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SubjectRe: [PATCH] docs: mtd: Update spi nor reference driver
Cc: +MTD/SPI-NOR/SPI maintainers

Hi John,

On 06.08.19 18:35, John Garry wrote:
> On 06/08/2019 17:06, John Garry wrote:
>> The reference driver no longer exists since commit 50f1242c6742 ("mtd:
>> fsl-quadspi: Remove the driver as it was replaced by spi-fsl-qspi.c").
>> Update reference to spi-fsl-qspi.c driver.
>> Signed-off-by: John Garry <>
>> diff --git a/Documentation/driver-api/mtd/spi-nor.rst
>> b/Documentation/driver-api/mtd/spi-nor.rst
>> index f5333e3bf486..1f0437676762 100644
>> --- a/Documentation/driver-api/mtd/spi-nor.rst
>> +++ b/Documentation/driver-api/mtd/spi-nor.rst
> In fact this document has many references to Freescale QuadSPI - could
> someone kindly review this complete document for up-to-date accuracy?

The new driver spi-fsl-qspi.c is not a SPI NOR controller driver
anymore. It is now a SPI controller driver that uses the SPI MEM API, so
referencing it here is obsolete.

Actually it seems like the whole file is obsolete and needs to be
removed or replaced by proper documentation of the SPI MEM API.

Maybe the docs under Documentation/driver-api/mtd should be officially
maintained by the MTD subsystem (and added to MAINTAINERS). And if there
will be some driver API docs for SPI MEM it should probably live in
Documentation/driver-api/spi instead of Documentation/driver-api/mtd, as
spi-mem.c itself is in drivers/spi.


> Thanks,
> John
>> @@ -59,7 +59,7 @@ Part III - How can drivers use the framework?
>>  The main API is spi_nor_scan(). Before you call the hook, a driver
>> should
>>  initialize the necessary fields for spi_nor{}. Please see
>> -drivers/mtd/spi-nor/spi-nor.c for detail. Please also refer to
>> fsl-quadspi.c
>> +drivers/mtd/spi-nor/spi-nor.c for detail. Please also refer to
>> spi-fsl-qspi.c
>>  when you want to write a new driver for a SPI NOR controller.
>>  Another API is spi_nor_restore(), this is used to restore the status
>> of SPI
>>  flash chip such as addressing mode. Call it whenever detach the
>> driver from
> ______________________________________________________
> Linux MTD discussion mailing list
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