configured in the device tree, and input clock frequency can
be got from the clk node.
+config BCM283X_MU_SERIAL
+ bool "Support for BCM283x Mini-UART"
+ depends on DM_SERIAL && ARCH_BCM283X
+ default y
+ help
+ Select this to enable Mini-UART support on BCM283X family of SoCs.
+
config BCM6345_SERIAL
bool "Support for BCM6345 UART"
depends on DM_SERIAL && ARCH_BMIPS