Tool/software: Linux
Hi Biser,
Background: we only put uboot binary in our qspi flash, so our spi operation only occurs at system bootsup, and uboot burning.
Qestion:
I am using AM4378 with uboot 201507. Our qspiflash(N25Q256) supplier MICRON suggests us porting the newest driver as my attached file.
This makes me confused, because I check uboot source code, at first, this qspiflash params is already in driver/mtd/spi/sf_params.c, secondly, the core spi call is in driver/spi/ti_qspi.c, it is a common driver, which does not distinguish the different SPI flash. Thirdly, supplier gives us a driver which looks running on MCU architecture.
In my opinion, I am no necessary to porting this provided driver to uboot, and we just follow the default driver of uboot, after all, we only operate qspiflash in uboot phrase. But I am worried about the risk.
So can you give me some professional suggestion? Any reply is precious. Thanks very much!
Software Driver ReadMe File for:
Release history:
-Release Version 1.8 (June 2017)
MT25Q.c
Added Die erase function.
-Release Version 1.7 (June 2016)
MT25Q.c
Fixed FlashWriteEnable() variable num_of_try not initialed BUG.
-Release Version 1.6 (September 2015)
MT25Q.c v1.6
MT25Q.h v1.6
Modify some unreasonable comments of functions.
-Release Version 1.5 (March 2014)
MT25Q.c v1.5
Changed FlashPemanentProtectionBitRead() to use 4bytes address
Changed FlashPemanentProtectionBitErase() to use 4bytes address
- Release Version 1.4 (13 November 2013)
MT25Q.h v1.4
MT25Q.c v1.4
Driver_Init() reads Discovery Parameter Table to determine
device geometry.
Replaced SPI_SR1_WEL (located in Serialize.h) with SPI_FLASH_WEL,
located in MT25Q.h.
Serialize.h
Serialize.c
- Release Version 1.3 (04 September 2013)
MT25Q.h v1.3
MT25Q.c v1.3
Removed "NMX_" prefix from all type definitions.
Serialize.c
Serialize.h
Added to release package.
- Release Version 1.2 (27 August 2013)
MT25Q.h v1.2
MT25Q.c v1.2
Enhanced error checking.
Tested Suspend and Resume.
Removed Die Erase (not supported on device).
- Release Version 1.1 (June 2013)
Added the following functions:
- FlashReadExtAddrReg()
- FlashWriteExtAddrReg()
- FlashEnterDeepPowerDown()
- FlashReleaseDeepPowerDown()
- FlashReadAdvancedSecProt()
- FlashProgramAdvancedSecProt()
- FlashPasswordRead()
- FlashPasswordProgram()
- FlashPasswordUnlock()
- FlashPermanentProtectionBitRead()
- FlashPermanentProtectionBitProgram()
- FlashPermanentProtectionBitErase()
- FlashWriteGlobalFreezeBit()
- FlashReadGlobalFreezeBit()
- FlashOTPProgram()
- FlashOTPRead()
Warning: this functions are provided in beta
N25Q.h v1.1
N25Q.c v1.1
- Release Version 1.0 (February 2013)
Full alpha version
N25Q.h v1.0
N25Q.c v1.0
- Release Version 0.1 (January 2013)
Alpha version with a subset of commands implemented
N25Q.h v0.1
N25Q.c v0.1
Note: Added support for N25Q256A8. The driver supports both standard N25Q and new N25Q256A8X command set.
