rockchip: rk3188: add support for usb-uart functionality
Rockchip socs can route the debug uart pins through the d+ and d- pins
of one specific usbphy per soc. Add a config option and implement the
setting on the rk3188.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
[Fixed up to mark grf as maybe unused:]
Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
diff --git a/arch/arm/mach-rockchip/Kconfig b/arch/arm/mach-rockchip/Kconfig
index 145d96b..0e15f7b 100644
--- a/arch/arm/mach-rockchip/Kconfig
+++ b/arch/arm/mach-rockchip/Kconfig
@@ -156,6 +156,14 @@
The Rockchip RV1108 is a ARM-based SoC with a single-core Cortex-A7
and a DSP.
+config ROCKCHIP_USB_UART
+ bool "Route uart output to usb pins"
+ help
+ Rockchip SoCs have the ability to route the signals of the debug
+ uart through the d+ and d- pins of a specific usb phy to enable
+ some form of closed-case debugging. With this option supported
+ SoCs will enable this routing as a debug measure.
+
config SPL_ROCKCHIP_BACK_TO_BROM
bool "SPL returns to bootrom"
default y if ROCKCHIP_RK3036