
We can't easily revert that behavioral change upstream so drop the patch
to prevent u-boot and eeprom from being erased.
Fixes: b10d604459("kernel: add linux 5.10 support")
Reported-by: Frank Di Matteo <dimatto@foxmail.com>
Signed-off-by: Chuanhong Guo <gch981213@gmail.com>
76 lines
2.4 KiB
Diff
76 lines
2.4 KiB
Diff
From 52d14545d2fc276b1bf9ccf48d4612fab6edfb6a Mon Sep 17 00:00:00 2001
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From: David Bauer <mail@david-bauer.net>
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Date: Thu, 6 May 2021 17:49:55 +0200
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Subject: [PATCH] mtd: spi-nor: Add support for BoHong bh25q128as
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Add MTD support for the BoHong bh25q128as SPI NOR chip.
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The chip has 16MB of total capacity, divided into a total of 256
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sectors, each 64KB sized. The chip also supports 4KB sectors.
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Additionally, it supports dual and quad read modes.
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Functionality was verified on an Tenbay WR1800K / MTK MT7621 board.
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Signed-off-by: David Bauer <mail@david-bauer.net>
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---
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drivers/mtd/spi-nor/Makefile | 1 +
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drivers/mtd/spi-nor/bohong.c | 21 +++++++++++++++++++++
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drivers/mtd/spi-nor/core.c | 1 +
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drivers/mtd/spi-nor/core.h | 1 +
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4 files changed, 24 insertions(+)
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create mode 100644 drivers/mtd/spi-nor/bohong.c
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--- a/drivers/mtd/spi-nor/Makefile
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+++ b/drivers/mtd/spi-nor/Makefile
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@@ -2,6 +2,7 @@
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spi-nor-objs := core.o sfdp.o
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spi-nor-objs += atmel.o
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+spi-nor-objs += bohong.o
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spi-nor-objs += catalyst.o
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spi-nor-objs += eon.o
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spi-nor-objs += esmt.o
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--- /dev/null
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+++ b/drivers/mtd/spi-nor/bohong.c
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@@ -0,0 +1,21 @@
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+// SPDX-License-Identifier: GPL-2.0
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+/*
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+ * Copyright (C) 2005, Intec Automation Inc.
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+ * Copyright (C) 2014, Freescale Semiconductor, Inc.
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+ */
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+
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+#include <linux/mtd/spi-nor.h>
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+
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+#include "core.h"
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+
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+static const struct flash_info bohong_parts[] = {
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+ /* BoHong Microelectronics */
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+ { "bh25q128as", INFO(0x684018, 0, 64 * 1024, 256,
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+ SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) },
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+};
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+
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+const struct spi_nor_manufacturer spi_nor_bohong = {
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+ .name = "bohong",
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+ .parts = bohong_parts,
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+ .nparts = ARRAY_SIZE(bohong_parts),
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+};
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--- a/drivers/mtd/spi-nor/core.c
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+++ b/drivers/mtd/spi-nor/core.c
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@@ -2012,6 +2012,7 @@ int spi_nor_sr2_bit7_quad_enable(struct
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static const struct spi_nor_manufacturer *manufacturers[] = {
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&spi_nor_atmel,
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+ &spi_nor_bohong,
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&spi_nor_catalyst,
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&spi_nor_eon,
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&spi_nor_esmt,
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--- a/drivers/mtd/spi-nor/core.h
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+++ b/drivers/mtd/spi-nor/core.h
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@@ -382,6 +382,7 @@ struct spi_nor_manufacturer {
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/* Manufacturer drivers. */
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extern const struct spi_nor_manufacturer spi_nor_atmel;
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+extern const struct spi_nor_manufacturer spi_nor_bohong;
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extern const struct spi_nor_manufacturer spi_nor_catalyst;
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extern const struct spi_nor_manufacturer spi_nor_eon;
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extern const struct spi_nor_manufacturer spi_nor_esmt;
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