• Vineet Gupta's avatar
    ARC: [axs101] support early 8250 uart · 8d0d56ba
    Vineet Gupta authored
    Earlycon calculates UART clock as "BASE_BAUD * 16". In case of ARC
    "BASE_BAUD" is calculated dynamically in runtime, basically it is an
    alias to arc_early_base_baud(), which in turn just does
    "arc_base_baud/16".
    
    8250 UART on AXS/SDP board uses 33.3MHz clock source which is set in
    "arc_base_baud" with this change.
    
    Additional compatibility string "snps,arc-sdp" is introduced as well
    because there're different flavours of AXS boards but they all share the
    same motherboard and so it's possible to re-use the same code for
    motherbord even if CPU daughterboard changes.
    Signed-off-by: default avatarVineet Gupta <vgupta@synopsys.com>
    8d0d56ba
axs101.dts 540 Bytes