rockchip: Add serial support
Add support for the Rockchip serial device using the ns16550 driver.
This uses driver model and device tree for both SPL and U-Boot proper.
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/serial/Kconfig b/drivers/serial/Kconfig
index 4f6a3b8..7ddda9f 100644
--- a/drivers/serial/Kconfig
+++ b/drivers/serial/Kconfig
@@ -109,6 +109,15 @@
value. Use this value to specify the shift to use, where 0=byte
registers, 2=32-bit word registers, etc.
+config ROCKCHIP_SERIAL
+ bool "Rockchip on-chip UART support"
+ depends on ARCH_UNIPHIER && DM_SERIAL
+ help
+ Select this to enable a debug UART for Rockchip devices. This uses
+ the ns16550 driver. You will need to #define CONFIG_SYS_NS16550 in
+ your board config header. The clock input is automatically set to
+ use the oscillator (24MHz).
+
config SANDBOX_SERIAL
bool "Sandbox UART support"
depends on SANDBOX && DM