[U-Boot] [PATCH 1/2] spl: at91: add support for SPL_AT91_MCK_BYPASS

[Eugen.Hristev at microchip.com]

On 24.05.2019 09:47, Eugen Hristev - M18282 wrote:
> From: Eugen Hristev <eugen.hristev at microchip.com>
> 
> By default the configuration of the PMC is to have an external crystal
> connected that requires driving on both XIN and XOUT pins.
> The bypass configuration means that only XIN will be used, the SoC will not
> do any driving, and the XIN needs to be provided with a proper signal.
> This is the MOSCXTBY bit in the PMC main clock generator register.
> The SPL needs to properly initialize the PMC registers before switching
> to external clock signal and raising the clock to the cruise speed.
> 
> Also created Kconfig for this specific configuration.
> By default this is disabled.
> 
> Signed-off-by: Eugen Hristev <eugen.hristev at microchip.com>
> ---

Applied both patches in series to u-boot-atmel/master