[PATCH v5 0/3] spi-nor: Add support for Intel SPI serial flash controller

[Cyrille Pitchen]

Hi all,

Le 21/11/2016 à 11:51, Lee Jones a écrit :
> On Sat, 19 Nov 2016, Boris Brezillon wrote:
> 
>> On Sat, 19 Nov 2016 09:35:46 +0200
>> Mika Westerberg <mika.westerberg at linux.intel.com> wrote:
>>
>>> On Fri, Nov 18, 2016 at 07:04:26PM +0000, Lee Jones wrote:
>>>> On Mon, 14 Nov 2016, Mika Westerberg wrote:
>>>>   
>>>>> This is fifth version of the series. You can find the previous versions
>>>>> archived on:
>>>>>
>>>>>   v4: https://lwn.net/Articles/703773/
>>>>>   v3: https://lwn.net/Articles/697231/
>>>>>   v2: http://lists.infradead.org/pipermail/linux-mtd/2016-June/068277.html
>>>>>   v1: https://lkml.org/lkml/2016/6/14/269
>>>>>
>>>>> This patch series adds support for the Intel SPI serial flash controller
>>>>> found on many recent Intel CPUs including Baytrail and Braswell. This
>>>>> driver makes it possible to access the BIOS and other platform data which
>>>>> is stored on the SPI serial flash. It is also possible to upgrade the BIOS
>>>>> using this driver if it has not been protected by special hardware bits.
>>>>>
>>>>> The patch [1/3] includes documentation how to upgrade BIOS on MinnowBoard
>>>>> MAX.
>>>>>
>>>>> Since poking the SPI serial flash can brick the machine, this driver can
>>>>> only be enabled when CONFIG_EXPERT=y and even then it will remain read-only
>>>>> unless instructed othwerwise by module parameter.
>>>>>
>>>>> Changes from v4:
>>>>>   * Use INTEL_SPI_FIFO_SZ instead of hard coded value of 64 bytes
>>>>>   * Don't increment i inside call to FDATA() macro
>>>>>   * Check nor->read_opcode in intel_spi_read() and return
>>>>>     -EINVAL if not supported. We may add SFDP support later on.
>>>>>
>>>>> Changes from v3:
>>>>>   * Added ACKs from Lee Jones.
>>>>>   * Use bus instead of dev->bus in PCI accesses
>>>>>
>>>>> Changes from v2:
>>>>>   * Rebased on top of v4.8-rc2
>>>>>   * Updated intel_spi_read/write() according spi-nor core changes which
>>>>>     drops retlen parameter and returns number of bytes read/written.
>>>>>
>>>>> Changes from v1:
>>>>>   * Older hardware does not support 64k erase command so added erase_64k
>>>>>     flag which is set only for Broxton (BXT).
>>>>>   * Fix protection range offset for Broxton. Now there is ispi->pregs
>>>>>     pointing to the start of the protection registers.
>>>>>   * Change naming of constants from BCR_BYT -> BYT_BCR and so on.
>>>>>   * Drop lpc_ich_finalize_spi_cell() and initialize cell directly in
>>>>>     lpc_ich_init_spi().
>>>>>   * Use info->type in switch in lpc_ich_init_spi().
>>>>>   * Add defines for magic numbers used in lpc_ich_init_spi().
>>>>>   * Use PLATFORM_DEVID_NONE with mfd_add_devices().
>>>>>
>>>>> Mika Westerberg (3):
>>>>>   spi-nor: Add support for Intel SPI serial flash controller
>>>>>   mfd: lpc_ich: Add support for SPI serial flash host controller
>>>>>   mfd: lpc_ich: Add support for Intel Apollo Lake SoC  
>>>>
>>>> What's the plan for this set?  
>>>
>>> I was hoping to get this merged via MTD tree but I haven't got much
>>> comments from the maintainers. No idea if anyone is going to take this :-(
>>
>> Marek, Cyrille, can you take a look?
> 
> I can push through MFD, no problem.
> 
> I just need Acks from all subsystems concerned.
> 
Marek told me he wants some more time to review on his side, so please wait
before push through MFD! :)

Best regards,

Cyrille