[U-Boot] [PATCH v2 04/10] rockchip: rk3188: add board_debug_uart_init()

[Kever Yang]

Use board_debug_uart_init() for UART iomux init instead of
do it in board_init_f, and move the function to soc file so
that we can find all the soc/board setting in soc file and
use a common board file.

Signed-off-by: Kever Yang <kever.yang at rock-chips.com>
---

 arch/arm/mach-rockchip/rk3188-board-spl.c | 28 +-----------------
 arch/arm/mach-rockchip/rk3188/Makefile    |  1 +
 arch/arm/mach-rockchip/rk3188/rk3188.c    | 36 +++++++++++++++++++++++
 3 files changed, 38 insertions(+), 27 deletions(-)
 create mode 100644 arch/arm/mach-rockchip/rk3188/rk3188.c

diff --git a/arch/arm/mach-rockchip/rk3188-board-spl.c b/arch/arm/mach-rockchip/rk3188-board-spl.c
index 230d69c4c1..77b9b36d35 100644
--- a/arch/arm/mach-rockchip/rk3188-board-spl.c
+++ b/arch/arm/mach-rockchip/rk3188-board-spl.c
@@ -93,38 +93,12 @@ static int setup_arm_clock(void)
 	return ret;
 }
 
-void board_debug_uart_init(void)
-{
-	/* Enable early UART on the RK3188 */
-#define GRF_BASE	0x20008000
-	struct rk3188_grf * const grf = (void *)GRF_BASE;
-	enum {
-		GPIO1B1_SHIFT		= 2,
-		GPIO1B1_MASK		= 3,
-		GPIO1B1_GPIO		= 0,
-		GPIO1B1_UART2_SOUT,
-
-		GPIO1B0_SHIFT		= 0,
-		GPIO1B0_MASK		= 3,
-		GPIO1B0_GPIO		= 0,
-		GPIO1B0_UART2_SIN,
-	};
-
-	/* Enable early UART on the RK3188 */
-	rk_clrsetreg(&grf->gpio1b_iomux,
-		     GPIO1B1_MASK << GPIO1B1_SHIFT |
-		     GPIO1B0_MASK << GPIO1B0_SHIFT,
-		     GPIO1B1_UART2_SOUT << GPIO1B1_SHIFT |
-		     GPIO1B0_UART2_SIN << GPIO1B0_SHIFT);
-}
-
 void board_init_f(ulong dummy)
 {
 	struct udevice *dev;
 	int ret;
 
-#define EARLY_UART
-#ifdef EARLY_UART
+#ifdef CONFIG_DEBUG_UART
 	/*
 	 * Debug UART can be used from here if required:
 	 *
diff --git a/arch/arm/mach-rockchip/rk3188/Makefile b/arch/arm/mach-rockchip/rk3188/Makefile
index 7fa010405b..7dc123a3d2 100644
--- a/arch/arm/mach-rockchip/rk3188/Makefile
+++ b/arch/arm/mach-rockchip/rk3188/Makefile
@@ -6,5 +6,6 @@
 
 ifndef CONFIG_TPL_BUILD
 obj-y += clk_rk3188.o
+obj-y += rk3188.o
 obj-y += syscon_rk3188.o
 endif
diff --git a/arch/arm/mach-rockchip/rk3188/rk3188.c b/arch/arm/mach-rockchip/rk3188/rk3188.c
new file mode 100644
index 0000000000..933484e0df
--- /dev/null
+++ b/arch/arm/mach-rockchip/rk3188/rk3188.c
@@ -0,0 +1,36 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * (C) Copyright 2019 Rockchip Electronics Co., Ltd
+ */
+#include <common.h>
+#include <asm/io.h>
+#include <asm/arch-rockchip/grf_rk3188.h>
+#include <asm/arch-rockchip/hardware.h>
+
+#ifdef CONFIG_DEBUG_UART_BOARD_INIT
+void board_debug_uart_init(void)
+{
+	/* Enable early UART on the RK3188 */
+#define GRF_BASE	0x20008000
+	struct rk3188_grf * const grf = (void *)GRF_BASE;
+	enum {
+		GPIO1B1_SHIFT		= 2,
+		GPIO1B1_MASK		= 3,
+		GPIO1B1_GPIO		= 0,
+		GPIO1B1_UART2_SOUT,
+		GPIO1B1_JTAG_TDO,
+
+		GPIO1B0_SHIFT		= 0,
+		GPIO1B0_MASK		= 3,
+		GPIO1B0_GPIO		= 0,
+		GPIO1B0_UART2_SIN,
+		GPIO1B0_JTAG_TDI,
+	};
+
+	rk_clrsetreg(&grf->gpio1b_iomux,
+		     GPIO1B1_MASK << GPIO1B1_SHIFT |
+		     GPIO1B0_MASK << GPIO1B0_SHIFT,
+		     GPIO1B1_UART2_SOUT << GPIO1B1_SHIFT |
+		     GPIO1B0_UART2_SIN << GPIO1B0_SHIFT);
+}
+#endif
-- 
2.20.1