[PATCH] ARM: rockchip: rk3188: enable pull-ups on UART inputs

[Max Schwarz]

Enable integrated pull-ups on the UART RX pins of Rockchip RK3188.

This fixes UART receive on the radxa Rock board, which has an input diode
preventing the RX pin from being raised from the outside.

Signed-off-by: Max Schwarz <max.schwarz at online.de>
---
 arch/arm/boot/dts/rk3188.dtsi | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/arch/arm/boot/dts/rk3188.dtsi b/arch/arm/boot/dts/rk3188.dtsi
index 412f4d0..2e10bd7 100644
--- a/arch/arm/boot/dts/rk3188.dtsi
+++ b/arch/arm/boot/dts/rk3188.dtsi
@@ -149,7 +149,7 @@
 
 			uart0 {
 				uart0_xfer: uart0-xfer {
-					rockchip,pins = <RK_GPIO1 0 RK_FUNC_1 &pcfg_pull_none>,
+					rockchip,pins = <RK_GPIO1 0 RK_FUNC_1 &pcfg_pull_up>,
 							<RK_GPIO1 1 RK_FUNC_1 &pcfg_pull_none>;
 				};
 
@@ -164,7 +164,7 @@
 
 			uart1 {
 				uart1_xfer: uart1-xfer {
-					rockchip,pins = <RK_GPIO1 4 RK_FUNC_1 &pcfg_pull_none>,
+					rockchip,pins = <RK_GPIO1 4 RK_FUNC_1 &pcfg_pull_up>,
 							<RK_GPIO1 5 RK_FUNC_1 &pcfg_pull_none>;
 				};
 
@@ -179,7 +179,7 @@
 
 			uart2 {
 				uart2_xfer: uart2-xfer {
-					rockchip,pins = <RK_GPIO1 8 RK_FUNC_1 &pcfg_pull_none>,
+					rockchip,pins = <RK_GPIO1 8 RK_FUNC_1 &pcfg_pull_up>,
 							<RK_GPIO1 9 RK_FUNC_1 &pcfg_pull_none>;
 				};
 				/* no rts / cts for uart2 */
@@ -187,7 +187,7 @@
 
 			uart3 {
 				uart3_xfer: uart3-xfer {
-					rockchip,pins = <RK_GPIO1 10 RK_FUNC_1 &pcfg_pull_none>,
+					rockchip,pins = <RK_GPIO1 10 RK_FUNC_1 &pcfg_pull_up>,
 							<RK_GPIO1 11 RK_FUNC_1 &pcfg_pull_none>;
 				};
 
-- 
1.8.3.2