[U-Boot] SPI flash only works after sspi command (was Re: SPI flash on Altera socfpga)
Pavel Machek
pavel at denx.de
Mon Apr 20 13:58:46 CEST 2015
Hi!
> IIRC, then the aliases in the dts are very important for this:
>
> aliases {
> spi0 = "/spi at ff705000"; /* QSPI */
> ...
>
> Did you add those to your dts as well?
I was using socrates dts for the moment, to keep diffs small. Suddenly
it started working.. and stopped working after reset. Now I realized
what is going on:
=> sf probe
Invalid chip select 0:0 (err=-19)
SF: Failed to set up slave
Failed to initialize SPI flash at 0:0
=> sf probe 0 0 0
Invalid chip select 0:0 (err=-19)
SF: Failed to set up slave
Failed to initialize SPI flash at 0:0
=> sspi
QSPI: Error, command is empty.
Error -1 during SPI transaction
=> sf probe 0 0 0
raise: Signal # 8 caught
raise: Signal # 8 caught
raise: Signal # 8 caught
SF: Detected N25Q512 with page size 256 Bytes, erase size 4 KiB, total
64 MiB
SF: Warning - Only lower 16MiB accessible, Full access #define
CONFIG_SPI_FLASH_BAR
=>
(u-boot 2015.04 final)
Is there missing initialization somewhere...?
Best regards,
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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