[PATCH] sunxi: Add support for using UART4 as console on A64

[Nazım Gediz Aydındoğmuş]

A64 has UART4 but it was in conflict with R_UART of older SoCs (e.g. A23).

This commit adds necessary definitions and checks to use UART4 port on A64.

Signed-off-by: Nazım Gediz Aydındoğmuş <gediz.aydindogmus at genemek.com>
---

 arch/arm/include/asm/arch-sunxi/gpio.h | 1 +
 arch/arm/mach-sunxi/board.c            | 4 ++++
 arch/arm/mach-sunxi/clock_sun6i.c      | 3 ++-
 include/configs/sunxi-common.h         | 6 ++++++
 4 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/arch/arm/include/asm/arch-sunxi/gpio.h b/arch/arm/include/asm/arch-sunxi/gpio.h
index a646ea6a3c..1407aff25f 100644
--- a/arch/arm/include/asm/arch-sunxi/gpio.h
+++ b/arch/arm/include/asm/arch-sunxi/gpio.h
@@ -176,6 +176,7 @@ enum sunxi_gpio_number {
 #define SUNXI_GPD_LCD0		2
 #define SUNXI_GPD_LVDS0		3
 #define SUNXI_GPD_PWM		2
+#define SUN50I_GPD_UART4	3
 
 #define SUN5I_GPE_SDC2		3
 #define SUN8I_GPE_TWI2		3
diff --git a/arch/arm/mach-sunxi/board.c b/arch/arm/mach-sunxi/board.c
index f40fccd8f8..7d95b7dd29 100644
--- a/arch/arm/mach-sunxi/board.c
+++ b/arch/arm/mach-sunxi/board.c
@@ -140,6 +140,10 @@ static int gpio_init(void)
 	sunxi_gpio_set_cfgpin(SUNXI_GPL(2), SUN8I_GPL_R_UART);
 	sunxi_gpio_set_cfgpin(SUNXI_GPL(3), SUN8I_GPL_R_UART);
 	sunxi_gpio_set_pull(SUNXI_GPL(3), SUNXI_GPIO_PULL_UP);
+#elif CONFIG_CONS_INDEX == 5 && defined(CONFIG_MACH_SUN50I)
+	sunxi_gpio_set_cfgpin(SUNXI_GPD(2), SUN50I_GPD_UART4);
+	sunxi_gpio_set_cfgpin(SUNXI_GPD(3), SUN50I_GPD_UART4);
+	sunxi_gpio_set_pull(SUNXI_GPD(3), SUNXI_GPIO_PULL_UP);
 #else
 #error Unsupported console port number. Please fix pin mux settings in board.c
 #endif
diff --git a/arch/arm/mach-sunxi/clock_sun6i.c b/arch/arm/mach-sunxi/clock_sun6i.c
index 8e84062bd7..4bb2d66b1e 100644
--- a/arch/arm/mach-sunxi/clock_sun6i.c
+++ b/arch/arm/mach-sunxi/clock_sun6i.c
@@ -83,7 +83,8 @@ void clock_init_sec(void)
 
 void clock_init_uart(void)
 {
-#if CONFIG_CONS_INDEX < 5
+#if CONFIG_CONS_INDEX < 5 || \
+      defined(CONFIG_MACH_SUN50I) && CONFIG_CONS_INDEX < 6
 	struct sunxi_ccm_reg *const ccm =
 		(struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
 
diff --git a/include/configs/sunxi-common.h b/include/configs/sunxi-common.h
index 5b0bec0561..f7a97b3dec 100644
--- a/include/configs/sunxi-common.h
+++ b/include/configs/sunxi-common.h
@@ -45,8 +45,12 @@
 # define CONFIG_SYS_NS16550_COM2		SUNXI_UART1_BASE
 # define CONFIG_SYS_NS16550_COM3		SUNXI_UART2_BASE
 # define CONFIG_SYS_NS16550_COM4		SUNXI_UART3_BASE
+#if defined(CONFIG_MACH_SUN50I)
+# define CONFIG_SYS_NS16550_COM5		SUNXI_UART4_BASE
+#else
 # define CONFIG_SYS_NS16550_COM5		SUNXI_R_UART_BASE
 #endif
+#endif
 
 /* CPU */
 #define COUNTER_FREQUENCY		24000000
@@ -248,6 +252,8 @@ extern int soft_i2c_gpio_scl;
 #define OF_STDOUT_PATH		"/soc at 01c00000/serial at 01c28800:115200"
 #elif CONFIG_CONS_INDEX == 5 && defined(CONFIG_MACH_SUN8I)
 #define OF_STDOUT_PATH		"/soc at 01c00000/serial at 01f02800:115200"
+#elif CONFIG_CONS_INDEX == 5 && defined(CONFIG_MACH_SUN50I)
+#define OF_STDOUT_PATH		"/soc at 01c00000/serial at 01c29000:115200"
 #else
 #error Unsupported console port nr. Please fix stdout-path in sunxi-common.h.
 #endif
-- 
2.17.1