ns16550: move CONFIG_SYS_NS16550 to Kconfig

[people/ms/u-boot.git] / drivers / serial / Kconfig

diff --git a/drivers/serial/Kconfig b/drivers/serial/Kconfig
index fe407b775c73fba626dfe0e13a241f32a4ce144b..82ad90d9e89325c0ce0ba0aec5701f4383d7054c 100644 (file)
--- a/drivers/serial/Kconfig
+++ b/drivers/serial/Kconfig
@@ -186,6 +186,16 @@ config ALTERA_UART
          Select this to enable an UART for Altera devices. Please find
          details on the "Embedded Peripherals IP User Guide" of Altera.
 
+config SYS_NS16550
+       bool "NS16550 UART or compatible"
+       help
+         Support NS16550 UART or compatible. This can be enabled in the
+         device tree with the correct input clock frequency. If the input
+         clock frequency is not defined in the device tree, the macro
+         CONFIG_SYS_NS16550_CLK defined in a legacy board header file will
+         be used. It can be a constant or a function to get clock, eg,
+         get_serial_clock().
+
 config SANDBOX_SERIAL
        bool "Sandbox UART support"
        depends on SANDBOX