[U-Boot] QSPI "sf probe ...", "sf read ..." on Altera SoC FPGA

[Marek Vasut]

On 01/17/2018 02:06 PM, Simon Goldschmidt wrote:
> On 17.01.2018 14:01, RB23 wrote:
>> hey, i downloaded the september and november versions and i applied
>> the patches on both of them, re-compiled the u boot,
>> and still, it gives me the same error when trying the command "sf probe"
>> i'm not sure what to do, is it possible that i missed something? like
>> a define or something in the make menuconfig?
>> i did some debugging and it seems that the crash happens on this line:
>> div = DIV_ROUND_UP(ref_clk_hz, sclk-hz * 2) -1;
>> thanks.
>>
> 
> I don't know exactly which patches you are talking about, but the
> divide-by-zero problem is still present with all patches I applied. To
> fix it, you need to set up your device tree correctly so that the speed
> is initialized.
> 
> If I remember correctly, you need need to have a flash chip below the
> qspi in the device tree. Check Jason's changes to the various socfpga
> dts files.
> 

Er, maybe a patch which checks this condition wouldn't hurt ?

-- 
Best regards,
Marek Vasut