ARM: zx: add low level debug support for zx296702

Use the UART0 peripheral for low level debug. Only the UART port 0 is
currently supported.

Signed-off-by: Jun Nie <jun.nie@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

1 files changed, 14 insertions, 0 deletions

diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug
index 8e354a710d0b..1515cb642372 100644
--- a/arch/arm/Kconfig.debug
+++ b/arch/arm/Kconfig.debug
@@ -1166,6 +1166,18 @@ choice
                   For more details about semihosting, please see
                   chapter 8 of DUI0203I_rvct_developer_guide.pdf from ARM Ltd.
 
+        config DEBUG_ZTE_ZX
+                bool "Use ZTE ZX UART"
+                select DEBUG_UART_PL01X
+                depends on ARCH_ZX
+                help
+                  Say Y here if you are enabling ZTE ZX296702 SOC and need
+                  debug uart support.
+
+                  This option is preferred over the platform specific
+                  options; the platform specific options are deprecated
+                  and will be soon removed.
+
         config DEBUG_LL_UART_8250
                 bool "Kernel low-level debugging via 8250 UART"
                 help
@@ -1346,6 +1358,7 @@ config DEBUG_UART_PHYS
         default 0x02531000 if DEBUG_KEYSTONE_UART1
         default 0x03010fe0 if ARCH_RPC
         default 0x07000000 if DEBUG_SUN9I_UART0
+        default 0x09405000 if DEBUG_ZTE_ZX
         default 0x10009000 if DEBUG_REALVIEW_STD_PORT || \
                                 DEBUG_VEXPRESS_UART0_CA9
         default 0x1010c000 if DEBUG_REALVIEW_PB1176_PORT
@@ -1477,6 +1490,7 @@ config DEBUG_UART_VIRT
         default 0xfb009000 if DEBUG_REALVIEW_STD_PORT
         default 0xfb10c000 if DEBUG_REALVIEW_PB1176_PORT
         default 0xfc40ab00 if DEBUG_BRCMSTB_UART
+        default 0xfc705000 if DEBUG_ZTE_ZX
         default 0xfcfe8600 if DEBUG_UART_BCM63XX
         default 0xfd000000 if ARCH_SPEAR3XX || ARCH_SPEAR6XX
         default 0xfd000000 if ARCH_SPEAR13XX