Re: [PATCH] ARM: davinci: da850-evm: fix read access to SPI flash

From: Sekhar Nori
Date: Wed Jan 18 2017 - 04:59:49 EST


On Wednesday 18 January 2017 05:55 AM, Kevin Hilman wrote:
> Fabien Parent <fparent@xxxxxxxxxxxx> writes:
>
>> Read access to the SPI flash are broken on da850-evm, i.e. the data
>> read is not what is actually programmed on the flash.
>> According to the datasheet for the M25P64 part present on the da850-evm,
>> if the SPI frequency is higher than 20MHz then the READ command is not
>> usable anymore and only the FAST_READ command can be used to read data.
>>
>> This commit specifies in the DTS that we should use FAST_READ command
>> instead of the READ command.
>>
>> Signed-off-by: Fabien Parent <fparent@xxxxxxxxxxxx>
>
> Tested on da850-evm on top of v4.10-rc3. This gets the DT boot
> functionatliy in line with the legacy (board-file) boot.
>
> Tested-by: Kevin Hilman <khilman@xxxxxxxxxxxx>

Applied with Kevin's Tested-by and also marked for stable. Sending pull
request for v4.10-rc shortly.

Thanks,
Sekhar