[U-Boot] [PATCH 2/2] rockchip: rk3188: fix early uart setup

[Heiko Stuebner <heiko@sntech.de>]

Commit 7a6d7d3e1279 ("rockchip: pinctrl: rk3188: Move the iomux definitions
into pinctrl-driver") moved the iomux settings out of the grf header
to prevent conflicts with the iomux definitions of other rockchip socs.

This also breaks the early uart setup, as the iomux for uart2 are needed.
To fix that just put the tiny amount of needed iomux definitions next to
the early uart code.

Fixes: 7a6d7d3e1279 ("rockchip: pinctrl: rk3188: Move the iomux definitions into pinctrl-driver")
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
---
 arch/arm/mach-rockchip/rk3188-board-spl.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/arch/arm/mach-rockchip/rk3188-board-spl.c b/arch/arm/mach-rockchip/rk3188-board-spl.c
index 4a810ef696..33982f066f 100644
--- a/arch/arm/mach-rockchip/rk3188-board-spl.c
+++ b/arch/arm/mach-rockchip/rk3188-board-spl.c
@@ -103,6 +103,16 @@ void board_init_f(ulong dummy)
 
 	/* Example code showing how to enable the debug UART on RK3188 */
 #ifdef EARLY_UART
+	enum {
+		GPIO1B1_SHIFT		= 2,
+		GPIO1B1_MASK		= 3,
+		GPIO1B1_UART2_SOUT	= 1,
+
+		GPIO1B0_SHIFT		= 0,
+		GPIO1B0_MASK		= 3,
+		GPIO1B0_UART2_SIN	= 1,
+	};
+
 	/* Enable early UART on the RK3188 */
 	rk_clrsetreg(&grf->gpio1b_iomux,
 		     GPIO1B1_MASK << GPIO1B1_SHIFT |
-- 
2.18.0