[u-boot, v1 0/1] mtd: spi-nor-ids: add Micron MT25QL01G flash

[Patrice CHOTARD]

Hi Hongwei

On 12/7/20 11:40 PM, Hongwei Zhang wrote:
>> From:  Patrice CHOTARD <patrice.chotard at foss.st.com>
>>
>> Hi Hongwei
>>
>> On 12/4/20 11:06 PM, Hongwei Zhang wrote:
>>> Add STMICRO MT25QL01G flash, used on AST2600 board.
>> MT25QL01G is not a STMicroelectronics flash but a Micron one ;-)
> Thanks for the correction, Patrice.
>
> I came back to spi-nor-ids.c, there are two places in the code checking
> CONFIG_SPI_FLASH_STMICRO define, at line 167 (a lot of Micron flashes
> included in the block), and at line 239, furthermore, there is no
> SPI_FLASH_MICRON config menu in Kconfig file. I got confused, why 
> SPI_FLASH_MICRON is not in Kconfig?
To sum up, at the beginning, it was STMicroelectronics flashes, since 2010, MICRON acquired this activities.
If you want the full history, you will find information here: https://en.wikipedia.org/wiki/Numonyx
So the CONFIG_SPI_FLASH_STMICRO compilation flag is historical and didn't get renamed to CONFIG_SPI_FLASH_MICRON.

Patrice

>
>> Patrice
>>
>>> Signed-off-by: Hongwei Zhang <hongweiz at ami.com>
>>> ---
>>>  drivers/mtd/spi/spi-nor-ids.c | 1 +
>>>  1 file changed, 1 insertion(+)
>>>
>>> diff --git a/drivers/mtd/spi/spi-nor-ids.c
>>> b/drivers/mtd/spi/spi-nor-ids.c index 09e8196048..6d22b80586 100644
>>> --- a/drivers/mtd/spi/spi-nor-ids.c
>>> +++ b/drivers/mtd/spi/spi-nor-ids.c
>>> @@ -185,6 +185,7 @@ const struct flash_info spi_nor_ids[] = {
>>>      { INFO("n25q512ax3",  0x20ba20, 0, 64 * 1024, 1024, SECT_4K | USE_FSR |
>> SPI_NOR_QUAD_READ) },
>>>      { INFO("n25q00",      0x20ba21, 0, 64 * 1024, 2048, SECT_4K | USE_FSR | SPI_NOR_QUAD_READ
>> | NO_CHIP_ERASE) },
>>>      { INFO("n25q00a",     0x20bb21, 0, 64 * 1024, 2048, SECT_4K | USE_FSR | SPI_NOR_QUAD_READ
>> | NO_CHIP_ERASE) },
>>> +    { INFO("mt25ql01g",   0x21ba20, 0, 64 * 1024, 2048, SECT_4K | USE_FSR |
>> SPI_NOR_QUAD_READ | NO_CHIP_ERASE) },
>>>      { INFO("mt25qu02g",   0x20bb22, 0, 64 * 1024, 4096, SECT_4K | USE_FSR |
>> SPI_NOR_QUAD_READ | NO_CHIP_ERASE) },