Hi Heiko:
On 2016年11月04日 15:36, Heiko Stuebner wrote:
Am Donnerstag, 3. November 2016, 20:42:21 CET schrieb Andy Yan:
RK1108 UARTs are Synopsis DesignWare 8250 compatible.
Only with different register addresses.
Signed-off-by: Andy Yan <[email protected]>
---
arch/arm/Kconfig.debug | 30 ++++++++++++++++++++++++++++++
1 file changed, 30 insertions(+)
diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug
index d83f7c3..408540f 100644
--- a/arch/arm/Kconfig.debug
+++ b/arch/arm/Kconfig.debug
@@ -776,6 +776,30 @@ choice
their output to the standard serial port on the RealView
PB1176 platform.
+ config DEBUG_RK1108_UART0
+ bool "Kernel low-level debugging messages via Rockchip RK1108
UART0"
+ depends on ARCH_ROCKCHIP
+ select DEBUG_UART_8250
+ help
+ Say Y here if you want kernel low-level debugging support
+ on Rockchip RK1108 based platforms.
+
+ config DEBUG_RK1108_UART1
+ bool "Kernel low-level debugging messages via Rockchip RK1108
UART1"
+ depends on ARCH_ROCKCHIP
+ select DEBUG_UART_8250
+ help
+ Say Y here if you want kernel low-level debugging support
+ on Rockchip RK1108 based platforms.
+
+ config DEBUG_RK1108_UART2
+ bool "Kernel low-level debugging messages via Rockchip RK1108
UART2"
+ depends on ARCH_ROCKCHIP
+ select DEBUG_UART_8250
+ help
+ Say Y here if you want kernel low-level debugging support
+ on Rockchip RK1108 based platforms.
+
are you sure, you need all 3 of them?
I.e. most Rockchip SoCs so far had one uart somewhat designated as debug uart.
Most likely due to it not having rts/cts and being used in reference
schematics, but no one ever used another uart than uart2 on previous socs. So
ideally we could check and only add uarts we actually need for now. More can
be added later anyway once boards try to use them.
Heiko
Actually, I have two boards on my hand, one uses uart0 as debug
port and the another uses uart2, so I add all of them here.
I have a question here, I not very clear how to get the
DEBUG_UART_VIRT value here, I now set the value I got from uart driver
and it works , is there some rule or method to calculate this
DEBUG_UART_VIRT value on different platform?
