linux-kernel - [PATCHv3 0/2] mtd: m25p80: restore the addressing mode when exiting

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Date:   Wed, 6 Dec 2017 10:53:40 +0800
From:   Zhiqiang Hou <Zhiqiang.Hou@....com>
To:     <linux-mtd@...ts.infradead.org>, <linux-kernel@...r.kernel.org>,
        <computersforpeace@...il.com>, <dwmw2@...radead.org>,
        <boris.brezillon@...e-electrons.com>, <marek.vasut@...il.com>,
        <richard@....at>, <cyrille.pitchen@...ev4u.fr>
CC:     Hou Zhiqiang <Zhiqiang.Hou@....com>
Subject: [PATCHv3 0/2] mtd: m25p80: restore the addressing mode when exiting

From: Hou Zhiqiang <Zhiqiang.Hou@....com>

Restore the status to be compatible with legacy devices.
Take Freescale eSPI boot for example, it copies (in 3 Byte
addressing mode) the RCW and bootloader images from SPI flash
without firing a reset signal previously, so the reboot command
will fail without reseting the addressing mode of SPI flash.

Hou Zhiqiang (2):
  mtd: spi-nor: add an API to restore the status of SPI flash chip
  mtd: m25p80: restore the status of SPI flash when exiting

 Documentation/mtd/spi-nor.txt |  3 +++
 drivers/mtd/devices/m25p80.c  |  9 +++++++++
 drivers/mtd/spi-nor/spi-nor.c | 10 ++++++++++
 include/linux/mtd/spi-nor.h   |  6 ++++++
 4 files changed, 28 insertions(+)

-- 
2.14.1