lkml.org 
[lkml]   [2017]   [Apr]   [2]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH v5 3/6] mtd: spi-nor: add spi_nor_init() function
From
Date
Le 23/03/2017 à 00:33, Cyrille Pitchen a écrit :
> This patch extracts some chunks from spi_nor_scan() and moves them into
> a new spi_nor_init() function.
>
> Indeed, spi_nor_init() regroups all the required SPI flash commands to be
> sent to the SPI flash memory before performing any runtime operations
> (Fast Read, Page Program, Sector Erase, ...). Hence spi_nor_init():
> 1) removes the flash protection if applicable for certain vendors.
> 2) sets the Quad Enable bit, if needed, before using Quad SPI protocols.
> 3) makes the memory enter its (stateful) 4-byte address mode, if needed,
> for SPI flash memory > 128Mbits not supporting the 4-byte address
> instruction set.
>
> spi_nor_scan() now ends by calling spi_nor_init() once the probe phase has
> completed. Further patches could also use spi_nor_init() to implement the
> mtd->_resume() handler for the spi-nor framework.
>
> Signed-off-by: Kamal Dasu <kdasu.kdev@gmail.com>
> Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com>

Applied to github/spi-nor

\
 
 \ /
  Last update: 2017-04-02 21:37    [W:0.158 / U:0.112 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site