[PATCH] arm: mvebu: spl: Always fallback to BootROM boot method

[Pali Rohár]

On Thursday 04 August 2022 16:06:30 Tony Dinh wrote:
> Hi Pali,
> 
> Follow up on the topic of slow/fast SPL SPI loading.
> 
> common/spl/spl_spi.c
>         /*
>          * Load U-Boot image from SPI flash into RAM
>          * In DM mode: defaults speed and mode will be
>          * taken from DT when available
>          */
>         flash = spi_flash_probe(sf_bus, sf_cs,
>                                 CONFIG_SF_DEFAULT_SPEED,
>                                 CONFIG_SF_DEFAULT_MODE);
>         if (!flash) {
>                 puts("SPI probe failed.\n");
>                 return -ENODEV;
>         }
> 
> So that spi-max-frequency = <50000000> in the DTS is not used in the probe.

Based on that comment, spi_flash_probe() function should read
spi-max-frequency from device tree when DM mode is enabled. And fallback
to CONFIG_SF_DEFAULT_SPEED value.

Probably there is a bug in DM spi_flash_probe() function
implementation...