[U-Boot] [PATCH 0/3] Read SFDP parameters and access flash above 16MB

[Simon Goldschmidt]

On 17.10.2018 13:27, Rajat Srivastava wrote:
> Add functionality to read and parse SFDP parameters to auto-detect
> flash size, page size and address width of flash. This enables
> flash access above 16MB using 4-byte addressing mode.
>
> Add driver support to get SFDP information of flash and use it to
> access flash above 16MB.
>
> Enable reading and parsing of SFDP parameters for Spansion's
> s25fs512 flash to auto-detect its size, its page size and the
> addressing mode it supports.

Why do you need driver-specific code to read the sfdp parameters? 
Wouldn't it be much cleaner to solve this from spi_flash.c only?

If so, just adding the 'spi_flash_parse_sfdp()' function on top of 
Stefan's patch should work?

I tried testing this patch, but just like for Stefan, but it just didn't 
work for me and I failed to see some simple steps to adjust my spi 
driver to make it work.

Simon

>
> Rajat Srivastava (3):
>    mtd/spi: Add JEDEC SFDP support in SPI framework
>    fsl_qspi: Access flash above 16MB using SFDP
>    spi_flash_ids: Enable SFDP parsing for s25fs512 flash
>
>   drivers/mtd/spi/sf_internal.h   |   4 +
>   drivers/mtd/spi/spi_flash.c     | 297 +++++++++++++++++++++++++++++++++++++---
>   drivers/mtd/spi/spi_flash_ids.c |   3 +-
>   drivers/spi/fsl_qspi.c          | 103 +++++++++++++-
>   include/spi.h                   |   2 +
>   include/spi_flash.h             | 120 ++++++++++++++++
>   6 files changed, 501 insertions(+), 28 deletions(-)
>